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Acme Electric

Acme Electric
N85 W12545 Westbrook Crossing
Menomonee Falls, WI 53051
800.334.5214

Commercial construction • industrial automation

Full Line Product Catalog
full line product Catalog

©2013 Electrical Holdings LLC. All rights reserved.

ACM_CAT_007_0913

ACME ELECTRIC
Leadership in Quality Designed Products
And Quality Customer Satisfaction
For over eighty-eight years, Acme Electric has
been manufacturing power conversion and
power conditioning equipment for use in industrial, commercial and OEM applications. Acme has built its reputation
as a true industry leader by providing superior service, quality and
technical expertise to the transformer market.
Acme Electric is a full line manufacturer of low
voltage (600V and below) dry type distribution
transformers, industrial control transformers and
power quality equipment. With roughly 1300 catalog sku's, our products cover the full spectrum
of applications, from general purpose power distribution in commercial applications,
to ultra-efficient transformers used
in alternative energy, to transformers that address harmful harmonic
conditions generated in today's
electrical loads. All of our products
are designed, manufactured and
verified to exceed the standards established by
UL, CSA, CE, NEMA, ANSI and IEEE.
Acme operates out of two main facilities. Our
headquarters in Menomonee Falls is home to our
engineering and management staff. Our engineers utilize modern computer aided design tools
and an in-house test lab to quickly, efficiently and
effectively turn around new product designs. The
Menomonee Falls facility also houses a power
laboratory which provides our engineering team
with the ability to test the performance of high
efficiency transformers and power quality equipment under user-defined harmonic conditions.
This rather unique capability enables us to provide further assurance to our customers that our
products are fully qualified to meet the unique
challenges of their applications.

Manufacturing takes place in Acme's new
state-of-the-art, ISO 9001 production facility in
Monterrey, Mexico. With 133,000 square feet
of manufacturing space, it contains
the staffing, the equipment and the
processes indicative of world class,
flexible manufacturing operations.
The Monterrey facility also houses
an in house test lab with certifications from UL, CSA, ISO and TUV. Our manufacturing team is credited with defining and executing the assembly methods and processes
that sustain Acme Electric's reputation as the
supplier of the highest quality transformers in
the industry. And, our on-site quality team takes
the lead in ensuring continuous improvement in
everything we do.
Once the manufacturing process
is complete, our products are
shipped to eight regional warehouses in the United States. The
location of each warehouse was
strategically determined to provide rapid delivery and short lead times to every corner of the
contiguous 48 states. And, with nearly 600
stocked part numbers, Acme has what you
need when you need it.
Acme's technical support team has over 100
years of combined experience in the electrical
industry. Only one phone call away, our technical support team is prepared and ready to help
you solve a broad range of challenges. From
finding the right solution for your application, to
helping you install your brand new transformer,
to helping you troubleshoot an electrical phenomenon in your equipment or facility, our technical service team embodies our philosophy that
our commitment to the customer does not end
with the shipment of product.

TA B L E OF CONT E NT S
SECTION 1

Dry-Type Distribution Transformers
Transformer Questions & Answers................................................................................................. 6-10
Selection Steps.............................................................................................................................. 11-12
Construction Features................................................................................................................... 13-15
316 Stainless Steel Transformers..............................................................................................17 & 25
Selection Charts, 1Ø and 3Ø........................................................................................................ 17-29
Auto-Transformers......................................................................................................................20 & 29
Auto Arrangements (Using 2 Single Phase)..................................................................................... 30
Auto Zig-Zag Transformers................................................................................................................ 31
Non-Standard 3Ø Applications.......................................................................................................... 32
Design Figures, Wiring Diagrams & Accessories....................................................................122-134

SECTION 2

Harmonic Mitigating Transformers
Harmonic Mitigating Transformers............................................................................................... 34-35

SECTION 3

Non-Linear Load® Transformers
Non-Linear Description & Features.............................................................................................. 37-39
Non-Linear Selection Charts......................................................................................................... 40-41
Non-Linear Definition of Terms.......................................................................................................... 42
Design Figures, Wiring Diagrams & Accessories....................................................................122-134

SECTION 4

Drive Isolation Transformers & AC Line Reactors
General Description & Features................................................................................................... 43-45
Selection Charts............................................................................................................................ 46-47
Windings, Terminations & Construction............................................................................................ 47
Thermal Switches............................................................................................................................... 47
AC Line Reactors General Descriptions...................................................................................... 48-49
AC Line Reactors Dimensional Drawings......................................................................................... 48
AC Line Reactors Selection Charts................................................................................................... 50

SECTION 5

Industrial Control Transformers
Selection Steps................................................................................................................................... 52
TA Series Open Core & Coil Construction Features......................................................................... 53
TA Series Open Core & Coil Primary & Secondary Fuse Sizing Info.......................................... 54-55
TA Series Open Core & Coil Primary & Secondary Fuse Sizing Info Fuse Kits......................... 54-55
TA Series Open Core & Coil Jumper Link Connections................................................................... 55
TB Series Open Core & Coil General Description & Features........................................................ 56
TB Series Open Core & Coil Primary & Secondary Fuse Sizing Info........................................ 57-58
TA & TB Series Open Core & Coil Transformers Selection Charts............................................. 59-64
TA Series Open Core & Coil Wiring Diagrams & Dimensional Drawings....................................... 65
TB Series Open Core & Coil Wiring Diagrams & Dimensional Drawings....................................... 66
Harsh Environment Control Transformers......................................................................................... 67
AE/CE Series Encapsulated Transformers................................................................................... 68-75
Finger/Guard ® Industrial Control Transformers. . . . . . . . . . . ..................................................... 76-79

SECTION 6

Low Voltage Lighting Transformers & Power Supplies
Selection Guide..................................................................................................................................83
General Purpose Low Voltage Transformers....................................................................................84
Buck-Boost Lighting Transformers....................................................................................................85
Wiring Diagrams.................................................................................................................................86

©2013 Electrical Holdings LLC. All rights reserved.

Information contained in this catalog is subject to change without notice and therefore cannot be guaranteed by Acme.

TAB L E O F C O N T E N T S
Buck-Boost Transformers

SECTION 7

Description & Applications............................................................................................................88-89
Questions & Answers....................................................................................................................89-93
Selection Charts, Single Phase.....................................................................................................94-96
Selection Charts, Three Phase.....................................................................................................97-99
Specifications & Dimensions...........................................................................................................100
Wiring Diagrams........................................................................................................................101-102

Panel-Tran® Zone Power Centers

SECTION 8

304 Stainless Steel Panel-Tran®................................................................................................104-105
General Description & Construction................................................................................................ 104
Features............................................................................................................................................ 104
Selection Charts........................................................................................................................106-107
Circuit Breaker Data..................................................................................................................106-107
Wiring Diagrams............................................................................................................................... 108

Air Conditioning, Refrigeration & Appliance Transformers

SECTION 9

Construction Features...............................................................................................................110-111
Selection Steps................................................................................................................................. 111
Selection Charts............................................................................................................................... 112

Power Conditioning Products

SECTION 10

True-Power ® Constant Voltage Regulators
	
Introduction & Features........................................................................................................114
	Specifications........................................................................................................................115
	
Selection Charts, Portable & Hardwired..............................................................................115
	
Dimensional Drawings..........................................................................................................116

Powerwise C3 Transformer

SECTION 11

CSL-3 Super Efficient Transformers........................................................................................................ 117
General Description and Features....................................................................................................118-119
Selection Charts....................................................................................................................................... 120

General Information
Design Figures.................................................................................................................................122
Wiring Diagrams........................................................................................................................123-132
Transformer Accessories..........................................................................................................133-134
Acme Specifications Guide......................................................................................................135-138
Industry Standards Data..................................................................................................................139
Alphanumerical Catalog Number Listing.................................................................................140-144
Product Warranty & Shielding Information..............................................................Inside Back Cover

GENERAL

SECTION

DRY-TYPE
DISTRIBUTION
TRANSFORMERS
600 Volt Class and Below
Single and Three Phase
Transformer Questions & Answers............ 6-10
Enclosure Definitions.....................................10
Steps in Transformer Selection............... 11-12
Construction Features............................. 13-16
316 Stainless Steel Transformers......... 17 & 25
Selection Charts 1Ø & 3Ø....................... 17-29
Economical Auto Arrangements...................30
Auto Zig-Zag Transformers...........................31
Non-Standard Three Phase Applications.....32

1

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

Transformer Questions & Answers
1. What is a transformer and how does it work?
A transformer is an electrical apparatus designed to convert
alternating current from one voltage to another. It can be
designed to “step up” or “step down” voltages and works
on the magnetic induction principle. A transformer has no
moving parts and is a completely static solid state device,
which insures, under normal operating conditions, a long
and trouble-free life. It consists, in its simplest form, of
two or more coils of insulated wire wound on a laminated
steel core. When voltage is introduced to one coil, called
the primary, it magnetizes the iron core. A voltage is then
induced in the other coil, called the secondary or output coil.
The change of voltage (or voltage ratio) between the primary
and secondary depends on the turns ratio of the two coils.

6. Can transformers be used in parallel? Single phase
transformers can be used in parallel only when their
impedances and voltages are equal. If unequal voltages
are used, a circulating current exists in the closed network
between the two transformers, which will cause excess
heating and result in a shorter life of the transformer. In
addition, impedance values of each transformer must be
within 7.5% of each other. For example: Transformer A has
an impedance of 4%, transformer B which is to be parallel
to A must have an impedance between the limits of 3.7%
and 4.3%. When paralleling three phase transformers, the
same precautions must be observed as listed above, plus
the angular displacement and phasing between the two
transformers must be identical.

2. What are taps and when are they used? Taps are
provided on some transformers on the high voltage winding
to correct for high or low voltage conditions, and still deliver
full rated output voltages at the secondary terminals.
Standard tap arrangements are at two-and-one-half and
five percent of the rated primary voltage for both high and
low voltage conditions. For example, if the transformer has
a 480 volt primary and the available line voltage is running
at 504 volts, the primary should be connected to the 5%
tap above normal in order that the secondary voltage be
maintained at the proper rating. The standard ASA and
NEMA designation for taps are “ANFC” (above normal full
capacity) and “BNFC” (below normal full capacity).

7.	 Can Acme Transformers be reverse connected?
ACME dry-type distribution transformers can be reverse
connected without a loss of kVA rating, but there are
certain limitations. Transformers rated 1 kVA and larger
single phase, 3 kVA and larger three phase can be reverse
connected without any adverse effects or loss in kVA
capacity. The reason for this limitation in kVA size is, the
turns ratio is the same as the voltage ratio. Example: A
transformer with a 480 volt input, 240 volt output— can
have the output connected to a 240 volt source and thereby
become the primary or input to the transformer, then the
original 480 volt primary winding will become the output
or 480 volt secondary. On transformers rated below 1 kVA
single phase, there is a turns ratio compensation on the
low voltage winding. This means the low voltage winding
has a greater voltage than the nameplate voltage indicates
at no load. For example, a small single phase transformer
having a nameplate voltage of 480 volts primary and 240
volts secondary, would actually have a no load voltage
of approximately 250 volts, and a full load voltage of 240
volts. If the 240 volt winding were connected to a 240 volt
source, then the output voltage would consequently be
approximately 460 volts at no load and approximately
442 volts at full load. As the kVA becomes smaller, the
compensation is greater— resulting in lower output voltages.
When one attempts to use these transformers in reverse, the
transformer will not be harmed; however, the output voltage
will be lower than is indicated by the nameplate.

3. What is the difference between “Insulating,”
“Isolating,” and “Shielded Winding” transformers?
Insulating and isolating transformers are identical. These
terms are used to describe the isolation of the primary
and secondary windings, or insulation between the two.
A shielded transformer is designed with a metallic shield
between the primary and secondary windings to attenuate
transient noise. This is especially important in critical
applications such as computers, process controllers and
many other microprocessor controlled devices. All two,
three and four winding transformers are of the insulating or
isolating types. Only autotransformers, whose primary and
secondary are connected to each other electrically, are not
of the insulating or isolating variety.

6

4. Can transformers be operated at voltages other than
nameplate voltages? In some cases, transformers can be
operated at voltages below the nameplate rated voltage. In
NO case should a transformer be operated at a voltage in
excess of its nameplate rating, unless taps are provided for
this purpose. When operating below the rated voltage, the
kVA capacity is reduced correspondingly. For example, if
a 480 volt primary transformer with a 240 volt secondary is
operated at 240 volts, the secondary voltage is reduced to
120 volts. If the transformer was originally rated 10 kVA, the
reduced rating would be 5 kVA, or in direct proportion to the
applied voltage.

8. Can a Single Phase Transformer be used on a
Three Phase source? Yes. Any single phase transformer
can be used on a three phase source by connecting the
primary leads to any two wires of a three phase system,
regardless of whether the source is three phase 3-wire or
three phase 4-wire. The transformer output will be single
phase.

5. Can 60 Hz transformers be operated at 50 Hz?
ACME transformers rated below 1 kVA can be used on 50
Hz service. Transformers 1 kVA and larger, rated at 60 Hz,
should not be used on 50 Hz service, due to the higher
losses and resultant heat rise. Special designs are required
for this service. However, any 50 Hz transformer will operate
on a 60 Hz service.

10.	
	
	
	

9. Can Transformers develop Three Phase power
from a Single Phase source? No. Phase converters or
phase shifting devices such as reactors and capacitors are
required to convert single phase power to three phase.
How do you select transformers?
(1) Determine primary voltage and frequency.
(2) Determine secondary voltage required.
(3) Determine the capacity required in volt-amperes.

This is done by multiplying the load current (amperes) by
the load voltage (volts) for single phase. For example: if the

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

load is 40 amperes, such as a motor, and the secondary
voltage is 240 volts, then 240 x 40 equals 9600 VA. A 10
kVA (10,000volt-amperes) transformer is required. ALWAYS
SELECT THE TRANSFORMER LARGER THAN THE ACTUAL
LOAD. This is done for safety purposes and allows for
expansion, in case more load is added at a later date. For 3
phase kVA, multiply rated volts x load amps x 1.73 (square
root of 3) then divide by 1000.
	
(4) Determine whether taps are required. Taps are 		
		 usually specified on larger transformers.
	
(5) Use the selection charts in Section I.
11.	 What terminations are provided? Primary and
Secondary Terminations are provided on ACME Dry-Type
Transformers
as follows:
	

	
No lugs— lead type connection on
		
0-25 kVA single phase
		
0-15 kVA three phase
		
Bus-bar terminations
		
(drilled to NEMA standards)
		
37.5 -250 kVA single phase
		
25-500 kVA three phase

insulation class 130°C. Compound filled transformers use
insulation class 180°C. Larger ventilated transformers are
designed to use 220°C insulation. All of these insulation
systems will normally have the same number of years
operating life. A well designed transformer, observing these
temperature limits, will have a life expectancy of 20-25
years.
17. Why should Dry-Type Transformers never be overloaded? Overloading of a transformer results in excessive
temperature. This excessive temperature causes
overheating which will result in rapid deterioration of the
insulation and cause complete failure of the transformer coils.
18. Are temperature rise and actual surface
temperature related? No. This can be compared with an
ordinary light bulb. The filament temperature of a light bulb
can exceed 2000 degrees, yet the surface temperature of
the bulb is low enough to permit touching with bare hands.
19. What is meant by “impedance” in transformers?
Impedance is the current limiting characteristic of a
transformer and is expressed in percentage.

Total Winding Temperature °C

12. Can 60 Hz transformers be used at higher frequencies?
ACME transformers can be used at frequencies above 60 Hz
up through 400 Hz with no limitations provided nameplate
voltages are not exceeded. However, 60 Hz transformers will
have less voltage regulation at 400 Hz than 60 Hz.
13. What is meant by regulation in a transformer?
Voltage regulation in transformers is the difference between
the no load voltage and the full load voltage. This is usually
expressed in terms of percentage. For example: A transformer
delivers 100 volts at no load and the voltage drops to 95
volts at full load, the regulation would be 5%. ACME drytype distribution transformers generally have regulation
from 2% to 4%, depending on the size and the application
for which they are used.
14. What is temperature rise in a transformer?
Temperature rise in a transformer is the temperature of
the windings and insulation above the existing ambient or
surrounding temperature.
15. What is “Class” in insulation? Insulation class
was the original method used to distinguish insulating
materials operating at different temperature levels. Letters
were used for different designations. Letter classifications
have been replaced by insulation system temperatures
in degrees Celsius. The system temperature is the
maximum temperature at the hottest spot in the winding
(coil). Graphical representations of six insulation systems
recognized by Underwriters’ Laboratories, Inc. are shown in
Figure A. These systems are used by Acme for a large part
of the product line.
16. Is one insulation system better than another?
Not necessarily. It depends on the application and the
cost benefit to be realized. Higher temperature class
insulation systems cost more and larger transformers are more
expensive to build. Therefore, the more expensive insulation
systems are more likely to be found in the larger kVA units.

Referring to Figure A, small fractional kVA transformers use

220
30

180
25

COIL HOT SPOT
DIFFERENTIAL

105
10

AV. WINDING
RISE

55

AMBIENT

40

130
10

150
115

80

40
40
40
AGENCY: UL/ANSI 1561 MARCH 1987
Figure A

20. Why is impedance important? It is used for determining
the interrupting capacity of a circuit breaker or fuse employed
to protect the primary of a transformer. Example: Determine
a minimum circuit breaker trip rating and interrupting capacity
for a 10 kVA single phase transformer with 4% impedance,
to be operated from a 480 volt 60 Hz source.

Calculate as follows:
Normal Full Load Current =
Nameplate Volt Amps	
	
10,000 VA
=
=
	
Line Volts 		
480 V
		
20.8 Amperes
Maximum Short Circuit Amps =
Full Load Amps 		
20.8 Amps
=
=
	
4% 	
	
4%	
520 Amps
The breaker or fuse would have a minimum interrupting rating
of 520 amps at 480 volts.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

7

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

Example: Determine the interrupting capacity, in amperes, of
a circuit breaker or fuse required for a 75 kVA, three phase
transformer, with a primary of 480 volts delta and secondary
of 208Y/120 volts. The transformer impedance (Z) = 5%. If the
secondary is short circuited (faulted), the following capacities
are required:
Normal Full Load Current =
	 Volt Amps		
√ 3 x Line Volts		
		
90 Amps

75,000 VA
√ 3 x 480 V

Maximum Short Circuit Line Current =
Full Load Amps	
=	
90 Amps
	5%		
5%	
		
1,800 Amps
The breaker or fuse would have a minimum interrupting rating of
1,800 amps at 480 volts.
NOTE: The secondary voltage is not used in the calculation.
The reason is the primary circuit of the transformer is the only
winding being interrupted.
21.	 Can Single Phase Transformers be used for Three Phase
applications? Yes. Three phase transformers are sometimes
not readily available whereas single phase transformers can
generally be found in stock. Three single phase transformers can
be used in delta connected primary and wye or delta connected
secondary. They should never be connected wye primary to wye
secondary, since this will result in unstable secondary voltage.
The equivalent three phase capacity when properly connected
of three single phase transformers is three times the nameplate
rating of each single phase transformer. For example: Three
10 kVA ­single phase transformers will accommodate a 30 kVA
three phase load.
22. Does ACME provide “Zig-Zag” Grounding Transformers?
Yes. Please refer to Page 31 for a special diagram which
can be used to connect standard single phase off-the-shelf
transformers in a three phase zig-zag manner. This system can
be used for either grounding or developing a fourth wire from
a three phase neutral. An example would be to change a 480
V — three phase — three wire system to a 480Y/277 V — three
phase — four wire system.
23. What color are ACME Dry-Type Transformers?
ASA 61 (NEMA) light gray is used on all enclosed transformers
from .050 to 1000 kVA.
24. How do you select a transformer to operate in an ambient
higher than 40° centigrade?
When the ambient exceeds 40°C use the following chart for
de-rating standard transformers.
	 Maximum Ambient	
	
Temperature	
	
	
	

40°C (104°F)	
50°C (122°F)	
60°C (140°F)	

26. A
 re ACME Transformers shown in this catalog U.L.
Listed? All of the transformers, with few exceptions, are
listed by Underwriters’ Laboratories and have met their
rigorous requirements. We are also prepared to have
transformers, which are not presently listed, submitted for
listing to Underwriters’ upon the customer’s request. Please
contact the factory for details.
27. Is CSA certification available for transformers shown in
this catalog? Most ACME transformers shown in this catalog
are certified by Canadian Standards Association. They have
been designed and tested in accordance with the latest
specifications. Please contact the factory if further details
are required.
28. What is BIL and how does it apply to transformers listed
in this catalog?
BIL is an abbreviation for Basic Impulse Level. Impulse tests
are dielectric tests that consist of the application of a high
frequency steep wave front voltage between windings, and
between windings and ground. The Basic Impulse Level of
a transformer is a method of expressing the voltage surge
(lightning, switching surges, etc.) that a transformer will
tolerate without breakdown. All transformers manufactured
in this catalog, 600 volts and below, will withstand the NEMA
standard BIL rating, which is 10 KV. This assures the user
that he will not experience breakdowns when his system is
properly protected with lightning arrestors or similar surge
protection devices.
29. What is polarity, when associated with a transformer?
Polarity is the instantaneous voltage obtained from the primary
winding in relation to the secondary winding. Transformers 600
volts and below are normally connected in additive polarity —
that is, when tested the terminals of the high voltage and low
voltage windings on the left hand side are connect­ed together,
refer to diagram below. This leaves one high voltage and

Maximum Percentage
of Loading
100%
92%
84%

Instead of ordering custom built transformers to operate in
ambients higher than 40°C, it is more economical to use a
standard transformer of a larger kVA rating.
8

25. Can transformers listed in this catalog be reconnected
as autotransformers to increase their kVA rating? Several
standard single phase transformers listed in this catalog can
be connected as autotransformers. The kVA capacity will
be greatly increased when used as an autotransformer,
in comparison to the nameplate kVA as an insulating
transformer. Examples of autotransformer applications are
changing 600 volts to 480 volts in either single phase or three
phase; changing 480 volts to 240 volts single or three phase
or vice versa; or the developing of a fourth wire (neutral) from
a 480 volt three phase three wire system for obtaining 277
volts single phase. This voltage is normally used for operating
fluorescent lamps or similar devices requiring 277 volts. For
further details showing kVA and voltage combinations for
various autotransformer connections refer to Page 30 and 31
in this catalog.

H1

H2
240 VOLT
INPUT

ADDITIVE
POLARITY

VOLT
METER
120 VOLT
OUTPUT
x2

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

x1

360
VOLT
READING

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

one low voltage terminal unconnected. When the transformer
is excited, the resultant voltage appearing across a
voltmeter will be the sum of the high and low voltage
windings. This is useful when connecting single phase
transformers in parallel for three phase operations. Polarity is a
term used only with single phase transformers.
30. What is exciting current? Exciting current, when
used in connection with transformers, is the current or amperes
required for excitation. The exciting current on most lighting
and power transformers varies from approximately 10% on
small sizes of about 1 kVA and smaller to approximately .5%
to 4% on larger sizes of 750 kVA. The exciting current is made
up of two components, one of which is a real component and
is in the form of losses or referred to as no load watts; the other
is in the form of reactive power and is referred to as kVAR.
31. Will a transformer change Three Phase to single phase?
A transformer will not act as a phase changing device when
attempting to change three phase to single phase. There
is no way that a transformer will take three phase in and
deliver single phase out while at the same time presenting
a balanced load to the three phase supply system. There
are, however, circuits available to change three phase to two
phase or vice versa using standard dual wound transformers.
Please contact the factory for two phase applications.
32. Can air cooled transformers be applied to motor loads?
This is an excellent application for air cooled transformers.
Even though the inrush or starting current is five to seven
times normal running current, the resultant lower voltage
caused by this momentary overloading is actually beneficial
in that a cushioning effect on motor starting is the result. The
tables on Pages 11 and 12 illustrate some typical transformer
requirements for use with motor applications.
33. How is an Acme Drive Isolation Transformer (DIT)
different than a General Purpose Tranformer?
DITs, as the name implies, are designed to be used with
motor drives (AC and DC) and to provide isolation from the
service line. They are specifically designed to withstand the
“short circuit like” duty imposed by the firing of the thyristors.
Harmonics generated by drives create added loads on the
transformer. Therefore, it is important that a transformer
of equal or greater kVA to that recommended by the drive
manufacturer be installed for a particular motor application.

voltage is low the torque and the horsepower of the motor
will drop proportionately to the square of the voltage. For
example: If the voltage were to drop to 70% of nominal, then
motor horsepower and torque would drop to 70 % squared
or 49% of the motor nameplate rating.
If the motor is used for starting a high torque load, the motor
may stay at approximately 50% of normal running speed as
illustrated by the graph below:
SPEED (PERCENT OF
SYNCHROUS SPEED)

SECTION

100
80
60
STALL
ZONE

40
20
50

100

150

200

250

TORQUE (PERCENT OF FULL LOAD TORQUE)
SPEED vs TORQUE FOR A TYPICAL THREE PHASE
INDUCTION TYPE SQUIRREL CAGE MOTOR

The underlying problem is low voltage at the motor terminals.
If the ampere rating of the motor and transformer overcurrent
device falls within the motor’s 50% RPM draw requirements,
a problem is likely to develop. The overcurrent device may not
open under intermediate motor ampere loading conditions.
Overheating of the motor and/or transformer would occur,
possibly causing failure of either component.
This condition is more pronounced when one transformer is
used to power one motor and the running amperes of the
motor is in the vicinity of the full load ampere rating of the
transformer. The following precautions should be followed:
(1)	 When one transformer is used to operate one motor, the 		
		 running amperes of the motor should not exceed 65% of 		
		 the transformer’s full load ampere rating.
(2)	If several motors are being operated from one transformer,
avoid having all motors start at the same time. If this is
impractical, then size the transformer so that the total
running current does not exceed 65% of the transformer’s
full load ampere rating.

NOTE: If motor is to be started more than once per hour add
20% additional kVA.

35. W
 hy are Small Distribution Transformers not used for
Industrial Control Applications?
Industrial control equipment demands a momentary overload
capacity of three to eight times normal capacity. This is most
prevalent in solenoid or magnetic contactor applications where
inrush currents can be three to eight times as high as normal
sealed or holding currents but still maintain normal voltage at
this momentary overloaded condition. Distribution transformers
are designed for good regulation up to 100 percent loading,
but their output voltage will drop rapidly on momentary
overloads of this type making them unsuitable for high inrush
applications.

Care should be exercised in sizing a transformer for an
induction type squirrel cage motor as when it is started,
the lock rotor amperage is approximately 5 to 7 times the
running load amperage. This severe starting overload will
result in a drop of the transformer output voltage. When the

Industrial control transformers are designed especially
for maintaining a high degree of regulation even at eight
times normal load. This results in a larger and generally more
expensive transformer. For a complete listing of ACME
industrial control transformers, refer to Section V.

34. How are transformers sized to operate Three Phase
induction type squirrel cage motors? The minimum
transformer kVA rating required to operate a motor is
calculated as follows:

Minimum Transformer kVA =
		 Running Load Amperes x 1.73
		
x Motor Operating Voltage
		
1000

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

9

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

36. Can 4-Winding Single Phase Transformer be autoconnected? Yes. There are occasions where 480 volts single
phase can be stepped down to 240 volts single phase by
autoconnecting a standard 4-winding isolating transformer
as shown in Figure 1. If connected in this manner, the
nameplate kVA is doubled. For example: A 10 kVA load can
be applied to a 5 kVA 4-winding transformer if connected per
Figure 1.
480V
H1

H3

H2

H4

X1

240V
X3
X2

38. What is meant by “Balanced Loading” on Single Phase
Transformer applications? Since most single phase
transformers have a secondary voltage of 120/240, they will
be operated as a three wire system. Care must be taken
in properly distributing the load as the transformer secondary
consists of 2 separate 120 volt windings. Each 120 volt
winding is rated at one-half the nameplate kVA rating. For
example: A 10 kVA transformer, 120/240 volt secondary is to
service an 8 kVA load at 240 volts and two 1 kVA loads at
120 volts each.

X4
B
A

Figure 1

8 KVA

C

37. What about balanced loading on Three Phases?
Each phase of a three phase transformer must be considered
as a single phase transformer when determining loading. For
example: A 45 kVA three phase transformer with a 208Y/120
volt secondary is to service 4 loads at 120 volts single phase
each. These loads are 10 kVA, 5 kVA, 8 kVA,and 4 kVA.	

B
A

Enclosure Definitions
Type 1 Enclosures — are intended for indoor use,
primarily to provide a degree of protection against
contact with the enclosed equipment.
Type 2 Enclosures — are intended for indoor use,
primarily to provide a degree of protection against
limited amounts of falling water and dirt.
Type 3R Enclosures — are intended for outdoor use,
primarily to provide a degree of protection against falling rain, sleet and external ice formation.

10 KVA

10

8 KVA

5 KVA

C

4 KVA

INCORRECT WAY:

If the incorrect method is used, winding A will be loaded
at 6 kVA, and winding B will be loaded at 4 kVA. These
do total 10 kVA but, since each winding is only rated at
5 kVA (1/2 of nameplate rating), we have an overloaded
transformer and a certain failure.

120V

120V

1 KVA
240V

8 KVA

240V

8 KVA

1 KVA

CORRECT WAY:

A

120V

1 KVA

1 KVA

Definitions Pertaining to Enclosures
Ventilated — means constructed to provide for
circulation of external air through the enclosure to
remove excess heat, fumes or vapors.
Non-Ventilated — means constructed to provide no
intentional circulation of external air through the
enclosure.
Indoor Locations — are those areas protected from
exposure to the weather.
Outdoor Locations — are those areas exposed to
the weather.
Hazardous (Classified) Locations — are those
areas, which may contain hazardous (classified)
materials in sufficient quantity to create an explosion.
See Article 500 of The National Electrical Code.

4 KVA

(NEUTRAL)

45 kVA = 15 kVA per phase
3 phase

If incorrect method is used, phase B will have an 18 kVA
load which is 3 kVA above its normal capacity of 15 kVA and
failure will result even though we only have a total load of 27
kVA on a 45 kVA transformer.

5 KVA

CORRECT WAY:

Note: that maximum loading on any phase does not exceed
10 kVA. Each phase has a 15 kVA capacity.
		
		

10 KVA
(NEUTRAL)

B

120V

INCORRECT WAY:

39. What are typical applications for transfomers?
ACME transformers should be specified to:

(1) Distribute power at high voltage.
(2) Eliminate double wiring.
(3) O
 perate 120 volt equipment from power circuits.
(4) Insulate circuits/establish separately derived circuits.
(5) Provide 3-­wire secondary circuits.
(6) Buck and Boost (See Section VII).
(7) P
 rovide electrostatic shielding for transient noise protection.

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SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

Steps for Selecting the Proper Transformer
SINGLE PHASE LOADS

TABLE 1

1.	Determine electrical load
	 A.	Voltage required by load.
	 B.	Amperes or kVA capacity required by load.
	 C.	Frequency in Hz (cycles per second).
	 D.	Verify load is designed to operate on a single phase supply.
All of the above information is standard data normally obtained from equipment
nameplates or instruction manuals.

Full Load Current in Amperes–
Single Phase Circuits

2.	Determine supply voltage
	 A.	Voltage of supply (source).
	 B.	Frequency in Hz (cycles per second).
The frequency of the line supply and electrical load must be the same. Select
single phase transformer designed to operate at this frequency, having a primary
(input) equal to the supply voltage and a secondary (output) equal to the voltage required by the load.

	
.750	6.3	3.6	3.1	2.7	2.0	1.7	1.6	1.3

3.	If the load nameplate expresses a rating in kVA, a transformer can be
	 directly selected from the charts. Choose from a group of transformers with 	
	 primary and secondary voltages matching those you have just determined.
	 A.	Select a transformer with a standard kVA capacity equal to or greater than 	

	 kVA	 120V	 208 V	 240V	 277 V	 380V	 440V	 480V	 600V
	.050	0.4	0.2	0.2	0.2	0.1	0.1	0.1	0.1
.100	0.8	0.5	0.4	0.3	0.2	0.2	0.2	0.2
.150	1.2	0.7	0.6	0.5	0.4	0.3	0.3	0.3
	
.250	2.0	1.2	1.0	0.9	0.6	0.5	0.5	0.4
	
.500	4.2	2.4	2.1	1.8	1.3	1.1	1.0	0.8
	
1	 8.3	4.8	4.2	3.6	2.6	2.3	2.1	1.7
	
1.5	12.5	7.2	6.2	5.4	3.9	3.4	3.1	2.5
	
2	16.7	9.6	8.3	7.2	5.2	4.5	4.2	3.3
	3	

25	 14.4	 12.5	 10.8	 7.9	 6.8	 6.2	 5.0

	5	 41	 24.0	20.8	18.0	13.1	11.3	10.4	 8.3
	
7.5	 62	 36	 31	 27	19.7	17	15.6	12.5
	
10	83	48	41	36	26	22.7	
20.8	
16.7
	
15	125	72	62	54	39	34	31	25
	
25	208	120	104	90	 65	 57	 52	 41
	
37.5	312	180	156	135	 98	 85	 78	 62
	
50	 416	240	208	180	131	114	104	 83

		 that needed to operate the load.
	 B.	Primary taps are available on most models to compensate for line voltage
		 variations. (Refer to question #2 in the Transformer Questions and Answers 	
		 Section on page 6.)
	 C.	When load ratings are given only in amperes, tables 1 and 2 or the following
		 formulas may be used to determine proper kVA size for the required transformer.
		 (1)	To determine kVA when volts and amperes are known:
			
kVA = Volts x Amps
			        
1000
		 (2)	To determine Amperes when kVA and volts are known:
			
kVA x 1000
Amps =
			         
Volts

	
75	 625	360	312	270	197	170	156	125
	
100	833	480	416	361	263	227	208	166
	
167	1391	802	695	602	439	379	347	278
250	2083	1201	
	
1041	902	657	568	520	416

TABLE 2
Full Load Amperes
Single Phase A.C. Motors ①
					 Min.
	Horse-	 115 V	
208 V	
230 V	Trans	power				
former
					 kVA
	 1/6	  4.4	 2.4	 2.2	  .53
	

1 4

Single Phase Example

	

1 3

Question: Select a transformer to meet the following conditions. Load is single
phase lighting using incandescent lamps. Each fixture requires 1.3 amps @ 120
volts, 1 phase, 60 Hz, power factor of unity. The installation requires 52-100 watt
fixtures. The desired circuit distributing power to the light fixtures is 120/240 volt,
three wire, single phase. The supply voltage is 460 volt, 3 phase.

	

1 2

	

3 4

Answer: Compute the kVA required.
1.3 amps x 120 volts
= .156 kVA
	  
1000
For each lighting fixture
Always use amps x volts to compute VA, never use lamp wattage. .156 kVA/
Fixture x 52 Fixture = 8.11 kVA. The two sizes (kVA) nearest 8.11 kVA are 7.5 kVA
and 10 kVA. Use the 10 kVA. This will not overload the transformer and allows some
capacity, 1.89 kVA, for future loads. Since the supply is 460 V (not 480 V) use
the 456 V tap. This will produce approximately 120 volts on output. If the tap is not
used, the output will be 115 V compared to the desired 120 V. Note the transformer selected is single phase but the supply is 480 V, 3 phase. Single phase is
obtained by using any 2 wires of the 3 phase supply.

/ 	  5.8	 3.2	 2.9	  .70
/ 	  7.2	 4.0	 3.6	  .87
/ 	  9.8	 5.4	 4.9	 1.18
/ 	 13.8	 7.6	 6.9	 1.66

	 1	 16	 8.8	 8	 1.92
	 1.5	 20	

11.0	

10	 2.40

	 2	 24	

13.2	

12	 2.88

	 3	 34	

18.7	

17	 4.10

	 5	 56	

30.8	

28	 6.72

	 7.5	 80	

44	

40	 9.6

	10	 100	

55	

50	 12.0

①	When motor service factor is greater than 1, 	

		 increase full load amps proportionally.
		 Example: If service factor is 1.15, increase 	
		 above amp values by 15%.

		 1 Phase kVA = 	 Volts x Amps	
1000
			
	NOTE: If motors are started more than once per 	
	hour, increase minimum transformer kVA by 20%.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

11

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

THREE PHASE LOADS
1.	Determine electrical load
	 A.	Voltage required by load.
	 B.	Amperes or kVA required by load.
	 C.	Frequency in Hz (cycles per second).
	 D.	Verify load is designed to operate on three phase.
All the above information is standard data normally obtained from equipment
nameplates or instruction manuals.
2.	Determine supply voltage
	A.	Voltage of supply (source).
	 B.	Frequency in Hz (cycles per second).
The frequency of the line supply and electrical load must be the same. A three
phase transformer is selected which is designed to operate at this frequency
having a primary (input) equal to the supply voltage and a secondary (output)
equal to the voltage required by the load.
3.	If the load nameplate expresses a rating in kVA, a transformer can be
	 directly selected from the charts. Choose from the group of transformers 	
	 with primary and secondary voltages matching that which you have 		
	 just determined.
	 A.	Select a transformer with a standard kVA capacity equal to or greater than 	
that needed to operate the load.
	 B.	Primary taps are available on most models to compensate for line voltage
		 variations. (Refer to question #2 in the Transformer Questions and Answers 	
		 Section on page 6.)
	 C.	When load ratings are given only in amperes, tables 3 and 4 or the following
		 formulas may be used to determine proper kVA size for the required transformer.
		(1)	 To determine three phase kVA when volts and amperes are known:
Three Phase kVA =
Volts x Amps x 1.73
1000
		(2)	To determine Amperes when kVA and volts are known:
3 Phase kVA x 1000
Amps =
Volts x 1.73

Three Phase Example
Question: Select a transformer to fulfill the following conditions. Load is a three phase
induction motor, 25 horsepower @ 240 volts, 60 Hz and a heater load of 4 kilowatts @
240 volts single phase. The supply voltage is 480Y/277, three phase, 4 wire.
Answer: Compute the kVA required. Motor — From table 4 the current is 68 amps.
240 volts x 68 amps x 1.73 = 28.2 kVA
		
1000
(The kVA can also be obtained from table 4).

Heater — 4 kVA
A three phase transformer must be selected so that any one phase is not overloaded.
Each phase should have the additional 4 kVA rating required by the heater even though
the heater will operate on one phase only. So, the transformer should have a minimum
kVA rating of 28.2 + 4 + 4 + 4 or 40.2 kVA. Refer to the appropriate selection chart.
A 480 delta primary — 240 delta secondary transformer may be used on a 4 wire,
480Y/277 volt supply. The fourth wire (neutral) is not connected to the transformer. To
not overload the transformer, a 45 kVA transformer should be selected.
NOTE: Any two wires of the 240 volts, 3 phase developed by the secondary of the
transformer may be used to supply the heater. Any 2 wires of a 3 phase system is
single phase.
12

TABLE 3
Full Load Current in Amperes–
Three Phase Circuits
	 kVA	 208 V	 240 V	 380 V	 440 V	 480 V	 600 V
4.6  	

3.9	

3.6	

2.9

	  4.5	 12.5	

	  3	

8.3	

10.8	 6.8  	

7.2	

5.9	

5.4	

4.3

	  6	 16.6	

14.4	

7.8	 7.2	

5.8

	  9	

25	

21.6	 13.7 	 11.8	 10.8	

9.1 	

8.6

	 15	

41	

36	

22.8 	 19.6	 18.0	 14.4

	 22.5	 62	

54	

34.2 	

29	

27	 21.6

	 30	 83	

72	

45.6 	

39	

36	

	 45	 124	

108	

68.4 	

59	

54	

43

	 75	 208	

180	

114 	

98	

90	

72

	112.5	 312	

270	

171	

147	

135	

108

	150	 416	

360	

228	

196	

180	

144

	225	 624	

541	

342	

294	

270	

216

	300	 832	

721	

456	

392	

360	

288

	500	 1387	 1202	

760	

655	

601	

481

	750	 2081	 1804	 1139	

984	

902	

721

	1000	 2775	

1312	 1202	

962

2405	

1519	

28

TABLE 4
Full Load Amperes
Three Phase A.C. Motors ①
						
Min.
	Horse-	 208 V	 230 V	 460 V	 575 V	 Trans	power					
former
						kVA
	

/ 	 2.2	 2.0	

1 2

1.0	 0.8	 0.9

	 3/4	 3.1	 2.8	

1.4	 1.1	

	 1	 4.0	 3.6	

1.8	 1.4	 1.5

1.2

	 2	 7.5	

6.8	

3.4	 2.7	 2.7

	 3	

10.7	 9.6	

4.8	 3.9	 3.8

	 5	

16.7	

15.2	

7.6	 6.1	 6.3

	 10	

31	

28	

14	 11	

11.2

	  15	

46	

42	

21	

17	

16.6

	 20	

59	

54	

27	 22	

21.6

	 25	

75	

68	

34	 27	

26.6

	 30	

88	

80	

40	 32	

32.4

	 40	

114	

104	

52	 41	

43.2

	 50	

143	

130	

65	 52	 52

	 60	

170	

154	

77	 62	 64

	 75	

211	

192	

96	

	  100	

273	

248	

124	

99	

103

	  125	

342	

312	

156	

125	

130

	 150	

396	

360	

180	

144	

150

	 200	

528	

480	

240	

192	

200

77	 80

①	 When motor service factor is greater than 1, 	

		 increase full load amps proportionally.
	 Example: If service factor is 1.15, increase
above amp values by 15%.

Volts x Amps x 1.73
3 Phase kVA =
	1000
NOTE: If motors are started more than once per
hour, increase minimum transformer kVA by 20%.

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SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

UL-3R Enclosures
ENCAPSULATED SINGLE PHASE, .05 to .150 kVA
FEATURES
	UL listed, CSA certified and UL-3R enclosure meets or exceeds all listing
criteria including NEMA, ANSI and OSHA standards.

n

	Easy and convenient installation to meet your re­quirements, the transformer 	
can be mounted in any position.

n

	Long Life UL class 130°C insulation system. Transformers can be banked for
three phase service.

n

	Large wiring compartment, no conduit or pull boxes required. Front access
for wiring ease. Wiring compartment remains cool.

n

	Completely enclosed UL-3R enclosure for indoor/outdoor service. Rugged
non-ventilated construction.

n

	Plenty of knockouts for multi-directional entry.

n

	 All copper lead wire terminations.

n

	 Ground studs for use with non-metallic conduit.

n

ENCAPSULATED SINGLE PHASE, .250 to 25 kVA
n

Installation keyhole mounting slots for mounting
bolts prior to installation. Mounting slots are
accessible from the front. Lifting ears are included
on 3 to 25 kVA units.

 iring flexible copper leadwire terminations for
W
easy connections outside the front access wiring
	 compartment. Dual size knockouts in both sides
and the bottom of the wiring compartment for
greater wiring convenience and flexibility.
n

FEATURES
	UL listed, CSA certified and UL-3R enclosures meets or
exceeds all listing criteria including NEMA, ANSI and OSHA
standards.

n

	Shielded for cleaner power.

n

	 Encapsulated and completely enclosed design electrical
grade silica and resin compounds completely enclose the
core and coil to seal out all moisture and air. UL Type 3R
enclosure for indoor or outdoor service. Encapsulation eliminates
corrosion and insulation deterioration. 		

n

	 Quiet operation with sound levels well below NEMA standards.

n

	Long life UL class 155°C insulation system. 115°C rise thru
.750 kVA; 180°C insulation system, 115°C rise, 1 kVA and above.

n

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

13

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

Shielded Power in Many Design Styles
ENCAPSULATED THREE PHASE 3 to 75 kVA
316 STAINLESS STEEL
TRANSFORMERS
FEATURES
	 3R enclosure.

n

	Encapsulated construction.

n

	 Single phase: 0.25 – 25 kVA.
	 Three phase: 3 – 7.5 kVA.

n

	 Core and Coil assembly completely encapsulated in
	 polyester or epoxy seals out all moisture, eliminating
	 corrosion and deterioration of insulation.

n

	 Electrostatic shielding.

n

APPLICATIONS

FEATURES
	 UL listed, CSA certified and UL-3R enclosure meets
or exceeds all listing criteria including NEMA, ANSI and
OSHA standards.

n

	UL Class 180°C insulation system. 115°C rise.

n

	 Extra large front access wiring compartment through 9 kVA;
top access through 75 kVA for easier installation and cooler
case temperatures.

n

	 Harsh industrial locations

n

	 Corrosive chemical exposure

n

	 Waste water treatment facilities

n

	 Coastal or marine applications with high salt mist

n

	 Any application where painted cold roll steel is not adequate

n

	Completely enclosed — suitable for indoor/outdoor
service. Consult selection charts for details. Excellent for
dust or lint laden atmosphere.

n

	 Encapsulated — electrical grade silica and resin
compound completely encloses the core and coil.
Encapsulation seals out all moisture and air, eliminating
corrosion and insulation deterioration.

n

	 High efficiency and excellent regulation.

n

	Sound levels below NEMA standards.

n

	 Keyhole mounting slots permit installation of mounting
bolts prior to hanging transformer and are accessible from
the front. Lifting ears for easy installation.

n

n	
Wiring connections can be made outside of wiring
	 compartment due to the use of flexible leads.
n	 3 -9 kVA provided with dual size knockouts in sides and
	 bottom of wiring compartment.

	Termination — copper lead wire.

n

	Electrostatic shielding provided on all 60 Hz isolation
transformers.

n

NOTE: Units above 15 kVA apply to Groups F and K.

14

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SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

VENTILATED
SINGLE PHASE 37.5 to 250 kVA
THREE PHASE 25 to 1000 kVA
FEATURES
	With weather shield, UL Type 3R enclosure type 2 enclosure
without weather shield. UL listed and CSA certified.

n

n

	 UL Class 220°C insulation system, 150°C rise.

	Extra large wiring compartment for easier installation and
cooler case temperatures.

n

	 NEMA standard bus bar terminals, no special tools
needed to make clearly marked connections. Tap
changing easily accomplished with jumpers.

n

	Aluminum windings for increased insulation life, cooler
operation, lower losses.

n

n	
Noise and vibration isolating pads standard to assure
	 quiet operation.

	Large permanently legible nameplates on front.

n

	Single phase units can be banked for 3 phase ­service.

n

	All units have ground studs for use with non-metallic
conduit.

n

	Suitable for wall or “trapeze” mounting. Wall brackets are
available for units up to 50 kVA single and 75 kVA
	 three phase.
n

	Other models are available with class 220°C insulation
and either 115°C or 80°C rise operating temperature. Refer
to Opti-Miser ® Section.

n

	Termination — single phase 37.5 to 100 kVA, copper bus;
167 to 250 kVA, aluminum bus. Three phase 27 to 225 kVA,
copper bus; Groups D, G & J 30 to 225 kVA and all 275 to
1000 kVA, aluminum bus.

n

n	
Electrostatic shielding provided on all 60 Hz
	 isolation transformers. Not available on Groups D1 and G.

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15

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SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

SELECTION CHARTS	

SINGLE PHASE

	 GROUP I
240 X 480 PRIMARY VOLTS — 120/240 SECONDARY VOLTS — FOUR WINDINGS — 1Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

	 ① .05	

T153004	

6.41 (16.3)	

3.14 (8.0)	

3.05 (7.7)	

4 (1.8)	

W	

0.875 (2.2)	

NA	

1–A

	 ① .10	

T153005	

7.16 (18.2)	

3.89 (9.9)	

3.67 (9.3)	

5 (2.3)	

W	

0.875 (2.2)	

NA	

1–A

	 ① .15	

T153006	

7.16 (18.2)	

3.89 (9.9)	

3.67 (9.3)	

7 (3.2)	

W	

0.875 (2.2)	

NA	

1–A

	 ① .25	

T253007S	

8.68 (22.0)	

4.08 (10.4)	

3.88 (9.9)	

10 (4.5)	

W	

0.50-0.75 (1.3-1.9)	

NA	

2–B

	 ① .50	

T253008S	

9.06 (23.0)	

4.37 (11.1)	

4.20 (10.7)	

15 (6.8)	

W	

0.50-0.75 (1.3-1.9)	

NA	

2–B

	 ① .75	

T253009S	

9.68 (24.6)	

4.75 (12.1)	

4.50 (11.4)	

19 (8.6)	

W	

0.50-0.75 (1.3-1.9)	

NA	

2–B

	

1.00	

T253010S	

10.50 (26.7)	

5.50 (14.0)	

5.13 (13.0)	

24 (10.9)	

W	

0.50-0.75 (1.3-1.9)	

NA	

2–B

	

1.50	

T253011S	

11.62 (29.5)	

5.50 (14.0)	

5.13 (13.0)	

30 (13.6)	

W	

0.50-0.75 (1.3-1.9)	

NA	

2–B

	

2.00	

T253012S	

13.00 (33.0)	

5.50 (14.0)	

5.13 (13.0)	

38 (17.2)	

W	

0.50-0.75 (1.3-1.9)	

NA	

2–B

	

3.00	

T253013S	

11.50 (29.2)	

10.31 (26.2)	

7.13 (18.1)	

55 (24.9)	

W	

0.75-1.25 (1.9-3.2)	

NA	

2–C

	

3.00	

T2530134S	

11.50 (29.2)	

10.31 (26.2)	

7.13 (18.1)	

55 (24.9)	

W	

0.75-1.25 (1.9-3.2)	

NA	

3–C

	

5.00	

T253014S	

14.38 (36.5)	

10.31 (26.2)	

7.13 (18.1)	

75 (34.0)	

W	

0.75-1.25 (1.9-3.2)	

NA	

2–C

	

5.00	

T2530144S	

14.38 (36.5)	

10.31 (26.2)	

7.13 (18.1)	

75 (34.0)	

W	

0.75-1.25 (1.9-3.2)	

NA	

3–C

	

7.50	

T2535153S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

115 (52.2)	

W	

0.75-1.25 (1.9-3.2)	

NA	

4–D

	 10.00	

T2535163S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

125 (56.7)	

W	

0.75-1.25 (1.9-3.2)	

NA	

4–D

	 15.00	

T2535173S	

16.94 (43.0)	

14.12 (35.9)	

11.59 (29.4)	

170 (77.1)	

W	

1.00-1.50 (2.5-3.8)	

NA	

4–D

	 25.00	

T2535183S	

18.44 (46.8)	

16.13 (41.0)	

13.34 (33.9)	

250 (113.0)	

W	

1.00-1.50 (2.5-3.8)	

NA	

4–D

	 37.50	

TP530193S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

280 (127.0)	

F ②	

NA	

WSA1	

5–E

	 50.00	

TP530203S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

350 (158.8)	

F ②	

NA	

WSA1	

5–E

	 75.00	

TP530213S	

35.47 (90.1)	

31.90 (81.0)	

26.88 (68.3)	

430 (195.0)	

F	

NA	

WSA3	

5–E

	 100.00	

TP530223S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

525 (238.0)	

F	

NA	

WSA4	

5–E

	 167.00	

TP530233S	

45.60 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

1050 (476.3)	

F	

NA	

WSA5	

5–E

	 250.00	

TP530243S	

45.60 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

1440 (653.2)	

F	

NA	

WSA5	

5–E

Notes: 0.05 through 25.0 kVA encapsulated (exempt from TP1), 37.5 through 250.0 kVA TP1 compliant

	 GROUP I – 316SS
316 STAINLESS STEEL

240 X 480 PRIMARY VOLTS — 120/240 SECONDARY VOLTS — FOUR WINDINGS — 1Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

	

0.25	

T253007SS	

8.68 (22.0)	

4.08 (10.4)	

3.88 (9.9)	

10 (4.5)	

W	

NA	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

NA	

2-B

	

0.50	

T253008SS	

9.06 (23.0)	

4.37 (11.1)	

4.20 (10.7)	

15 (6.8)	

W	

NA	

NA	

2-B

	

0.75	

T253009SS	

9.68 (24.6)	

4.75 (12.1)	

4.50 (11.4)	

19 (8.6)	

W	

NA	

NA	

2-B

	

1.00	

T253010SS	

10.50 (26.7)	

5.50 (14.0)	

5.13 (13.0)	

24 (10.9)	

W	

NA	

NA	

2-B

	

1.50	

T253011SS	

11.62 (29.5)	

5.50 (14.0)	

5.13 (13.0)	

30 (13.6)	

W	

NA	

NA	

2-B

	

2.00	

T253012SS	

13.00 (33.0)	

5.50 (14.0)	

5.13 (13.0)	

38 (17.2)	

W	

NA	

NA	

2-B

	

3.00	

T253013SS	

11.50 (29.2)	

10.31 (26.2)	

7.13 (18.1)	

55 (24.9)	

W	

NA	

NA	

3-C

	

5.00	

T253014SS	

14.38 (36.5)	

10.31 (26.2)	

7.13 (18.1)	

75 (34.0)	

W	

NA	

NA	

3-C

	

7.50	

T253515SS	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

115 (52.2)	

W	

NA	

NA	

4-D

	 10.00	

T253516SS	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

125 (56.7)	

W	

NA	

NA	

4-D

	 15.00	

T253517SS	

16.94 (43.0)	

14.12 (35.9)	

11.59 (29.4)	

170 (77.1)	

W	

NA	

NA	

4-D

	 25.00	
T253518SS	
18.44 (46.8)	
16.13 (41.0)	
13.34 (33.9)	
Notes: 0.25 through 25.0 kVA encapsulated (exempt from TP1)

250 (113.0)	

W	

NA	

NA	

4-D	

① Suitable for 50/60 Hz.
② Wall mounting brackets are available for these sizes, refer to page 133.
ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

17

SECTION
	 GROUP IA

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

240 X 480 PRIMARY VOLTS — COPPER WINDINGS — 120/240 SECONDARY VOLTS — FOUR WINDINGS — 1Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

7.50	

TC535153S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

100 (45.4)	

W	

0.75-1.25 (1.9-3.2)	

NA	

4–D

	 10.00	

TC535163S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

120 (54.4)	

W	

0.75-1.25 (1.9-3.2)	

NA	

4–D

	 15.00	

TC535173S	

16.94 (43.0)	

14.12 (35.9)	

11.59 (29.4)	

160 (72.6)	

W	

1.00-1.50 (2.5-3.8)	

NA	

4–D

	 25.00	

TC535183S	

18.44 (46.8)	

16.13 (41.0)	

13.34 (33.9)	

250 (113.0)	

W	

1.00-1.50 (2.5-3.8)	

NA	

4–D

	 37.50	

TPC530193S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

295 (133.8)	

F ②	

NA	

WSA1	

5–E

	 50.00	

TPC530203S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

378 (172.0)	

F ②	

NA	

WSA1	

5–E

Notes: 7.5 through 25.0 kVA encapsulated (exempt from TP1), 37.5 through 50.0 kVA TP1 compliant

	GROUP II
NON-VENTILATED TRANSFORMERS — 240 X 480 PRIMARY VOLTS — 120/240 SECONDARY VOLTS — FOUR WINDINGS — 1Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

	 37.50	

TE2530193S	

35.47 (90.1)	

31.90 (81.0)	

26.90 (68.3)	

430 (195.0)	

F ②	NA	NA	 5–H
F ②	NA	NA	 5–H

	 50.00	

TE2530203S	

35.47 (90.1)	

31.90 (81.0)	

26.90 (68.3)	

430 (195.0)	

	 75.00	

TE2A530213S	

35.47 (90.1)	

31.90 (81.0)	

26.90 (68.3)	

525 (238.0)	

F	

NA	

NA	

5–H

	 100.00	 TE1530223S	
42.00 (106.7)	
40.00 (101.6)	
30.00 (76.2)	
Notes: 37.5 through 100.0 kVA non-ventilated (exempt from TP1)

775 (352.0)	

F	

NA	

NA	

5–H

① Suitable for 50/60 Hz.
② Wall mounting brackets are available for these sizes, refer to page 133.

18

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

	 GROUP IV

600 PRIMARY VOLTS — 120/240 SECONDARY VOLTS — THREE WINDINGS — 1Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Page 122

	 ① .05	

T153104	

6.41 (16.3)	

3.14 (8.0)	

3.05 (7.7)	

4 (1.8)	

W	

0.875 (2.2)	

NA	

	 ① .10	

T153105	

7.16 (18.2)	

3.89 (9.9)	

3.67 (9.3)	

5 (2.3)	

W	

0.875 (2.2)	

NA	  8–A

	 ① .15	

T153106	

7.16 (18.2)	

3.89 (9.9)	

3.67 (9.3)	

7 (3.2)	

W	

0.875 (2.2)	

NA	  8–A

	 ① .25	

T253107S	

8.68 (22.0)	

4.08 (10.4)	

3.88 (9.9)	

10 (4.5)	

W	

0.50-0.75 (1.3-1.9)	

NA	  9–B

	 ① .50	

T253108S	

9.06 (23.0)	

4.37 (11.1)	

4.20 (10.7)	

15 (6.8)	

W	

0.50-0.75 (1.3-1.9)	

NA	  9–B

	 ① .75	

T253109S	

9.68 (24.6)	

4.75 (12.1)	

4.50 (11.4)	

19 (8.6)	

W	

0.50-0.75 (1.3-1.9)	

NA	  9–B

	

1.00	

T253110S	

10.50 (26.7)	

5.50 (14.0)	

5.13 (13.0)	

24 (10.9)	

W	

0.50-0.75 (1.3-1.9)	

NA	  9–B

	

1.50	

T253111S	

11.62 (29.5)	

5.50 (14.0)	

5.13 (13.0)	

30 (13.6)	

W	

0.50-0.75 (1.3-1.9)	

NA	  9–B

	

2.00	

T253112S	

13.00 (33.0)	

5.50 (14.0)	

5.13 (13.0)	

38 (17.2)	

W	

0.50-0.75 (1.3-1.9)	

NA	  9–B

	

3.00	

T2531131S	

11.50 (29.2)	

10.31 (26.2)	

7.13 (18.1)	

55 (24.9)	

W	

0.75-1.25 (1.9-3.2)	

NA	

	

5.00	

T2531141S	

14.38 (36.5)	

10.31 (26.2)	

7.13 (18.1)	

75 (34.0)	

W	

0.75-1.25 (1.9-3.2)	

NA	

10–C

	

7.50	

T2536151S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

115 (52.2)	

W	

0.75-1.25 (1.9-3.2)	

NA	

10–D

	 10.00	

T2536161S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

125 (56.7)	

W	

0.75-1.25 (1.9-3.2)	

NA	

10–D

	 15.00	

T2536171S	

16.94 (43.0)	

14.12 (35.9)	

11.59 (29.4)	

170 (77.1)	

W	

1.00-1.50 (2.5-3.8)	

NA	

10–D

	 25.00	

T2536181S	

18.44 (46.8)	

16.13 (41.0)	

13.34 (33.9)	

250 (113.0)	

W	

1.00-1.50 (2.5-3.8)	

NA	

10–D

	 37.50	

TP531193S	

25.50 (64.8)	

24.40 (62.0)	

19.40 (49.3)	

275 (125.0)	

F ②	 NA	WSA1	 11-E

	 50.00	

TP531203S	

29.90 (76.0)	

28.15 (71.5)	

22.37 (56.8)	

340 (154.0)	

F ②	 NA	WSA2	 11–E

	 75.00	

TP531213S	

35.47 (90.0)	

31.90 (81.0)	

26.88 (68.3)	

430 (195.0)	

F	

NA	

WSA3	

8–A

10–C

11-E

	 100.00	

TP531223S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

525 (238.0)	

F	

NA	

WSA4	

11-E

	 167.00	

TP531233S	

45.60 (115.8)	

39.5 (100.3)	

35.5 (90.2)	

1050 (476.3)	

F	

NA	

WSA5	

11-E

Notes: 0.05 kVA through 25.0 kVA encapsulated (exempt from TP1), 37.5 through 167.0 kVA C802 compliant

	 GROUP V
208 PRIMARY VOLTS — 120/240 SECONDARY VOLTS — THREE WINDINGS — 1Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

	 37.5	

TP536491S	

25.48 (64.7)	

24.39 (62.0)	

19.37 (49.2)	

257 (117.0)	

F ②	 N/A	WSA1	 58–E

	 50.0	

TP536503S	

25.48 (64.7)	

24.39 (62.0)	

19.37 (49.2)	

340 (154.2)	

F ②	 N/A	WSA1	 17–E

	 75.0	

TP536513S	

35.40 (89.9)	

31.90 (81.0)	

26.88 (68.2)	

420 (190.5)	

F ②	 N/A	WSA3	 17–E

Notes: 1.0 kVA through 25.0 kVA encapsulated (exempt from TP1), 37.5 through 75 kVA TP1 compliant

① Suitable for 50/60 Hz.
② Wall mounting brackets are available for these sizes, refer to page 133.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

19

SECTION
	 GROUP VII

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

120/208/240/277 PRIMARY VOLTS –– 120/240 SECONDARY VOLTS –– 1Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

	

1.0	

T279740S	

10.50 (26.7)	

5.50 (14.0)	

5.13 (13.0)	

23 (10.4)	

W	

0.50-0.75 (1.3-1.9)	

NA	

23–B

	

1.5	

T279741S	

11.62 (29.5)	

5.50 (14.0)	

5.13 (13.0)	

30 (13.6)	

W	

0.50-0.75 (1.3-1.9)	

NA	

23–B

	

2.0	

T279742S	

13.00 (33.0)	

5.50 (14.0)	

5.13 (13.0)	

37 (16.8)	

W	

0.50-0.75 (1.3-1.9)	

NA	

23–B

	

3.0	

T279743S	

11.50 (29.2)	

10.31 (26.2)	

7.13 (18.1)	

55 (24.9)	

W	

0.75-1.25 (1.9-3.2)	

NA	

23–C

	

5.0	

T279744S	

14.38 (36.5)	

10.31 (26.2)	

7.13 (18.1)	

75 (34.0)	

W	

0.75-1.25 (1.9-3.2)	

NA	

23–C

	

7.5	

T279745S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

105 (47.6)	

W	

0.75-1.25 (1.9-3.2)	

NA	

63–D

	 10.0	

T279746S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

124 (56.2)	

W	

0.75-1.25 (1.9-3.2)	

NA	

63–D

	 15.0	

T279747S	

16.94 (43.0)	

14.12 (35.9)	

11.59 (29.4)	

171 (77.6)	

W	

1.00-1.50 (2.5-3.8)	

NA	

63–D

	 25.0	

T279748S	

18.44 (46.8)	

16.13 (41.0)	

13.34 (33.9)	

261 (118.4)	

W	

1.00-1.50 (2.5-3.8)	

NA	

63–D

	 GROUP VIII
AUTO-TRANSFORMERS

240 PRIMARY VOLTS — 120/240 SECONDARY VOLTS — 1Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

20

	

1.0	

T253060	

9.06 (23.0)	

4.37 (11.1)	

4.20 (10.7)	

	

1.5	

	

2.0	

T253061	

9.68 (24.6)	

4.50 (11.4)	

T253062	

10.50 (26.7)	

5.50 (14.0)	

	
	

3.0	

T253063	

11.62 (29.5)	

5.0	

T253064	

13.00 (33.0)	

	

7.5	

T253065	

11.50 (29.2)	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

15 (6.8)	

W	

0.50-0.75 (1.3-1.9)	

NA	

12–B

4.51 (11.5)	

19 (8.6)	

W	

0.50-0.75 (1.3-1.9)	

NA	

12–B

5.13 (13.0)	

24 (10.9)	

W	

0.50-0.75 (1.3-1.9)	

NA	

12–B

5.50 (14.0)	

5.13 (13.0)	

30 (13.6)	

W	

0.50-0.75 (1.3-1.9)	

NA	

12–B

5.50 (14.0)	

5.13 (13.0)	

38 (17.2)	

W	

0.50-0.75 (1.3-1.9)	

NA	

12–B

10.31 (26.2)	

7.13 (18.1)	

55 (24.9)	

W	

0.75-1.25 (1.9-3.2)	

NA	

12–C	

	 10.0	

T253066	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

115 (52.2)	

W	

0.75-1.25 (1.9-3.2)	

NA	

12–D

	 15.0	

T253067	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

115 (52.2)	

W	

0.75-1.25 (1.9-3.2)	

NA	

12–D

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

	 GROUP IX

EXPORT MODEL

190/200/208/220 X 380/400/416/440 PRIMARY VOLTS
120/240 SECONDARY VOLTS — 1Ø, 50/60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

	 * 1.0	

TF217437S	

10.50 (26.7)	

5.50 (14.0)	

5.13 (13.0)	

24 (10.9)	

W	

0.50-0.75 (1.3-1.9)	

NA	

14–B

	* 2.0	

TF217439S	

13.00 (33.0)	

5.50 (14.0)	

5.13 (13.0)	

38 (17.2)	

W	

0.50-0.75 (1.3-1.9)	

NA	

14–B

	* 3.0	

TF249873S	

11.50 (29.2)	

10.31 (26.2)	

7.13 (18.1)	

55 (24.9)	

W	

0.75-1.25 (1.9-3.2)	

NA	

14–C

	* 5.0	

TF252520S	

14.38 (36.5)	

10.31 (26.2)	

7.13 (18.1)	

75 (34.0)	

W	

0.75-1.25 (1.9-3.2)	

NA	

14–C

	* 7.5	

TF252794S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

115 (52.2)	

W	

0.75-1.25 (1.9-3.2)	

NA	

14–D

	* 10.0	

TF252795S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

125 (56.7)	

W	

0.75-1.25 (1.9-3.2)	

NA	

14–D

	* 15.0	

TF252796S	

16.94 (43.0)	

14.12 (35.9)	

11.59 (29.4)	

170 (77.1)	

W	

1.00-1.50 (2.5-3.8)	

NA	

14–D

	* 25.0	

TF252797S	

18.44 (46.8)	

16.13 (41.0)	

13.34 (33.9)	

300 (136.0)	

W	

1.00-1.50 (2.5-3.8)	

NA	

14–D

*	CE Marked
	 GROUP X
EXPORT MODEL­②

190/208/220/240 x 380/416/440/480 PRIMARY VOLTS –– 120/240 SECONDARY VOLTS –– 1Ø, 50/60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

	 *1.0	

TF279260S	

10.50 (26.7)	

5.50 (14.0)	

5.13 (13.0)	

24 (10.9)	

W	

0.50-0.75 (1.3-1.9)	

NA	

64–B

	 *2.0	

TF279261S	

13.00 (33.0)	

5.50 (14.0)	

5.13 (13.0)	

38 (17.2)	

W	

0.50-0.75 (1.3-1.9)	

NA	

64–B

	 *3.0	

TF279262S	

11.50 (29.2)	

10.31 (26.2)	

7.13 (18.1)	

55 (24.9)	

W	

0.75-1.25 (1.9-3.2)	

NA	

64–C	

	 *5.0	

TF279263S	

14.38 (36.5)	

10.31 (26.2)	

7.13 (18.1)	

75 (34.0)	

W	

0.75-1.25 (1.9-3.2)	

NA	

64–C

	 *7.5	

TF279264S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

115 (52.2)	

W	

0.75-1.25 (1.9-3.2)	

NA	

64–D

	 *10.0	

TF279265S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

125 (56.7)	

W	

0.75-1.25 (1.9-3.2)	

NA	

64–D

	 *15.0	

TF279266S	

16.94 (43.0)	

14.12 (35.9)	

11.59 (29.4)	

170 (77.1)	

W	

1.00-1.50 (2.5-3.8)	

NA	

64–D

	 *25.0	

TF279267S	

18.44 (46.8)	

16.13 (41.0)	

13.34 (33.9)	

300 (136.1)	

W	

1.00-1.50 (2.5-3.8)	

NA	

64–D

*	CE Marked
	 GROUP XI
EXPORT MODEL­②

190/200/208/220 x 380/400/416/440 PRIMARY VOLTS –– 110/220 SECONDARY VOLTS –– 1Ø, 50/60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

	 *1.0	

TF279300S	

10.50 (26.7)	

5.50 (14.0)	

5.13 (13.0)	

24 (10.9)	

W	

0.50-0.75 (1.3-1.9)	

NA	

65–B

	 *2.0	

TF279301S	

13.00 (33.0)	

5.50 (14.0)	

5.13 (13.0)	

38 (17.2)	

W	

0.50-0.75 (1.3-1.9)	

NA	

65–B

	 *3.0	

TF279302S	

11.50 (29.2)	

10.31 (26.2)	

7.13 (18.1)	

55 (24.9)	

W	

0.75-1.25 (1.9-3.2)	

NA	

65–C

	 *5.0	

TF279303S	

14.38 (36.5)	

10.31 (26.2)	

7.13 (18.1)	

75 (34.0)	

W	

0.75-1.25 (1.9-3.2)	

NA	

65–C

	 *7.5	

TF279304S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

115 (52.2)	

W	

0.75-1.25 (1.9-3.2)	

NA	

65–D

*	CE Marked

① Wall mounting brackets are available for these sizes, refer to page 133.
② Maximum exciting current 5% at 50 Hz.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

21

SECTION
	 GROUP XII

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

277/480 PRIMARY VOLTS –– 208/277 SECONDARY VOLTS –– 1Ø, 60 Hz
						APPROX. DIMENSIONS		APPROX.	
TYPE MTG.			
	 kVA	
CATALOG NO.			Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
				
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	
	 0.25	

GP12250S	

8.68 (22.0)	

4.08 (10.4)	

3.88 (9.9)	

12 (5.4)	

W	

0.50-0.75 (1.3-1.9)	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

NA	

78-B

	 0.50	

GP12500S	

9.06 (23.0)	

4.37 (11.1)	

4.20 (10.7)	

19 (8.6)	

W	

0.50-0.75 (1.3-1.9)	

NA	

78-B

	 1.00	

GP121000S	

10.50 (26.7)	

5.50 (14.0)	

5.13 (13.0)	

30 (13.6)	

W	

0.50-0.75 (1.3-1.9)	

NA	

78-B

	 3.00	

GP123000S	

11.50 (29.2)	

10.31 (26.2)	

7.13 (18.1)	

58 (26.3)	

W	

0.75 -1.25 (1.9-3.2)	

NA	

78-C	

	 5.00	

GP125000S	

14.38 (36.5)	

10.31 (26.2)	

7.13 (18.1)	

80 (36.3)	

W	

0.75 -1.25 (1.9-3.2)	

NA	

78-C

	 10.00	

GP1210000S	

15.19 (38.6)	

13.50 (34.3)	

10.84 (27.5)	

125 (56.7)	

W	

0.75 -1.25 (1.9-3.2)	

NA	

78-D

	 15.00	

GP1215000S	

16.94 (43.0)	

14.12 (35.9)	

11.59 (29.4)	

161 (70.0)	

W	

1.00-1.50 (2.5-3.8)	

NA	

79-D

SELECTION CHARTS	

THREE PHASE

	 GROUP A
208 DELTA PRIMARY VOLTS –– 480Y/277 SECONDARY VOLTS –– 3Ø, 60 Hz
					APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
				
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

	 15.0	

T3793671S	

18.86 (48.0)	

20.30 (51.6)	

9.03 (22.9)	

245 (111.0)	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

F ①	NA	NA	

48–I

	 30.0	

TP793684S	

25.50 (64.8)	

24.40 (62.0)	

19.40 (49.3)	

330 (150.0)	

F ①	 NA	WSA1	

46–E

	 45.0	

TP793694S	

25.50 (64.8)	

24.40 (62.0)	

19.40 (49.3)	

400 (181.0)	

F ①	 NA	WSA1	

46–E

F ①	 NA	WSA2	

	 75.0	

TP793704S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

530 (240.0)	

	 112.5	

TP793714S	

35.47 (90.1)	

31.90 (81.0)	

26.90 (68.3)	

750 (340.0)	

F	

NA	

WSA3	

46–E

46–E

	 150.0	

TP793724S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

950 (430.9)	

F	

NA	

WSA4	

46–E

	 225.0	

TP793734S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

1200 (544.0)	

F	

NA	

WSA4	

46–E

	 300.0	

TP793744S	

45.60 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

1550 (703.0)	

F	

NA	

WSA5	

46–E

Notes: 15 kVA unit encapsulated (exempt from TP1), 30 through 300 kVA TP1 compliant

	 GROUP B
240 DELTA PRIMARY VOLTS –– 208Y/120 SECONDARY VOLTS –– 3Ø, 60 Hz
					APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
				
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

	

9.0	

T2A533601S	

14.03 (36.0)	

17.77 (45.1)	

11.52 (29.3)	

180 (81.6)	

W	

0.75-1.25 (1.9-3.2)	

NA	

	 15.0	

T3533611S	

18.86 (48.0)	

20.30 (51.6)	

9.03 (23.0)	

250 (113.0)	

F①	

NA	

NA	

	 30.0	

TP533624S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

325 (147.0)	

F ①	 NA	WSA1	

19–E

	 45.0	

19–E

TP533634S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

350 (158.8)	

F ①	 NA	WSA1	

	75.0	 TP533644S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

450 (204.1)	

F ①	 NA	WSA2	

	 112.5	

35.47 (90.1)	

31.90 (81.0)	

26.88 (68.3)	

696 (294.8)	

TP533654S	

F	

NA	

WSA3	

18–F
18–I

19–E
19–E	

	 150.0	

TP533664S	

41.52 (105.5)	

32.90 (84.0)	

29.87 (75.9)	

978 (412.8)	

F	

NA	

WSA4	

19–E

	 225.0	

TP533674S	

41.52 (105.5)	

32.90 (84.0)	

29.87 (75.9)	

1200 (544.0)	

F	

NA	

WSA4	

19–E

Notes: 9.0 through 15.0 kVA units encapsulated (exempt from TP1), 30 kVA through 225 kVA TP1 compliant

① Wall mounting brackets are available for these sizes, refer to page 133.
② Consult factory for wiring diagram.

22

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

	 GROUP D

480 DELTA PRIMARY VOLTS –– 208Y/120 SECONDARY VOLTS –– MAY BE USED ON A 4 WIRE 480Y/277 VOLT SUPPLY –– 3Ø, 60 Hz
						APPROX. DIMENSIONS			APPROX.	
TYPE MTG.			
	 kVA	 CATALOG NO.			Inches (Cm.)			
SHIP WEIGHT	W – Wall	
Knockouts	
				
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

	

3.0	

T2A	533081S	

10.38 (26.4)	

12.37 (31.4)	

7.47 (19.0)	

75 (34.0)	

W	

0.75-1.25 (1.9-3.2)	

NA	

21–F

	

6.0	

T2A533091S	

11.83 (30.0)	

14.17 (36.0)	

8.82 (22.4)	

140 (63.5)	

W	

0.75-1.25 (1.9-3.2)	

NA	

21–F

	

9.0	

T2A533101S	

14.03 (36.0)	

17.77 (45.1)	

11.52 (29.3)	

180 (81.6)	

W	

0.75-1.25 (1.9-3.2)	

NA	

21–F

	

15.0	

T3533111S	

18.86 (48.0)	

20.30 (51.6)	

9.03 (22.9)	

250 (113.0)	

F ①	 NA	NA	

21–I

	

30.0	

TP533123S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

290 (132.0)	

F ①	

22–E

NA	

WSA1	

	

45.0	

TP533133S	

25.50 (64.7)	

24.39 (61.9)	

19.37 (49.2)	

400 (181.0)	

F ①	

NA	

WSA1	

22–E

	

75.0	

TP533143S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

500 (226.8)	

F ①	

NA	

WSA2	

22–E

	 112.5	 TP533153S	

35.47 (90.1)	

31.90 (81.0)	

26.88 (68.3)	

750 (340.0)	

F	

NA	

WSA3	

22–E

	 150.0	 TP533163S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

970 (440.0)	

F	

NA	

WSA4	

22–E

	 225.0	 TP1533173S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

1200 (544.0)	

F	

NA	

WSA4	

22–E

	 300.0	 TP533183S	

45.60 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

1550 (703.0)	

F	

NA	

WSA5	

22–E

	 500.0	 TP1533193S	

57.80 (146.8)	

45.60 (115.8)	

41.50 (105.4)	

2480 (1125.0)	

F	

NA	

WSA7	

22–G

	 750.0	 TP1533213S	

62.80 (159.5)	

54.00 (137.2)	

41.50 (105.4)	

3600 (1633.0)	

F	

NA	

WSA6	

22–G

	1000.0	 TP1533222S	

62.80 (159.5)	

54.00 (137.2)	

41.50 (105.4)	

4300 (1950.0)	

F	

NA	

WSA6	

80–G

Notes: 3.0 through 15.0 kVA units encapsulated (exempt from TP1), 30.0 through1000.0 kVA TP1 compliant

	 GROUP D2
480 DELTA PRIMARY VOLTS –– COPPER WINDINGS –– 208Y/120 SECONDARY VOLTS, 150°C RISE –– 3Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

	15.0	

TC533111S*	

18.90 (48.0)	

20.30 (51.6)	

9.00 (22.9)	

245 (111.1)	

F ①	NA	NA	

21–I

	 30.0	

TPC533123S	

25.50 (64.8)	

24.40 (62.0)	

19.40 (49.3)	

346 (157.0)	

F ①	 NA	WSA1	 22–E

	 45.0	

TPC533133S	

25.50 (64.8)	

24.40 (62.0)	

19.40 (49.3)	

397 (180.1)	

F ①	 NA	WSA1	 22–E

	 75.0	

TPC533143S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

521 (236.3)	

F ①	 NA	WSA2	 22–E

	 112.5	

TPC533153S	

35.47 (90.1)	

31.90 (81.0)	

26.88 (68.3)	

766 (347.5)	

F	

NA	

WSA3	

22–E

	 150.0	

TPC533163S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

1026 (465.4)	

F	

NA	

WSA4	

22–E

	 225.0	

TPC533173S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

1300 (589.7)	

F	

NA	

WSA4	

22–E

	 300.0	

TPC533183S	

45.60 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

1551 (703.5)	

F	

NA	

WSA5	

22–E

	 500.0	

TPC533193S	

57.80 (146.8)	

45.00 (114.3)	

41.50 (105.4)	

2819 (1278.7)	

F	

NA	

WSA7	

22–E

* NOTE: TC-53311-1S––Encapsulated, 115° C Rise, 180°C Insulation (TP1 exempt), 30.0 through 500 kVA TP1 compliant

① Wall mounting brackets are available for these sizes, refer to page 133.
② Consult factory for wiring diagram.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

23

SECTION
	 GROUP D4
115°C RISE

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

480 DELTA PRIMARY VOLTS — 208Y/120 SECONDARY VOLTS — MAY BE USED ON A 4 WIRE 480Y/277 VOLT SUPPLY — 3Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	

	 30.0	

TP533121S	

29.48 (74.9)	

28.15 (71.5)	

22.37 (56.8)	

360 (163.3)	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

F ①	 NA	WSA2	

22-E	

	 45.0	

TP533131S	

29.48 (74.9)	

28.15 (71.5)	

22.37 (56.8)	

417 (189.2)	

F ①	 NA	WSA2	

22-E	

	 75.0	

TP533141S	

35.47 (90.1)	

31.90 (81.0)	

26.88 (68.3)	

536 (243.1)	

F ①	 NA	WSA3	

22-E

	 112.5	

TP533151S	

41.50 (105.4)	

32.90 (83.6)	

29.90 (75.9)	

760 (344.7)	

F	

NA	

WSA4	

22-E	

	 150.0	

TP533161S	

41.50 (105.4)	

32.90 (83.6)	

29.90 (75.9)	

950 (430.9)	

F	

NA	

WSA4	

22-E

	 225.0	

TP533171S	

45.59 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

1567 (712.3)	

F	

NA	

WSA5	

22-E

	 300.0	

TP533181S	

45.59 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

1553 (705.9)	

F	

NA	

WSA5	

22-E	

	 500.0	

TP533191S	

57.84 (146.9)	

45.50 (115.6)	

41.50 (105.4)	

2808 (1276.4)	

F	

NA	

WSA7	

22-G

	 GROUP D5
80°C RISE

480 DELTA PRIMARY VOLTS — 208Y/120 SECONDARY VOLTS — MAY BE USED ON A 4 WIRE 480Y/277 VOLT SUPPLY — 3Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	

	 30.0	

TP533128S	

25.49 (64.7)	

24.39 (61.9)	

19.37 (49.2)	

364 (165.1)	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

F ①	 NA	WSA1	 22–E

	 45.0	

TP533138S	

29.48 (74.9)	

28.15 (71.5)	

22.37 (56.8)	

500 (226.8)	

F	

NA	

WSA2	

22–E

	 75.0	

TP533148S	

35.90 (91.2)	

31.90 (81.0)	

26.88 (68.3)	

698 (316.6)	

F	

NA	

WSA3	

22–E

	 112.5	

TP533158S	

41.50 (105.4)	

32.90 (83.6)	

29.90 (75.9)	

963 (437.7)	

F	

NA	

WSA4	

22–E

	 150.0	

TP533168S	

41.50 (105.4)	

32.90 (83.6)	

29.90 (75.9)	

1145 (520.4)	

F	

NA	

WSA4	

22–E

For Copper Wound Transformers Consult Factory

For Additional Low Temperature Rise 115° and 80°C Units Consult Factory
	 GROUP F
ENCAPSULATED TRANSFORMERS, 115°C RISE

480 DELTA PRIMARY VOLTS — 208Y/120 SECONDARY VOLTS — 3Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	

	 30.0	

T3793123S	

24.81 (63.0)	

27.13 (68.9)	

11.14 (28.3)	

613 (278.1)	

F	

NA	

NA	

22–I

	 45.0	

T3793133S	

25.31 (64.3)	

30.18 (76.7)	

12.76 (32.4)	

780 (354.0)	

F	

NA	

NA	

22–I

	 75.0	

T3793143S	

26.82 (68.1)	

34.68 (88.1)	

15.25 (38.7)	

1126 (511.0)	

F	

NA	

NA	

22–I

Notes: 30.0 through 75.0 kVA encapsulated (TP1 exempt)

① Wall mounting brackets are available for these sizes, refer to page 133.
24

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

	 GROUP F – 316 SS
316 STAINLESS STEEL
ENCAPSULATED TRANSFORMERS, 115° C RISE

480 DELTA PRIMARY VOLTS — 208Y/120 SECONDARY VOLTS — 3Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

	 3.0	

T2A53308SS	

10.38 (26.4)	

12.37 (31.4)	

7.47 (19.0)	

75 (34.0)	

W	

NA	

NA	

21-F

	 6.0	

T2A53309SS	

11.83 (30.0)	

14.17 (36.0)	

8.82 (22.4)	

140 (63.5)	

W	

NA	

NA	

21-F

	 9.0	

T2A53310SS	

14.03 (35.6)	

17.77 (45.1)	

11.52 (29.3)	

180 (81.6)	

W	

NA	

NA	

21-F

	15.0	

T353311SS	

18.86 (47.9)	

20.30 (51.6)	

9.03 (22.9)	

250 (113.0)	

F	

NA	

NA	

21-I

	30.0	

T379312SS	

24.81 (63.0)	

27.13 (68.9)	

11.14 (28.3)	

613 (278.1)	

F	

NA	

NA	

22-I

	45.0	

T379313SS	

25.31 (64.3)	

30.18 (76.7)	

12.76 (32.4)	

780 (354.0)	

F	

NA	

NA	

22-I

	75.0	

T379314SS	

26.82 (68.1)	

34.68 (88.1)	

15.25 (38.7)	

1126 (511.0)	

F	

NA	

NA	

22-I

Notes: 3.0 through 75.0 kVA units encapsulated (TP1 exempt)

	 GROUP G
480 DELTA PRIMARY VOLTS –– 240 DELTA / 120 TAP SECONDARY VOLTS
MAY BE USED ON A 4 WIRE 480Y/277 VOLT SUPPLY –– 3Ø, 60 Hz
			APPROX. DIMENSIONS	APPROX.	
TYPE MTG.		
	kVA②	
CATALOG NO.	Inches (Cm.)	
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

	

3.0	

T2A-533281S	

10.38 (26.4)	

12.37 (31.4)	

	

6.0	

T2A-533291S	

11.83 (30.0)	

	

9.0	

T2A-533401S	

14.03 (36.0)	

	 15.0	

T3-533411S	

	 30.0	

Weather	
Shield	
P/N	

Wiring Diagrams &
Design Figures
Begin on Page 122

7.47 (19.0)	

75 (34.0)	

W	

0.75-1.25 (1.9-3.2)	

NA	

25–F

14.17 (36.0)	

8.82 (22.4)	

140 (63.5)	

W	

0.75-1.25 (1.9-3.2)	

NA	

25–F

17.77 (45.1)	

11.52 (29.3)	

180 (81.6)	

W	

0.75-1.25 (1.9-3.2)	

NA	

25–F

18.86 (47.9)	

20.30 (51.6)	

9.03 (22.9)	

250 (113.0)	

F ①	NA	NA	 25–I

TP1533423S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

325 (147.0)	

F ①	 NA	WSA1	 26–E

	 45.0	

TP1533433S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

400 (181.0)	

F ①	 NA	WSA1	 26–E

	 75.0	

TP1533443S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

500 (226.8)	

F ①	 NA	WSA2	 26–E

	 112.5	

TP1533453S	

35.47 (91.2)	

31.90 (81.0)	

26.88 (68.3)	

750 (340.0)	

F	

NA	

WSA3	

26–E

	 150.0	

TP1533463S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

1125 (510.0)	

F	

NA	

WSA4	

26–E

	 225.0	

TP1533473S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

1200 (544.0)	

F	

NA	

WSA4	

26–E

	 300.0	

TP1533483S	

45.60 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

1550 (703.0)	

F	

NA	

WSA5	

26–G

	 500.0	

TP1533493S	

62.00 (157.5)	

54.00 (137.2)	

42.00 (106.7)	

2675 (1213.0)	

F	

NA	

WSA7	

26–G

	 750.0	

TP1533503S	

62.80 (159.5)	

54.00 (137.2)	

41.50 (105.4)	

3408 (1545.8)	

F	

NA	

WSA6	

26–G

Notes: 3.0 through 15.0 kVA units encapsulated (TP1 exempt), 30.0 through 750.0 kVA TP1 compliant. 3.0 kVA through 750.0 kVA provided with 120V lighting
tap limited to 5% of nameplate rating.

① Wall mounting brackets are available for these sizes, refer to page 133.
ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

25

SECTION
	 GROUP I

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

480 DELTA PRIMARY VOLTS –– 480Y/277 SECONDARY VOLTS
MAY BE USED ON A 4 WIRE 480Y/277 VOLT SUPPLY –– 3Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	 Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

	 15.0	

T335000153S	

18.86 (48.0)	

20.30 (51.6)	

9.03 (22.9)	

250 (113.0)	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

F ①	NA	 NA	

31–I

	 30.0	

TP35000303S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

325 (147.0)	

F ①	 NA	WSA2	

31–E

	 45.0	

TP135000453S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

400 (181.0)	

F ①	 NA	WSA2	

31–E

	 75.0	

TP35000753S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

600 (272.0)	

F ①	 NA	WSA2	

	 112.5	 TP35001123S	

35.47 (90.1)	

31.90 (81.0)	

26.88 (68.3)	

710 (322.0)	

F	

NA	

WSA3	

31–E
31–E

	 150.0	 TP35001503S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

1155 (524.0)	

F	

NA	

WSA4	

31–E

	 225.0	 TP35002253S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

1210 (548.8)	

F	

NA	

WSA4	

31–E

	 300.0	 TP35003003S	

45.60 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

1600 (726.0)	

F	

NA	

WSA5	

31–E

Notes: 15.0 kVA unit encapsulated (TP1 exempt), 30.0 through 300.0 kVA TP1 compliant

	 GROUP J
600 DELTA PRIMARY VOLTS –– 208Y/120 SECONDARY VOLTS –– 3Ø, 60 Hz 	
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

	

3.0	

T2A-793301S	

10.38 (26.4)	

12.37 (31.4)	

	

6.0	

T2A-793311S	

11.83 (30.0)	

	

9.0	

T2A-793321S	

14.03 (36.0)	

	 15.0	

T3-793331S	

	 30.0	

TP131023S	

7.47 (19.0)	

75 (34.0)	

W	

0.75-1.25 (1.9-3.2)	

NA	

28–F

14.17 (36.0)	

8.82 (22.4)	

140 (63.5)	

W	

0.75-1.25 (1.9-3.2)	

NA	

28–F

17.77 (45.1)	

11.52 (29.3)	

180 (81.6)	

W	

0.75-1.25 (1.9-3.2)	

NA	

28–F

18.86 (47.9)	

20.30 (51.6)	

9.03 (22.9)	

250 (113.0)	

F①	

NA	

NA	

28–I

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

325 (147.0)	

F ①	

NA	

WSA1	

29–E

	 45.0	

TP131033S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

400 (181.0)	

F ①	

NA	

WSA1	

29–E

	 75.0	

TP131043S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

600 (272.0)	

F ①	

NA	

WSA2	

29–E

	 112.5	

TP-131053S	

35.47 (90.1)	

31.90 (81.0)	

26.88 (68.3)	

750 (340.0)	

F	

NA	

WSA3	

29-E

	 150.0	

TP-131063S	

41.52 (105.5	

32.90 (83.6)	

29.87 (75.9)	

970 (440)	

F	

NA	

WSA4	

29-E

	 225.0	

TP-131073S	

41.52 (105.5	

32.90 (83.6)	

29.87 (75.9)	

1200 (544)	

F	

NA	

WSA4	

29-E

	 300.0	

TP-130993S	

45.60 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

1550 (703.0)	

F	

NA	

WSA5	

29-E

	 500.0	

TP-131123S	

57.84 (146.9)	

45.00 (114.3)	

41.50 (105.4) 	

2480 (1125.0)	

F	

NA	

WSA7	

29-E

	 750.0	

TP-131133S	

62.84 (159.6)	

54.00 (137.2)	

41.50 (105.4)	

3600 (1633.0)	

F	

NA	

WSA6	

29-E	

Notes: 3.0 through 15.0 kVA encapsulated (TP1 exempt), 30.0 through 75.0 kVA TP1 compliant

① Wall mounting brackets are available for these sizes, refer to page 133.
26

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

	 GROUP M

600 DELTA PRIMARY VOLTS –– 480Y/277 SECONDARY VOLTS –– 3Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

	 3.0	

T2A795161S	

10.38 (26.4)	

12.37 (31.4)	

7.47 (19.0)	

75 (34.0)	

W	

0.75-1.25 (1.9-3.2)	

NA	

55–F

	 6.0	

T2A795171S	

11.83 (30.0)	

14.17 (36.0)	

8.82 (22.4)	

140 (63.5)	

W	

0.75-1.25 (1.9-3.2)	

NA	

55–F

0.75-1.25 (1.9-3.2)	

NA	

55–F

	 9.0	

T2A795181S	

14.03 (38.8)	

17.77 (45.1)	

11.52 (29.3)	

180 (81.6)	

W	

	 15.0	

T3795191S	

18.86 (47.9)	

20.30 (51.6)	

9.03 (22.9)	

250 (113.0)	

F ①	

NA	NA	 55–I

	 30.0	

TP795203S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

400 (181.0)	

F ①	 NA	WSA2	51–E

	 45.0	

TP795213S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

425 (193.0)	

F ①	 NA	WSA2	51–E
F ①	 NA	WSA2	51–E

	 75.0	

TP795223S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

700 (318.0)	

	112.5	

TP795233S	

35.47 (90.1)	

31.90 (81.0)	

26.88 (68.3)	

750 (340.0)	

F	

NA	

WSA3	

51–E

	150.0	

TP795243S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

1125 (510.0)	

F	

NA	

WSA4	

51–E

Notes: 3.0 through 15.0 kVA units are encapsulated (TP1 exempt), 30.0 through 150.0 kVA are TP1 compliant

	 GROUP 0
208 DELTA PRIMARY VOLTS –– 208Y/120 SECONDARY VOLTS –– 3Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

	 3.0	

T2A792681S	

10.38 (26.4)	

12.37 (31.4)	

7.47 (19.0)	

75 (34.0)	

W	

0.75-1.25 (1.9-3.2)	

NA	

60–F

	 6.0	

T2A792691S	

11.83 (30.0)	

14.17 (36.0)	

8.82 (22.4)	

140 (63.5)	

W	

0.75-1.25 (1.9-3.2)	

NA	

60–F

	 9.0	

T2A792701S	

14.03 (36.0)	

17.77 (45.1)	

11.52 (29.3)	

180 (81.6)	

W	

0.75-1.25 (1.9-3.2)	

NA	

60–F

	 15.0	

T3-792711S	

18.86 (48.0)	

20.30 (51.6)	

9.03 (22.9)	

245 (111.0)	

F ①	NA	 NA	 60–I

	 30.0	

TP792724S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

300 (136.0)	

F ①	

NA	

WSA1	

61–E

	 45.0	

TP792734S	

25.48 (64.7)	

24.39 (61.9)	

19.37 (49.2)	

365 (166.0)	

F ①	

NA	

WSA1	

61–E	

	 75.0	
TP792744S	
29.41 (74.7)	
28.15 (71.5)	
22.37 (56.8)	
500 (227.0)	
F ①	
NA	
Notes: 3.0 through 15.0 kVA units are encapsulated (TP1 exempt), 30.0 through 75.0 kVA units are TP1 compliant

WSA2	

61–E

	 GROUP P
600 DELTA PRIMARY VOLTS –– 240 DELTA/120 TAP SECONDARY VOLTS –– 3Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	

	 30.0	

TP131423S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

299 (135.6)	

F ①	

NA	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

WSA1	

69–E

	 45.0	

TP131433S	

25.48 (64.7)	

24.39 (61.9)	

19.37 (49.2)	

353 (160.1)	

F ①	

NA	

WSA1	

69–E

	 75.0	

TP131443S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

463 (210.0)	

F ①	

NA	

WSA2	

69–E

Notes: 30.0 through 75.0 kVA units TP1 compliant

	 GROUP Q
240 DELTA PRIMARY VOLTS –– 480Y/277 SECONDARY VOLTS –– 3Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	

	 15.0	

T3-796931S	

18.86 (48.0)	

20.30 (51.6)	

9.03 (22.9)	

245 (111.1)	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

F ①	NA	 NA	

70–I

	 30.0	

TP796944S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

330 (149.7)	

F ①	

NA	

WSA1	

71–E	

	 45.0	

TP796954S	

25.48 (64.7)	

24.39 (61.9)	

19.37 (49.2)	

380 (172.4)	

F ①	

NA	

WSA1	

71–E

	 75.0	

TP796964S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

455 (206.4)	

F ①	

NA	

WSA2	

71–E

	112.5	

TP796974S	

35.47 (90.1)	

31.90 (81.0)	

26.88 (68.3)	

687 (311.6)	

F	

NA	

WSA3	

71–E

	150.0	

TP796984S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

973 (441.3)	

F	

NA	

WSA4	

71–E

Notes: 15 kVA unit encapsulated (TP1 exempt), 30.0 through 150.0 kVA TP1 compliant
① Wall mounting brackets are available for these sizes, refer to page 133.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

27

SECTION
	 GROUP T

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

380 DELTA PRIMARY VOLTS –– 220Y/127 SECONDARY VOLTS –– 3Ø, 50 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	

	 15.0	

T3795511S	

20.80 (52.8)	

20.90 (53.1)	

10.20 (25.9)	

435 (197.3)	

F	

NA	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

NA	

24–I	

	 30.0	

T2A795523S	

25.50 (64.8)	

24.40 (62.0)	

19.40 (49.3)	

365 (165.6)	

F ①	 NA	WSA1	 20–E

	 45.0	

T2A795533S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

468 (212.3)	

F ①	 NA	WSA2	 20–E

	 75.0	

T2A795543S	

35.47 (90.1)	

31.90 (80.0)	

26.88 (68.3)	

693 (314.3)	

F	

NA	

WSA3	

20–E

	 112.5	

T2A795553S	

41.52 (105.5)	

32.90 (83.6)	

29.87 (75.9)	

970 (440.0)	

F	

NA	

WSA4	

20–E

Notes: 50 Hz units (TP1 exempt)

	 GROUP U
440 DELTA PRIMARY VOLTS –– 220Y/127 SECONDARY VOLTS –– 3Ø, 50 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	

	 10.0	

TF220105S	

18.90 (48.0)	

20.30 (51.6)	

9.00 (22.9)	

245 (111.1)	

F ①	NA	NA	

73–I

	 15.0	

TF220155S	

25.50 (64.8)	

24.40 (62.0)	

19.40 (49.3)	

291 (132.0)	

F ①	 NA	WSA1	 73–E

	 25.0	

TF220255S	

25.50 (64.8)	

24.40 (62.0)	

19.40 (49.3)	

375 (170.1)	

F ①	 NA	WSA1	 73–E

	 50.0	

TF220505S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

437 (198.2)	

F ①	 NA	WSA2	 73–E

Notes: 50 Hz units (TP1 exempt)

① Wall mounting brackets are available for these sizes, refer to page 133.

28

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

	 GROUP V

190/200/208/220/240 DELTA PRIMARY VOLTS –– 400Y/231 SECONDARY VOLTS –– 3Ø, 60 Hz
				APPROX. DIMENSIONS		APPROX.	
TYPE MTG.		
	 kVA	
CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
			
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

	 15.0	

T379083S	

18.86 (47.9)	

20.30 (51.6)	

9.03 (22.9)	

300 (136.1)	

F ①	NA	NA	

75-I

	 30.0	

TP79085S	

29.90 (75.9)	

28.15 (71.5)	

22.37 (56.8)	

511 (231.8)	

F ⑤	 NA	WSA2	

74-E

	 45.0	

TP79087S	

25.50 (64.8)	

24.39 (62.0)	

19.37 (49.2)	

540 (244.9)	

F ⑤	 NA	WSA1	

	 75.0	
TP79088S	
35.90 (91.2)	
31.90 (81.0)	
26.88 (68.3)	
703 (318.9)	
Notes: 15.0 kVA unit encapsulated (TP1 exempt), 30.0 through 75.0 kVA units TP1 compliant

F	

NA	

WSA3	

74-E
74-E

AUTO-TRANSFORMERS

600 PRIMARY VOLTS –– 480 SECONDARY VOLTS –– 3Ø, 60 Hz
480 PRIMARY VOLTS –– 380 SECONDARY VOLTS –– 3Ø, 50/60 Hz ALTERNATE RATING
	
kVA		APPROX. DIMENSIONS	APPROX.	
TYPE MTG.		
600 Pri.	 480 Pri.	 CATALOG NO.		Inches (Cm.)		
SHIP WEIGHT	W – Wall	
Knockouts	
Lbs. (Kg.)	F – Floor	Inches (Cm.)	
Height	Width	 Depth	
480V Sec.	 380 Sec.		

	15.0	

12.0	 T2527031③	

15.21 (38.6)	

19.25 (48.9)	

7.37 (18.7)	

104 (47.2)	

W	

NA	

Weather	Wiring Diagrams &
Shield	
Design Figures
P/N	
Begin on Page 122

NA	

56–F

	30.0	

24.0	 T2527051③	

15.21 (38.6)	

19.25 (48.9)	

7.37 (18.7)	

152 (68.9)	

W	

NA	

NA	

56–F

	45.0	

36.0	 T2527071③	

15.21 (38.6)	

19.25 (48.9)	

7.37 (18.7)	

156 (70.8)	

W	

NA	

NA	

56–F

	75.0	

60.0	 T3527101③	

18.86 (47.9)	

20.30 (51.6)	

9.03 (22.9)	

300 (136.1)	

F ①	 NA	NA	

56–I

	112.5	

90.0	

25.50 (64.8)	

24.40 (62.0)	

19.40 (49.3)	

325 (147.0)	

F ⑤	 NA	WSA1	

57–E

T2A527121④	

	150.0	

120.0	 T2A527131④	

25.50 (64.8)	

24.40 (62.0)	

19.40 (49.3)	

350 (158.8)	

F ⑤	 NA	WSA1	

57–E

	225.0	

180.0	 T2A527151④	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

600 (272.0)	

F ⑤	 NA	WSA2	

57–E

F ⑤	 NA	WSA2	

	300.0	

240.0	 T2A527171④	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

650 (294.8)	

	450.0	

360.0	 T2A527181④	

35.47 (90.1)	

31.90 (81.0)	

26.88 (68.3)	

750 (340.0)	

F	

NA	

WSA3	

57–E

57–E

	500.0	

400.0	 T2A527191④	

35.47 (90.1)	

31.90 (81.0)	

26.88 (68.3)	

790 (358.3)	

F	

NA	

WSA3	

57–E

Notes: Auto-Transformers TP1 exempt

①	 Wall mounting brackets use PL-79911.
②	 If used on unbalanced loads, these units should only be used on a 4 wire
	 system with the supply neutral connected to the transformer. If used on 	
	 balanced loads, such as motor loads, then they may be used on a 3 wire 	
	 system without a neutral or 4th wire.

③	 These units are encapsulated with a 115° C temperature rise.
④	 These units are ventilated with 150° C temperature rise.
⑤	 Wall mounting brackets use PL-79912.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

29

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

Economical Auto Arrangements
Using two single phase transformers
THREE PHASE
480 PRIMARY (open delta) VOLTS ––
240 SECONDARY (open delta) VOLTS –– 3Ø, 60 Hz
				
Primary	
Secondary	
Max. Size
	kVA ①	
Qty. ②	
Catalog No. ③	Full Load	Full Load	Fuse or
				Amps	Amps	
Breaker

	3.0	

2	

T253010S	

3.60	

7.20	

10

	5.0	

2	

T253011S	

6.00	

12.00	

10

	6.0	

2	

T253012S	

7.20	

14.40	

15

	10.0	

2	

T2530134S	

12.00	

24.00	

15

	17.0	

2	

T2530144S	

20.50	

40.80	

30

	26.0	

2	

T2535153S	

31.50	

63.00	

40

	34.0	

2	

T2535163S	

41.00	

81.60	

60

	52.0	

2	

T2535173S	

63.00	

125.00	

80

	86.0	

2	

T2535183S	

104.00	

206.30	

150

	130.5	

2	

TP530193S	

157.00	

314.00	

200

	173.0	

2	

TP530203S	

209.00	

418.00	

300

	259.0	

2	

TP530213S	

312.00	

623.00	

400

	346.0	

2	

TP530223S	

417.00	

834.00	

600

	578.0	

2	

TP530233S	

696.00	

1392.00	

1000

	865.0	

2	

TP530243S	

1041.00	

2082.00	

1600

⑤ O = Fuse Location NEC 450-4, 1990.

600 PRIMARY VOLTS — 480 SECONDARY (open delta) VOLTS — 3Ø, 60 Hz
480 PRIMARY VOLTS — 380 SECONDARY (open delta) VOLTS — 3Ø, 50/60 Hz
Pri. 480V	
Pri.	
Sec.		
Catalog ③ 	 Max. Size
Sec. 380V	Amps	Amps	 Qty ②	No.④	Fuse or
kVA ①					Breaker

2	

T253011S	

15

	 17.0	

16.33	  20.41	  13.5	  16.33	  20.41	

2	

T253012S	

25

	 25.0	

24.06	  30.01	  20.0	  24.06	  30.01	

2	

T2530134S	

30

	 43.0	

41.38	  51.70	  34.0	  41.38	  51.70	

2	

T2530144S	

60

	 64.0	

61.59	  77.00	  51.0	  61.59	  77.00	

2	

T2535153S	

80

	 86.0	

82.76	 103.44	  68.0	  82.76	 103.44	

2	

T2535163S	

110

	129.0	

124.13	 155.20	 103.0	 124.13	 155.20	

2	

T2535173S	

175

	216.0	

207.85	 259.80	 172.0	 207.85	 259.80	

2	

T2535183S	

	324.0	

311.78	 389.70	 259.0	 311.78	 389.70	

2	

TP530193S	400

	433.0	

416.67	 520.83	 346.0	 416.67	 520.83	

2	

TP530203S	600

	650.0	

625.00	 781.00	 519.0	 625.00	 781.00	

2	

TP530213S	800

	865.0	

833.00	

2	

TP530223S	1200

1040.00	 692.0	 833.00	

1051.00	

2	TP530233S	2000

2164.0	
	
2083.00	2602.00	 1731.0	2083.00	2629.00	

2	TP530243S	3000

X
X

H

OPEN DELTAAUTO

①	 kVA capacity of three phase autotransformer bank, using two single phase, 60 Hz transformers 			
		connected open delta.
②	 Catalog No. is for 1 transformer, 2 units are required.
③	 Can be reverse connected with no change in kVA.
④ 	For transformer dimensions, refer to appropriate table in section 1, page 17.
⑤ 	For proper overcurrent protection, refer to Article 450-4 of N.E.C.
The diagrams above are for illustration purposes only. Please contact the factory for construction details.
Each Acme transformer is shipped with detailed wiring diagrams. Refer to nameplate located inside the front
cover for specific voltage tap combinations.

30

X
X
X
X

300

1445.0	
	
1391.00	1738.00	 1156.0	1391.00	1756.00	

A
B
C

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

480
OR
380
VOLTS

#2

14.40	   9.5	  11.55	  14.40	

X
X

S.

	 12.0	  11.55	

DIAGRAM SHOWS NO TAP UNITS ONLY
600
OR
480
VOLTS

AN

15

#1

T253010S	

S.

2	

AN

9.60	   6.5	   7.80	   9.60	

TR

	 8.0	   7.70	

TR

	 Pri. 600V	
Pri.	
Sec.	
	 Sec. 480V	Amps	Amps	
	 kVA ①			

H

H

H
H

H
H

H
A
B
C

⑤ O = Fuse Location NEC 450-4, 1990.

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

Auto Zig-Zag Grounding Transformers
For developing a neutral from a three phase, 3-wire supply

PRIMARY (INPUT): 480 VOLTS
3Ø, 3 WIRE	

		
① 50/60 Hz

SECONDARY (OUTPUT): 480Y/277 VOLTS
3Ø, 4 WIRE

	

	
		
		
Max. Continuous
Use 3 Pieces
Nameplate	No. of
	
	Available	
	
Three Phase	Amp. Load Per
of
kVA	Tfmr.
	
	In	
	kVA	 Phase
Type No.④
For Each Tfmr.	Required
						
(277 Volts)

	

T253010S	

No Taps Only	  1.0	

3	  10.80	  12.50

	

T253011S	

No Taps Only	  1.5	

3	  15.60	  18.75

	

T253012S	

No Taps Only	  2.0	

3	  20.70	  25.00

	

T2530134S	

Taps & No Taps	  3.0	

3	  31.20	  37.50

	

T2530144S	

Taps & No Taps	  5.0	

3	  51.90	  62.50

	

T2535153S	

With Taps Only	  7.5	

3	  78.00	  93.50

	

T2535163S	

With Taps Only	 10.0	

3	 103.80	 125.00

	

T2535173S	

With Taps Only	 15.0	

3	 156.00	 187.50

	

T2535183S	

With Taps Only	 25.0	

3	 259.50	 312.00

	

TP530193S	

With Taps Only	 37.5	

3	 390.00	 468.00

	

TP530203S	

With Taps Only	 50.0	

3	 519.00	 625.00

	

TP530213S	

With Taps Only	 75.0	

3	 780.00	 935.00

	

TP530223S	

With Taps Only	

100.0	

3	

1038.00	

1250.00

	

TP530233S	

With Taps Only	

167.0	

3	

1734.00	

2085.00

See Footnote ②
COMMON TRIP DEVICE
C
A

INPUT
480 V
3Ø
3 WIRE

A
A
C
NEUTRAL

B

POINT
A,B OR C
TO
NEUTRAL
YIELDS
277 V
SINGLE
PHASE
4 WIRE

B

C

X

X

X
X

X
X

X
X

X

X

X

H

H

H

H

H

H

H

H

H

H

H

H

X

B

NEUTRAL
TRANS. #1

TRANS. #2

TRANS. #3

O = Fuse Location NEC 450-4, 1990. ③

① 	Applicable for the above connection only.
② 	Connection diagram (using 3 pieces of 1 phase, 60 hertz transformers connected zig-zag auto) for developing a neutral (4th wire) from a 3 phase,
	 3 wire supply.
③ 	For proper over-current protection, refer to the N.E.C. Article 450-5.
④ 	For transformer dimensions, refer to appropriate table in section 1, page 17.
Each Acme transformer is shipped with detailed wiring diagrams. Refer to nameplate located inside the front
cover for specific voltage tap combinations.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

31

SECTION

1

DRY-TYPE DISTRIBUTION TRANSFORMERS

Do You Have a Non-Standard Three Phase
Voltage Application?
Many non-standard voltage correction problems can be solved
by using standard off-the-shelf single phase transformers.
The following is a list of such voltage combinations that can be
supplied by the Power Distribution Products Division. Drawings

for these products can be downloaded from our website at
www.acmepowerdist.com. If you don’t find the particular
combination you are looking for, contact our technical services
department for further assistance at 1-800-334-5214.

THREE PHASE
		
Voltages		Available		Acme
Type of
				
kVA	
	Drawing
Circuit
	 Input		Output	Range	
	No.

		
Voltages		Available		Acme
Type of
				
kVA	
	Drawing
Circuit
	 Input		Output	Range	
	No.

A-125879

	416Y/240		 208Y/120	

3-15	

Isolation	

A-700319

Auto Zig-Zag ①	A-125895

	416Y/240		 208Y/120	

22.5-75	

Isolation	

A-700322

	 208 Delta	

208Y/120	

3-75	

	 208 Delta	

208Y/120	

3-86	

Isolation	

	 208 Delta	

240 Delta/120	

1.68-25.2	

O.D. ISO	

A-700314

	 480 Delta		 240 Delta/120	

1.68-5.04	

O.D. ISO Hi-Leg ①	A-125849

	 208 Delta	

240 Delta	

3-75	

Isolation	

A-125880

	 480 Delta		 240 Delta/120	

3.36	

O.D. ISO Hi-Leg ①	A-125850

	 208 Delta	

416Y/240	

3-75	

Isolation	

A-700598

	 480 Delta		 240 Delta/120	

5.04	

O.D. ISO Hi-Leg ①	A-125851

	 208 Delta	

416Y/240	

112.5-300	

Isolation	

A-700591

	 480 Delta		 240 Delta/120	

8.4	

O.D. ISO Hi-Leg ①	A-125852

	208Y/120	

208Y/120	

3-75	

Isolation	

A-125857

	 480 Delta		 240 Delta/120	

12.6-25.2	

O.D. ISO Hi-Leg ①	A-125853

	208Y/120	

374Y/216	

22.5-75	

Isolation	

A-125883

	 480 Delta		 240 Delta/120	

42	

O.D. ISO Hi-Leg ①	A-125854

	208Y/120	

374Y/216	

112.5-750	

Isolation	

A-102730

	 480 Delta		 240 Delta/120	

63-266	

O.D. ISO Hi-Leg ①	A-111702

	 208Y/120	

480Y/277	

3-75	

Isolation	

B-39881 (pg 2)

	 480 Delta		

240 Delta	

1.68-8.4	

O.D. ISO	

A-32817-B

	 240 Delta	

208Y/120	

3-15	

Isolation	

A-125855

	 480 Delta		

240 Delta	

5.04-8.4	

O.D. ISO	

A-125872

	 240 Delta	

208Y/120	

9-15	

Isolation	

A-102723

	 480 Delta		

240 Delta	

12.6-42	

O.D. ISO	

A-125873

	 240 Delta	

208Y/120	

22.5-75	

Isolation	

A-102722-B

	 480 Delta		

240 Delta	

63-420	

O.D. ISO	

A-125874

	 240 Delta	

208Y/120	

112.5-750	

Isolation	

A-125856

	 480 Delta		

416Y/240	

3-15	

Isolation	

A-125875

	 240 Delta	

208Y/120	

3-75	

Isolation	

A-125858

	 480 Delta		

416Y/240	

9-15	

Isolation	

A-125876

	 240 Delta	

240 Delta	

3-75	

Isolation	

A-125859

	 480 Delta		

416Y/240	

22.5-75	

Isolation	

A-125877

Auto Zig-Zag ①	A-125896

	 240 Delta	

240Y/138	

10.3-258.75	

	 480 Delta		

416Y/240	

112.5-750	

Isolation	

A-125878

	 240 Delta	

374Y/216	

22.5-75	

Isolation	

A-125881

	 480 Delta		

394Y/228	

9-15	

Isolation	

A-125884

	 240 Delta	

374Y/216	

112.5-750	

Isolation	

A-125882

	 480 Delta		

394Y/228	

22.5-75	

Isolation	

A-125885

	 240 Delta	

480Y/277	

3-75	

Isolation	

B-39881 (pg 1)

	 480 Delta		

394Y/228	

112.5-750	

Isolation	

A-125886

	 380 Delta	

240 Delta	

3-75	

Isolation	

A-700592

	 600 Delta		

208Y/120	

3-6	

Isolation	

A-102758

	 380 Delta	

240 Delta	

112.5-300	

Isolation	

A-700593

	 600 Delta		

208Y/120	

9-75	

Isolation	

A-125863

	 380 Delta	

228 Delta	

1.4-7.0	

O.D. Auto	

A-35633

	 600 Delta		

208Y/120	

112.5-500	

Isolation	

A-125864

	 380 Delta	

228 Delta	

4.2-7.0	

O.D. Auto	

A-125892

	 600 Delta		

240 Delta	

3-6	

Isolation	

A-125860

	 380 Delta	

228 Delta	

10.4-34.5	

O.D. Auto	

A-125893

	 600 Delta		

240 Delta	

9-75	

Isolation	

A-125861

	 380 Delta	

228 Delta	

51-227	

O.D. Auto	

A-125894

	 600 Delta		

240 Delta	

112.5-500	

Isolation	

A-125862

	 380 Delta	

416Y/240	

3-75	

Isolation	

A-700599

	 600 Delta		 240 Delta/120	

1.68-2.52	

O.D. ISO Hi-Leg ①	A-125865

	 380 Delta	

416Y/240	

112.5-300	

Isolation	

A-700594

	 600 Delta		 240 Delta/120	

3.36	

O.D. ISO Hi-Leg ①	A-125866

	 380Y/220	

240 Delta	

3-75	

Isolation	

A-700600

	 600 Delta		 240 Delta/120	

5.04-25.2	

O.D. ISO Hi-Leg ①	A-125867

	 380Y/220	

240 Delta	

112.5-300	

Isolation	

A-700595

	 600 Delta		 240 Delta/120	

42	

O.D. ISO Hi-Leg ①	A-125868

	 416Y/240	

440 Delta	

3-75	

Isolation	

A-700602

	 600 Delta		 240 Delta/120	

63-168	

O.D. ISO Hi-Leg ①	A-125869

	 416Y/240	

440 Delta	

112.5-300	

Isolation	

A-700597

	 600 Delta		

240 Delta	

1.68-3.36	

O.D. ISO	

A-33227-A

	 416 Delta	

240 Delta	

3-75	

Isolation	

A-700601

	 600 Delta		

240 Delta	

5.04-42	

O.D. ISO	

A-125870

	 416 Delta	

240 Delta	

112.5-300	

Isolation	

A-700596

	 600 Delta		

240 Delta	

63-280	

O.D. ISO	

A-125871

KEY:
O.D. — Open Delta	
ISO — Isolation	
AUTO — Autotransformer	

① Cannot Be Reverse Connected.

32

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

HARMONIC
MITIGATING
TRANSFORMERS
General Description & Features ....................... 34
Selection Charts................................................ 35

2

SECTION

2

HARMONIC MITIGATING TRANSFORMERS

Harmonic Mitigating Transformers
FEATURES
Unlike K-rated transformers, Harmonic Mitigating
transformers actually treat the triplen harmonics
in the secondary winding
Reduce supply voltage flat topping caused by
non-linear loads
Improve overall power factor of supply system
Suitable for K-Factor loads
Improved energy efficiency (Meet TP1 at K-1 load)
Copper conductor construction

APPLICATIONS
Financial facilities
Many of today’s electronic devices are non-linear loads
generating high levels of harmonic currents that are then
fed back onto your distribution system. This waveform
distortion results in overheating of motors and transformers,
increased neutral currents and malfunction/damage to
other equipment on the line.
Acme Electric introduces a line of harmonic mitigating
transformers that combine the technologies shown in our
non-linear load (K-Factor) transformers. Where conventional
K-Factor transformers “deal” with harmonics, containing them
within the transformer and preventing them from going
further upstream; harmonic mitigating transformers eliminate
harmonics by pitting them against themselves. This technology not only results in “cleaner power” but also provides the
most energy efficient means to deal with harmonic problems.

Educational facilities

TV Broadcast facilities
Office buildings
Hospitals
Health care facilities

DIMENSIONAL DRAWING

D

Available in sizes ranging from 30 thru 225 kVA, with copper
windings and a variety of other design options and accessories, Acme harmonic mitigating transformers offer you
reduced transformer heat, reduced voltage distortion due to
3rd order harmonics, higher efficiency.

H

W

34

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

2

HARMONIC MITIGATING TRANSFORMERS

SELECTION CHARTS
HARMONIC MITIGATING TRANSFORMERS
480 DELTA PRIMARY VOLTS — 208Y/120 SECONDARY VOLTS
HEIGHT

WIDTH

DEPTH

APPROX.
SHIP WEIGHT
Lbs. (Kg.)

30.0

CMT533124S

29.90 (75.9)

28.15 (71.5)

22.37 (56.8)

535 (242.7)

F

WSA2

81-E

45.0

CMT533134S

29.90 (75.9)

28.15 (71.5)

22.37 (56.8)

600 (272.2)

F

WSA2

81-E

F

kVA

APPROX. DIMENSIONS
Inches (Cm.)

CATALOG NO.

TYPE MTG.
W – Wall
F – Floor

WEATHER
SHIELD
P/N

Wiring Diagrams &
Design Figures
Begin on Page 122

75.0

CMT533144S

35.90 (91.2)

31.90 (81.0)

26.88 (68.3)

760 (344.7)

WSA3

81-E

112.5

CMT533154S

41.52 (105.5)

32.90 (83.6)

29.88 (75.9)

1180 (535.2)

F

WSA4

81-E

150.0

CMT533164S

41.52 (105.5)

32.90 (83.6)

29.88 (75.9)

1340 (607.8)

F

WSA4

81-E

225.0

CMT533174S

41.52 (105.5)

32.90 (83.6)

29.88 (75.9)

1970 (893.6)

F

WSA4

81-E

MITIGATING TRANSFORMER WIRING DIAGRAM
PRIMARY: 480 Volts Delta
SECONDARY: 208Y/ 120 Volts
TAPS: 2, 2 1/2 % ANFC, 2, 2 1/2 % BNFC

81

H2

H1
54 3 21

H3

Diagram Showing Delta Primary &
Zig-Zag Secondary

54 321

54 321

(Zero degree angular displacement)

X0
X1

X2

Connect
Primary
Primary
Volts
Lines To
504
H1, H2, H3
492
H1, H2, H3
480
H1, H2, H3
468
H1, H2, H3
456
H1, H2, H3
Secondary Volts
208
120
1 phase

X3

InterConnect
1
2
3
4
5

Connect
Secondary
Lines To

H2

X2

X0
X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

H1

H3

X1

X3

Harmonic Mitigating Transformers – How do they work?
They consist of a Delta primary and a Zig-Zag secondary.
The Zig-Zag secondary causes a phase shift in the triplen
harmonics, which results in a canceling effect. This prevents

the triplen harmonic losses from being coupled back into
the primary and results in cooler operation and increased
energy efficiency.

The Acme Advantages
1. Acme utilizes special winding techniques and “foil”
conductors in both its K-Factor and Harmonic Mitigating
transformers to minimize the heating effects of harmonic
currents.

2. The use of foil conductor increases the dielectric strength
of the insulation because one layer is only one turn. Foil
also eliminates the effects of axial forces, which can result
in failure of wire wound transformers.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

35

SECTION

2

HARMONIC MITIGATING TRANSFORMERS

NOTES

36

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

NON-LINEAR
LOAD ISOLATION®
TRANSFORMERS
Special winding techniques minimize
eddy current losses. A double sized
neutral handles excessive neutral
currents. UL Listed for “K” Factor
Loads 4, 13 & 20.
General Description & Features ..................38-39
Selection Charts...........................................40-41
Definition of Terms ............................................ 42

3

SECTION

3

NON-LINEAR LOAD ISOLATION® TRANSFORMERS

Non-Linear Load Isolation® Transformers
FEATURES
Available in K-factors of 4, 13 and 20. Consult factory
for other K-factors.
150°C, 115°C and 80°C temperature rise units.
10-year limited warranty.
UL Listed and CSA Certified.
Available in 480V and 600V primary, 15 through 600 kVA.
1

1

Primary taps: (2) 2 /2 % ANFC, (4) 2 /2 % BNFC.
Aluminum windings

The following guide will help you select the proper
transformer when the K-factor is unknown.*

K-Factor/Type of Load
Non-linear loads generate high levels of harmonic currents. When
supplying power to these loads, a special transformer design is
necessary.
Typical non-linear loads include desktop computers, AC variable
speed drives, HID lighting, electronic ballasts, inverters and welders.
Of these non-linear loads, the major source of harmonic currents is
the switch mode power supply found in desktop computers, data
processors and other office equipment.
Acme non-linear load isolation transformers use special winding
techniques to minimize eddy current losses generated by
harmonic currents. A double-sized neutral conductor handles the
excessive neutral current found in non-linear load applications.
The amount of harmonics produced by a given load is represented by
the term “K” factor. The larger the “K” factor, the more
harmonics are present. Linear loads have a “K” factor of 1; switch
mode power supplies typically have a “K” factor as high as 20.
Acme non-linear load isolation transformers are shielded for cleaner
power and carry the Acme exclusive 10-year limited warranty.

K-1

Resistance heating
Incandescent lighting
Motors
Transformers, control/distribution

K-4

Welders
Induction heaters
HID lighting
Fluorescent lighting
Solid state controls

K-13 Telecommunications equipment
Branch Circuits in classrooms
and health care facilities

K-20 Main frame computers
Variable speed drives
Branch circuits with exclusive
loads of Data Processing
equipment
Desktop computers
* These ratings are to be used as a guide
only. They may vary from one load equipment
manufacturer to another. A Spectrum Analysis is the
best source.
Note: Non-sinusoidal and non-linear are
synonymous terms relating to the same
transformer type.

38

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

3

NON-LINEAR LOAD ISOLATION® TRANSFORMERS

Industry standard full
capacity taps

Heavy gauge steel UL Type 2
enclosures, UL-3R Listed with
weather shield accessory

Wound core construction for lower
losses and quiet operation

Faraday shield eliminates
noise and voltage spikes

Vibration isolation pads
reduce noise

Large legible
nameplates on
front cover

Rigid steel bottom is
punched for ventilation
Aluminum or copper
windings for increased life,
lower current losses

Weather shields are available from stock
and are easily field-installed to make the
transformer weather resistant.

Double-sized neutral
conductor handles excessive neutral currents

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

39

SECTION

3

NON-LINEAR LOAD ISOLATION® TRANSFORMERS

SELECTION CHARTS

THREE PHASE

GROUP A, K FACTOR 20, 150°C RISE
480 DELTA PRIMARY VOLTS — 208Y/120 SECONDARY VOLTS — 3Ø, 60 Hz
APPROX. DIMENSIONS
Inches (Cm.)

APPROX.
SHIP WEIGHT
Lbs. (Kg.)

TYPE MTG.
W – Wall
F – Floor

WEATHER
SHIELD
P/N

Wiring Diagrams &
Design Figures
Begin on Page 122

kVA

CATALOG NO.
HEIGHT

WIDTH

DEPTH

15.0

TPNS02533113S

25.50 (64.8)

24.40 (62.0)

19.40 (49.3)

325 (147.0)

F

WSA1

22–E

30.0

TPNS02533123S

25.50 (64.8)

24.40 (62.0)

19.40 (49.3)

420 (191.0)

F

WSA1

22–E

45.0

TPNS02533133S

35.90 (91.2)

31.90 (81.0)

26.88 (68.3)

575 (261.0)

F

WSA3

22–E

75.0

TPNS02533143S

35.90 (91.2)

31.90 (81.0)

26.88 (68.3)

620 (281.0)

F

WSA3

22–E

112.5

TPNS02533153S

41.52 (105.5)

32.90 (83.6)

29.88 (75.9)

1200 (544.0)

F

WSA4

22–E

150.0

TPNS02533163S

41.52 (105.5)

32.90 (83.6)

29.88 (75.9)

1700 (771.0)

F

WSA4

22–E

225.0

TPNS02533173S

45.60 (115.8)

39.50 (100.3)

35.50 (90.2)

2165 (982.0)

F

WSA5

22–G

TYPE MTG.
W – Wall
F – Floor

WEATHER
SHIELD
P/N

Wiring Diagrams &
Design Figures
Begin on Page 122

Notes: All TPNS models are TP1 compliant

GROUP B,K FACTOR 13, 150°C RISE
480 DELTA PRIMARY VOLTS — 208Y/120 SECONDARY VOLTS — 3Ø, 60 Hz
APPROX. DIMENSIONS
Inches (Cm.)

APPROX.
SHIP WEIGHT
Lbs. (Kg.)

kVA

CATALOG NO.
HEIGHT

WIDTH

DEPTH

15.0

TPNS01533113S

25.50 (64.8)

24.40 (62.0)

19.40 (49.3)

325 (147.0)

F

WSA1

22–E

30.0

TPNS01533123S

29.90 (75.9)

28.15 (71.5)

22.37 (56.8)

360 (163.0)

F

WSA2

22–E

45.0

TPNS01533133S

29.90 (75.9)

28.15 (71.5)

22.37 (56.8)

440 (200.0)

F

WSA2

22–E

75.0

TPNS01533143S

35.90 (91.2)

31.90 (81.0)

26.88 (68.3)

600 (272.0)

F

WSA3

22–E

112.5

TPNS01533153S

41.52 (105.5)

32.90 (83.6)

29.88 (75.9)

870 (395.0)

F

WSA4

22–E

150.0

TPNS01533163S

41.52 (105.5)

32.90 (83.6)

29.88 (75.9)

1500 (680.0)

F

WSA4

22–E

225.0

TPNS11533173S

45.60 (115.8)

39.50 (100.3)

35.50 (90.2)

1550 (703.0)

F

WSA5

22–E

TYPE MTG.
W – Wall
F – Floor

WEATHER
SHIELD
P/N

Wiring Diagrams
Design Figures
Begin on Page 122

WSA1

22–E

Notes: All TPNS models are TP1 compliant

GROUP C, K FACTOR 4, 150°C RISE
480 DELTA PRIMARY VOLTS — 208Y/120 SECONDARY VOLTS — 3Ø, 60 Hz
kVA

CATALOG NO.

15.0

TPNS00533113S

APPROX. DIMENSIONS
Inches (Cm.)
HEIGHT

WIDTH

DEPTH

APPROX.
SHIP WEIGHT
Lbs. (Kg.)

25.50 (64.8)

24.40 (62.0)

19.40 (49.3)

325 (147.0)

F

30.0

TPNS00533123S

29.90 (75.9)

28.15 (71.5)

22.37 (56.8)

345 (157.0)

F

WSA2

22–E

45.0

TPNS00533133S

29.90 (75.9)

28.15 (71.5)

22.37 (56.8)

430 (195.0)

F

WSA2

22–E

75.0

TPNS00533143S

35.90 (91.2)

31.90 (81.0)

26.88 (68.3)

560 (254.0)

F

WSA3

22–E

112.5

TPNS00533153S

41.52 (105.5)

32.90 (83.6)

29.88 (75.9)

875 (397.0)

F

WSA4

22–E

150.0

TPNS00533163S

41.52 (105.5)

32.90 (83.6)

29.88 (75.9)

1550 (703.0)

F

WSA4

22–E

225.0

TPNS10533173S

45.60 (115.8)

39.50 (100.3)

35.50 (90.2)

1600 (725.8)

F

WSA5

22–E

Notes: All TPNS models are TP1 compliant

Wall mounting brackets are available for these sizes, refer to page 133.
Dimensions in this section may change and are not to be used for detailed construction purposes. Please contact the factory for certified dimensional drawings.

40

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

3

NON-LINEAR LOAD ISOLATION® TRANSFORMERS

GROUP H, K FACTOR 13, 115°C RISE
480 DELTA PRIMARY VOLTS — 208Y/120 SECONDARY VOLTS — 3Ø, 60 Hz
kVA

APPROX. DIMENSIONS
Inches (Cm.)

CATALOG NO.
HEIGHT

WIDTH

DEPTH

APPROX.
SHIP WEIGHT

TYPE MTG.
W – Wall

WEATHER
SHIELD

Wiring Diagrams &
Design Figures

Lbs. (Kg.)

F – Floor

P/N

Begin on Page 122

30.0

TPNS01533121S

29.90 (75.9)

28.20 (71.6)

22.40 (56.9)

400 (181.0)

WSA2

22–E

45.0

TPNS01533131S

35.90 (91.2)

31.90 (81.0)

26.90 (68.3)

575 (261.0)

F
F

WSA3

22–E

75.0

TPNS01533141S

35.90 (91.2)

31.90 (81.0)

26.90 (68.3)

750 (340.0)

F

WSA3

22–E

112.5

TPNS01533151S

41.50 (105.4)

32.90 (83.6)

29.90 (75.9)

1120 (508.0)

F

WSA4

22–E

150.0

TPNS01533161S

41.50 (105.4)

32.90 (83.6)

29.90 (75.9)

1200 (544.0)

F

WSA4

22–E

TYPE MTG.
W – Wall
F – Floor

WEATHER
SHIELD
P/N

Wiring Diagrams &
Design Figures
Begin on Page 122

Notes: All TPNS models are TP1 compliant

GROUP M, K FACTOR 13, 150°C RISE
208 DELTA PRIMARY VOLTS — 208Y/120 SECONDARY VOLTS — 3Ø, 60 Hz
kVA

CATALOG NO.

APPROX. DIMENSIONS
Inches (Cm.)
HEIGHT

WIDTH

DEPTH

APPROX.
SHIP WEIGHT
Lbs. (Kg.)

15.0

TPNS01792714S

25.50 (64.8)

24.90 (62.0)

19.37 (49.2)

320 (145.1)

F

WSA1

61-E

30.0

TPNS01792724S

25.50 (64.8)

24.90 (62.0)

19.37 (49.2)

366 (166.0)

F

WSA1

61-E

45.0

TPNS01792734S

29.40 (74.7)

28.15 (71.5)

22.37 (56.8)

522 (236.8)

F

WSA2

61-E

75.0

TPNS01792744S

35.40 (89.9)

31.90 (81.0)

26.87 (68.2)

667 (302.6)

WSA3

61-E

F

Notes: All TPNS models are TP1 compliant

Notes: All TPNS models are TP1 compliant

For Additional Low Temperature Rise 115° and 80° Degree Units and Copper Wound Units,
Consult Factory
NON-LINEAR LOAD ISOLATION® WIRING DIAGRAMS (Refer to pgs 122-124)
NON-LINEAR LOAD ISOLATION® DESIGN FIGURES (Refer to pg 122)

Wall mounting brackets are available for these sizes, refer to page 133.
Dimensions in this section may change and are not to be used for detailed construction purposes. Please contact the factory for certified dimensional drawings.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

41

SECTION

3

NON-LINEAR LOAD ISOLATION® TRANSFORMERS

1. Linear loads

8. Voltage harmonic distortion (VHD)

Loads where the current waveform conforms to the waveform
of the applied voltage. Or loads where a change in current
is directly proportional to a change in applied voltage. For
example:

Voltage harmonic distortion is distortion caused by harmonic
currents flowing through the system impedance. The utility
power system has relatively low system impedance, and the
VHD is very low. But, VHD on the distribution power system
can be significant due to its relatively high system impedance.

• Resistance heating
• Incandescent lighting
• Water heater

9. Total harmonic distortion (THD)

2. Non-linear loads
Loads where the current waveform does not conform to the
waveform of the applied voltage. Or loads where a change in
current is not proportional to a change in applied voltage.
Examples are:
• Computer power supplies
• Motor drives
• Fluorescent lighting
Non-linear loads produce non-sinusoidal current or voltage
waveforms.

3. Sinusoidal current or voltage
This term refers to a periodic waveform that can be expressed
as the sine of a linear function of time.

4. Non-linear currents or voltages
A waveform of current or voltage which cannot be expressed
as the sine of a linear function of time. A non-linear load would
result in a non-sinusoidal current or voltage.

A sinusoidal waveform with a frequency that is an integral
multiple of the fundamental 60 Hz frequency.
Fundamental
2nd Harmonic
3rd Harmonic
4th Harmonic

1: The vector sum of the fundamental current and the total
harmonic distortion.
2: Square root of the sum of the squared value of the
fundamental current and the squared value of the total
harmonic distortion.

11. Eddy currents
Currents flowing in a conducting material in the presence of a
time varying magnetic field. These currents are in addition to
the current drawn by the load.

12. Eddy current losses
Power dissipated due to eddy currents. Includes eddy current
losses in the core, windings, case and associated hardware of
a transformer.

A term used to express the difference
between the measured alternating current losses on a
transformer and the direct current (DC) losses (I2R). Stray
losses include eddy losses. Stray losses are usually
expressed as a percent of the direct current (DC) losses.

14. Per unit value

Current waveforms from non-linear loads appear distorted
because the non-linear waveform is the result of adding
harmonic components to the fundamental current.

6. Triplen harmonics
Odd multiples of the 3rd harmonic
(3rd, 9th, 15th, 21st, etc.).

7. Harmonic distortion
Non-linear distortion of a system
characterized by the appearance in the output of harmonic
currents (voltages) when the input is sinusoidal.

42

10. Root mean squared current
(or voltage) RMS

13. Stray losses

5. Harmonic

60 Hz
120 Hz
180 Hz
240 Hz
etc.

The square root of the sum of the squares of all harmonic
currents present in the load excluding the 60 Hz fundamental.
It is usually expressed as a percent of the fundamental.

1: Percent value divided by 100.
2: The ratio of two components of a system.

15. Harmonic spectrum “K” factor
The sum of the product of each harmonic current squared
and that harmonic number squared for all harmonics from
the fundamental (60 Hz) to the highest harmonic of any
measurable consequence. When the “K” factor is multiplied
by the stray losses of the transformer, the answer represents
the losses in the transformer caused by harmonic currents.
When these losses are added to the I2 R losses of the
transformer, the total load losses are known. The “K” factor for
a linear load without harmonics is one (1).

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

Drive Isolation
Transformers & AC Line
Reactors
Specifically designed to accommodate
the special voltage and kVA sizes
unique to AC and DC drive applications.
Shielded for extra protection from
supply line transients.
General Description & Features......................44-45
Thermal Switches.................................................47
Selection Charts...............................................46-47
Windings, Terminations & Construction...............47

AC Line Reactors are designed to
protect DC motor drives, AC vaåriable
frequency drives and the motors
they power.
AC LINE REACTORS
General Description & Features.......................48-49
Selection Charts....................................................50

4

SECTION

4

DRIVE ISOLATION TRANSFORMERS

Drive Isolation Transformers
The Acme Drive Isolation Transformers are specifically designed to accommodate the
special voltages and kVA sizes unique to AC and
DC motor drive applications.

FEATURES
	UL Type 3R Enclosures with Weather Shield
on Ventilated Units (above 20 kVA). Type 2
Enclosure without weather shield. UL Listed and
CSA certified. 7.5–20.0 kVA are encapsulated,
UL 3R.

n

	 3-Phase 60 Hertz.

n

	180°C and 220°C insulation systems.

n

n	
Encapsulated and ventilated designs. All
	 ventilated units, are of strip wound construction. 	
Acme’s reinforced core assemblies enhance 	
	 quiet operation.

	Nominally 6% impedance.

n

DTGB0404S

DTHA03304S
DTGA72S

	Designed for use with AC, adjustable frequency
or DC drives.

n

	Full capacity taps are featured on all units. On
7.5 through 20 kVA units, taps are 1-5% ANFC
and 1-5% BNFC. On 27 through 660 kVA units,
1
1
taps are 2-2 /2 % ANFC and 2-2 /2 % BNFC.

DTGA0142S

n

	Full range of kVA ratings cover all standard
drive systems.

n

	Ample wiring compartment for easy cable entry.

n

	Optional wall mounting brackets for certain sizes.

n

Stress relief
Acme uses strip conductors (above 7.5 kVA)
instead of wire for a DIT series that easily
accommodates the severe electrical and
mechanical stresses found in today’s AC & DC
motor drives. The inherent excellent line isolation
of these transformers is further enhanced with
the extra protection of Acme’s Electrostatic
Shield — free in all DIT’s.

Lower losses
The harmonic currents generated by AC & DC
drives increase eddy current losses (heat) in
transformer windings. The thicker the winding
conductor, the greater the losses. Acme uses
one turn per layer of thin strip conductor which
provides lower eddy current losses than
comparable wire wound units. Lower losses =
cooler operation and longer transformer life.

44

Reduced short
circuit forces
Strip windings minimize axial
short circuit forces that can cause
mechanical displacement of the
windings under fault conditions.
For extra protection all designs 7.5
kVA and above use primary and
secondary coils of equal axial length.
This feature tends to negate axial
short circuit forces, further improving
transformer life expectancy.

Selection
instructions
If you know the motor horse-power,
simply follow the drive system
manufacturer's recommendation. Or,
select the corresponding kVA from
the chart at right.
For example, a 40 Hp motor requires a
51 kVA DIT.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

	
	

H.P.	kVA

5.0	7.5
	7.5	
11.0
	10.0	
14.0
	15.0	
20.0
	20.0	
27.0
	25.0	
34.0
	30.0	
40.0
	40.0	
51.0
	50.0	
63.0
	60.0	
75.0
	75.0	
93.0
	100.0	
118.0
	125.0	
145.0
	150.0	
175.0
	200.0	
220.0
	250.0	
275.0
	300.0	
330.0
	400.0	
440.0	
	500.0	
550.0
	600.0	
660.0

SECTION

4

DRIVE ISOLATION TRANSFORMERS

Acme Advantages
Wound Cores and Strip
Winding mean lower losses

All Acme DITs above 7.5 kVA are wound with strip windings
to ensure the lowest possible eddy current losses. All our
DITs use a three leg wound core. This superior design has
very low losses and quiet operation. Both of these features
combine to significantly reduce losses and operating costs
compared to other types of constructions.

Copper terminations provide troublefree operation
All Acme DITs up to and including 220 kVA have copper
terminations. The transition from aluminum strip coil
conductors to copper terminations is accomplished by a
bonding process known as “Koldwelding™.” This process
has been used by Acme for over 25 years to provide a
trouble-free, permanent bonding of the two metals.

Wound core construction showing all copper terminations

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

45

SECTION

4

DRIVE ISOLATION TRANSFORMERS

SELECTION CHARTS	
		

GROUP A	
Primary 460V Delta	
Secondary 230Y/133	

 		
	 kVA	

GROUP B
Primary 460V Delta		
Secondary 460Y/266		

APPROX. DIMENSIONS ③ 		
Inches (Cm.)		

APPROX.	
TYPE MTG.	 Weather
SHIP WEIGHT	 W - Wall	
Shield	
DIM.
F - Floor	
P/N	
Drawing
DEPTH	Lbs. (Kg.)	

		
	7.5	

CATALOG NO.	
DTGA72S	

CATALOG NO.	
DTGB72S	

HEIGHT	
15.21 (38.6)	

WIDTH	
19.25 (48.9)	

7.37 (18.7)	

180 (81.6)	

	11.0	

DTGA0112S	

DTGB0112S	

18.86 (47.9)	

20.30 (51.6)	

9.03 (22.9)	

265 (120.0)	

	14.0	

DTGA0142S	

DTGB0142S	

18.86 (47.9)	

20.30 (51.6)	

9.03 (22.9)	

270 (123.0)	

F ①	 NA	I

	20.0	

DTGA0202S	

DTGB0202S	

20.77 (52.8)	

20.94 (53.2)	

10.18 (25.9)	

435 (197.0)	

F ①	 NA	I

	27.0	

DTGA0274S

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

320 (145.0)	

F ②	 WSA1	E

	34.0	

DTGA0344S	

DTGB0344S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

340 (154.0)	

F ②	 WSA1	E

	40.0	

DTGA0404S	

DTGB0404S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

395 (179.0)	

F ②	 WSA1	E

	51.0	

DTGA0514S	

DTGB0514S	

29.90 (75.9)	

28.15 (71.5)	

22.37 (56.8)	

400 (181.0)	

F ②	 WSA2	E

	63.0	

DTGA0634S	

DTGB0634S	

29.90 (75.9)	

28.15 (71.5)	

22.37 (56.8)	

550 (250.0)	

F ②	 WSA2	E

	75.0	

DTGA0754S	

DTGB0754S	

29.90 (75.9)	

28.15 (71.5)	

22.37 (56.8)	

570 (259.0)	

F ②	 WSA2	E

	93.0	

DTGA0934S	

DTGB0934S	

35.90 (91.2)	

31.90 (81.0)	

26.88 (68.3)	

685 (311.0)	

F	

WSA3	

E

	118.0	

DTGA01184S	

DTGB01184S	

35.90 (91.2)	

31.90 (81.0)	

26.88 (68.3)	

765 (347.0)	

F	

WSA3	

E

(38)	

DTGB0274S

(35)	

NA	

F

	145.0	

DTGA01454S	

DTGB01454S	

41.52 (105.5)	

32.90 (83.6)	

29.88 (75.9)	

990 (449.0)	

F	

WSA4	

E

	175.0	

DTGA01754S	

DTGB01754S	

41.52 (105.5)	

32.90 (83.6)	

29.88 (75.9)	

1100 (499.0)	

F	

WSA4	

E

	220.0	

DTGA02204S	

DTGB02204S	

41.52 (105.5)	

32.90 (83.6)	

29.88 (75.9)	

1120 (508.0)	

F	

WSA4	

E

	275.0	

DTGA002754S	

DTGB002754S	

45.60 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

2090 (948.0)	

F	

WSA5	

E

	330.0	

DTGA03304S	

DTGB03304S	

45.60 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

2090 (948.0)	

F	

WSA5	

G

	440.0		

DTGB04404S	

57.84 (146.9)	

45.50 (115.6)	

41.49 (105.4)	

2295 (1043.2)	

F	

WSA7	

G

	550.0		

DTGB05504S	

57.84 (146.9)	

45.50 (115.6)	

41.49 (105.4)	

2580 (1172.7)	

F	

WSA7	

G

	660.0		

DTGB06604S	

62.84 (159.6)	

54.00 (137.2)	

41.49 (105.4)	

3700 (1678.3)	

F	

WSA6	

G

	

DTGB07704S 	

62.84 (159.6)	

54.00 (137.2)	

41.49 (105.4)	

4044 (1838.2)	

F	

WSA6	

G

DTGB008804S	

62.84 (159.6)	

54.00 (137.2)	

41.49 (105.4)	

4230 (1922.7)	

F	

WSA6	

G

	

DTGB9902S 	

62.84 (159.6)	

54.00 (137.2)	

41.49 (105.4)	

4285 (1947.7)	

F	

WSA6	

G	

	770.0	
	880.0		
	990.0	

		

GROUP C	

		
	 kVA	

Primary 575V Delta	
Secondary 230Y/133	

GROUP D
Primary 575V Delta		
Secondary 460Y/266		

APPROX. DIMENSIONS ③ 		
Inches (Cm.)		

APPROX.	
TYPE MTG.	 Weather
SHIP WEIGHT	 W - Wall	
Shield	
DIM.
F - Floor	
P/N	
Drawing
DEPTH	Lbs. (Kg.)	

		
	7.5	

CATALOG NO.	
DTHA72S	

CATALOG NO.	
DTHB72S	

HEIGHT	
15.21 (38.6)	

WIDTH	
19.25 (48.9)	

7.37 (18.7)	

180 (81.6)	

	11.0	

DTHA0112S	

DTHB0112S	

18.86 (47.9)	

20.30 (51.6)	

9.03 (22.9)	

265 (120.0)	

F ①	 NA	I

	14.0	

DTHA0142S	

DTHB0142S	

18.86 (47.9)	

20.30 (51.6)	

9.03 (22.9)	

270 (123.0)	

F ①	 NA	I

	20.0	

DTHA0202S	

DTHB0202S	

20.77 (52.8)	

20.94 (53.2)	

10.18 (25.9)	

435 (197.0)	

F ①	 NA	I

	27.0	

DTHA0274S

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

320 (145.0)	

F ②	 WSA1	E

	34.0	

DTHA0344S	

DTHB0344S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

340 (154.0)	

F ②	 WSA1	E

	40.0	

DTHA0404S	

DTHB0404S	

25.50 (64.8)	

24.39 (61.9)	

19.37 (49.2)	

395 (179.0)	

F ②	 WSA1	E

	51.0	

DTHA0514S	

DTHB0514S	

29.90 (75.9)	

28.15 (71.5)	

22.37 (56.8)	

400 (181.0)	

F ②	 WSA2	E

	63.0	

DTHA0634S	

DTHB0634S	

29.90 (75.9)	

28.15 (71.5)	

22.37 (56.8)	

550 (250.0)	

F ②	 WSA2	E

	75.0	

DTHA0754S	

DTHB754S	

29.90 (75.9)	

28.15 (71.5)	

22.37 (56.8)	

570 (259.0)	

F ②	 WSA2	E

(41)	DTHB0274S (44)	

W	

NA	

F

	93.0	

DTHA0934S	

DTHB0934S	

35.90 (91.2)	

31.90 (81.0)	

26.88 (68.3)	

685 (311.0)	

F	

WSA3	

E

	118.0	

DTHA01184S	

DTHB01184S	

35.90 (91.2)	

31.90 (81.0)	

26.88 (68.3)	

765 (347.0)	

F	

WSA3	

E

	145.0	

DTHA01454S	

	175.0		

DTHB01454S	

41.52 (105.5)	

32.90 (83.6)	

29.88 (75.9)	

990 (449.0)	

F	

WSA4	

E

DTHB01754S	

41.52 (105.5)	

32.90 (83.6)	

29.88 (75.9)	

1100 (499.0)	

F	

WSA4	

E

	220.0		

DTHB02204S	

41.52 (105.5)	

32.90 (83.6)	

29.88 (75.9)	

1120 (508.0)	

F	

WSA4	

E

	275.0		

DTHB002754S	

45.60 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

2090 (948.0)	

F	

WSA5	

E

	330.0	

	

	440.0	

DTHB03304S 	

45.60 (115.8)	

39.50 (100.3)	

35.50 (90.2)	

2090 (948.0)	

F	

WSA5	

G

	DTHB04404S 	

57.84 (157.5)	

45.50 (115.6)	

41.49 (105.4)	

2580 (1172.7)	

F	

WSA7	

G

	550.0		

DTHB05504S	

57.84 (157.5)	

45.50 (115.6)	

41.49 (105.4)	

2640 (1200.0)	

F	

WSA7	

G

	660.0		

DTHB006604S	

62.84 (159.6)	

54.00 (137.2)	

41.49 (105.4)	

3700 (1678.3)	

F	

WSA6	

G

① 	Optional wall mounting kits – part # PL 79911 refer to Page 133.
② 	Optional wall mounting kits – part # PL 79912 refer to Page 133.

③ 	Dimensions may change and are not to be used for detailed construction purposes.
	 Please contact the factory for certified dimensional drawings.

The number in ( )’s following the catalog number is the electrical wiring diagram number beginning on page 122.
46

W	

F ①	 NA	I

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION
SECTION
	 GROUP E
		
	kVA	
		
	

4

DRIVE ISOLATION TRANSFORMERS

PRIMARY 230 Delta		
APPROX. DIMENSIONS		
APPROX.	
SECONDARY 230Y/133		
Inches (Cm.)		
SHIP WEIGHT	
CATALOG NO.	
Height	Width	 Depth	Lbs. (Kg.)	

7.5	

TYPE MTG.		
W – Wall	
Knockouts	
F – Floor	
Inches (Cm.)	
W	

Weather	
Shield	DIM.
P/N	
Drawing

DTFA72S (62)	

15.21 (38.6)	

19.25 (48.9)	

7.37 (18.7)	

180 (81.6)	

	 11.0	

DTFA0112S (62) 	

18.86 (48.0)	

20.30 (51.6)	

9.03 (22.9)	

265 (120.0)	

F ①	

NA	

NA	 NA	I

NA	

F

	 14.0	

DTFA0142S	

18.86 (48.0)	

20.30 (51.6)	

9.03 (22.9)	

265 (120.0)	

F ①	

NA	 NA	I

	 20.0	

DTFA0202S 	

20.77 (52.8)	

20.94 (53.2)	

10.18 (25.9)	

435 (197.0)	

	 27.0	

DTFA0274S (59)	

25.48 (64.8)	

24.39 (62.0)	

19.40 (49.3)	

302 (137.0)	

F ①	
F ②	

NA	 WSA1	E

NA	 NA	I

	 34.0	

DTFA0344S	

25.48 (64.8)	

24.39 (62.0)	

19.40 (49.3)	

330 (150.0)	

F ②	

NA	 WSA1	E

	 40.0	

DTFA0404S	

25.48 (64.8)	

24.39 (62.0)	

19.40 (49.3)	

370 (168.0)	

F ②	

NA	 WSA1	E

	 51.0	

DTFA0514S	

29.40 (74.7)	

28.15 (71.5)	

22.40 (56.9)	

375 (170.0)	

F ②	

NA	 WSA2	E

	 63.0	

DTFA0634S	

29.40 (74.7)	

28.15 (71.5)	

22.40 (56.9)	

495 (225.0)	

F ②	

NA	 WSA2	E

	 75.0	

DTFA0754S	

29.40 (74.7)	

28.15 (71.5)	

22.40 (56.9)	

525 (238.0)	

F ②	

NA	 WSA2	E

	 93.0	

DTFA0934S	

35.40 (89.9)	

31.90 (81.0)	

26.90 (68.3)	

685 (311.0)	

F	

NA	

WSA3	

E

	118.0	

DTFA01184S	

35.40 (89.9)	

31.90 (81.0)	

26.90 (68.3)	

710 (322.0)	

F	

NA	

WSA3	

E

	145.0	

DTFA01454S	

41.52 (105.5)	

32.90 (83.6)	

29.90 (75.9)	

980 (445.0)	

F	

NA	

WSA4	

E

	175.0	

DTFA01754S	

41.52 (105.5)	

32.90 (83.6)	

29.90 (75.9)	

1110 (504.0)	

F	

NA	

WSA4	

E

	220.0	

DTFA02204S	

41.52 (105.5)	

32.90 (83.6)	

29.90 (75.9)	

1120 (508.0)	

F	

NA	

WSA4	

E

① 	Optional wall mounting kits – part # PL 79911 refer to Page 133.
② 	Optional wall mounting kits – part # PL 79912 refer to Page 133.
The number in ( )’s following the catalog number is the electrical wiring diagram number beginning on page 155.

DRIVE ISOLATION DESIGN FIGURES (Refer to pg 122)

Windings, Terminations and Construction
		Primary	
Secondary	
Insulation			Construction
	kVA	
Winding	
Winding	
System	
Termination	
Enclosure		

Core	

	

7.5	

CU wire	

CU wire	

180°C	

CU wire	

Epoxy encapsulated		

	

11-20	

AL foil	

AL foil	

180°C	

CU wire	

Epoxy encapsulated		

Wound/distributed gap

	 27-220	

AL foil	

AL foil	

220°C	

CU bus	

Ventilated		

Wound/distributed gap

	 275-660	

AL foil	

AL foil	

220°C	

AL bus	

Ventilated		

Butt stacked/Step lap

Wound/distributed gap

Figure 1

Thermal Switch Kit - PL-79900
Acme Thermal Switch Kits are designed for use with single and three phase
drive isolation and distribution transformers. Thermal switch kits are available
for a one or three sensor system.
Thermal sensors can be field installed in the transformer winding ducts to detect
abnormal temperatures. The thermal sensors are a normally closed contact
that opens at 200°C ± 10°C and has a current capacity of 5 amps @ 120V or
2.5 amps @ 240V. This contact can activate any number of different types of
alarms or mechanisms that could warn of a potential failure.
	

kVA	

	 27.0-118.0	
	 145-750	

Mounting Position	

Illustration

Bottom of the case	

Figure 1

Top flange of the core bracket	

Figure 2

COIL 1

COIL 2

COIL 3

CORE
BOTTOM OF CASE

Figure 2
TERMINAL BLOCK
EPOXY LAYER

For Information On The Following,
Please Contact The Factory
1.	Transformers rated primary 230 volts delta, secondary 460Y/266 volts.
2.	Low temperature rise units using class 220°C insulation with
	either 115°C or 80°C rise operating temperature.
3. Totally enclosed non-ventilated units.

.625 (1.6 cm) H DIA.
EPOXY-RING

THERMAL SWITCH
.5H
(1.3 cm)
H

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

COIL 1

COIL 2

COIL 3

CORE
47

SECTION
SECTION

4

AC LINE REACTORS

AC Line Reactors
FEATURES
n	 Gapped iron core inductor–designed for optimum
	 performance while providing harmonics compensation.

	Precision wound copper coils–maximum protection from
short-circuiting.
n	
Finger-safe terminal blocks (up to 60 HP).
n

	Compact design–allows for more flexible installation.

n

	Amperage ratings of 2 to 600 amps

n

	 Available in 3% and 5% impedance

n

	 Can be used with 208, 240, 480 and 600 volts.

n

	Covered under Acme’s 10-year limited warranty.

n

	UR and cUR Recognized.

n

Protect your sensitive equipment from harmful line disturbances
with Acme AC Line Reactors. AC Line Reactors help
prevent equipment failure and downtime, and can add
years to the life of your equipment.
Designed to protect DC motor drives, AC variable frequency
drives and the motors they power. AC Line Reactors allow
Acme to augment the Drive Isolation Transformer package
to offer both line and load power quality protection for a
wide range of applications.
Our product line features flexible design and ease of
installation for use in a variety of applications such as paper
machines, process lines, press controls and drive systems,
along with tube mills and other sophisticated process
equipment. These applications are found in such industries as
food and beverage, paper, packaging systems and printing.

	CE Marked (up to 55 amps)

n

BENEFITS
Protect your motors and motor drives from a variety of power
conditioning problems while realizing the following benefits:
	 Protection from damaging voltage drop.

n

	Elimination of nuisance tripping of drives or circuit
breakers.

n

	Reduction of motor current surges and power line spike
currents.

n

	Improvement in true power factor of capacitor input drives.

n

	Cooler, quieter operation.

n

	Reduction of harmonic distortion.

n

	Longer life for motors and solid state components.

n

AC LINE REACTORS DIMENSIONAL DRAWINGS
1-60 HP; 2-80 Amp

48

75-500 HP; 110-600 Amp

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION
SECTION

4

AC LINE REACTORS

Applying Acme AC Line Reactors
Acme’s three-phase AC Line Reactors can be used as an input filter for adjustable speed DC drives and as input
or output filters for AC pulse width modulated variable frequency drives. They are bi-directional protective filtering
devices and can be applied in a variety of configurations.

Input to Inverter/Drive
AC Line Reactors protect your sensitive equipment from noise
generated by the drive or inverter. They protect the controller from
power surges, spikes and harmonic distortion.

Output of Inverter/Drive
Motors run cooler and quieter with an AC Line Reactor placed
between the inverter and motor. This application also reduces
dv/dt and protects the controller from short circuits and surges.

Multiple Controllers on a Single Power Line
Each drive or inverter on a single power line requires its own AC
Line Reactor in order to provide adequate surge protection, prevent
crosstalk and reduce harmonic distortion.

Multiple Motors Controlled by a Single Drive
Multiple motors controlled by a single drive require only one AC Line
Reactor between the controller and motors.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

49

SECTION
SECTION

4

AC LINE REACTORS

SELECTION CHARTS	
	 GROUP B

®

480 VOLTS, 3% Z, 60 Hz (600 VOLTS, 2.4% Z; 240 VOLTS, 6% Z)
			MOTOR *	
	 CATALOG NO.	
HP	
AMP	

REACTOR			
AMP	
uH	
H	

DIMENSIONS		
W	
D	

MOUNTING DIMENSIONS	
A (Depth)	
B (Width)	

WEIGHT
(Lbs/Kg)

	 ALRB002TBC	

1	

2.1	

2	

11027	

3.875 (9.8)	

4.25 (10.8)	

3.125 (7.90)	

2.00 (5.1)	

1.44 (3.7)	

3 (1.4)

	 ALRB003TBC	

1.5	

3	

3	

7351	

3.875 (9.8)	

4.25 (10.8)	

3.125 (7.90)	

2.00 (5.1)	

1.44 (3.7)	

3 (1.4)

	 ALRB004TBC	

2	

3.4	

4	

5513	

3.875 (9.8)	

4.25 (10.8)	

3.125 (7.90)	

2.00 (5.1)	

1.44 (3.7)	

3 (1.4)

	 ALRB006TBC	

3	

4.8	

6	

3676	

3.875 (9.8)	

4.25 (10.8)	

3.125 (7.90)	

2.00 (5.1)	

1.44 (3.7)	

3 (1.4)

	 ALRB008TBC	

5	

7.6	

8	

2757	

4.75 (12.1)	

6.50 (16.5)	

3.75 (9.50)	

2.10 (5.3)	

2.00 (5.1)	

5 (2.3)

	 ALRB012TBC	

7.5	

11	

12	

1838	

4.75 (12.1)	

6.50 (16.5)	

3.75 (9.50)	

2.10 (5.3)	

2.00 (5.1)	

6 (2.7)

	 ALRB016TBC	

10	

14	

16	

1378	

4.75 (12.1)	

6.50 (16.5)	

3.75 (9.50)	

2.30 (5.8)	

2.00 (5.1)	

6 (2.7)

	 ALRB025TBC	

15	

21	

25	

882	

4.75 (12.1)	

6.50 (16.5)	

4.00 (10.2)	

2.60 (6.6)	

2.50 (6.4)	

9 (4.1)

	 ALRB027TBC	

20	

27	

27	

817	

4.75 (12.1)	

6.50 (16.5)	

4.00 (10.2)	

2.60 (6.6)	

2.50 (6.4)	

9 (4.1)

	 ALRB035TBC	

25	

34	

35	

630	

4.75 (12.1)	

6.50 (16.5)	

4.50 (11.4)	

3.20 (8.1)	

2.50 (6.4)	

13 (5.9)

	 ALRB045TBC	

30	

40	

45	

490	

4.75 (12.1)	

6.50 (16.5)	

4.50 (11.4)	

3.20 (8.1)	

3.00 (7.6)	

14 (6.4)

	 ALRB055TBC	

40	

52	

55	

401	

7.00 (17.8)	

9.00 (22.9)	

4.50 (11.4)	

3.50 (8.9)	

3.60 (9.1)	

22 (10.0)
23 (10.4)

	 ALRB080TBC	

60	

77	

80	

276	

7.00 (17.8)	

9.00 (22.9)	

4.75 (12.1)	

3.60 (9.1)	

3.60 (9.1)	

	 ALRB110CBC	

75	

96	

110	

200	

7.00 (17.8)	

9.00 (22.9)	

5.50 (14.0)	

3.60 (9.1)	

3.60 (9.1)	

27 (12.2)

	 ALRB130CBC	

100	

124	

130	

170	

7.00 (17.8)	

9.00 (22.9)	

6.50 (16.5)	

3.50 (8.9)	

3.60 (9.1)	

34 (15.4)

	 ALRB160CBC	

125	

156	

160	

138	

7.00 (17.8)	

9.00 (22.9)	

6.50 (16.5)	

4.20 (10.7)	

3.60 (9.1)	

36 (16.3)

	 ALRB200CBC	

150	

180	

200	

110	

7.00 (17.8)	

9.00 (22.9)	

8.00 (20.3)	

4.20 (10.7)	

3.60 (9.1)	

55 (24.9)

	 ALRB250CBC	

200	

240	

250	

88	

8.50 (21.6)	

10.80 (27.4)	

8.00 (20.3)	

5.70 (14.5)	

4.60 (11.7)	

74 (33.6)

	 ALRB300CBC	

250	

302	

300	

74	

8.50 (21.6)	

10.80 (27.4)	

8.00 (20.3)	

5.20 (13.2)	

4.60 (11.7)	

85 (38.6)

	 ALRB360CBC	

300	

361	

360	

61	

8.50 (21.6)	

10.80 (27.4)	

8.00 (20.3)	

6.20 (15.2)	

4.60 (11.7)	

105 (47.6)

	 ALRB420CBC	

350	

414	

420	

53	

8.50 (21.6)	

10.80 (27.4)	

8.50 (21.6)	

6.20 (15.2)	

4.60 (11.7)	

113 (51.3)

	 ALRB480CBC	

400	

477	

480	

46	

8.50 (21.6)	

10.80 (27.4)	

8.50 (21.6)	

6.70 (17.0)	

4.60 (11.7)	

119 (54.0)

MOUNTING DIMENSIONS	
A (Depth)	
B (Width)	

WEIGHT
(Lbs/Kg)

	 GROUP C
480 VOLTS, 5% Z, 60 Hz (600 VOLTS, 4% Z; 240 VOLTS, 10% Z )
			MOTOR *	
	 CATALOG NO.	
HP	
AMP	

REACTOR			
AMP	
uH	
H	

DIMENSIONS		
W	
D	

	 ALRC002TBC	

1	

2.1	

2	

18378	

3.875 (9.8)	

4.25 (10.8)	

3.125 (7.9)	

2.00 (5.1)	

1.44 (3.7)	

3 (1.4)

	 ALRC003TBC	

1.5	

3	

3	

12252	

3.875 (9.8)	

4.25 (10.8)	

3.125 (7.9)	

2.00 (5.1)	

1.44 (3.7)	

3 (1.4)

	 ALRC004TBC	

2	

3.4	

4	

9189	

3.875 (9.8)	

4.25 (10.8)	

3.125 (7.9)	

2.10 (5.3)	

1.44 (3.7)	

4 (1.8)

	 ALRC006TBC	

3	

4.8	

6	

6126	

4.75 (12.1)	

6.50 (16.5)	

3.75 (9.5)	

2.10 (5.3)	

2.00 (5.1)	

5 (2.3)

	 ALRC008TBC	

5	

7.6	

8	

4594	

4.75 (12.1)	

6.50 (16.5)	

3.75 (9.5)	

2.10 (5.3)	

2.00 (5.1)	

6 (2.7)

	 ALRC012TBC	

7.5	

11	

12	

3063	

4.75 (12.1)	

6.50 (16.5)	

3.75 (9.5)	

2.20 (5.6)	

2.00 (5.1)	

7 (3.2)

	 ALRC016TBC	

10	

14	

16	

2297	

4.75 (12.1)	

6.50 (16.5)	

4.00 (10.2)	

2.60 (6.6)	

2.00 (5.1)	

9 (4.1)

	 ALRC025TBC	

15	

21	

25	

1470	

4.75 (12.1)	

6.50 (16.5)	

4.50 (11.4)	

3.00 (7.6)	

2.00 (5.1)	

13 (5.9)

	 ALRC027TBC	

20	

27	

27	

1361	

4.75 (12.1)	

6.50 (16.5)	

4.50 (11.4)	

2.80 (7.1)	

3.00 (7.6)	

13 (5.9)

	 ALRC035TBC	

25	

34	

35	

1050	

7.00 (17.8)	

9.00 (22.9)	

4.75 (12.1)	

3.60 (9.1)	

3.00 (7.6)	

23 (10.4)

	 ALRC045TBC	

30	

40	

45	

817	

7.00 (17.8)	

9.00 (22.9)	

4.75 (12.1)	

3.60 (9.1)	

3.00 (7.6)	

23 (10.4)

	 ALRC055TBC	

40	

52	

55	

668	

7.00 (17.8)	

9.00 (22.9)	

4.75 (12.1)	

3.60 (9.1)	

3.00 (7.6)	

24 (10.9)

	 ALRC080TBC	

60	

77	

80	

459	

7.00 (17.8)	

9.00 (22.9)	

5.75 (14.6)	

4.60 (11.7)	

3.60 (9.1)	

34 (15.4)

	 ALRC110CBC	

75	

96	

110	

334	

7.00 (17.8)	

9.00 (22.9)	

6.50 (16.5)	

4.20 (10.7)	

3.60 (9.1)	

56 (25.4)

	 ALRC130CBC	

100	

124	

130	

283	

7.00 (17.8)	

9.00 (22.9)	

6.50 (16.5)	

4.20 (10.7)	

3.60 (9.1)	

56 (25.4)

	 ALRC160CBC	

125	

156	

160	

230	

7.00 (17.8)	

9.00 (22.9)	

8.00 (20.3)	

4.20 (10.7)	

3.60 (9.1)	

70 (31.8)

	 ALRC200CBC	

150	

180	

200	

184	

8.50 (21.6)	

10.80 (27.4)	

8.25 (21.0)	

5.90 (15.0)	

3.60 (9.1)	

76 (34.5)

	 ALRC250CBC	

200	

240	

250	

147	

8.50 (21.6)	

10.80 (27.4)	

8.25 (21.0)	

6.20 (15.7)	

4.60 (11.7)	

89 (40.4)

	 ALRC300CBC	

250	

302	

300	

123	

10.93 (27.8)	

16.50 (41.9)	

8.13 (20.7)	

6.20 (15.7)	

4.60 (11.7)	

106 (48.1)
124 (56.2)

	 ALRC360CBC	

300	

361	

360	

102	

10.93 (27.8)	

16.50 (41.9)	

9.50 (24.1)	

8.20 (20.8)	

4.60 (11.7)	

	 ALRC420CBC	

350	

414	

420	

88	

10.93 (27.8)	

16.50 (41.9)	

9.50 (24.1)	

8.20 (20.8)	

4.60 (11.7)	

124 (56.2)

	 ALRC480CBC	

400	

477	

480	

77	

10.93 (27.8)	

16.50 (41.9)	 10.13 (25.7)	

8.20 (20.8)	

4.60 (11.7)	

129 (58.5)

	 ALRC600CBC	

500	

590	

600	

61	

10.93 (27.8)	

16.50 (41.9)	 10.13 (25.7)	

8.20 (20.8)	

7.20 (18.3)	

190 (86.2)

* Motor HP and Amp rated at 480 volts.
50

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

INDUSTRIAL
CONTROL
TRANSFORMERS
Industrial Control Transformers provide
a low and safe control voltage for the
operation of electromagnetic devices, such
as motor starters, contactors, solenoids
and timers ... or other loads requiring
above average voltage regulation when
actuated.
Selection Steps ......................................................52
TA Series Open Core & Coil ...........................53-55
Primary & Secondary Fuse Information .............54-55
Selection Charts ................................................59-64
Wiring Diagrams & Dimensions ..............................65
TB Series Open Core & Coil ...........................56-58
Primary & Secondary Fuse Information ..................57
Selection Charts ................................................59-64
Wiring Diagrams & Dimensions ..............................66
Harsh Environments Control Transformers .......67
AE/CE Series Encapsulated Transformers ..... 68-75
Selection Charts .................................................70-73
FINGER/GUARD®
Industrial Control Transformer ...........................76-79
Selection Charts ......................................................77

5

SECTION

5

INDUSTRIAL CONTROL TRANSFORMERS

Selecting Industrial Control Transformers
To make the proper transformer selection,
the load must be completely analyzed...
which involves every electrically energized
component in the control circuit.
All electromagnetic control devices have
two current requirements; the first to
energize the coil; the second to maintain
the contact for a definite period of time.
The initial energizing of the coil, which
takes 5 to 20 milliseconds, requires many
times more current than normal. This is
referred to as volt-ampere inrush... which
is immediately followed by the sealed voltamperes—the amount of current required
to hold the contact in the circuit.

Easy, five step selection

1. Determine the voltage and frequency
of supply circuit: Example: 460 Volts,
60 Hz.
2. Determine the total inrush VA of the
control circuits from the manufacturer’s
data or the contactor data table. Do not
neglect the current requirements of
indicating lights and timing devices
that do not have an inrush VA but are
energized at the same time as the
other components in the circuit. Their
total VA should be added to the total
inrush VA.
3. Refer to the regulation data chart.
If the supply circuit voltage (Step 1)
is reasonably stable and fluctuates
no more than ± 5%, refer to the
90% Secondary Voltage column. If
it fluctuates as much as ± 10%, refer to
the 95% Secondary Voltage column.
Go down the column you have selected
until you arrive at the inrush VA closest
to, but not less than, the inrush VA of
your control circuit.
4. Read to the far left side of the chart
and you have selected the continuous
nominal VA rating of the transformer
needed. The secondary voltage that
will be delivered under inrush conditions
will be either 85%, 90%, or 95% of the
rated secondary voltage—depending
on the column selected from the
regulation data chart. The total sealed
VA of the control circuit must not exceed
the nominal VA rating of the transformer
selected from the manufacturer’s data
or the contactor’s data table.
52

TABLE 1. Inrush VA
Inrush VA @ 20% & 40% Power Factor
85% Secondary Voltage
90% Secondary Voltage
95% Secondary Voltage

Nominal
VA Rating

20% P.F.

40% P.F.

20% P.F.

40% P.F.

20% P.F.

40% P.F.

50
75
100
150
250
300
350
500
750
1000
1500
2000

362
579
839
1326
3447
3894
5418
6496
8377
11329
25519
28178

224
354
522
842
2281
2618
3689
4575
5811
9005
18803
21600

289
462
664
1003
2462
2812
3870
4691
5913
7789
18013
19372

179
283
413
637
1629
1890
2635
3304
4102
6191
13273
14850

217
345
489
679
1477
1731
2322
2887
3449
4248
10508
10566

134
211
304
431
977
1163
1581
2033
2393
3377
7742
8100

3000
5000

34797
138500

28391
84542

24562
100000

20041
61058

14328
61550

11690
37574

TABLE 2. Typical Magnetic Motor Starter & Contactor Data
60 Hz, 120 Volt, 3-Pole
N.E.M.A. Size
Contactor

Allen
Bradley

500 Series
K Series

ASEA

Heavy
Duty Series

Furnas
General Electric
Joslyn Clark
Siemens-Allis
(formerly ITE Gould)
Square D
Westinghouse
Cutler
Hammer
(Citation
Line)

A1 Series
B1 Series

00

0

1

2

3

4

5

—

192

192

240

660

1225

A
2040

L
1490

—

29

29

29

45

69

110

96

53

110

175

240

580

1000

15

20

22

31

43

85

85

100

150

490

9

9

11.5

15

35

218

218

218

218

310

VA Inrush
VA Sealed

1950

VA Inrush

65

98

VA Sealed

900

1200

VA Inrush

55

65

VA Sealed

957

1518

VA Inrush

25

25

25

25

26

75

116

VA Sealed

151

151

151

528

1152

1248

2580

VA Inrush

24

24

24

60

83

86

191

VA Sealed

210

210

210

210

724

880

1790

VA Inrush

18

18

18

18

30

39

295

VA Sealed

76

76

76

194

365

530

1630

VA Inrush

12

12

12

21

35

40

110

VA Sealed

165

245

245

311

700

1185

2970

VA Inrush

33

27

27

37

46

85

212

VA Sealed

160

160

160

160

625

625

1700

VA Inrush

25

25

25

25

50

50

180

VA Sealed

87

103

103

—

—

—

1158

VA Inrush

15

20

20

—

—

—

100

VA Sealed

102

103

103

140

390

1158

1158

VA Inrush

13

20

20

24

50

100

100

VA Sealed

5. Refer to the specification tables on the following pages to select a transformer
according to the required continuous nominal VA and primary/secondary voltages.

Data is most current at time of printing. Contact individual manufacturer for updates.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

5

TA SERIES OPEN CORE & COIL INDUSTRIAL CONTROL TRANSFORMERS

TA Series Open Core & Coil
Industrial Control Transformers
Industrial control transformers are used to reduce
supply voltages to 230 V or lower for the operation
of electromagnetic devices such as contactors,
solenoids, relays, and timers. They are especially
designed to accommodate the momentary current
inrush caused when electromagnetic components
are energized... without sacrificing secondary
voltage stability beyond practical limits.
Acme Industrial Control Transformers are
dry-type, step -down transformers with the
secondary control circuit isolated from the primary
line circuit to assure maximum safety.

Primary Fuse Kit with Snap-on
Secondary Fuse Block

Jumper Link Connections

Secondary Fuse Clips

Integrally Mounted Fuse Blocks

Voltage regulation of Acme Industrial Control
Transformers exceeds standards recommended
by the National Electrical Manufacturers
Association. Secondary circuit voltage drop
between no-load and momentary overload
remains exceptionally low. This excellent
secondary circuit voltage regulation assures
reliable operation of electromagnetic
components and may permit the use of a smaller
and less expensive industrial control transformer.

FEATURES
Constructed with high quality silicon steel
lamination to minimize core losses and
increase efficiency.
Designs incorporate precision wound coils for
improved regulation.
Primary fuse blocks and secondary fuse kits
available and easily adaptable.
Series-parallel connecting links save wiring and
labor costs.
Sturdy phenolic terminal panel protects the coil
from foreign objects and mechanical damage.

Acme Industrial Control Transformers Meet
or Exceed UL, CSA, NEMA & ANSI
Acme Industrial Control Transformers 50 through 5000 VA are UL
Listed, File E79947 and CSA certified, File 7357.

Laminations—High-permeability silicon steel continuously
annealed to minimize core losses.

Magnet Wire—Copper magnet wire is coated with high
temperature-resisting insulating film.
Coils—Precision wound by machine; total turns per coil

Copper windings on all groups.

automatically counted.

130°C Insulation class. 80°C temperature rise.

Mounting—Heavy steel mounting plates add strength to core construction and provide firm mounting, slotted to facilitate installation.

Wire retention on both primary and secondary
terminals.
Mounting plate adapts to various mounting
dimensions.
Voltage regulation exceeds NEMA requirements.
UL Listed, CSA Certified.
Attractive finish, nameplate, and design features
enhance the end product.

Terminal Boards—Sturdy phenolic terminal boards.
Sizing Primary Fuses:
Primary Amps < 2, fuse size is 300% of rated primary current.
Primary Amps 2< 9, fuse size is 167% of rated primary current.
Primary Amps > 9, fuse size is 125% of rated primary current.

Sizing Secondary Fuses:
Secondary Amps < 9, fuse size is 167% of rated secondary current.
Secondary Amps > 9, fuse size is 125% of rated secondary current.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

53

SECTION
SECTION

5

TA SERIES OPEN CORE & COIL INDUSTRIAL CONTROL TRANSFORMERS

TA Series Primary Fuse Kits
Type PL112700 Through PL112705:
Using 2 Class CC Dual Element Fuses (not supplied)
Meets NEC Article 450 and UL-508 requirements.
For use with class “CC” fuses.
Eliminates remote mounting of primary overcurrent protection.
Covered by Acme Electric 10-year limited warranty.

INPUT
SUPPLY
LINE

Field installation is fast and easy. Simply loosen the mounting
hardware (Fig. 1), slide the bracket over the transformer and
re-tighten the mounting hardware. Make the proper connections
with the factory furnished jumpers (Fig. 2) and your unit is ready
for operation.

PR

IM

Y(
AR

HS

IDE

PR

IM

Y(
AR

HS

IDE

)

)

SE

N
CO

DA

(
RY

XS

IDE

)

Figure 2

Figure 1

Instructions for TA Series Primary Fuse Kit
Type PL112706 & PL112707: Using 2 Class CC Dual Element Fuses (3000-5000 VA)
1. To mount the primary fuse kit bracket, remove the two 1/4"
(.64 cm) sheet metal screws on the terminal panel on the
primary (H side) of the transformer.

4. Attach the female quick connect of the jumpers supplied
with the fuse kit to male quick connects on the right side
of the fuse blocks —one jumper to each of the blocks.

2. Place the slots in the fuse kit mounting bracket over the
holes in the terminal and mounting bracket. To secure the
fuse kit, reinsert the two 1/4" (.64 cm) sheet metal screws
and tighten securely.

5. Connect the ring terminal of the jumpers to the appropriate
screw terminals of the transformers primary (H side). Refer to
the transformer name plate for proper terminal connections.
6. Connect primary supply line leads to the screw terminals
on the left side of the block —one line lead to each of the
fuse blocks.

3. Tighten all mounting screws securely–this will secure the
mounting bracket.

PR

IM

Y (H
AR

SID

E)

SE

CO

ND

Y (X
AR

SID

PR

E)

IM

Y (H
AR

SID

C
SE

O

E)

A
ND

(X
RY

SID

E)

INPUT
SUPPLY
LINE

Primary Fuse Sizing Chart
VA
50
75
100
150
250
300
350
500
750
1000
1500
2000
3000
5000

120 V
1.2
1.9
2.5
3.8
3.5
4.0
5.0
7.0
10.0
15.0
20.0
25.0
30.0
––

208 V
0.6
1.0
1.5
2.0
3.5
4.0
5.0
4.0
6.0
8.0
12.0
12.0
20.0
30.0

230 V
0.6
1.0
1.3
2.0
3.5
4.0
4.5
3.5
5.5
7.0
12.0
15.0
20.0
30.0

240 V
0.6
1.0
1.3
1.9
3.0
3.5
4.0
3.5
5.0
7.0
12.0
15.0
20.0
30.0

277 V
0.6
0.8
1.0
1.5
3.0
3.0
4.0
5.5
4.5
6.0
10.0
12.0
15.0
25.0

380 V
0.3
0.6
0.8
1.2
2.0
2.5
2.5
4.0
6.0
4.5
7.0
9.0
15.0
20.0

416 V
0.3
0.6
0.8
1.2
1.8
2.5
2.5
3.5
5.5
4.0
6.0
8.0
12.0
15.0

440 V
0.3
0.6
0.6
1.0
1.8
2.0
2.5
3.5
5.0
3.5
6.0
8.0
12.0
15.0

460 V
0.3
0.5
0.6
1.0
1.5
2.0
2.0
3.5
5.0
3.5
5.5
7.5
12.0
15.0

480 V
0.3
0.5
0.6
1.0
1.5
1.9
2.0
3.0
5.0
3.5
5.5
7.0
12.0
15.0

Fuse size based on time delay class CC fuses.
NOTE: Bold lines indicate changes in the percent of rated current used to calculate fuse sizes in accordance with article 450 of the NEC.
54

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

550 V
0.3
0.4
0.6
0.8
1.4
1.5
1.9
3.0
4.0
5.5
5.0
6.0
10.0
12.0

600 V
0.3
0.4
0.5
0.8
1.2
1.5
1.8
2.5
4.0
5.0
4.5
6.0
9.0
15.0

SECTION

5

TA SERIES OPEN CORE & COIL INDUSTRIAL CONTROL TRANSFORMERS

TA Series Secondary Fuse Kits
Type PL112600, 601, 602: Use Dual Element Slow-Blow Fuse
Mount secondary fuse clips on terminals
X1 and F or F1 using the screws supplied
with the transformer.

PL112600/601 Fuse Kit

PL112602 Fuse Kit

Connect secondary load lines to terminals
X2 and F or F2.
Use dual-element slow-blowing fuses
such as Bussmann MFG., Fusetron Type
FNM, Littelfuse or Shawmut (not supplied
with fuse kits).

TA Series Instructions for Secondary Fuse Kit
Type PL112603: use dual element slow-blow fuse 13/32" x 1-1/2" (1.0 x 3.8 cm)
1. To attach secondary fuse kit PL-112603 to primary fuse
kits PL112700 thru PL112707 snap the secondary single
pole fuse block onto the unlabeled side of the primary
double pole fuse block. (See Figure 1)
2. Install the fuse kits as instructed under the primary fuse kit
instructions on page 54.
3. Select the appropriate pair of jumpers for making the
connections between the secondary fuse block and the
secondary (X-side) of the transformer.

SE

CO

N

(
RY
DA

XS

IDE

)

4. Connect the female quick-connect of the jumpers
supplied to one of the male quick-connects of the
secondary fuse block - one jumper to each end of
the fuse block. (See Figure 2)

Figure 2

5. Connect the ring terminal of the jumpers supplied
to screw terminals X1 and F or F1 on the secondary
(X-side) of the transformer.
6. Connect secondary load lines to terminals
X2 and F or F2.

Figure 1

Jumper Link Connections
Group A Series: 240 V parallel: 120 V
Group B Series: 480 V parallel: 240 V
Group F series: 230 V parallel: 115 V
Group I Series: 24 V parallel: 12 V
Group J Series: 480 V & 240 V: 240 V & 120 V
Group K Series: 240 V: 120 V

Exception: 150 VA transformer TA232404 does not have
quick connect terminals.

Parallel
Connection
Series
Connection

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

55

SECTION

5

TA SERIES OPEN CORE & COIL INDUSTRIAL CONTROL TRANSFORMERS
TB

TB Series Open Core & Coil
Industrial Control Transformers
Acme’s TB Series Industrial Control Transformers are especially
designed to accommodate the momentary current inrush
caused when electromagnetic components are energized...
without sacrificing secondary voltage stability beyond
practical limits.
Acme’s TB Series transformers are dry-type, step-down
transformers with the secondary control circuit isolated from
the primary line circuit to assure maximum safety.
Voltage regulation of Acme’s TB Series transformers
exceeds standards recommended by the National Electrical
Manufacturers Association. Secondary circuit voltage
drop between no-load and momentary overload remains
exceptionally low. This excellent secondary circuit voltage
regulation assures reliable operation of electromagnetic
components and may permit the use of a smaller and less
expensive industrial control transformer.

FEATURES & BENEFITS
600 volt class and below.
50–1000 VA, 50/60 Hz.
80°C temperature rise, 130°C insulation class.
Constructed with high quality silicon steel lamination to
minimize core losses and increase efficiency.
Designs incorporate precision split bobbin wound coils
for improved regulation.
Primary fuse blocks and secondary fuse kits available and
easily adaptable.

APPLICATIONS
Motor Starters
Contactors
Solenoids
Timer Circuits

Series-parallel connecting links save wiring and labor costs.

Relays

Terminal blocks allow full access for ring terminals for easy
installation even with solid strand conductors.

Control Panels
Robotics

Integrally molded terminal blocks with isolation barriers to
prevent arc over.
Footprint matches TA Series for easy interchangeability.
Copper windings on all groups.
Heavy gauge steel mounting plate adapts to various
mounting dimensions.
Voltage regulation exceeds NEMA requirements.
UL Listed and CSA Certified.
Meets or exceeds UL, CSA, NEMA, ANSI and
OSHA Standards.
Ten-year limited warranty.

56

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

5

SECTION

TA SERIES OPEN CORE & COIL INDUSTRIAL CONTROL TRANSFORMERS
TB

TB Series Primary Fuse Kits
Type PL112700 Through PL112705:
Using 2 Class CC Dual Element Fuses (not supplied)
Meets NEC Article 450 and UL-508 requirements.
For use with class “CC” fuses.

Figure 1

Eliminates remote mounting of primary
overcurrent protection.
Covered by Acme Electric 10-year
limited warranty.
Field installation is fast and easy. Simply loosen
the mounting hardware (Fig. 1), slide the bracket
over the transformer and re-tighten the mounting
hardware. Make the proper connections with the
factory furnished jumpers (Fig. 2) and your unit is
ready for operation.

Figure 2

Fuse Kit adds approximately
1.75” to height of unit.

Primary Fuse Sizing Chart
VA
50

120 V
1.2

208 V
0.6

230 V
0.6

240 V
0.6

277 V
0.6

380 V
0.3

416 V
0.3

440 V
0.3

460 V
0.3

480 V
0.3

550 V
0.3

600 V
0.3

75

1.9

1.0

1.0

1.0

0.8

0.6

0.6

0.6

0.5

0.5

0.4

0.4

100

2.5

1.5

1.3

1.3

1.0

0.8

0.8

0.6

0.6

0.6

0.6

0.5

150

3.8

2.0

2.0

1.9

1.5

1.2

1.2

1.0

1.0

1.0

0.8

0.8

250

3.5

3.5

3.5

3.0

3.0

2.0

1.8

1.8

1.5

1.5

1.4

1.2

300

4.0

4.0

4.0

3.5

3.0

2.5

2.5

2.0

2.0

1.9

1.5

1.5

350

5.0

5.0

4.5

4.0

4.0

2.5

2.5

2.5

2.0

2.0

1.9

1.8

500

7.0

4.0

3.5

3.5

5.5

4.0

3.5

3.5

3.5

3.0

3.0

2.5

750

10.0

6.0

5.5

5.0

4.5

6.0

5.5

5.0

5.0

5.0

4.0

4.0

1000

15.0

8.0

7.0

7.0

6.0

4.5

4.0

3.5

3.5

3.5

5.5

5.0

1500

20.0

12.0

12.0

12.0

10.0

7.0

6.0

6.0

5.5

5.5

5.0

4.5

2000

25.0

12.0

15.0

15.0

12.0

9.0

8.0

8.0

7.5

7.0

6.0

6.0

3000

30.0

20.0

20.0

20.0

15.0

15.0

12.0

12.0

12.0

12.0

10.0

9.0

5000

––

30.0

30.0

30.0

25.0

20.0

15.0

15.0

15.0

15.0

12.0

15.0

Secondary Fuse Sizing Chart
VA
50 VA

24 V
3.2

85 V
0.9

91 V
0.9

99 V
0.8

100 V
0.8

110 V
0.7

115 V
0.7

120 V
0.6

125 V
0.6

130 V
0.6

75 VA

5.0

1.4

1.2

1.2

1.2

1.0

1.0

1.0

1.0

0.8

100 VA

6.0

1.5

1.5

1.5

1.5

1.5

1.5

1.2

1.2

1.2

150 VA

10.0

2.5

2.5

2.5

2.5

2.0

2.0

2.0

2.0

1.5

250 VA

12.0

4.5

4.5

4.0

4.0

3.5

3.5

3.0

3.0

3.0

300 VA

15.0

5.5

5.5

5.0

5.0

4.5

4.5

4.0

4.0

3.5

350 VA

20.0

6.5

6.0

5.5

5.5

5.0

5.0

4.5

4.5

4.5

500 VA

25.0

9.0

9.0

8.0

8.0

7.0

7.0

6.0

6.0

6.0

750 VA

40.0

12.0

12.0

12.0

12.0

10.0

10.0

10.0

10.0

9.0

1000 VA

50.0

15.0

15.0

12.0

12.0

12.0

12.0

12.0

12.0

12.0

1500 VA

—

25.0

20.0

20.0

20.0

20.0

20.0

15.0

15.0

15.0

2000 VA

—

30.0

30.0

25.0

25.0

25.0

25.0

20.0

20.0

20.0

3000 VA

—

40.0

40.0

40.0

40.0

35.0

35.0

30.0

30.0

30.0

5000 VA

—

70.0

70.0

60.0

60.0

60.0

60.0

50.0

50.0

50.0

Fuse size based on time delay class CC fuses.
NOTE: Bold lines indicate changes in the percent of rated current used to calculate fuse sizes in accordance with article 450 of the NEC.
ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

57

SECTION

5

TA SERIES OPEN CORE & COIL INDUSTRIAL CONTROL TRANSFORMERS
TB

TB Series Secondary Fuse Kits
Type PL79924, PL79930, & PL79931: Use Dual Element Slow-Blow Fuse
Catalog Number
PL79924*
PL79930
PL79931

VA
50-1000
50-350
500-1000

Type
1/4" x 1-1/4"
13/32" x 1-1/2"
13/32" x 1-1/2"

Secondary
Fuse Kit

Mount secondary fuse clips on terminals X1 and F or F1
using the screws supplied with the transformer.
Connect secondary load lines to terminals X2 and F or F2.
Use Jumper Link to connect F1 and F2.
Use dual-element slow-blowing fuses such as Bussmann
MFG., Fusetron Type FNM, Littelfuse or Ferraz Shawmut
(not supplied with fuse kits).
* PL79924: Use fuse kit on all transformers except 750 & 1000 VA
with 24 volt secondary.

Instructions for TB Series Secondary Fuse Kit
Type PL112603: use dual element slow-blow fuse 13/32" x 1-1/2" (1.0 x 3.8 cm)
1.To attach secondary fuse kit PL 112603 to
primary fuse kits PL112700 thru PL112705
snap the secondary single pole fuse block
onto the unlabeled side of the primary double
pole fuse block. (See Figure 1)
2.Install the fuse kits as instructed under the
primary fuse kit instructions on page 54.
3.Select the appropriate pair of jumpers for
making the connections between the
secondary fuse block and the secondary
(X-side) of the transformer.

Figure 2

4.Connect the female quick-connect of the
jumpers supplied to one of the male quickconnects of the secondary fuse block—one
jumper to each end of the fuse block. (See
Figure 2)
5.Connect the ring terminal of the jumpers
supplied to screw terminals X1 and F or F1
on the secondary (X-side) of the transformer.
6.Connect secondary load lines to terminals
X2 and F or F2.

Figure 1

58

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

5

TA &
SERIES
TB SERIES
OPEN
OPEN
CORE
CORE
& COIL
& COIL
INDUSTRIAL
INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

SELECTION CHARTS
GROUP A
120 X 240 PRIMARY VOLTS—12/24 SECONDARY VOLTS—1Ø, 50/60 Hz
CATALOG
NO.

VA
RATING

OUTPUT
AMPS

APPROX. DIMENSIONS
Inches (Cm.)
C
D

F

APPROX.
SHIP WEIGHT
Lbs. (Kg.)

PRIMARY
FUSE BLOCK
PART NO.

SECONDARY
FUSE SIZE
24 VOLTS

A

B

E

TB181141

50

2.08

4.23
(10.7)

3.00
(7.6)

2.70
(6.8)

2.50
(6.4)

2.13
(5.4)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

3 /10 amps

TB181142

75

3.13

4.74
(12.0)

3.00
(7.6)

2.70
(6.8)

2.50
(6.4)

2.61
(6.6)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

5 amps

TB181143

100

4.17

4.90
(12.4)

3.00
(7.6)

2.70
(6.8)

2.50
(6.4)

2.81
(7.1)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

6 /4 amps

TB181144

150

6.25

4.78
(12.1)

3.75
(9.5)

3.40
(8.6)

3.13
(8.0)

2.63
(6.7)

.22 x .50
(0.6 x 1.3)

6
(2.7)

PL112701

10 amps

TB181146

250

10.42

5.08
(12.9)

4.50
(11.4)

3.84
(9.8)

3.75
(9.5)

3.05
(7.7)

.22 x .50
(0.6 x 1.3)

9
(4.1)

PL112702

15 amps

TB181148

350

14.58

6.12
(15.5)

4.50
(11.4)

3.84
(9.8)

3.75
(9.5)

4.06
(10.3)

.22 x .50
(0.6 x 1.3)

13
(5.9)

PL112702

20 amps

TB181149

500

20.83

5.90
(15.0)

5.25
(13.3)

4.47
(11.4)

4.38
(11.1)

4.19
(10.6)

.31 x .50
(0.8 x 1.3)

16
(7.3)

PL112704

30 amps

TB181150

750

31.25

7.53
(19.1)

5.25
(13.3)

4.47
(11.4)

4.38
(11.1)

5.25
(13.3)

.31 x .50
(0.8 x 1.3)

24
(10.9)

PL112704

—

TB181151

1000

41.67

7.43
(18.9)

6.75
(17.1)

5.72
(14.5)

5.75
(14.6)

3.81
(9.7)

.31 x .50
(0.8 x 1.3)

26
(11.8)

PL112705

—

2

1

GROUP B
240 X 480, 230 X 460, 220 X 440 PRIMARY VOLTS—120/115/110 SECONDARY VOLTS—1Ø, 50/60 Hz
CATALOG
NO.

VA
RATING

OUTPUT
AMPS
@ 120V

F

APPROX.
SHIP WEIGHT
LBS. (KG.)

PRIMARY
FUSE BLOCK
PART NO.

SECONDARY
FUSE KIT
PART NO.

A

B

E

50

0.42

4.23
(10.7)

3.00
(7.6)

2.70
(6.8)

2.50
(6.4)

2.13
(5.4)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

*

TB81201

75

0.63

4.74
(12.0)

3.00
(7.6)

2.70
(6.8)

2.50
(6.4)

2.61
(6.6)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

*

1 amp

TB81211

100

0.83

4.90
(12.4)

3.00
(7.6)

2.70
(6.8)

2.50
(6.4)

2.81
(7.1)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

*

11/4 amps

TB81212

150

1.25

5.00
(12.7)

3.75
(9.5)

3.40
(8.6)

3.13
(8.0)

2.81
(7.1)

.22 x .50
(0.6 x 1.3)

6
(2.7)

PL112701

*

2 amps

TB81213

250

2.08

4.18
(10.6)

4.50
(11.4)

3.84
(9.8)

3.75
(9.5)

3.13
(8.0)

.22 x .50
(0.6 x 1.3)

9
(4.1)

PL112702

*

3 2/10 amps

TB81200

300

2.50

5.57
(14.1)

4.50
(11.4)

3.84
(9.8)

3.75
(9.5)

3.13
(8.0)

.22 x .50
(0.6 x 1.3)

10
(4.5)

PL112702

*

4 amps

TB81214

350

2.92

6.32
(16.1)

4.50
(11.4)

3.84
(9.8)

3.75
(9.5)

3.83
(9.7)

.22 x .50
(0.6 x 1.3)

12
(5.4)

PL112702

*

4 1/2 amps

TB81215

500

4.17

6.30
(16.0)

5.25
(13.3)

4.47
(11.4)

4.06
(10.3)

3.81
(9.7)

.22 x .50
(0.6 x 1.3)

15
(6.8)

PL112704

*

6 1/4 amps

TB81216

750

6.25

6.65
(16.9)

5.25
(13.3)

4.47
(11.4)

4.38
(11.1)

5.13
(13.0)

.31 x .50
(0.8 x 1.3)

23
(10.4)

PL112704

*

10 amps

TB81217

1000

8.33

7.58
(19.3)

6.75
(17.1)

5.78
(14.7)

5.75
(14.6)

3.69
(9.4)

.31 x .50
(0.8 x 1.3)

25
(11.3)

PL112705

*

12 amps

TB81210

APPROX. DIMENSIONS
INCHES (CM.)
C
D

SECONDARY
FUSE SIZE
120 VOLTS
6/10

amp

Secondary Fuse Kit PL112603 may be substituted for PL112600 thru PL112602 when Primary Fuse Kit is used. See page 58.
See chart for integrally mounted fuse block catalog number suffix.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

59

SECTION

5

GROUP B

TA &
SERIES
TB SERIES
OPEN
OPEN
CORE
CORE
& COIL
& COIL
INDUSTRIAL
INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

(CONTINUED)

240 X 480, 230 X 460, 220 X 440 PRIMARY VOLTS—120/115/110 SECONDARY VOLTS—1Ø, 50/60 Hz
CATALOG
NO.

VA
RATING

OUTPUT
AMPS
@ 120V

APPROX. DIMENSIONS
INCHES (CM.)
C
D

F

APPROX.
SHIP WEIGHT
LBS. (KG.)

PRIMARY
FUSE BLOCK
PART NO.

SECONDARY
FUSE KIT
PART NO.

SECONDARY
FUSE SIZE
120 VOLTS

A

B

E

TA2-81218

1500

12.50

8.80
(22.4)

6.75
(17.1)

5.72
(14.5)

5.75
(14.6)

5.75
(14.6)

.31 x .50
(0.8 x 1.3)

43
(19.5)

PL112705

PL112601

15 amps

TA2-81219

2000

16.67

9.25
(23.5)

6.75
(17.1)

5.72
(14.5)

5.75
(14.6)

6.38
(16.2)

.31 x .50
(0.8 x 1.3)

49
(22.2)

PL112705

PL112601

20 amps

TA2-81220

3000

25.00

8.81
(22.4)

7.50
(19.1)

8.34
(21.2)

6.50
(16.5)

7.52
(19.1)

.41 x .81
(1.0 x 2.1)

70
(31.8)

PL112706

—

—

TA281221

5000

41.67

7.52
(19.1)

11.92
(30.3)

9.49
(24.1)

6.75
(17.1)

6.25
(15.9)

.41 x .81
(1.0 x 2.1)

125
(56.7)

PL112707

—

—

* See fusing chart for secondary fuse kits.

Integrally Mounted Fuse Blocks Available:
(See Chart)

ADD SUFFIX
TO CATALOG NO.

GROUP ‘A’ THROUGH 500 VA
GROUP ‘B’ THROUGH 2000 VA

CONFIGURATION

F2

Factory installed integrally mounted 2-pole primary block

F3

Factory installed integrally mounted 3-pole primary and
secondary block (100 VA & larger)

F4

Factory installed 2-pole primary block and secondary
fuse clips (50 & 75 VA)

Consult factory for other sizes available.

GROUP C
240/480/600, 230/460/575, 220/440/550 PRIMARY VOLTS—120/100, 115/95, 110/90 SECONDARY VOLTS—1Ø, 50/60 Hz
CATALOG
NO.

VA
RATING

OUTPUT
AMPS
@ 120V

APPROX. DIMENSIONS
INCHES (CM.)
C
D

F

APPROX.
SHIP WEIGHT
LBS. (KG.)

PRIMARY
FUSE BLOCK
PART NO.

SECONDARY
FUSE KIT
PART NO.

A

B

E

TB81000

50

0.42

4.56
(11.6)

3.00
(7.6)

2.70
(6.8)

2.50
(6.4)

2.61
(6.6)

TB81009

75

0.63

4.90
(12.4)

3.00
(7.6)

2.70
(6.8)

2.50
(6.4)

TB81001

100

0.83

5.36
(13.6)

3.00
(7.6)

2.70
(6.8)

TB81002

150

1.25

5.00
(12.7)

3.75
(9.5)

TB81003

250

2.08

5.57
(14.1)

TB81020

300

2.50

TB81004

350

TB81005

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

*

2.81
(7.1)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

*

1 amp

2.50
(6.4)

3.26
(8.3)

.22 x .50
(0.6 x 1.3)

5
(2.3)

PL112700

*

11/4 amps

3.40
(8.6)

3.13
(8.0)

3.06
(7.8)

.22 x .50
(0.6 x 1.3)

7
(3.2)

PL112701

*

2 amps

4.50
(11.4)

3.84
(9.8)

3.75
(9.5)

3.50
(8.9)

.22 x .50
(0.6 x 1.3)

11
(5.0)

PL112702

*

3 2/10 amps

6.48
(16.5)

4.65
(11.8)

4.15
(10.5)

4.06
(10.3)

4.06
(10.3)

.22 x .50
(0.6 x 1.3)

15
(6.8)

PL112702

*

4 amps

2.92

6.48
(16.5)

4.65
(11.8)

4.15
(10.5)

4.06
(10.3)

4.06
(10.3)

.22 x .50
(0.6 x 1.3)

15
(6.8)

PL112702

*

4 1/2 amps

500

4.17

6.43
(16.3)

5.25
(13.3)

4.47
(11.4)

4.38
(11.1)

4.56
(11.6)

.31 x .50
(0.8 x 1.3)

21
(9.5)

PL112704

*

6 1/4 amps

TB81006

750

6.25

7.19
(18.3)

6.75
(17.1)

5.78
(14.7)

5.75
(14.6)

3.81
(9.7)

.31 x .50
(0.8 x 1.3)

25
(11.3)

PL112705

*

10 amps

TB81007

1000

8.33

7.96
(20.2)

6.75
(17.1)

5.78
(14.7)

5.75
(14.6)

4.63
(11.8)

.31 x .50
(0.8 x 1.3)

32
(14.5)

PL112705

*

12 amps

TA281008

1500

12.50

9.46
(24.0)

6.75
(17.1)

5.72
(14.5)

5.75
(14.6)

6.38
(16.2)

.31 x .50
(0.8 x 1.3)

47
(21.3)

PL112705

PL112601

15 amps

TA253929

2000

16.67

7.90
(20.1)

7.50
(19.1)

7.66
(19.5)

6.50
(16.5)

6.57
(16.7)

.41 x .81
(1.0 x 2.1)

55
(24.9)

PL112706

PL112601

20 amps

TA253930

3000

25.00

7.02
(17.8)

11.92
(30.3)

8.83
(22.4)

6.75
(17.1)

5.75
(14.6)

.41 x .81
(1.0 x 2.1)

75
(34.0)

PL112707

—

—

TA253931

5000

41.67

7.52
(19.1)

11.92
(30.3)

9.49
(24.1)

6.75
(17.1)

6.25
(15.9)

.41 x .81
(1.0 x 2.1)

110
(49.9)

PL112707

—

—

* See fusing chart for secondary fuse kits.
Secondary Fuse Kit PL-112603 may be substituted for PL112600 thru PL112602 when Primary Fuse Kit is used. See page 58.
See chart for integrally mounted fuse block catalog number suffix.
60

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECONDARY
FUSE SIZE
120 VOLTS
6/10

amp

SECTION

5

TA &
SERIES
TB SERIES
OPEN
OPEN
CORE
CORE
& COIL
& COIL
INDUSTRIAL
INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

GROUP D
208/240/277/380/480 PRIMARY VOLTS—24 SECONDARY VOLTS—1Ø, 50/60 Hz
CATALOG
NO.

VA
RATING

OUTPUT
AMPS

APPROX. DIMENSIONS
INCHES (CM.)
C
D

F

APPROX.
SHIP WEIGHT
LBS. (KG.)

PRIMARY
FUSE BLOCK
PART NO.

SECONDARY
FUSE KIT
PART NO.

SECONDARY
FUSE SIZE
24 VOLTS

A

B

E

TB81321

50

2.08

4.08
(10.4)

3.75
(9.5)

3.40
(8.6)

3.13
(8.0)

2.19
(5.6)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112701

*

3 2/10 amp

TB81322

75

3.13

4.31
(10.9)

3.75
(9.5)

3.40
(8.6)

3.13
(8.0)

2.31
(5.9)

.22 x .50
(0.6 x 1.3)

5
(2.3)

PL112701

*

5 amps

TB81323

100

4.17

4.52
(11.5)

3.75
(9.5)

3.40
(8.6)

3.13
(8.0)

2.63
(6.7)

.22 x .50
(0.6 x 1.3)

5
(2.3)

PL112701

*

6 1/4 amps

TB81324

150

6.25

4.75
(12.1)

4.50
(11.4)

3.84
(9.8)

3.75
(9.5)

3.05
(7.7)

.22 x .50
(0.6 x 1.3)

9
(4.1)

PL112702

*

10 amps

TB81325

250

10.42

5.24
(13.3)

4.65
(11.8)

4.15
(10.5)

4.06
(10.3)

3.25
(8.3)

.22 x .50
(0.6 x 1.3)

11
(5.0)

PL112702

*

15 amps

TB81326

350

14.58

6.02
(15.3)

5.25
(13.3)

4.47
(11.4)

4.38
(11.1)

4.00
(10.2)

.31 x .50
(0.8 x 1.3)

18
(8.2)

PL112704

*

20 amps

TB81327

500

20.83

6.51
(16.5)

5.25
(13.3)

4.47
(11.4)

4.38
(11.1)

4.19
(10.6)

.31 x .50
(0.8 x 1.3)

19
(8.6)

PL112704

*

30 amps

TB81328

750

31.25

7.08
(18.0)

6.75
(17.1)

5.78
(14.7)

5.75
(14.6)

3.81
(9.7)

.31 x .50
(0.8 x 1.3)

26
(11.8)

PL112705

*

—
33 amps

TB81329

1000

41.67

8.10
(20.6)

6.75
(17.1)

5.72
(14.5)

5.75
(14.6)

4.63
(11.8)

.31 x .50
(0.8 x 1.3)

33
(15.0)

PL112705

*

—

PRIMARY
FUSE BLOCK
PART NO.

SECONDARY
FUSE KIT
PART NO.

SECONDARY
FUSE SIZE
115 VOLTS

* See fusing chart for secondary fuse kits.

GROUP E
208/277/380 PRIMARY VOLTS—115/95 SECONDARY VOLTS—1Ø, 50/60 Hz
CATALOG
NO.

VA
RATING

OUTPUT
AMPS
@ 115V

APPROX. DIMENSIONS
INCHES (CM.)
C
D

A

B

E

F

APPROX.
SHIP WEIGHT
LBS. (KG.)

TB81301

50

0.43

4.35
(11.0)

3.00
(7.6)

2.70
(6.8)

2.50
(6.4)

2.61
(6.6)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

*

TB81302

75

0.65

4.74
(12.0)

3.00
(7.6)

2.70
(6.8)

2.50
(6.4)

2.81
(7.1)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

*

1 amp

TB81303

100

0.87

4.45
(11.3)

3.75
(9.5)

3.40
(8.6)

3.13
(8.0)

2.44
(6.2)

.22 x .50
(0.6 x 1.3)

5
(2.3)

PL112701

*

11/4 amps

TB81304

150

1.30

5.00
(12.7)

3.75
(9.5)

3.84
(9.8)

3.13
(8.0)

3.06
(7.8)

.22 x .50
(0.6 x 1.3)

5
(2.3)

PL112701

*

2 amps

TB81305

250

2.17

5.68
(14.4)

4.50
(11.4)

3.84
(9.8)

3.75
(9.5)

4.06
(10.3)

.22 x .50
(0.6 x 1.3)

13
(5.9)

PL112702

*

3 1/2 amps

TB81306

350

3.04

6.30
(16.0)

4.65
(11.8)

4.15
(10.5)

4.06
(10.3)

4.75
(12.1)

.22 x .50
(0.6 x 1.3)

18
(8.2)

PL112702

*

5 amps

TB81307

500

4.35

6.22
(15.8)

5.25
(13.3)

4.47
(11.4)

4.38
(11.1)

4.56
(11.6)

.22 x .50
(0.6 x 1.3)

20
(9.1)

PL112704

*

7 amps

TB81308

750

6.52

6.82
(17.3)

6.75
(17.1)

5.78
(14.7)

5.75
(14.6)

3.69
(9.4)

.31 x .50
(0.8 x 1.3)

24
(10.9)

PL112705

*

10 amps

TB81309

1000

8.70

7.96
(20.2)

6.75
(17.1)

5.72
(14.5)

5.75
(14.6)

4.44
(11.3)

.31 x .50
(0.8 x 1.3)

31
(14.1)

PL112705

*

12 amps

6/10

amp

* See fusing chart for secondary fuse kits.

Secondary Fuse Kit PL112603 may be substituted for PL112600 thru PL112602 when Primary Fuse Kit is used. See page 58.
See chart for integrally mounted fuse block catalog number suffix.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

61

5

SECTION

TA &
SERIES
TB SERIES
OPEN
OPEN
CORE
CORE
& COIL
& COIL
INDUSTRIAL
INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

GROUP F
380/440/550/600 PRIMARY VOLTS—115/230 SECONDARY VOLTS—1Ø, 50/60 Hz
CATALOG
NO.

APPROX. DIMENSIONS
INCHES (CM.)
C
D

VA
RATING

OUTPUT
AMPS
@ 115V

APPROX.
SHIP WEIGHT
LBS. (KG.)

PRIMARY
FUSE BLOCK
PART NO.

SECONDARY
FUSE SIZE
115 VOLTS

A

B

E

F

TA254535

50

0.43

4.12
(10.5)

3.75
(9.5)

3.21
(8.2)

3.13
(8.0)

2.19
(5.6)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112701

TA254536

100

0.87

4.56
(11.6)

3.75
(9.5)

3.21
(8.2)

3.13
(8.0)

2.31
(5.9)

.22 x .50
(0.6 x 1.3)

5
(2.3)

PL112701

11/4 amps

TA254537

150

1.30

5.00
(12.7)

3.75
(9.5)

3.21
(8.2)

3.13
(8.0)

3.06
(7.8)

.22 x .50
(0.6 x 1.3)

10
(4.5)

PL112701

2 amps

TA254538

250

2.17

5.49
(13.9)

4.50
(11.4)

3.84
(9.8)

3.75
(9.5)

3.50
(8.9)

.22 x .50
(0.6 x 1.3)

11
(5.0)

PL112702

3 1/2 amps

TA281197

350

3.04

6.03
(15.3)

4.88
(12.4)

4.15
(10.5)

4.06
(10.3)

4.38
(11.1)

.22 x .50
(0.6 x 1.3)

17
(7.7)

PL112703

5 amps

TA254539

500

4.35

6.76
(17.1)

4.88
(12.4)

4.15
(10.5)

4.06
(10.3)

5.75
(14.6)

.22 x .50
(0.6 x 1.3)

23
(10.4)

PL112703

7 amps

TA281240

750

6.52

7.19
(18.3)

6.75
(17.1)

5.72
(14.5)

5.75
(14.6)

3.69
(9.4)

.31 x .50
(0.8 x 1.3)

25
(11.3)

PL112705

10 amps

TA281241

1000

8.70

7.77
(19.7)

6.75
(17.1)

5.72
(14.5)

5.75
(14.6)

4.44
(11.3)

.31 x .50
(0.8 x 1.3)

30
(13.6)

PL112705

12 amps

6/10

amp

GROUP G
240/416/480/600; 230/400/460/575; 220/380/440/550; 208/500 PRIMARY VOLTS
99/120/130; 95/115/125; 91/110/120; 85/100/110 SECONDARY VOLTS —1Ø, 50/60 Hz
APPROX. DIMENSIONS
INCHES (CM.)
C
D
E

CATALOG
NO.

VA
RATING
@ 130V

OUTPUT
AMPS

F

APPROX.
SHIP WEIGHT
LBS. (KG.)

PRIMARY
FUSE BLOCK
PART NO.

SECONDARY
FUSE KIT
PART NO.

A

B

TB32403

50

0.38

4.08
(10.4)

3.75
(9.5)

3.40
(8.6)

3.13
(8.0)

2.31
(5.9)

TB32404

150

1.15

4.75
(12.1)

4.50
(11.4)

3.84
(9.8)

3.75
(9.5)

TB32405

250

1.92

5.58
(14.2)

4.65
(11.8)

4.15
(10.5)

TB32669

350

2.69

6.23
(15.8)

4.65
(11.8)

TB32406

500

3.85

6.40
(16.3)

TB54523

750

5.77

TB54524

1000

TA254525

.22 x .50
(0.6 x 1.3)

5
(2.3)

PL112701

NA

3.05
(7.7)

.22 x .50
(0.6 x 1.3)

10
(4.5)

PL112702

NA

16/10 amps

4.06
(10.3)

4.06
(10.3)

.22 x .50
(0.6 x 1.3)

16
(7.3)

PL112702

NA

3 2/10 amps

4.15
(10.5)

4.06
(10.3)

5.50
(14.0)

.22 x .50
(0.6 x 1.3)

22
(10.0)

PL112702

NA

4 amps

6.75
(17.1)

5.78
(14.7)

5.75
(14.6)

3.69
(9.4)

.22 x .50
(0.6 x 1.3)

23
(10.4)

PL112705

NA

6 1/4 amps

7.08
(18.0)

6.75
(17.1)

5.78
(14.7)

5.75
(14.6)

4.13
(10.5)

.31 x .50
(0.8 x 1.3)

29
(13.2)

PL112705

NA

9 amps

7.69

8.56
(21.7)

6.75
(17.1)

5.78
(14.7)

5.75
(14.6)

4.88
(12.4)

.31 x .50
(0.8 x 1.3)

35
(15.9)

PL112705

NA

12 amps

1500

11.54

6.75
(17.1)

7.50
(19.1)

7.66
(19.5)

6.50
(16.5)

5.42
(13.8)

.41 x .81
(1.0 x 2.1)

55
(24.9)

PL112706

PL-112601

20 amps

TA281202

2000

15.39

7.45
(18.9)

7.50
(19.1)

7.66
(19.5)

6.50
(16.5)

6.12
(15.5)

.41 x .81
(1.0 x 2.1)

55
(24.9)

PL112706

PL-112601

25 amps

TA281203

3000

23.08

7.02
(17.8)

11.92
(30.3)

8.83
(22.4)

6.75
(17.1)

5.75
(14.6)

.41 x .81
(1.0 x 2.1)

70
(31.8)

PL112707

—

—

TA281205

5000

38.46

7.52
(19.1)

11.92
(30.3)

9.49
(24.1)

6.75
(17.1)

6.25
(15.9)

.41 x .81
(1.0 x 2.1)

110
(49.9)

PL112707

—

—

Secondary Fuse Kit PL112603 may be substituted for PL112600 thru PL112602 when Primary Fuse Kit is used. See page 58.
Secondary fuse kit application for 115V only.

62

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECONDARY
FUSE SIZE
130 VOLTS
6/10

amp

SECTION

5

TA &
SERIES
TB SERIES
OPEN
OPEN
CORE
CORE
& COIL
& COIL
INDUSTRIAL
INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

CONNECTION DETAILS FOR GROUP G
CONNECT TO LINE FOR RESPECTIVE VOLTAGE

OUTPUT VOLTS

H1-H2

H1-H3

H1-H4

H1-H5

X1-X2

X1-X3

X1-X4

208

––

––

500

85

100

110

220

380

440

550

91

110

120

230

400

460

575

95

115

125

240

416

480

600

99

120

130

GROUP H
208/230/460 PRIMARY VOLTS—115 SECONDARY VOLTS—1Ø, 50/60 Hz
CATALOG
NO.

APPROX. DIMENSIONS
INCHES (CM.)
C
D

VA
RATING

OUTPUT
AMPS

F

APPROX.
SHIP WEIGHT
LBS. (KG.)

PRIMARY
FUSE BLOCK
PART NO.

SECONDARY
FUSE KIT
PART NO.

SECONDARY
FUSE SIZE
115 VOLTS

A

B

E

TB69300

50

0.43

4.44
(11.3)

3.00
(7.6)

2.70
(6.8)

2.50
(6.4)

2.61
(6.6)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

*

6/10 amp

TB69301

100

0.87

5.21
(13.2)

3.00
(7.6)

2.70
(6.8)

2.50
(6.4)

3.26
(8.3)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

*

1 4/10 amps

TB69302

150

1.30

5.10
(13.0)

3.75
(9.5)

3.40
(8.6)

3.13
(8.0)

3.06
(7.8)

.22 x .50
(0.6 x 1.3)

7
(3.2)

PL112701

*

2 amps

TB69303

250

2.17

5.38
(13.7)

4.50
(11.4)

3.84
(9.8)

3.75
(9.5)

3.50
(8.9)

.22 x .50
(0.6 x 1.3)

11
(5.0)

PL112702

*

3 1/2 amps

TB69304

350

3.04

5.90
(15.0)

4.65
(11.8)

4.15
(10.5)

4.06
(10.3)

3.81
(9.7)

.22 x .50
(0.6 x 1.3)

15
(6.8)

PL112702

*

5 amps

TB69305

500

4.35

6.22
(15.8)

5.25
(13.3)

4.47
(11.4)

4.38
(11.1)

4.56
(11.6)

.31 x .50
(0.8 x 1.3)

20
(9.1)

PL112704

*

7 amps

TB69306

750

6.52

6.82
(17.3)

6.75
(17.1)

5.78
(14.7)

5.75
(14.6)

3.81
(9.7)

.31 x .50
(0.8 x 1.3)

26
(11.8)

PL112705

*

10 amps

TB69307

1000

8.70

7.96
(20.2)

6.75
(17.1)

5.78
(14.7)

5.75
(14.6)

4.63
(11.8)

.31 x .50
(0.8 x 1.3)

33
(15.0)

PL112705

*

12 amps

* See fusing chart for secondary fuse kits.

GROUP I
600 PRIMARY VOLTS—12/24 SECONDARY VOLTS—1Ø, 60 Hz
APPROX. DIMENSIONS
INCHES (CM.)
C
D

CATALOG
NO.

VA
RATING

OUTPUT
AMPS
@ 12V

F

APPROX.
SHIP WEIGHT
LBS. (KG.)

PRIMARY
FUSE BLOCK
PART NO.

A

B

E

TA83300

50

4.17

4.13
(10.5)

3.00
(7.6)

2.59
(6.6)

2.50
(6.4)

2.30
(5.8)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

TA83301

100

8.33

4.90
(12.4)

3.00
(7.6)

2.59
(6.6)

2.50
(6.4)

3.35
(8.5)

.22 x .50
(0.6 x 1.3)

4
(1.8)

PL112700

TA83302

150

12.50

4.92
(12.5)

3.75
(9.5)

3.21
(8.2)

3.13
(8.0)

2.81
(7.1)

.22 x .50
(0.6 x 1.3)

6
(2.7)

PL112701

TA83303

250

20.83

5.38
(13.7)

4.50
(11.4)

3.84
(9.8)

3.75
(9.5)

3.05
(7.7)

.22 x .50
(0.6 x 1.3)

9
(4.1)

PL112702

TA83304

500

41.67

6.06
(15.4)

4.88
(12.4)

4.15
(10.5)

4.06
(10.3)

4.06
(10.3)

.22 x .50
(0.6 x 1.3)

13
(5.9)

PL112703

TA83305

750

62.50

6.43
(16.3)

5.25
(13.3)

4.47
(11.4)

4.38
(11.1)

4.00
(10.2)

.31 x .50
(0.8 x 1.3)

21
(9.5)

PL112704

TA83306

1000

83.33

7.30
(18.5)

6.75
(17.1)

5.72
(14.5)

5.75
(14.6)

3.69
(9.4)

.31 x .50
(0.8 x 1.3)

24
(10.9)

PL112705

Secondary Fuse Kit PL112603 may be substituted for PL112600 thru PL112602 when Primary Fuse Kit is used. See page 58.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

63

SECTION

5

TA &
SERIES
TB SERIES
OPEN
OPEN
CORE
CORE
& COIL
& COIL
INDUSTRIAL
INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

GROUP J
240 X 480 PRIMARY VOLTS—120/240 SECONDARY VOLTS—1Ø, 60 Hz
CATALOG
NO.

VA
RATING

OUTPUT
AMPS
@ 120V

TB83210

50

0.42

TB83212

100

0.83

TB83213

150

1.25

TB83215

250

2.08

TB83218

500

4.17

TB83219

750

6.25

TB83220

1000

8.33

TA83221

1500

12.50

TA83222

2000

16.67

TA83223

3000

25.00

TA83224

5000

41.67

A
4.13
(10.5)
4.90
(12.4)
4.92
(12.5)
5.38
(13.7)
6.06
(15.4)
6.43
(16.3)
7.34
(18.6)
8.80
(22.4)
9.15
(23.2)
7.00
(17.8)
7.06
(17.9)

B
3.00
(7.6)
3.00
(7.6)
3.75
(9.5)
4.50
(11.4)
5.25
(13.3)
5.25
(13.3)
6.75
(17.1)
6.75
(17.1)
6.75
(17.1)
7.50
(19.1)
11.92
(30.3)

APPROX. DIMENSIONS
INCHES (CM.)
C
D

2.70
(6.8)
2.70
(6.8)
3.40
(8.6)
3.84
(9.8)
4.47
(11.4)
4.47
(11.4)
5.78
(14.7)
5.72
(14.5)
5.72
(14.5)
7.66
(19.5)
8.75
(22.2)

2.50
(6.4)
2.50
(6.4)
3.13
(8.0)
3.75
(9.5)
4.06
(10.3)
4.38
(11.1)
5.75
(14.6)
5.75
(14.6)
5.75
(14.6)
6.50
(16.5)
6.75
(17.1)

E
2.30
(5.8)
3.35
(8.5)
2.81
(7.1)
3.05
(7.7)
4.06
(10.3)
5.30
(13.0)
3.69
(9.4)
5.02
(12.8)
5.42
(13.8)
5.55
(14.1)
5.75
(14.6)

F
.22 x .50
(0.6 x 1.3)
.22 x .50
(0.6 x 1.3)
.22 x .50
(0.6 x 1.3)
.22 x .50
(0.6 x 1.3)
.22 x .50
(0.6 x 1.3)
.31 x .50
(0.8 x 1.3)
.31 x .50
(0.8 x 1.3)
.31 x .50
(0.8 x 1.3)
.31 x .50
(0.8 x 1.3)
.41 x .81
(1.0 x 2.1)
.41 x .81
(1.0 x 2.1)

APPROX.
SHIP WEIGHT
LBS. (KG.)

PRIMARY
FUSE BLOCK
PART NO.

4
(1.8)
4
(1.8)
6
(2.7)
9
(4.1)
13
(5.9)
21
(9.5)
24
(10.9)
43
(19.5)
48
(21.8)
51
(23.1)
90
(40.8)

PL112700

APPROX.
SHIP WEIGHT
LBS. (KG.)
4
(1.8)

PRIMARY
FUSE BLOCK
PART NO.
PL112700

4
(1.8)
6
(2.7)
9
(4.1)
13
(5.9)
21
(9.5)
24
(10.9)

PL112700

PL112700
PL112701
PL112702
PL112704
PL112704
PL112705
PL112705
PL112705
PL112706
PL112707

GROUP K
600 PRIMARY VOLTS—120/240 SECONDARY VOLTS—1Ø, 60 Hz
CATALOG
NO.

VA
RATING

TA83310

50

OUTPUT
AMPS
@ 120V
0.42

TA83311

100

0.83

TA83312

150

1.25

TA83313

250

2.08

TA83314

500

4.17

TA83315

750

6.25

TA83316

1000

8.33

A
4.13
(10.5)
4.90
(12.4)
4.92
(12.5)
5.38
(13.7)
6.06
(15.4)
6.43
(16.3)
7.34
(18.6)

B
3.00
(7.6)
3.00
(7.6)
3.75
(9.5)
4.50
(11.4)
4.88
(12.4)
5.25
(13.3)
6.75
(17.1)

APPROX. DIMENSIONS
INCHES (CM.)
C
D
2.59
2.50
(6.6)
(6.4)

2.59
(6.6)
3.21
(8.2)
3.84
(9.8)
4.15
(10.5)
4.47
(11.4)
5.72
(14.5)

2.50
(6.4)
3.13
(8.0)
3.75
(9.5)
4.06
(10.3)
4.38
(11.1)
5.75
(14.6)

E
2.30
(5.8)
3.35
(8.5)
2.81
(7.1)
3.05
(7.7)
4.06
(10.3)
4.00
(10.2)
3.69
(9.4)

F
.22 x .50
(0.6 x 1.3)
.22 x .50
(0.6 x 1.3)
.22 x .50
(0.6 x 1.3)
.22 x .50
(0.6 x 1.3)
.22 x .50
(0.6 x 1.3)
.31 x .50
(0.8 x 1.3)
.31 x .50
(0.8 x 1.3)

PL112701
PL112702
PL112703
PL112704
PL112705

* See fusing chart for secondary fuse kits.

TA & TB SERIES PROTECTIVE DEVICES –
Primary Fuse Kits
FUSES ARE NOT INCLUDED. CONSULT CATALOG FOR
PROPER FUSE SELECTION.

FOR USE WITH INDUSTRIAL CONTROL TRANSFORMERS THROUGH 1500 VA.

CATALOG NO.

APPROX. SHIP WEIGHT Lbs. (Kg.)

PL112600

0.5 (0.2)

1 (0.5)

PL112601

0.5 (0.2)

1 (0.5)

PL112602

1 (0.5)

PL112702

1 (0.5)

PL112603

1 (0.5)

PL112703

1 (0.5)

PL112704

1 (0.5)

PL112705

1 (0.5)

PL112706

1 (0.5)

PL112707

1 (0.5)

CATALOG NO.

PL112700
PL112701

64

TA SERIES PROTECTIVE DEVICES – Secondary Fuse Kits

APPROX. SHIP WEIGHT Lbs. (Kg.)

TB SERIES PROTECTIVE DEVICES– Secondary Fuse Kits
CATALOG NO.

VA

DESCRIPTION

APPROX. SHIPPING WT.
(LBS./ KG.)

PL79924
PL79928
PL79929
PL79930
PL79931

50 – 350
500 & 750
50 – 350
500 & 1000

Fuse Kit: Secondary Fuse 1/4" x 1-1/4" w/ARM
Link: Small Jumper Links (Qty. 2)
Link: Large Jumper Links (Qty. 2)
Fuse Kit: Secondary Fuse Midget w/ARM
Fuse Kit: Secondary Fuse Midget w/ARM

1.0 (0.5)
1.0 (0.5)
1.0 (0.5)
1.0 (0.5)
1.0 (0.5)

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

5

SECTION

TA SERIES OPEN CORE & COIL INDUSTRIAL CONTROL TRANSFORMERS

TA Series Open Core & Coil Wiring Diagrams
Group A

Group B
120V

240V
H1 H3 H2 H4
H1

H1 H3

240V
230
220

H1 H3 H2 H4

H2 H4

H2

H3

Group C

480V
460
440
H4

H1

H1 H3

H4

X2

X1

X1

H1

Group F

H2

H1

H4

H3

380V
277V
208V

H1

95V

Group G

Group H
H4

460V
230V

X1 X4 X2

X3

600V

X4

X2

X4 X2 X3

X1 X4 X2

X3

X1
X3 X1

12V

24V

H2

X2

115V

X1

115V

Group K
240V

480V

H2

H3

X1
X3 X1

Group J

H1

X1

H1

X2

230V

Group I

24V

H4

X4 X2 X3
X1

X3

H3
H2

H5

600V
550V
H3
440V
380V H2

X4

115V

H5
H4

X1

208V

X2

H6

480V
380V
277V
240V
208V

X2

120V
115
110

X3

Group E

600V
575
550

100V
95
90

X2

X2

H4

H3

480V
460
440

240V
230
220

120V
115
110

24V

Group D

H2

H2 H4

H2

H3

H1

H1

H1 H3 H2 H4

H1 H3

H1

H3

H2

H4

X4

X2

X3

X1

X4 X2 X3

X1 X4 X2

240V

H2

H2 H4

X3 X1

600V

X4

X2

X4 X2 X3

X1 X4 X2

240V

120V

X3

X1
X3 X1

120V

TA Series Open Core & Coil Dimensional Drawings
50 VA Thru 2 kVA
C

3 & 5 kVA
C

B

E

A

A

E

F
D

F

D
B

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

65

SECTION

5

TA SERIES OPEN CORE & COIL INDUSTRIAL CONTROL TRANSFORMERS
TB

TB Series Open Core & Coil Wiring Diagrams
Group A

Group B

120V

480V
460
440

H1 H3

240V

H2 H4

H1

H1 H3 H2 H4

H3

H4

H2

H1 H3 H2 H4
H1

X4

X2

X4 X2

X3

X2

H2

H4

480V
460
440

240V
230
220

H1

120V
115
110

X2

H3
H2

24V

X1

Group J
240V

480V
H1

H4

460V
230V

208V
208V

95V
X2

115V

H1 H3 H2 H4

H1 H3

H1

H3

H2

X4

X2

X3

X4 X2 X3

X1 X4 X2

H2 H4
H4

H3

H2

115V

X1

X1
X3 X1

X1

240V

TB Series Open Core & Coil Dimensional Drawings
B

D

C
A

E

F

66

H5
H4

X1

H4

H3

H6

480V
380V
277V
240V
208V

100V
95
90

X2

277V

X3

600V
575
550

Group H

380V

X2

H4

H3

H2 H4

X1

Group G

Group D

H2

X3

Group E
H1

H2

H1

120V
115
110

X1

24V

H1 H3

H3

X1

X3 X1 X4 X2 X3

12V

Group C
240V
230
220

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

120V

SECTION
SECTION

5

TAINDUSTRIAL
SERIES OPEN CORE
CONTROL
& COIL TRANSFORMERS
INDUSTRIAL CONTROL TRANSFORMERS

Industrial Control Transformers for
Harsh Environments
Designed for Control Panels where Internal
Installation of Control Transformers is prohibited.
Some specifications require installation of large control transformers, usually 1000 to
5000 VA outside the control cabinet. This means the transformer must be in a sheet
metal enclosure instead of the usual open core and coil construction method.
Acme meets this need by providing all of the power, protection, regulation and
performance of our standard industrial control transformers in one UL -3R enclosure.
These transformers are wound with copper magnet wire, deliver full nameplate
capacity, and provide the high regulation required in control applications.
Voltage combinations available are: 240 x 480V primary, 120V secondary and
240/480/600V primary, 120/100V secondary. Ratings available are 1000, 2000, 3000
and 5000 VA. All units are UL listed, CSA certified, and covered by Acme’s exclusive
10-year limited warranty.

FEATURES
Fully encapsulated and enclosed.
55°C temperature rise, 155°C insulation.
Copper windings.
1000, 2000, 3000, 5000 and 10000 VA sizes.
Voltage regulation exceeds NEMA requirements.
UL and UL-3R listed.
CSA certified.
10-year limited warranty.

GROUP L
240 x 480 PRIMARY VOLTS—120 SECONDARY VOLTS —1Ø, 50/60 Hz
APPROX. DIMENSIONS
INCHES (CM.)
H
W
D

APPROX. SHIP
WEIGHT
LBS. (KG.)

ELECTRICAL
CONNECTION
DIAGRAM

7.13
(18.1)

55
(24.9)

B

10.31
(26.2)

7.13
(18.1)

80
(36.3)

B

14.77
(37.5)

10.31
(26.2)

7.13
(18.1)

100
(45.4)

B

41.67

13.85
(35.2)

13.25
(33.7)

10.19
(25.9)

140
(63.5)

B

83.3

16.47
(41.8)

13.88
(35.3)

12.94
(32.9)

308
(139.7)

B

CATALOG
NO.

VA
RATING

OUTPUT
AMPS

T181217

1000

8.33

13.10
(33.3)

10.31
(26.2)

T181219

2000

16.67

14.77
(37.5)

T181220

3000

25.00

T181221

5000

T181223

10000

D

H

GROUP M
240/480/600 PRIMARY VOLTS—120/100 Secondary Volts —1Ø, 50/60 Hz
CATALOG
NO.
T153929

VA
RATING
2000

OUTPUT
AMPS
16.67

T153930

3000

25.00

T153931

5000

41.67

APPROX. DIMENSIONS
INCHES (CM.)
H
W
D
14.77
10.31
7.13
(37.5)
(26.2)
(18.1)
13.85
13.25
10.19
(35.2)
(33.7)
(25.9)
13.85
13.25
10.19
(35.2)
(33.7)
(25.9)

APPROX. SHIP
WEIGHT
LBS. (KG.)
80
(36.3)
130
(59.0)
140
(63.5)

W

ELECTRICAL
CONNECTION
DIAGRAM
C

Encapsulated
1000 VA–10000 VA

C
C

See page 70 for electrical diagram.
See page 58 for fuse sizing information.
For secondary fuse size, multiply output amps x 1.25.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

67

SECTION

5

TA SERIES
AE/CE
SERIES
OPEN CORE
INDUSTRIAL
& COIL INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

AE/CE Series Industrial Control Transformers
The Acme Electric AE and CE Series Industrial Control
Transformers are designed specifically for machine tool
control circuit applications. These transformers have
the ability to handle potentially damaging high in-rush
currents that occur when electromagnetic components are
energized, without sacrificing the required stable output
voltage. Designed to meet or exceed the demands of
international standards, combined with the full breadth
of product offering, the AE and CE Series Transformers
from Acme Electric are the ideal solution for your industrial
control applications.

Cooler. Cleaner. More Compact.

FEATURES & BENEFITS
Epoxy encapsulated design protects core & coil assembly
from potentially damaging contaminants.
Integrally molded terminal blocks with isolation barriers to
prevent arc over, terminal blocks allow full access for ring
terminals for easy installation and solid termination.

The AE and CE Series design improves the dissipation of
the heat away from the core and coil assembly providing
cooler operation. In addition, the AE and CE Series industrial
control transformers seal the transformer’s windings and
internal terminations within an epoxy encapsulant encased
in a durable thermoplastic end cap, protecting them from
potentially damaging moisture, dirt and other ambient
contaminants. Furthermore, Acme’s compact design helps
minimize the mounting footprint, providing more flexibility
in applications where space is at a premium.

Heavy gauge steel mounting feet.
Available factory or field installed fuse blocks provide
integral fusing on the primary or primary and secondary.
Dual labeling for easy product identification when
equipped with a fuse block.
50-750 VA, 50/60 Hz.
UL and cUL Listed, CE Marked (CE Series only).
Ten-year limited warranty.
55°C Temperature Rise.
105°C Insulation Class.

CE Series for Global Applications
Acme’s CE Series Encapsulated Industrial Control
Transformers carry the CE mark, indicating it complies with the
requirements established by the International Electrotechnical
Commission (IEC) for use of control
circuit transformers in the countries of
the European Union. Regulations that
apply to control transformers include
Low Voltage Directive 73/23/EEC and
Electromagnetic Compatibility (EMC)
Directive 89/336/EEC.

68

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

5

TA SERIES
AE/CE
SERIES
OPEN CORE
INDUSTRIAL
& COIL INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

FEATURES

Integrally molded terminal blocks with
combination slotted/phillips screws. Isolation barriers
protect against arc over while able to accommodate
a full ring terminal.

Integrally mounted fuse blocks
available in standard and touch-proof
(CE Series) style.

Dual labels for
identification
of fused modules

CE Series offers touch-proof terminals,
isolating live contacts for
additional safety.

Epoxy encapsulated copper
windings and internal terminations,
providing isolation from external
contaminants and physical damage.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

69

SECTION

5

TA SERIES
AE/CE
INDUSTRIAL
OPEN CORE &CONTROL
COIL INDUSTRIAL
TRANSFORMERS
CONTROL TRANSFORMERS

SELECTION CHARTS

AE SERIES

GROUP I

C

120 x 240 PRIMARY VOLTS—24 SECONDARY VOLTS –– 1Ø, 50/60 Hz
APPROX. DIMENSIONS INCHES (CM.)
B
C
D

E

MOUNTING SLOT
F

APPROX.
SHIPPING WT

2.03 (5.1)

2.53 (6.4)

.20 x .40 (0.5 x 1.0)

2.50 (1.1)

2.53 (6.4)

2.53 (6.4)

.20 x .40 (0.5 x 1.0)

3.50 (1.6)

3.09 (7.8)

2.41 (6.1)

2.81 (7.1)

.20 x .40 (0.5 x 1.0)

4.05 (1.8)

3.41 (8.6)

2.97 (7.5)

3.13 (7.9)

.20 x .40 (0.5 x 1.0)

6.50 (2.9)

4.50 (11.4)

3.84 (9.7)

2.94 (7.4)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

9.25 (4.2)

4.50 (11.4)

3.84 (9.7)

3.78 (9.6)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

12.75 (5.8)

5.53 (14.0)

5.25 (13.3)

4.66 (11.8)

4.16 (10.5)

4.38 (11.1)

.31 x .69 (0.8 x 1.7)

19.00 (8.6)

6.81 (17.3)

5.25 (13.3)

4.66 (11.8)

5.75 (14.6)

4.38 (11.1)

.31 x .69 (0.8 x 1.7)

26.00 (11.8)

VA
RATING

CATALOG NUMBER

A

50

AE010050

2.69 (6.8)

3.00 (7.6)

2.81 (7.1)

75

AE010075

3.22 (8.1)

3.00 (7.6)

2.81 (7.1)

100

AE010100

3.28 (8.3)

3.41 (8.6)

150

AE010150

3.88 (9.8)

3.78 (9.6)

250

AE010250

4.13 (10.4)

350

AE010350

5.00 (12.7)

500

AE010500

750

AE010750

GROUP II
200/220/440, 208/230/460, 240/480 PRIMARY VOLTS—23/110, 24/115, 25/120 SECONDARY VOLTS—1Ø, 50/60 Hz
APPROX. DIMENSIONS INCHES (CM.)
B
C
D

E

MOUNTING SLOT
F

APPROX.
SHIPPING WT

2.25 (5.7)

2.53 (6.4)

.20 x .40 (0.5 x 1.0)

3.0 (1.4)

2.53 (6.4)

2.81 (7.1)

.20 x .40 (0.5 x 1.0)

4.0 (1.8)

VA
RATING

CATALOG NUMBER

A

50

AE020050

3.28 (8.3)

3.00 (7.6)

2.78 (7.0)

75

AE020075

3.28 (8.3)

3.00 (7.6)

3.09 (7.8)

100

AE020100

3.28 (8.3)

3.41 (8.6)

3.41 (8.6)

2.53 (6.4)

3.13 (7.9)

.20 x .40 (0.5 x 1.0)

4.0 (1.8)

150

AE020150

4.03 (10.2)

3.75 (9.5)

3.41 (8.6)

3.28 (8.3)

3.13 (7.9)

.20 x .40 (0.5 x 1.0)

7.0 (3.2)

250

AE020250

4.38 (11.1)

4.50 (11.4)

4.03 (10.2)

3.75 (9.5)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

9.0 (4.1)

300

AE020300

5.13 (13.0)

4.50 (11.4)

4.97 (12.6)

3.88 (9.8)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

11.0 (5.0)

350

AE020350

5.25 (13.3)

4.50 (11.4)

4.97 (12.6)

4.16 (10.5)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

13.0 (5.9)

500

AE020500

6.31 (16.0)

5.25 (13.3)

4.97 (12.6)

5.25 (13.3)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

19.0 (8.6)

750

AE020750

6.81 (17.3)

5.25 (13.3)

4.97 (12.6)

5.75 (14.6)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

27.0 (12.2)

E

MOUNTING SLOT
F

APPROX.
SHIPPING WT

GROUP III
240 x 480 PRIMARY VOLTS—24 SECONDARY VOLTS –– 1Ø, 50/60 Hz

70

VA
RATING

CATALOG NUMBER

A

50

AE030050

2.69 (6.8)

APPROX. DIMENSIONS INCHES (CM.)
B
C
D

3.00 (7.6)

2.81 (7.1)

2.03 (5.1)

2.53 (6.4)

.20 x .40 (0.5 x 1.0)

2.5 (1.1)

75

AE030075

3.22 (8.1)

3.00 (7.6)

2.81 (7.1)

2.53 (6.4)

2.53 (6.4)

.20 x .40 (0.5 x 1.0)

3.5 (1.6)

100

AE030100

3.28 (8.3)

3.41 (8.6)

3.09 (7.8)

2.41 (6.1)

2.81 (7.1)

.20 x .40 (0.5 x 1.0)

4.0 (1.8)

150

AE030150

3.88 (9.8)

3.84 (9.7)

3.41 (8.6)

2.97 (7.5)

3.13 (7.9)

.20 x .40 (0.5 x 1.0)

6.5 (2.9)

250

AE030250

4.13 (10.4)

4.50 (11.4)

3.84 (9.7)

2.94 (7.4)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

9.2 (4.2)

350

AE030350

5.00 (12.7)

4.50 (11.4)

3.84 (9.7)

3.78 (9.6)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

12.7 (5.8)

500

AE030500

5.53 (14.0)

5.25 (13.3)

4.66 (11.8)

4.16 (10.5)

4.34 (11.0)

.31 x .69 (0.8 X 1.7)

19.0 (8.6)

750

AE030750

6.81 (17.3)

5.25 (13.3)

4.66 (11.8)

5.75 (14.6)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

26.0 (11.8)

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

5

TA SERIES
AE/CE
SERIES
OPEN CORE
INDUSTRIAL
& COIL INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

GROUP VI
240 x 480, 230 x 460, 220 x 440 PRIMARY VOLTS —120/115/110 SECONDARY VOLTS –– 1Ø, 50/60 Hz
APPROX. DIMENSIONS INCHES (CM.)
B
C
D

VA
RATING

CATALOG NUMBER

A

50

AE060050

2.69 (6.8)

3.00 (7.6)

2.81 (7.1)

C

E

MOUNTING SLOT
F

APPROX.
SHIPPING WT

2.03 (5.1)

2.53 (6.4)

.20 x .40 (0.5 x 1.0)

2.5 (1.1)

75

AE060075

3.22 (8.1)

3.00 (7.6)

2.81 (7.1)

2.53 (6.4)

2.53 (6.4)

.20 x .40 (0.5 x 1.0)

3.5 (1.6)

100

AE060100

3.28 (8.3)

3.41 (8.6)

3.09 (7.8)

2.41 (6.1)

2.81 (7.1)

.20 x .40 (0.5 x 1.0)

4.0 (1.8)

150

AE060150

3.88 (9.8)

3.84 (9.7)

3.41 (8.6)

2.97 (7.5)

3.13 (7.5)

.20 x .40 (0.5 x 1.0)

6.5 (2.9)

250

AE060250

4.13 (10.4)

4.50 (11.4)

3.84 (9.7)

2.94 (7.4)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

9.2 (4.2)

350

AE060350

5.00 (12.7)

4.50 (11.4)

3.84 (9.7)

3.78 (9.6)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

12.7 (5.8)

500

AE060500

5.53 (14.0)

5.25 (13.3)

4.66 (11.8)

4.16 (10.5)

4.34 (11.0)

.31 x .69 (0.8 X 1.7)

19.0 (8.6)

750

AE060750

6.81 (17.3)

5.25 (13.3)

4.66 (11.8)

5.75 (14.6)

4.31 (10.9)

.31 x .69 (0.8 X 1.7)

26.0 (11.8)

E

MOUNTING SLOT
F

APPROX.
SHIPPING WT

GROUP VII
208/230/460 PRIMARY VOLTS –– 115 SECONDARY VOLTS –– 1Ø, 50/60 Hz
VA
RATING

CATALOG NUMBER

A

APPROX. DIMENSIONS INCHES (CM.)
B
C
D

50

AE070050

2.84 (7.2)

3.00 (7.6)

2.81 (7.1)

2.16 (5.4)

2.53 (6.4)

.20 x .40 (0.5 x 1.0)

2.6 (1.2)

100

AE070100

3.41 (6.6)

3.41 (8.6)

3.09 (7.8)

2.69 (6.8)

2.81 (7.1)

.20 x .40 (0.5 x 1.0)

4.2 (1.9)

150

AE070150

3.88 (9.8)

3.75 (9.5)

3.41 (8.6)

3.09 (7.8)

3.09 (7.8)

.20 x .40 (0.5 x 1.0)

6.7 (3.1)

250

AE070250

4.16 (10.5)

4.50 (11.4)

4.03 (10.2)

3.28 (8.3)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

9.5 (4.3)

350

AE070350

5.19 (13.1)

4.50 (11.4)

4.03 (10.2)

4.38 (11.1)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

13.4 (6.1)

500

AE070500

5.88 (14.9)

5.25 (13.3)

4.66 (11.8)

4.78 (12.1)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

19.0 (8.6)

750

AE070750

6.81 (17.3)

5.25 (13.3)

4.66 (11.8)

5.75 (14.6)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

27.0 (12.2)

E

MOUNTING SLOT
F

APPROX.
SHIPPING WT

GROUP XII
230/460/575 PRIMARY VOLTS –– 95/115 SECONDARY VOLTS –– 1Ø, 50/60 Hz
VA
RATING

CATALOG NUMBER

A

APPROX. DIMENSIONS INCHES (CM.)
B
C
D

50

AE120050

2.88 (7.3)

3.00 (7.6)

2.81 (7.1)

2.19 (5.5)

2.53 (6.4)

.20 x .40 (0.5 x 1.0)

2.6 (1.2)

100

AE120100

3.59 (9.1)

3.41 (8.6)

3.09 (7.8)

2.88 (7.3)

2.81 (7.1)

.20 x .40 (0.5 x 1.0)

4.2 (1.9)

150

AE120150

3.94 (10.0)

3.78 (9.6)

3.41 (8.6)

3.28 (8.3)

3.09 (7.8)

.20 x .40 (0.5 x 1.0)

6.8 (3.1)

250

AE120250

4.16 (10.5)

4.50 (11.4)

4.03 (10.2)

3.22 (8.1)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

9.5 (4.3)

350

AE120350

5.00 (12.7)

4.50 (11.4)

4.03 (10.2)

3.69 (9.3)

4.31 (10.9)

.20 x .40 (0.5 x 1.0)

13.2 (6.0)

500

AE120500

5.84 (14.8)

5.25 (13.3)

4.66 (11.8)

4.66 (11.8)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

19.2 (8.7)

750

AE120750

6.81 (17.3)

5.25 (13.3)

4.66 (11.8)

5.81 (14.7)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

27.0 (12.2)

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

71

5

SECTION

TA SERIES
AE/CE
SERIES
OPEN CORE
INDUSTRIAL
& COIL INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

SELECTION CHARTS

CE SERIES

GROUP IC

C

120 x 240 PRIMARY VOLTS –– 24 SECONDARY VOLTS –– 1Ø, 50/60 Hz
VA
RATING

CATALOG NUMBER

A

APPROX. DIMENSIONS INCHES (CM.)
B
C
D

E

MOUNTING SLOT
F

APPROX.
SHIPPING WT

50

CE010050

2.69 (6.8)

3.00 (7.6)

2.81 (7.1)

2.25 (5.7)

2.56 (6.5)

.20 x .40 (0.5 x 1.0)

2.5 (1.2)

75

CE010075

3.22 (8.1)

3.41 (8.6)

2.81 (7.1)

2.25 (5.7)

2.88 (7.3)

.20 x .40 (0.5 x 1.0)

3.5 (1.6)

100

CE010100

3.28 (8.3)

3.75 (9.5)

3.09 (7.8)

2.53 (6.4)

3.13 (7.9)

.20 x .40 (0.5 x 1.0)

4.2 (1.9)

150

CE010150

3.88 (9.8)

4.50 (11.4)

3.41 (8.6)

2.53 (6.4)

3.84 (9.7)

.20 x .40 (0.5 x 1.0)

6.6 (3.0)

250

CE010250

4.13 (10.4)

4.50 (11.4)

4.03 (10.2)

3.22 (8.1)

3.84 (9.7)

.20 x .40 (0.5 x 1.0)

9.4 (4.3)

350

CE010350

5.00 (12.7)

5.25 (13.3)

4.03 (10.2)

3.75 (9.5)

4.50 (11.4)

.31 x .69 (0.8 X 1.7)

13.0 (5.9)

500

CE010500

5.50 (13.9)

5.25 (13.3)

4.66 (11.8)

4.28 (10.8)

4.50 (11.4)

.31 x .69 (0.8 X 1.7)

19.1 (8.7)

750

CE010750

7.03 (17.8)

5.25 (13.3)

4.66 (11.8)

5.75 (14.6)

4.50 (11.4)

.31 x .69 (0.8 X 1.7)

26.6 (12.1)

GROUP IIC
200/220/440, 208/230/460, 240/480 PRIMARY VOLTS –– 23/110, 24/115, 25/120 SECONDARY VOLTS –– 1Ø, 50/60 Hz
VA
RATING

CATALOG NUMBER

A

APPROX. DIMENSIONS INCHES (CM.)
B
C
D

E

MOUNTING SLOT
F

APPROX.
SHIPPING WT

50

CE020050

3.28 (8.3)

3.28 (8.3)

2.81 (7.1)

2.25 (5.7)

2.81 (7.1)

.20 x .40 (0.5 x 1.0)

2.7 (1.2)

100

CE020100

4.03 (10.2)

3.75 (9.5)

3.13 (7.9)

3.22 (8.1)

3.16 (8.0)

.20 x .40 (0.5 x 1.0)

4.3 (1.9)

150

CE020150

4.03 (10.2)

4.50 (11.4)

3.41 (8.6)

2.81 (7.1)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

6.8 (3.0)

250

CE020250

4.78 (12.1)

4.50 (11.4)

4.03 (10.2)

4.06 (10.3)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

9.7 (4.4)

350

CE020350

5.53 (14.0)

5.25 (13.3)

4.03 (10.2)

4.28 (10.8)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

13.5 (6.1)

500

CE020500

7.25 (18.4)

5.25 (13.3)

4.69 (11.9)

6.00 (15.2)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

19.6 (8.9)

750

CE020750

6.81 (17.3)

5.28 (13.4)

4.69 (11.9)

5.75 (14.6)

4.44 (11.2)

.31 x .69 (0.8 X 1.7)

27.0 (12.2)

E

MOUNTING SLOT
F

APPROX.
SHIPPING WT

GROUP IIIC
240 x 480 PRIMARY VOLTS –– 24 SECONDARY VOLTS –– 1Ø, 50/60 Hz
VA
RATING

72

CATALOG NUMBER

A

APPROX. DIMENSIONS INCHES (CM.)
B
C
D

50

CE030050

3.00 (7.6)

3.00 (7.6)

2.81 (7.1)

2.25 (5.7)

2.53 (6.4)

.20 x .40 (0.5 x 1.0)

2.5 (1.1)

75

CE030075

3.28 (8.3)

3.28 (8.3)

2.81 (7.1)

2.25 (5.7)

2.81 (7.1)

.20 x .40 (0.5 x 1.0)

3.5 (1.6)

100

CE030100

3.28 (8.3)

3.75 (9.5)

3.09 (7.8)

2.53 (6.4)

3.13 (7.9)

.20 x .40 (0.5 x 1.0)

4.0 (1.8)

150

CE030150

3.88 (9.8)

4.50 (11.4)

3.47 (8.8)

2.53 (6.4)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

6.5 (2.9)

250

CE030250

4.13 (10.4)

4.50 (11.4)

4.03 (10.2)

3.22 (8.1)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

9.2 (4.2)

350

CE030350

5.00 (12.7)

5.25 (13.3)

4.03 (10.2)

3.75 (9.5)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

12.7 (5.8)

500

CE030500

5.53 (14.0)

5.25 (13.3)

4.66 (11.8)

4.28 (10.8)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

19.0 (8.6)

750

CE030750

7.03 (17.8)

5.25 (13.3)

4.66 (11.8)

5.41 (13.7)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

26.0 (11.8)

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

5

TA SERIES
AE/CE
SERIES
OPEN CORE
INDUSTRIAL
& COIL INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

GROUP IVC

C

380/400/415 PRIMARY VOLTS –– 110/220 SECONDARY VOLTS –– 1Ø, 50/60 Hz
APPROX. DIMENSIONS INCHES (CM.)
B
C
D

E

MOUNTING SLOT
F

APPROX.
SHIPPING WT

2.53 (6.4)

2.53 (6.4)

.20 x .40 (0.5 x 1.0)

2.6 (1.2)

3.22 (8.1)

2.53 (6.4)

3.13 (8.0)

.20 x .40 (0.5 x 1.0)

4.3 (1.9)

4.34 (11.0)

3.41 (8.6)

2.53 (6.4)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

6.7 (3.0)

4.50 (11.4)

4.22 (10.7)

3.22 (8.1)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

9.4 (4.3)

4.50 (11.4)

4.22 (10.7)

4.06 (10.3)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

13.0 (5.9)

VA
RATING

CATALOG NUMBER

A

50

CE040050

3.53 (8.9)

3.00 (7.6)

2.81 (7.1)

100

CE040100

3.53 (8.9)

3.75 (9.5)

150

CE040150

3.53 (8.9)

250

CE040250

4.03 (10.2)

350

CE040350

4.91 (12.4)

500

CE040500

6.00 (15.2)

5.25 (13.3)

4.69 (11.9)

4.78 (12.1)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

18.8 (8.5)

750

CE040750

6.81 (17.3)

5.25 (13.3)

4.69 (11.9)

5.75 (14.6)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

26.0 (11.8)

E

MOUNTING SLOT
F

APPROX.
SHIPPING WT

GROUP VC
208, 220/380/440, 230/400/460, 240/416/480 PRIMARY VOLTS ––
85/100/110, 91/110/120, 95/115/125, 99/120/130 SECONDARY VOLTS –– 1Ø, 50/60 Hz
APPROX. DIMENSIONS INCHES (CM.)
B
C
D

VA
RATING

CATALOG NUMBER

A

50

CE050050

4.03 (10.2)

3.41 (8.6)

3.09 (7.8)

2.47 (6.2)

2.81 (7.1)

.20 x .40 (0.5 x 1.0)

2.7 (1.2)

150

CE050150

3.88 (9.8)

4.34 (11.0)

3.41 (8.6)

2.88 (7.3)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

6.7 (3.0)

250

CE050250

5.13 (13.0)

4.50 (11.4)

4.03 (10.2)

4.38 (11.1)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

9.5 (4.3)

350

CE050350

5.91 (15.0)

5.25 (13.3)

4.03 (10.2)

4.78 (12.1)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

13.3 (6.0)

500

CE050500

5.91 (15.0)

5.25 (13.3)

4.66 (11.8)

4.63 (11.7)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

19.0 (8.6)

750

CE050750

7.09 (18.0)

5.25 (13.3)

4.66 (11.1)

5.81 (14.7)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

27.0 (12.2)

GROUP VIC
240 x 480, 230 x 460, 220 x 440 PRIMARY VOLTS ––120/115/110 SECONDARY VOLTS –– 1Ø, 50/60 Hz
APPROX. DIMENSIONS INCHES (CM.)
B
C
D

VA
RATING

CATALOG NUMBER

A

50

CE060050

3.41 (8.6)

3.00 (7.6)

2.81 (7.1)

E

MOUNTING SLOT
F

APPROX.
SHIPPING WT

2.53 (6.4)

2.53 (6.4)

.20 x .40 (0.5 x 1.0)

2.6 (1.2)

75

CE060075

3.41 (8.6)

3.28 (8.3)

2.81 (7.1)

2.53 (6.4)

2.81 (7.1)

.20 x .40 (0.5 x 1.0)

3.6 (1.6)

100

CE060100

3.41 (8.6)

3.75 (9.5)

3.09 (7.8)

2.53 (6.4)

3.13 (7.9)

.20 x .40 (0.5 x 1.0)

4.3 (1.9)

150

CE060150

3.88 (9.8)

4.50 (11.4)

3.47 (8.8)

2.53 (6.4)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

6.7 (3.0)

250

CE060250

4.13 (10.4)

4.50 (11.4)

4.03 (10.2)

3.22 (8.1)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

9.4 (4.3)

300

CE060300

4.53 (11.5)

4.50 (11.4)

4.03 (10.2)

3.75 (9.5)

3.75 (9.5)

.20 x .40 (0.5 x 1.0)

10.9 (4.9)

350

CE060350

5.00 (12.7)

5.25 (13.3)

4.03 (10.2)

3.75 (9.5)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

13.0 (5.9)

500

CE060500

6.00 (15.2)

5.25 (13.3)

4.66 (11.8)

4.78 (12.1)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

18.8 (8.5)

750

CE060750

6.81 (17.3)

5.25 (13.3)

4.66 (11.8)

5.75 (14.6)

4.38 (11.1)

.31 x .69 (0.8 X 1.7)

26.0 (11.8)

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

73

SECTION

5

TA SERIES
AE/CE
INDUSTRIAL
OPEN CORE &CONTROL
COIL INDUSTRIAL
TRANSFORMERS
CONTROL TRANSFORMERS

FUSE SIZING CHARTS
PRIMARY FUSE SIZING CHARTS
RECOMMENDED RATING FOR CURRENT LIMITING CLASS CC FUSES
VA
50

120 V
1.2

208 V
0.6

230 V
0.6

240 V
0.6

277 V
0.6

380 V
0.3

416 V
0.3

440 V
0.3

460 V
0.3

480 V
0.3

550 V
0.3

600 V
0.3

75

1.9

1.0

1.0

1.0

0.8

0.6

0.6

0.6

0.5

0.5

0.4

0.4

100

2.5

1.5

1.3

1.3

1.0

0.8

0.8

0.6

0.6

0.6

0.6

0.5

150

3.8

2.0

2.0

1.9

1.5

1.2

1.2

1.0

1.0

1.0

0.8

0.8

250

3.5

3.5

3.5

3.0

3.0

2.0

1.8

1.8

1.5

1.5

1.4

1.2

300

4.0

4.0

4.0

3.5

3.0

2.5

2.5

2.0

2.0

1.9

1.5

1.5

350

5.0

5.0

4.5

4.0

4.0

2.5

2.5

2.5

2.0

2.0

1.9

1.8

500

7.0

4.0

3.5

3.5

5.5

4.0

3.5

3.5

3.5

3.0

3.0

2.5

750

10.0

6.0

5.5

5.0

4.5

6.0

5.5

5.0

5.0

5.0

4.0

4.0

NOTE: Bold lines indicate changes in the percent of rated current used to calculate fuse sizes in accordance with article 450 of the NEC.

SECONDARY FUSE SIZING CHARTS
RECOMMENDED RATING FOR CURRENT LIMITING MIDGET FUSES
VA
50 VA

24 V
3.2

85 V
0.9

91 V
0.9

99 V
0.8

100 V
0.8

110 V
0.7

115 V
0.7

120 V
0.6

125 V
0.6

130 V
0.6

75 VA

5.0

1.4

1.2

1.2

1.2

1.0

1.0

1.0

1.0

0.8

100 VA

6.0

1.5

1.5

1.5

1.5

1.5

1.5

1.2

1.2

1.2

150 VA

10.0

2.5

2.5

2.5

2.5

2.0

2.0

2.0

2.0

1.5

250 VA

12.0

4.5

4.5

4.0

4.0

3.5

3.5

3.0

3.0

3.0

300 VA

15.0

5.5

5.5

5.0

5.0

4.5

4.5

4.0

4.0

3.5

350 VA

20.0

6.5

6.0

5.5

5.5

5.0

5.0

4.5

4.5

4.5

500 VA

25.0

9.0

9.0

8.0

8.0

7.0

7.0

6.0

6.0

6.0

750 VA

40.0

12.0

12.0

12.0

12.0

10.0

10.0

10.0

10.0

9.0

CONNECTION DETAILS FOR AE05 & CE05
H1-H2

H1-H3

H1-H4

X1-X2
85

100

110

220

380

440

91

110

120

230

400

460

95

115

125

240

416

480

99

120

130

208

74

X1-X3

X1-X4

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

5

SECTION

TA SERIES
AE/CE
INDUSTRIAL
OPEN CORE &CONTROL
COIL INDUSTRIAL
TRANSFORMERS
CONTROL TRANSFORMERS

FUSE KITS & ACCESSORIES
CATALOG NUMBER

VA

DESCRIPTION

APPROX. SHIPPING WT. (Lbs./ Kg.)

PL79920

50-750

Fuse Kit: Primary Fuse Block EIC Series
(2 Class CC Blocks)

1.0 (0.5)

PL79921

150-750

Fuse Kit: Primary & Secondary Fuse Block EIC Series
(2 Class CC and 1 Midget Blocks)

1.0 (0.5)

PL79922

50-750

Fuse Kit: Primary Fuse Block EIC Series
CE Listed w/ Covers (2 Class CC Blocks)

1.0 (0.5)

Fuse Kit: Primary & Secondary Fuse Block EIC Series
CE Listed w/ Covers (2 Class CC and 1 Midget Blocks)

1.0 (0.5)

Fuse Kit: Secondary Fuse 1/4” x 1-1/4” w/ARM

1.0 (0.5)

PL79923

150-750

PL79924
PL79925

50 – 350

Cover: Small Terminal Covers (Qty. 2)

1.0 (0.5)

PL79926

500 & 750

Cover: Large Terminal Covers (Qty. 2)

1.0 (0.5)

Cover: Fuse Block Covers (Qty. 1)

1.0 (0.5)

PL79928

50 – 350

Link: Small Jumper Links (Qty. 2)

1.0 (0.5)

PL79929

500 & 750

Link: Large Jumper Links (Qty. 2)

1.0 (0.5)

PL79930

50 – 350

Fuse Kit: Secondary Fuse Midget w/ARM

1.0 (0.5)

PL79931

500 & 750

Fuse Kit: Secondary Fuse Midget w/ARM

1.0 (0.5)

PL79927

AE & CE Series Wiring Diagrams
WIRING FOR AE01 & CE01

WIRING FOR AE02 & CE02
H1

H1 H3 H2 H4
H1

H2

H3

120V

240V

H1 H3
H2

H3

240
230
220

H2 H4
H4

208
200

WIRING FOR AE03 & CE03

H4

480
460
440

480V
460
440

H1

240V
230
220

H1 H3 H2 H4
H1

WIRING FOR CE04

H1 H3

H4

H3

415
400

H2 H4

H2

H3

H2

H4

380

25
24
23
120
115
110

24V
X2

X1
X3

WIRING FOR AE05 & CE05
H1

H2

H3

480V
460
416V 440
400
380

240V
230
220
208

WIRING FOR AE06 & CE06
480V
460
440
H1

H1 H3
H2

H3

X3

X2

99V
95
91
85

230V

X2

X2

H2

240V
230
220

H3

H2

115V

X2

X1

X1

X3

X1

H4

H3

480V
460
440

460V

H4

X1
X1

220V

H4

H2 H4

120V
115
110

X3
X4 X2 X3

WIRING FOR AE12
H1

H1

X3 X1

110V

X1

WIRING FOR AE07

240V
230
220

H1 H3 H2 H4

X2

X4 X2

X2

X1

208V

120V
115
130V 110
125 100
120
110

X4

X2

H4

X4

24V

600V
575
550

100V
95
90
120V
115
110

X1

AE & CE Series Dimensional Drawings
B
E

F

A
D

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

C

75

SECTION

5

®
FINGER/GUARD
TA
SERIES OPEN CORE
INDUSTRIAL
& COIL INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

FINGER/GUARD® Industrial Control Transformers
The Acme FINGER/GUARD® line of
Touch-Protected Industrial Control
Transformers offers the most advanced
and versatile design concepts
available to the marketplace today.

Easy access front opening in
terminal makes for fast wire
connections with one screw

Durable molded plastic
terminal is designed for
protection against contact
with live components

They are designed to meet Acme’s rigid
standards for mechanical durability as
well as surpass Agency and Industry
electrical standards. The FINGER/
GUARD® line is designed for all control
applications and features integrally
installed, durable molded plastic
terminations designed to protect against
contact with live components. No slipon plastic covers to be broken, lost or
misplaced.
All F INGER/GUARD® products use
copper windings, high- permeability
silicon steel cores and 130 degree
C (Class B) insulation. All FINGER/
GUARD® products meet or exceed
ANSI, IEC and NEMA standards.
They are third party witness tested
and are UL Listed (File E79947), CSA
Certified (File 7357) and CE Marked
(to EN60742)... ON ALL SIZES. The
product is suitable for both 50 and 60
Hertz applications and is available in
sizes ranging from 50 VA to 3000 VA.

FEATURES
Constructed with high quality silicon
steel lamination to minimize core
losses and increase efficiency.
Designs incorporate precision wound
coils for improved regulation.
Copper windings on all groups.
50 VA through 3000 VA sizes, 50/60 Hz.
130°C (Class B) Insulation 80°C
temperature rise.
Voltage regulation exceeds NEMA
requirements.
UL Listed, CSA Certified and
CE Marked.
Attractive finish, nameplate, and
design features enhance the end
product.

Easy to read nameplate
clearly identifies
important data

Wide range of primary and
secondary voltages

CE Marking
(Conformité Européene)
The CE Marking, standing for Conformité Européene, is a European Mark of
conformity indicating that a product or system to which it is applied, complies
with European law (Directives) regulating a necessary level of protection in
Europe with respect to safety, health, environmental and consumer protection;
however, it is not intended as a guarantee of quality for the consumer. The CE
Marking must be applied to products being placed on the European market.
The CE Marking does allow a product to be moved freely within the internal
market of the European Union.
The Directives that apply to Control or Power Distribution Transformers are:
•

Low Voltage Directive, 73/23/EEC effective January 1, 1997

•
•

Electromagnetic Compatibility (EMC) Directive, 89/336/EEC effective
January 1, 1996

The stringent testing required to obtain a third party certification mark in many
cases is significantly more rigid than domestic requirements. This ensures that
not only the Acme FINGER/GUARD® product, but all of
our CE Marked products are designed to meet a higher
level of safety standards than non-CE Marked products.
All Acme transformers are manufactured in a facility
certified by Underwriters Laboratories to ISO-9001.

Ten-year limited warranty.
Smaller, lighter weight design.

76

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

5

®
FINGER/GUARD
TA
SERIES OPEN CORE
INDUSTRIAL
& COIL INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

SELECTION CHARTS
GROUP A
120 X 240 PRIMARY VOLTS—24 SECONDARY VOLTS—50/60 Hz
CATALOG
NO.

VA
RATING

EUROPEAN*
RATING

APPROX. DIMENSIONS INCHES (CM.)
A

B

C

D

F

APPROX.
SHIP WEIGHT LBS. (Kg.)

.31 x .50 (0.8 x 1.3)

26 (11.8)

E

FS150
FS175
FS1100

Reference Group IC (CE01):
CE Series Industrial Control Transformers
50-750 VA
See Pg 72

FS1150
FS1250
FS1350
FS1500
FS1750
FS11000

1000

870

4.76 (12.1)

6.75 (17.1)

6.03 (15.3)

5.75 (14.6)

2.86 (7.3)

GROUP B
240 X 480, 230 X 460, 220 X 440 PRIMARY VOLTS—120/115/110 SECONDARY VOLTS—50/60 Hz
CATALOG
NO.

VA
RATING

EUROPEAN*
RATING

APPROX. DIMENSIONS INCHES (CM.)
A

B

C

D

E

F

APPROX.
SHIP WEIGHT LBS. (Kg.)

FS250
FS275
FS2100

Reference Group VIC (CE06):
CE Series Industrial Control Transformers
50-750 VA
See Pg 73

FS2150
FS2250
FS2300
FS2350
FS2500
FS2750
FS21000

1000

870

4.76 (12.1)

6.75 (17.1)

6.03 (15.3)

5.75 (14.6)

2.86 (7.3)

.31 x .50 (0.8 x 1.3)

26 (11.8)

FS21500

1500

1290

6.01 (15.3)

6.75 (17.1)

6.03 (15.3)

5.75 (14.6)

4.13 (10.5)

.31 x .50 (0.8 x 1.3)

38 (17.2)

FS22000

2000

1680

6.51 (16.5)

6.75 (17.1)

6.03 (15.3)

5.75 (14.6)

4.63 (11.8)

.31 x .50 (0.8 x 1.3)

44 (20.0)

FS23000

3000

2465

7.44 (18.9)

7.50 (19.1)

6.68 (17.0)

6.50 (16.5)

6.47 (16.4)

.41 x .81 (1.0 x 2.1)

60 (27.2)

GROUP C
240/416/480/600; 230/400/460/575; 220/380/440/550; 208/500 PRIMARY VOLTS
99/120/130; 95/115/125; 91/110/120; 85/100/110 SECONDARY VOLTS—50/60 Hz
CATALOG
NO.

APPROX. DIMENSIONS INCHES (CM.)

VA
RATING

EUROPEAN*
RATING

A

B

C

D

E

F

APPROX.
SHIP WEIGHT LBS. (Kg.)

FS350

50

50

2.59 (6.6)

3.75 (9.5)

3.64 (9.2)

3.13 (8.0)

1.70 (4.3)

.22 x .50 (0.6 x 1.3)

5 (2.3)

FS3150

150

150

3.31 (8.4)

4.50 (11.4)

4.15 (10.5)

3.75 (9.5)

2.18 (5.5)

.22 x .50 (0.6 x 1.3)

8 (3.6)

FS3250

250

250

3.61 (9.2)

4.88 (12.4)

4.46 (11.3)

4.06 (10.3)

2.33 (5.9)

.22 x .50 (0.6 x 1.3)

11 (5.0)

FS3350

350

345

4.69 (11.9)

4.88 (12.4)

4.46 (11.3)

4.06 (10.3)

3.48 (8.8)

.22 x .50 (0.6 x 1.3)

17 (7.7)

FS3500

500

490

4.39 (11.2)

6.75 (17.1)

6.03 (15.3)

5.75 (14.6)

2.48 (6.3)

.31 x .50 (0.8 x 1.3)

22 (10.0)

FS3750

750

720

5.18 (13.2)

6.75 (17.1)

6.03 (15.3)

5.75 (14.6)

3.31 (8.4)

.31 x .50 (0.8 x 1.3)

30 (13.6)

FS31000

1000

870

6.18 (15.7)

6.75 (17.1)

6.03 (15.3)

5.75 (14.6)

4.30 (10.9)

.31 x .50 (0.8 x 1.3)

39 (17.7)

FS31500

1500

1290

6.26 (15.9)

7.50 (19.1)

6.68 (17.0)

6.50 (16.5)

5.26 (13.4)

.41 x .81 (1.0 x 2.1)

51 (23.1)

FS32000

2000

1680

7.76 (19.7)

7.50 (19.1)

7.70 (19.6)

6.50 (16.5)

6.75 (17.1)

.41 x .81 (1.0 x 2.1)

66 (29.9)

FS33000

3000

2465

8.88 (22.6)

11.92 (30.3)

8.83 (22.4)

6.75 (17.1)

5.75 (14.6)

.41 x .81 (1.0 x 2.1)

70 (31.8)

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

77

SECTION

5

®
FINGER/GUARD
TA
SERIES OPEN CORE
INDUSTRIAL
& COIL INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

FUSE KITS–FOR FINGER/GUARD INDUSTRIAL CONTROL TRANSFORMERS
®

CATALOG NO.

DESCRIPTION

PL79905

PRIMARY FUSE KIT FOR CLASS CC FUSES

PL79906

PRIMARY & SECONDARY FUSE KIT FOR CLASS CC PRIMARY FUSES & MIDGET SECONDARY FUSE

PL79907

PRIMARY FUSE KIT FOR MIDGET FUSES

PL79908

PRIMARY & SECONDARY FUSE KIT FOR MIDGET FUSES

* EN60742 requires transformers to pass the temperature rise limits of a 130° C (Class B) insulation system at 6% above the rated supply voltage.

CONNECTION DETAILS FOR GROUP C
CONNECT TO LINE FOR RESPECTIVE VOLTAGE
H1-H2
H1-H3
H1-H4
H1-H5

X1-X2

OUTPUT VOLTS
X1-X3

X1-X4

208

–

–

500

85

100

110

220

380

440

550

91

110

120

230

400

460

575

95

115

125

240

416

480

600

99

120

130

PRIMARY FUSE SIZING CHARTS
RECOMMENDED RATING FOR CURRENT LIMITING CLASS CC FUSES
VA
50

120 V
1.2

208 V
0.6

230 V
0.6

240 V
0.6

277 V
0.6

380 V
0.3

416 V
0.3

440 V
0.3

460 V
0.3

480 V
0.3

550 V
0.3

600 V
0.3

75

1.9

1.0

1.0

1.0

0.8

0.6

0.6

0.6

0.5

0.5

0.4

0.4

100

2.5

1.5

1.3

1.3

1.0

0.8

0.8

0.6

0.6

0.6

0.6

0.5

150

3.8

2.0

2.0

1.9

1.5

1.2

1.2

1.0

1.0

1.0

0.8

0.8

250

3.5

3.5

3.5

3.0

3.0

2.0

1.8

1.8

1.5

1.5

1.4

1.2

300

4.0

4.0

4.0

3.5

3.0

2.5

2.5

2.0

2.0

1.9

1.5

1.5

350

5.0

5.0

4.5

4.0

4.0

2.5

2.5

2.5

2.0

2.0

1.9

1.8

500

7.0

4.0

3.5

3.5

5.5

4.0

3.5

3.5

3.5

3.0

3.0

2.5

750

10.0

6.0

5.5

5.0

4.5

6.0

5.5

5.0

5.0

5.0

4.0

4.0

1000

15.0

8.0

7.0

7.0

6.0

4.5

4.0

3.5

3.5

3.5

5.5

5.0

1500

20.0

12.0

12.0

12.0

10.0

7.0

6.0

6.0

5.5

5.5

5.0

4.5

2000

25.0

12.0

15.0

15.0

12.0

9.0

8.0

8.0

7.5

7.0

6.0

6.0

3000

30.0

20.0

20.0

20.0

15.0

15.0

12.0

12.0

12.0

12.0

10.0

9.0

NOTE: Bold lines indicate changes in the percent of rated current used to calculate fuse sizes in accordance with article 450 of the NEC.

SECONDARY FUSE SIZING CHARTS
RECOMMENDED RATING FOR CURRENT LIMITING MIDGET FUSES

78

VA
50 VA

24 V
3.2

85 V
0.9

91 V
0.9

99 V
0.8

100 V
0.8

110 V
0.7

115 V
0.7

120 V
0.6

125 V
0.6

130 V
0.6

75 VA

5.0

1.4

1.2

1.2

1.2

1.0

1.0

1.0

1.0

0.8

100 VA

6.0

1.5

1.5

1.5

1.5

1.5

1.5

1.2

1.2

1.2

150 VA

10.0

2.5

2.5

2.5

2.5

2.0

2.0

2.0

2.0

1.5

250 VA

12.0

4.5

4.5

4.0

4.0

3.5

3.5

3.0

3.0

3.0

300 VA

15.0

5.5

5.5

5.0

5.0

4.5

4.5

4.0

4.0

3.5

350 VA

20.0

6.5

6.0

5.5

5.5

5.0

5.0

4.5

4.5

4.5

500 VA

25.0

9.0

9.0

8.0

8.0

7.0

7.0

6.0

6.0

6.0

750 VA

40.0

12.0

12.0

12.0

12.0

10.0

10.0

10.0

10.0

9.0

1000 VA

50.0

15.0

15.0

12.0

12.0

12.0

12.0

12.0

12.0

12.0

1500 VA

—

25.0

20.0

20.0

20.0

20.0

20.0

15.0

15.0

15.0

2000 VA

—

30.0

30.0

25.0

25.0

25.0

25.0

20.0

20.0

20.0

3000 VA

—

40.0

40.0

40.0

40.0

35.0

35.0

30.0

30.0

30.0

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

5

SECTION

®
FINGER/GUARD
TA
SERIES OPEN CORE
INDUSTRIAL
& COIL INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

FINGER/GUARD® Wiring Diagrams
GROUP B

GROUP A

H1 H3 H2 H4
H1

480V
460
440

120V

240V

H1 H3
H2

H3

GROUP C
240V
230
220

H1 H3 H2 H4

H2 H4

H1

H4

H1 H3
H2

H3

H2 H4
H4

120V
115
110

24V
X2

X2

X1

X1

FINGER/GUARD® Dimensional Drawings
50 VA Thru 2 kVA
A

E

F

D

C

B

3 kVA

A
C
F

D
B
E

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

79

SECTION

5

®
FINGER/GUARD
TA
SERIES OPEN CORE
INDUSTRIAL
& COIL INDUSTRIAL
CONTROL
CONTROL
TRANSFORMERS
TRANSFORMERS

NOTES

80

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

LOW VOLTAGE/
LIGHTING
TRANSFORMERS
General Purpose................................................ 84
Buck - Boost....................................................... 85
Wiring Diagrams ................................................ 86

6

SECTION

6

LOW VOLTAGE LIGHTING TRANSFORMERS & POWER SUPPLIES

Low Voltage Lighting
A greater selection for your indoor & outdoor low voltage lighting projects

Why Low Voltage?

Acme’s Low Voltage Lighting
products provide a safe, long lasting, highly reliable power source;
a perfect selection for landscape
applications as well as interior use.
Low voltage lighting is a creative
medium with unlimited application
possibilities. Low voltage lighting
benefits include:
Precision beam control
More light intensity per watt
Less radiated heat
Greater efficiency
Longer life
Safer to use
Easy installation
A high return on end-user
investment

Acme Advantages
More value

More protection

Acme low voltage transformers are available in a wide
range of options and models that are all UL listed for use
indoors or outdoors. See inside back cover for warranty
details.

A full fault current carrying Faraday Shield (except Buck–
Boost) prevents 120 volts from reaching the 12 volt side, as
required by UL-1571 and UL-1838.

More Power

The convenient “Selection Guide” on the facing page
provides you with the data you need to select the product
that best meets your requirement. Complete product
selection data, dimensions and wiring diagrams are
contained on the following pages. If you need help in
your selection, or if you have questions, just call technical
services at 1-800-334-5214.

Transformers in ratings of 100 through 1000 W; Group VI
Buck–Boost in .05 through 10 kVA.

More convenience
Groups IV, V and VI transformers have copper lead wires
for hardwiring. Circuit breakers for instant reset (except
pool and spa and Buck–Boost). No fumbling with fuses.
Generous wiring compartment, too!

82

Features & Options

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

6

LOW VOLTAGE LIGHTING TRANSFORMERS & POWER SUPPLIES

SELECTION GUIDE
TRANSFORMERS
GROUP V

GROUP VI

‘T1’
Catalog No.

Buck–Boost
‘T1’ and ‘T2”
Catalog No.

Ratings
(Watts, VA, kVA)

100
through
1000 VA

.05
through
10 kVA

Primary Input

120 Volts or
240 Volts

120 x 240
Volts

Secondary
Output

12V or 24V

12 x 24 V

Hardwired Primary

Yes

Yes

Auto Thermal Reset

No

Circuit
Breakers

No

Output
Wiring

Copper
Lead Wires

Copper
Lead Wires

UL Listed

Yes

Yes

CSA Certified

Yes

Yes

9

Faraday
Shield

Yes

No

10

Product
Warranty

10 Years

10 Years

11

UL-3R
Indoor/Outdoor
Enclosure

No

Yes

Features/Options
1

2
3

4
5

Overload
Protection:

6
7
8

Primary
Secondary

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

83

6

SECTION

LOW VOLTAGE/
VOLTAGE LIGHTING
LIGHTINGTRANSFORMERS
TRANSFORMERS& POWER SUPPLIES

Low Voltage General Purpose Transformers
FEATURES
UL Listed , CSA Certified.

UL class 180°C insulation system 115°C rise.

100, 150, 300, 600, 750, 1000 VA.

UL Type 2 enclosure.

1 Phase, 60 Hz, 120 or 240 volt input.

Keyhole slotted wall mounting brackets.

12 or 24 volt output.

Black finish.

Input Auto-Thermal reset switch.

Bottom access.

Output circuit breaker.

Two 0.875 (2.2 cm) single knockouts
each side.

Fully encapsulated core and coil.
Full fault current carrying Faraday Shield.
Flexible copper leadwire terminations.

H

Two dual 0.875 (2.2 cm) and 1.125
(2.9 cm) knockouts on bottom cover.
W

D

GROUP V
120 PRIMARY VOLTS – 12 SECONDARY VOLTS, TWO WINDINGS, 1Ø, 60 Hz
VA

HEIGHT

APPROX. DIMENSIONS
INCHES (CM.)
WIDTH

CATALOG NO.

CB RATING

CB STYLE

DEPTH

APPROX.
SHIP WEIGHT
LBS. (KG.)

100

T179600S

9.01 (22.9)

4.08 (10.4)

3.88 (9.9)

7 (3.2)

15 AMP

Push To Reset Thermal Breaker

150

T179620S

9.01 (22.9)

4.08 (10.4)

3.88 (9.9)

7 (3.2)

20 AMP

Push To Reset Thermal Breaker

300

T179621S

11.68 (29.7)

4.66 (11.8)

4.57 (11.6)

11 (5.0)

40 AMP

Push To Reset Thermal Breaker

600

T179622S

11.68 (29.7)

4.66 (11.8)

4.57 (11.6)

15 (6.8)

60 AMP

Magnetic Toggle On/Off Breaker

750

T179603S

11.68 (29.7)

4.66 (11.8)

4.57 (11.6)

18 (8.2)

75 AMP

Magnetic Toggle On/Off Breaker

1000

T179604S

11.93 (30.3)

5.41 (13.7)

5.20 (13.2)

26 (11.8)

100 AMP

Magnetic Toggle On/Off Breaker

CB RATING

CB STYLE

120 PRIMARY VOLTS – 24 SECONDARY VOLTS, TWO WINDINGS, 1Ø, 60 Hz
VA

HEIGHT

APPROX. DIMENSIONS
INCHES (CM.)
WIDTH

DEPTH

APPROX.
SHIP WEIGHT
LBS. (KG.)

CATALOG NO.

100

T179605S

9.01 (22.9)

4.08 (10.4)

3.88 (9.9)

7 (3.2)

7 AMP

Push To Reset Thermal Breaker

150

T179623S

9.01 (22.9)

4.08 (10.4)

3.88 (9.9)

7 (3.2)

10 AMP

Push To Reset Thermal Breaker

300

T179624S

11.68 (29.7)

4.66 (11.8)

4.57 (11.6)

11 (5.0)

20 AMP

Push To Reset Thermal Breaker

600

T179625S

11.68 (29.7)

4.66 (11.8)

4.57 (11.6)

15 (6.8)

40 AMP

Push To Reset Thermal Breaker

750

T179608S

11.68 (29.7)

4.66 (11.8)

4.57 (11.6)

18 (8.2)

50 AMP

Push To Reset Thermal Breaker

1000

T179609S

11.93 (30.3)

5.41 (13.7)

5.20 (13.2)

26 (11.8)

50 AMP

Magnetic Toggle On/Off Breaker

CB RATING

CB STYLE

240 PRIMARY VOLTS – 24 SECONDARY VOLTS, TWO WINDINGS, 1Ø, 60 Hz
VA

84

HEIGHT

APPROX. DIMENSIONS
INCHES (CM.)
WIDTH

DEPTH

APPROX.
SHIP WEIGHT
LBS. (KG.)

CATALOG NO.

100

T179615S

9.01 (22.9)

4.08 (10.4)

3.88 (9.9)

7 (3.2)

7 AMP

Push To Reset Thermal Breaker

150

T179629S

9.01 (22.9)

4.08 (10.4)

3.88 (9.9)

7 (3.2)

10 AMP

Push To Reset Thermal Breaker

300

T179630S

11.68 (29.7)

4.66 (11.8)

4.57 (11.6)

11 (5.0)

20 AMP

Push To Reset Thermal Breaker

600

T179631S

11.68 (29.7)

4.66 (11.8)

4.57 (11.6)

15 (6.8)

40 AMP

Push To Reset Thermal Breaker

750

T179618S

11.68 (29.7)

4.66 (11.8)

4.57 (11.6)

18 (8.2)

50 AMP

Push To Reset Thermal Breaker

1000

T179619S

11.93 (30.3)

5.41 (13.7)

5.20 (13.2)

26 (11.8)

50 AMP

Magnetic Toggle On/Off Breaker

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

6

SECTION

LOW VOLTAGE/
VOLTAGE LIGHTING
LIGHTINGTRANSFORMERS
TRANSFORMERS& POWER SUPPLIES

Buck-Boost Transformers
The No-Frills Low
Voltage Lighting
Buck-Boost Transformers offer a nofrills approach to low voltage lighting.
(See Chart Below) A typical BuckBoost application is 120 volts in and
12 volts out for low voltage lighting or
control circuitry. In most applications,
this low voltage isolation transformer
is field connected as an autotransformer. For more information on BuckBoost Transformers, refer to the next
section in this catalog.

H

D

W

GROUP VI
120 x 240 VOLT INPUT– 12/24 VOLT OUTPUT – 1Ø, 60 Hz
CATALOG
NUMBER

INSULATING
TRANSFORMER
RATING

0.05 kVA

SECONDARY MAXIMUM
CURRENT OUTPUT
12V
24V
4.16
2.08

APPROX. DIMENSIONS
INCHES (CM.)
HEIGHT
WIDTH
DEPTH
6.38 (16.2)
3.19 (8.1)
3.00 (7.6)

T181047
T181048

0.10 kVA

8.32

4.16

6.62 (16.8)

T181049

0.15 kVA

12.52

6.25

7.12 (18.1)

3.75 (9.5)

3.62 (9.2)

7 (3.2)

T181050

0.25 kVA

20.80

10.40

8.68 (22.0)

4.08 (10.4)

3.88 (9.9)

10 (4.5)

T181051

0.50 kVA

41.60

20.80

9.06 (23.0)

4.37 (11.1)

4.20 (10.7)

15 (6.8)

T181052

0.75 kVA

62.50

31.25

9.68 (24.6)

4.75 (12.1)

4.51 (11.5)

19 (8.6)

T111683

1.00 kVA

83.20

41.60

10.50 (26.7)

5.50 (14.0)

5.13 (13.0)

24 (10.9)

T111684

1.50 kVA

125.00

62.50

11.62 (29.5)

5.50 (14.0)

5.13 (13.0)

30 (13.6)

T111685

2.00 kVA

166.00

83.20

13.00 (33.0)

5.50 (14.0)

5.13 (13.0)

38 (17.2)

T111686

3.00 kVA

250.00

125.00

11.50 (29.2)

10.31 (26.2)

7.13 (18.1)

55 (24.9)

T111687

5.00 kVA

416.00

208.00

14.38 (36.5)

10.31 (26.2)

7.13 (18.1)

75 (34.0)

T211688

7.50 kVA

625.00

312.50

21.19 (53.8)

13.50 (34.3)

10.84 (27.5)

125 (56.7)

T211689

10.00 kVA

833.00

416.60

21.19 (53.8)

13.50 (34.3)

10.84 (27.5)

160 (72.6)

3.75 (9.5)

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

3.62 (9.2)

APPROX.
NET WEIGHT
LBS. (KG.)

4 (1.8)
5 (2.3)

85

6

SECTION

LOW VOLTAGE/
VOLTAGE LIGHTING
LIGHTINGTRANSFORMERS
TRANSFORMERS& POWER SUPPLIES

Low Voltage Lighting Wiring Diagrams
GROUP VI

GROUP V
H1

H1

H2

H2
240V

120V

X1

12V

X1

X2

H1

H2

Voltage
at Lamp
13.2

H2
240V

X2

X1

VOLTAGE DROP CHART
Life Expectancy
% of Rated
of Lamp
Candlepower
2/3 Rated Life
350

24V

X2

240V
INPUT

12V
OUTPUT

CABLE SIZE CONSTANT CHART
Cable
Cable Size
Size
Constant
#18
1380

H4

H3

X1

X2

H4

H3

X1

X2

H2

H1

120V
INPUT

X3

X4

24V
OUTPUT

H2

H1

X3

X4

240V
INPUT

24V
OUTPUT

VOLTAGE DROP FORMULA
X

Total Watts on Cable

3/4 Rated Life

180

#16

2200

Length of Run
Cable Size Constant

12.0

As Rated

100

#14

3500

= Voltage Drop

11.5

2X Rated Life

80

#12

7500

11.0

3X Rated Life

74

#10

11,920

10.5

5X Rated Life

65

#8

18,960

10.0

9X Rated Life

50

#6

30,150

12.6

86

24V

12V
OUTPUT

X2

H1

120V

X1

12V

120V
INPUT

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

H4

H3

X1

H2

H1

X2

X3

X4

H4

H3

H2

H1

X1

X2

X3

X4

SECTION

BUCK-BOOST
TRANSFORMERS
A simple and economical way to
correct offstandard voltages...
from 95 to 500 volts; single and
three phase, in sizes up to 360 kVA.
Simplified buck-boost rating charts
make proper transformer selection
easy, accurate.
Description & Applications .................................88
Questions & Answers ................................... 89-93
Selection Charts – Single Phase .................. 94-96
Selection Charts – Three Phase ................... 97-99
Specifications .................................................. 100
Wiring Diagrams ....................................... 101-102

7

SECTION

7

BUCK-BOOST TRANSFORMERS

Where Are Buck-Boost
Transformers Used?
A typical buck-boost application is 120 volts in, 12
volts out for low voltage lighting or control circuitry. In
most applications, this low voltage transformer is field
connected as an autotransformer. (See question 2 for the
definition of an autotransformer). Buck-boost transformers
provide tremendous capabilities and flexibility in kVA
sizes and input/output voltage combinations. Basically
you get 75 different transformers... all in one
convenient package.
Other buck-boost applications are, where (A) low supply
voltage exists because equipment is installed at the end
of a bus system; (B) the supply system is operating at or
over its design capacity; and (C) where overall consumer
demands may be so high the utility cuts back the supply
voltage to the consumer causing a “brownout.”

Why Use Buck-Boost Instead of
Another Type Transformer ?
Take a look at the advantages and disadvantages of
using a buck-boost transformer (autotransformer)
compared to a standard isolation transformer of the
proper size and voltage combination.
As you can see, the advantages are many, the
economies great. Buck- boost transformers are
readily available from the stock of your nearest Power
Distribution Products Distributor.

ADVANTAGES
More efficient

No circuit isolation

Smaller & lighter

Cannot create a
neutral

5-10 times increase
in kVA
Versatile, many
applications
Lower cost

88

DISADVANTAGES

Application voltages
and kVA don‘t match
the nameplate
voltages and kVA

T211688

T111683

Proper Voltage Is Critical
With nearly two-thirds of all electrical loads being A.C. motor
loads, maintenance of the proper voltage to that motor is very
important. If the supply line voltage is not maintained, motor
winding current is increased causing reduced motor torque and
escalating motor temperature, all of which results in the rapid
loss of insulation life expectancy.
In addition to motor loads, the detrimental effects of low voltage
on both resistive heating loads and incandescent lighting
output is illustrated in the chart.
Anytime you have a lower than standard voltage, equipment
damage and failure can result.
Buck-boost transformers are an economical way to correct
this potentially very serious problem. Anytime a line voltage
change in the 5-20% range is required, a buck-boost
transformer should be considered as your first line of defense.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

7

BUCK-BOOST TRANSFORMERS

How Low Voltage Affects Various
Equipment Operations and Functions
150%

Increase of Motor
Temperature and
Corresponding Insulation Life
Expectancy Loss

= 5% Low Voltage
140%

= 10% Low Voltage

138%

= 15% Low Voltage
130%
Increase of Motor Winding
Current Requirements in
Induction Motor Loads

120%

123%

117%
110%

111%

111%

105%

100%

901/2%

90%

901/2%
84%

81%

81%

80%

72%
70%

72%

70%

Decrease of Heat Output in
Resistive Heating Loads

Decrease in Motor Torque
Output
Decrease of
57%
Incandescent
Lighting Output

60%
50%

Questions & Answers About Buck-Boost Transformers
1. What is a buck-boost transformer?
Buck-boost transformers are small single phase transformers
designed to reduce (buck) or raise (boost) line voltage from
5 -20%. The most common example is boosting 208 volts to
230 volts, usually to operate a 230 volt motor such as an airconditioner compressor, from a 208 volt supply line.
Buck-boosts are a standard type of single phase distribution
transformers, with primary voltages of 120, 240 or 480 volts
and secondaries typically of 12, 16, 24, 32 or 48 volts. They
are available in sizes ranging from 50 volt amperes to 10
kilo-volt amperes.

2. How does a buck-boost transformer differ from an
insulating transformer?
A buck-boost transformer IS an insulating type transformer
when it is shipped from the factory. When it is connected at
the job site, a lead wire on the primary is connected to a lead
wire on the secondary – thereby changing the transformer’s
electrical characteristics to those of an autotransformer. The
primary and secondary windings are no longer “insulated”
and secondary windings are no longer “insulated” and its kVA
capacity is greatly increased. Refer to figures 1, 2 and 3.

Buck-boost transformers are shipped ready to be connected
for a number of possible voltage combinations.

H4
H3
INPUT

H4

X1

H4

H2

X1
OUTPUT

H1
H3

X2

H2

X3

INPUT

H3

X2

H2

X3

INPUT

OUTPUT

X4

OUTPUT

X3
X2

X4
H1

X4

X1

H1

Figure 1. Buck-boost transformer connected as a
low voltage insulating transformer (primary and
secondary windings shown series connected).

Figure 2. Same buck-boost transformer connected
as a boosting autotransformer. The connection from
H1 to X4 “converted” the unit to an autotransformer.

Figure 3. Illustration No. 2 shown with the primary
and secondary windings “straightened”.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

89

SECTION

7

BUCK-BOOST TRANSFORMERS

3. What is the difference between a buckboost transformer and an autotransformer?
When a primary lead wire and secondary lead wire of a buckboost transformer are connected together electrically, in a
recommended voltage bucking or boosting connection, the
transformer is in all respects, an autotransformer. However,
if the interconnection between the primary and secondary
winding is not made, then the unit is an insulating type
transformer.

Applications
4. Why are they used?
Electrical and electronic equipment is designed to operate on standard supply voltage. When the supply voltage is
constantly too high or too low, (usually more than 55%), the
equipment fails to operate at maximum efficiency. A buck
and boost transformer is a simple and ECONOMICAL means
of correcting this off-standard voltage.
5. What are the most common applications
for buck-boost transformers?
Boosting 208V to 230V or 240V and vice versa for commercial and industrial air conditioning systems; boosting 110V to
120V and 240V to 277V for lighting systems; voltage correction for heating systems and induction motors of all types.
Many applications exist where supply voltages are constantly
above or below normal.
6. Can buck-boost transformers be used to
power low voltage circuits?
Yes, low voltage control, lighting circuits, or other low voltage
applications requiring either 12V, 16V, 24V, 32V or 48V. The
unit is connected as an insulating transformer and the nameplate kVA rating is the transformer’s capacity.

Operation and Construction
7. Why do buck-boost transformers have 4
windings?
To make them versatile! A four winding buck-boost transformer
(2 primary and 2 secondary windings) can be connected
eight different ways to provide a multitude of voltage and kVA
outputs. A two winding (1 primary & 1 secondary) buck-boost
transformer can be connected only one way.
8. Will a buck-boost transformer
stabilize voltage?
No. The output voltage is a function of the input voltage. If the
input voltage varies, then the output voltage will also vary by
the same percentage.

Load Data
9. Are there any restrictions on the type
of load that can be operated from a
buck-boost transformer?
No, there are no restrictions.
10. Why can a buck-boost transformer
operate a kVA load many times larger than the
kVA rating on its nameplate?
Since the transformer has been auto-connected in such a
fashion that the 22V secondary voltage is added to the 208V
primary voltage, it produces 230V output.
The autotransformer kVA is calculated:
kVA = Output Volts x Secondary Amps
1000
kVA = 230 V x 41.67 Amps = 9.58 kVA
1000

The picture to the left illustrates the difference in physical size between
the autotransformer of 1 kVA, capable of handling a 9.58 kVA load, and
an isolation transformer capable of handling a 7.5 kVA load.
To cite an example... a model T111683 buck-boost transformer has a
nameplate kVA rating of 1 kVA, but when it’s connected as an autotransformer boosting 208V to 230V, its kVA capacity increases to 9.58 kVA.
The key to understanding the operation of buck-boost transformers lies
in the fact that the secondary windings are the only parts of the transformer that do the work of transforming voltage and current. In the example
above, only 22 volts are being transformed (boosted) — i.e. 208V + 22V
= 230V. This 22V transformation is carried out by the secondary windings
which are designed to operate at a maximum current of 41.67 amps
(determined by wire size of windings).

(1 kVA) T111683

(7.5 kVA) T2535153S

Maximum Secondary Amps =
nameplate kVA x 1000
secondary volts
Maximum Secondary Amps =
1.0 kVA x 1000
=
24 V
1000 VA = 41.67 amps
24 V

90

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

7

BUCK-BOOST TRANSFORMERS

11. Can buck-boost transformers be used
on motor loads?
Yes, either single or three phase. Refer to the motor data
charts in Section I for determining kVA and Amps required by
NEMA standard motors.
12. How are single phase and three phase load
Amps and load kVA calculated?
Single phase Amps = kVA x 1000
Volts
Three phase Amps = kVA x 1000
Volts x 1.73
Single phase kVA = Volts x Amps
1000

Connection and Frequency
16. How does the installer or user know how
to connect a buck-boost transformer?
The connection chart packed with each unit shows how to
make the appropriate connections. These same connection
charts are also shown in this section (page 118).
17. Can 60 Hertz buck-boost transformers
be used on a 50 Hertz service?
No. Acme buck-boost transformers should be operated only at
the frequencies recommended. However, units recommended
for 50 cycle operation are suitable for 60 cycle operation but
not vice versa.

Selection

Three phase kVA = Volts x Amps x 1.73
1000

Three-Phase
13. Can buck-boost transformers be used
on three-phase systems as well as single phase
systems?
Yes. A single unit is used to buck or boost single phase
voltage — two or three units are used to buck or boost three
phase voltage. The number of units to be used in a three phase installation depends on the number of wires in the
supply line. If the three-phase supply is 4 wire Y, use three
buck-boost transformers. If the 3-phase supply is 3 wire Y
(neutral not available), use two buck-boost transformers.
Refer to three-phase selection charts.
14. Should buck-boost transformers be used
to develop a three-phase 4 wire Y circuit from a
three-phase 3 wire delta circuit?
No. A three phase “wye” buck-boost transformer connection
should be used only on a 4 wire source of supply. A delta to
wye connection does not provide adequate current capacity to
accommodate unbalanced currents flowing in the neutral wire
of the 4 wire circuit.
3 PHASE CONNECTIONS
INPUT
(SUPPLY SYSTEM)

DESIRED OUTPUT
CONNECTION

DELTA
3 wire

WYE
3 or 4 wire

DO NOT USE

OPEN DELTA
3 wire

WYE
3 or 4 wire

DO NOT USE

WYE
3 or 4 wire

CLOSED DELTA
3 wire

DO NOT USE

WYE
4 wire

WYE
3 or 4 wire

OK

WYE
3 or 4 wire

OPEN DELTA
3 wire

OK

CLOSED DELTA
3 wire

OPEN DELTA
3 wire

OK

15. Why isn’t a closed delta buck-boost
connection recommended?
A closed delta buck-boost auto transformer connection
requires more transformer kVA than a “wye” or open delta
connection and phase shifting occurs on the output.
Consequently the closed delta connection is more
expensive and electrically inferior to other three-phase
connections.

18. How do you select a buck-boost
transformer?
Refer to the selection steps on page 101 for easy 4-step
selection, then go to the charts. Also, pages 12 and 13 are
helpful for determining buck-boost kVA when only the H.P.
rating of a motor is available.

Nameplate Data
19. Why are buck-boost transformers
shipped from the factory as insulating
transformers and not preconnected at the factory
as autotransformers?
A four winding buck-boost transformer can be auto connected
eight different ways to provide a multitude of voltage and
kVA output combinations. The proper transformer connection
depends on the user’s supply voltage, load voltage and load
kVA. Consequently, it is more feasible for the manufacturer to
ship the unit as an insulating transformer and allow the user
to connect it on the job site in accordance with the available
supply voltage and requirements of his load.
20. Why is the isolation transformer kVA
rating shown on the nameplate instead of the
autotransformer kVA rating?
The kVA rating of a buck-boost transformer when auto
connected depends on the amount of voltage buck or boost.
Since the amount of voltage buck or boost is different for
each connection, it is physically impossible to show all of the
various voltage combinations and attainable kVA ratings on the
nameplate. A connection chart showing the various attainable
single phase and three-phase connections is packed with
each unit.

Safety
21. Do buck-boost transformers present a safety
hazard usually associated with autotransformers?
No. Most autotransformers, if they are not of the buck-boost
variety, change voltage from one voltage class to another.
(Example 480V to 240V) In a system where one line is
grounded, the user thinks he has 240V; yet due to the primary
and secondary being tied together, it is possible to have 480V
to ground from the 240V output. A buck-boost transformer only
changes the voltage a small amount, such as 208V to 240V.
This small increase does not represent a safety hazard, as
compared to a buck of 480V to 240V. Refer to Figure on the
following page.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

91

SECTION

7

BUCK-BOOST TRANSFORMERS
An autotransformer changes or transforms only a portion of
the electrical energy it transmits. The rest of the electrical
energy flows directly through the electrical connections
between the primary and secondary. An isolation transformer
(insulating transformer) changes or transforms all of the
electrical energy it transmits.

240V OUTPUT
LINE TO LINE
480V
INPUT

400 VOLTS
LINE TO GROUND
(POTENTIAL SAFETY
HAZARD)

Consequently, an autotransformer is smaller, lighter in weight,
and less costly than a comparable kVA size insulating
transformer.

Sound Levels
22. Are buck-boost transformers as quiet as
standard isolation transformers?
Yes. However, an auto-connected buck-boost transformer will
be quieter than an isolation transformer capable of handling
the same load. The isolation transformer would have to be
physically larger than the buck-boost transformer, and small
transformers are quieter than larger ones. (Example) 1 kVA —
40 db; 75 kVA — 50 db. (db is a unit of sound measure).

Cost and Life Expectancy
23. How does the cost of a buck-boost
transformer compare to that of an insulating
transformer — both capable of handling the same
load?
For the most common buck-boost applications, the dollar
savings are generally greater than 75% compared to the use
of an insulating type distribution transformer for the same
application.

Please refer to Question 27 for additional information on autotransformers.
Buck-boost transformers are frequently field-connected as
autotransformers.
26. Buck-boost transformers are almost
always installed as auto-transformers. Does the
N.E.C. (National Electrical Code) permit
the use of autotransformers?
Yes. Please refer to N.E.C. Article 450-4, “Autotransformers
600 Volts, Nominal, or Less.” Item (a) explains how to
overcurrent protect an autotransformer; item (b) explains that
an insulating transformer such as a buck-boost transformer
may be field connected as an autotransformer.

24. What is the life expectancy of a buck
boost transformer?
The life expectancy of a buck-boost transformer is the same
as the life expectancy of other dry type transformers.

27. When a buck-boost transformer is
connected as an autotransformer such as
boosting 208V to 230V, the kVA is greatly
increased. What is the procedure for determining
the size (ampere rating) of the overcurrent
protective device such as a fuse or circuit
breaker?
The National Electrical Code Article 450-4 addresses
overcurrent protection of autotransformers. A copy is
reproduced below for easy reference.

National Electrical Code

450-4. Autotransformers 600 Volts, Nominal, or Less.

25. Your catalog indicates that a buck-boost
transformer is suitable for connecting as an
AUTOTRANS-FORMER. What is the definition of
an autotransformer and how does it differ from an
isolation transformer?
An autotransformer is a transformer in which the primary
(input) and the secondary (output) are electrically connected
to each other. An isolation transformer, also known as an
insulating transformer, has complete electrical separation
between the primary (input) and the secondary (output). This
is illustrated in the drawing below.

(a) Overcurrent Protection. Each autotransformer 600
volts, nominal, or less shall be protected by an individual
overcurrent device installed in series with each ungrounded
input conductor. Such overcurrent device shall be rated or
set at not more than 125 percent of the rated full-load input
current of the autotransformer. An overcurrent device shall
not be installed in series with the shunt winding (the winding
common to both the input and the output circuits) of the
autotransformer between Points A and B as shown in Diagram
450-4.
Diagram 450-4

SECONDARY
(OUTPUT)

PRIMARY
(INPUT)

SECONDARY
(OUTPUT)

PRIMARY
(INPUT)

A
ISOLATION
TRANSFORMER

AUTOTRANSFORMER

SHUNT WINDING(S)

(ALSO CALLED
“INSULATING TRANSFORMER”)

B

92

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SECTION

7

BUCK-BOOST TRANSFORMERS

Exception: Where the rated input current of an
autotransformer is 9 amperes or more and 125 percent of this
current does not correspond to a standard rating of a fuse or
non-adjustable circuit breaker, the next higher standard
rating described in Section 240-6 shall be permitted. When
the rated input current is less than 9 amperes, an overcurrent
device rated or set at not more than 167 percent of the input
current shall be permitted.

When this 1 kVA unit is connected as an autotransformer for
this voltage combination, its kVA rating is increased to 9.58 kVA
(may also be expressed as 9,580 VA). This is the rating to
be used for determining the full load input amps and the
sizing of the overcurrent protect device (fuse or breaker) on
the input.

(b) Transformer Field-Connected as an Autotransformer.
A transformer field-connected as an autotransformer shall
be identified for use at elevated voltage.

9,580 Volt Amps = 46 Amps
208 Volts

28. I have noted the reprint of the N.E.C.
(National Electrical Code), Article 450-4 shown in
the previous question covering autotransformer
overcurrent protection. Could you explain this
article in detail by citing an example?
An example of an everyday application is always a good
way to explain the intent of the “Code.” Example: A 1 kVA
transformer Catalog No. T111683 has a primary of 120 x
240V and a secondary of 12 x 24V. It is to be connected as an
autotransformer at the time of installation to raise 208V to
230V single phase.

Full Load Input Amps =

When the full load current is greater than 9 amps, the
overcurrent protective device (usually a fuse or nonadjustable breaker) amp rating can be up to 125 percent of
the full load rating of the autotransformer input amps.
Max. amp rating of the
overcurrent device
= 46 amps x 125% = 57.5 amps
The National Electrical Code, Article 450-4 (a) Exception,
permits the use of the next higher standard ampere rating of
the overcurrent device. This is shown in Article 240-6 of the
N.E.C.
Max. size of the fuse or circuit breaker
= 60 amps

Steps for Selecting the Proper Buck-Boost Transformer
You should have the following information before selecting
a buck-boost transformer.
Line Voltage — The voltage that you want to buck (decrease)
or boost (increase). This can be found by measuring the
supply line voltage with a voltmeter.
Load Voltage — The voltage at which your equipment is
designed to operate. This is listed on the nameplate of the
load equipment.
Load kVA or Load Amps — You do not need to know both
— one or the other is sufficient for selection purposes. This
information usually can be found on the nameplate of the
equipment that you want to operate.
Frequency — The supply line frequency must be the same as
the frequency of the equipment to be operated — either 50 or
60 cycles.
Phase — The supply line should be the same as the
equipment to be operated — either single or three phase.

Four Step Selection
1. A series of LINE VOLTAGE and LOAD
VOLTAGE combinations are listed across the top of
each selection chart. Select a LINE VOLTAGE and LOAD
VOLTAGE combination from ANY of the charts that comes
closest to matching the LINE VOLTAGE and LOAD
VOLTAGE of your application.
2. Read down the column you have selected until you reach
either the LOAD kVA or LOAD AMPS of the equipment you
want to operate. You probably will not find the exact value of
LOAD kVA or LOAD AMPS so go to the next higher rating.
3. From this point, read across the column to the far lefthand side and you have found the catalog number of
the exact buck-boost transformer you need. Refer to the
catalog number listing on page 103 for dimensions.
4. CONNECT the transformer according to the connection
diagram specified at the bottom of the column where you
selected YOUR LINE VOLTAGE and LOAD VOLTAGE
combination. Connection diagrams are found at the end of
this section.
This same connection information is packed with each
buck-boost transformer.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

93

SECTION

7

BUCK-BOOST TRANSFORMERS

SELECTION CHARTS

SINGLE PHASE

GROUP I
SINGLE PHASE

BOOSTING

BUCKING

Line Voltage
(Available)

95

100

105

110

189

208

215

220

125

132

230

245

250

252

Load Voltage
(Output)

114

120

115

120

208

230

237

242

113

120

208

222

227

240

0.24
2.08

0.25
2.08

0.48
4.17

0.50
4.17

0.43
2.08

0.48
2.08

0.49
2.08

0.50
2.08

0.52
4.60

0.54
4.60

0.47
2.28

0.50
2.28

0.52
2.28

1.02
4.37

6

6

10

10

6

6

6

6

10

10

6

6

6

10

0.47
4.17

0.50
4.17

0.96
8.33

1.01
8.33

0.87
4.17

0.96
4.17

0.99
4.17

1.01
4.17

1.04
9.20

1.08
9.20

0.95
4.56

1.00
4.56

1.04
4.58

2.04
8.75

10

10

15

15

10

10

10

10

15

15

10

10

10

15

0.71
6.25

0.75
6.25

1.43
12.50

1.51
12.50

1.30
6.25

1.43
6.25

1.48
6.25

1.51
6.25

1.56
13.80

1.62
13.80

1.42
6.86

1.50
6.86

1.56
6.86

3.00
13.10

15

15

20

20

15

15

15

15

20

20

15

15

15

15

1.19
10.42

1.25
10.40

2.40
20.80

2.50
20.80

2.16
10.40

2.39
10.40

2.60
22.80

2.75
22.80

2.37
11.40

2.50
11.40

2.60
11.40

5.10
21.80

25

25

40

30

15

15

30

30

15

15

15

30

2.37
20.83

2.50
20.83

4.80
41.67

5.00
41.67

4.33
20.83

4.79
20.83

5.20
46.80

5.40
46.80

4.47
22.80

5.00
22.80

5.20
22.80

10.20
43.70

35

35

60

60

30

30

60

60

30

30

30

60

3.56
31.25

3.75
31.25

7.17
62.50

7.56
62.50

6.50
31.25

7.19
31.25

7.80
68.50

8.15
69.50

7.10
34.40

7.50
34.40

7.80
34.40

15.30
65.50

50

50

90

90

45

45

80

80

40

40

40

80

4.75
41.67

5.00
41.67

9.58
83.31

10.00
83.31

8.66
41.67

9.58
41.67

10.40
91.50

10.80
91.50

9.50
45.80

10.00
45.80

10.00
45.80

20.40
87.50

70

70

125

125

60

60

110

110

60

60

50

110

13.00
62.50

14.30
62.50

90

90

17.30
83.30

19.16
83.30

125

125

CAT. NO.

T181047

T181048

T181049

T181050

T181051

T181052

T111683

T111684

T111685

T111686

T111687

T211688

T211689

Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker

See Page 110 For Connection Diagrams

7.12
62.50
100
9.50
83.30
125

7.50 14.40 15.10
62.50 125.00 125.00
100

175

175

10.00 19.20 20.20
83.30 166.60 166.60
125

250

250

14.20 15.00 28.80 30.00
125.00 125.00 250.00 250.00
200

200

350

350

23.70 25.00 47.90 50.00
208.00 208.00 416.60 416.60
350

350

600

600

35.60 37.50 71.90 75.60
312.50 312.50 625.00 625.00
500

500

1000

1000

47.50 50.00 95.80 100.00
416.60 416.60 833.30 833.30

2.46 2.52
10.40 10.40
15

15

4.93 5.04
20.83 20.83
30

30

7.41 7.56
31.25 31.25
45

45

9.87 10.00
41.67 41.67
60

60

14.80 15.10
62.50 62.50
90

90

19.70 20.10
83.30 83.30
125

125

26.00 28.70 29.60 30.30
125.00 125.00 125.00 125.00
175

175

175

175

43.30 47.80 49.30 50.30
208.00 208.00 208.00 208.00
300

300

300

300

65.00 71.80 74.00 75.60
312.50 312.50 312.50 312.50
450

450

450

450

86.60 95.80 98.70 101.00
416.60 416.60 416.60 416.60

15.00 16.20 14.24
138.00 138.00 68.60
150

175

80

20.80 21.60 19.00
183.00 183.00 91.60
225

225

110

15.00
68.60
80
20.00
91.60
110

15.60 30.60
68.60 132.00
80

175

20.30 40.80
91.20 175.00
110

225

31.20 32.50 28.50 30.00 31.20 61.00
275.00 275.00 136.80 136.80 136.80 263.00
350

350

175

175

175

350

52.00 54.00 47.40 50.00 52.00 102.00
457.00 457.00 228.00 228.00 228.00 437.00
600

600

300

300

300

600

78.00 81.00 71.00 76.00 78.00 153.00
688.00 688.00 344.00 344.00 344.00 655.00
800

800

400

400

400

800

104.00 108.00 95.00 100.00 104.00 204.00
915.00 915.00 458.00 458.00 458.00 875.00

700

700

1200

1200

600

600

600

600

1200

1200

600

600

600

1200

D

D

C

C

H

H

H

H

F

F

I

I

I

E

See chart on page 101, for number of leads per termination.
NOTE: Inputs and Outputs may be reversed; kVA capacity remains constant. All applications above bold face line are suitable for 50/60 Hz. All applications below bold
face line are suitable for 60 Hz only.
With larger kVA buck-boost units, it is necessary to utilize multiple conductors on the secondary (X) terminals as shown in the chart on page 101.
94

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

7

BUCK-BOOST TRANSFORMERS

GROUP II
SINGLE PHASE

BOOSTING

BUCKING

Line Voltage
(Available)

95

100

105

208

215

215

220

225

135

240

240

245

250

255

Load Voltage
(Output)

120

114

119

240

244

230

235

240

119

208

225

230

234

239

0.19
1.56

0.36
3.13

0.37
3.13

0.38
1.56

0.38
1.56

0.72
3.13

0.73
3.13

0.75
3.13

0.42
3.54

0.37
1.77

0.75
3.33

0.77
3.33

0.78
3.33

0.80
3.33

6

6

6

6

6

6

6

6

6

3

6

6

6

6

0.38
3.13

0.71
6.25

0.74
6.25

0.75
3.13

0.76
3.13

1.44
6.25

1.47
6.25

1.50
6.25

0.84
7.08

0.74
3.54

1.50
6.67

1.53
6.67

1.56
6.67

1.59
6.67

10

15

6

6

15

15

15

15

15

6

15

15

15

15

0.56
4.69

1.07
9.38

1.12
9.38

1.13
4.69

1.14
4.69

2.16
9.38

2.20
9.38

2.25
9.38

1.26
10.63

2.25
10.00

2.30
10.00

2.34
10.00

2.39
10.00

10

15

15

10

10

15

15

15

15

15

15

15

15

0.94
7.81

1.78
15.63

1.86
15.63

1.88
7.81

1.91
7.81

3.59
15.63

15

25

25

15

15

25

1.88
15.63

3.56
31.25

3.72
31.25

3.75
15.63

3.81
15.63

7.19
31.25

25

45

45

25

25

45

2.81
23.44

5.34
46.88

5.58
46.88

5.63
23.44

5.72
23.44

10.78
46.88

40

70

70

40

40

70

3.75
31.25

7.13
62.50

7.44
62.50

7.50
31.25

7.63
31.25

14.38
62.50

50

90

90

50

50

90

5.63
46.90

10.69
93.80

11.16
93.80

11.25
46.90

11.44
46.90

21.56
93.80

80

150

150

70

70

125

CAT. NO.

T181054

T181055

T181056

T181057

T181058

T181059

T113073

T113074

T113075

T113076

T113077

T213078

T213079

Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker

See Page 110 For
Connection Diagrams

7.50 14.25 14.88
62.50 125.00 125.00
100

200

200

11.25 21.38 22.31
93.80 187.50 187.50
150

300

300

15.00
62.50
90
22.50
93.80
150

18.75 35.63 37.19 37.50
156.30 312.50 312.50 156.30
250

450

450

225

28.10 53.40 55.80 56.30
234.40 468.80 468.80 234.40
400

700

700

350

37.50 71.30 74.40 75.00
312.50 625.00 625.00 312.50

3.67 3.75
15.63 15.63
25

25

7.34 7.50
31.25 31.25
45

45

11.02 11.25
46.88 46.88
70

70

14.69 15.00
62.50 62.50
90

90

22.03 22.50
93.80 93.80
125

125

15.25 28.75 29.38 30.00
62.50 125.00 125.00 125.00
90

175

175

175

22.88 43.13 44.06 45.00
93.80 187.50 187.50 187.50
150

250

250

250

38.13 71.88 73.44 75.00
156.30 312.50 312.50 312.50
225

450

450

450

57.20 107.80 110.20 112.50
234.40 468.80 468.80 468.80
350

700

700

700

76.30 143.80 146.90 150.00
312.50 625.00 625.00 625.00

1.11
5.31
6

2.11
17.71

1.84
8.85

3.75
16.67

3.83
16.67

3.90
16.67

3.98
16.67

20

15

20

20

20

20

4.21
35.42

3.68
17.71

7.50
33.33

7.67
33.33

7.80
33.33

7.97
33.33

40

20

40

40

40

40

6.32
53.13

5.53
26.56

11.25
50.00

11.50
50.00

11.70
50.00

11.95
50.00

60

30

60

60

60

60

8.43
70.83

7.37
35.42

15.00
66.67

15.33
66.67

15.60
66.67

15.93
66.67

80

40

80

80

80

80

12.64 11.05 22.50 23.00 23.40 23.90
106.30 53.10 100.00 100.00 100.00 100.00
125

60

125

125

125

125

16.86 14.73 30.00 30.67 31.20 31.87
141.70 70.80 133.30 133.30 133.30 133.30
175

80

175

175

175

175

25.29 22.10 45.00 46.00 46.80 47.80
212.50 106.30 200.00 200.00 200.00 200.00
250

125

250

250

250

250

42.15 36.83 75.00 76.67 78.00 79.67
354.20 177.10 333.30 333.30 333.30 333.30
400

200

400

400

400

400

63.20 55.30 112.50 115.00 117.00 119.50
531.30 265.60 500.00 500.00 500.00 500.00
600

300

600

600

600

600

84.30 73.70 150.00 153.30 156.00 159.30
708.30 354.20 666.70 666.70 666.70 666.70

500

1000

1000

450

450

1000

1000

1000

800

400

800

800

800

800

D

C

C

H

H

G

G

G

F

I

E

E

E

E

See chart on page 101.
NOTE: Inputs and Outputs may be reversed; kVA capacity remains constant. All applications above bold face line are suitable for 50/60 Hz. All applications below
bold face line are suitable for 60 Hz only.
With larger kVA buck-boost units, it is necessary to utilize multiple conductors on the secondary (X) terminals as shown in the chart on page 101.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

95

7

SECTION

BUCK-BOOST TRANSFORMERS

GROUP III
SINGLE PHASE

BOOSTING

BUCKING

Line Voltage
(Available)

230

380

416

425

430

435

440

440

450

460

277

480

480

504

Load Voltage
(Output)

277

420

457

467

473

457

462

484

472

483

230

436

456

480

0.29
1.04

0.44
1.04

0.48
1.04

0.49
1.04

0.49
1.04

0.95
2.08

0.96
2.08

0.50
1.04

0.98
2.08

1.01
2.08

0.29
1.25

0.50
1.15

1.05
2.29

1.10
2.29

3

3

3

3

3

6

6

3

6

6

3

3

6

6

0.58
2.08

0.87
2.08

0.95
2.08

0.97
2.08

0.99
2.08

1.90
4.17

1.93
4.17

1.01
2.08

1.97
4.17

2.01
4.17

0.58
2.50

1.00
2.29

2.09
4.58

2.20
4.58

6

6

6

6

6

10

10

6

10

10

6

6

10

10

0.87
3.13

1.31
3.13

1.43
3.13

1.46
3.13

1.48
3.13

2.86
6.25

2.89
6.25

1.51
3.13

2.95
6.25

3.02
6.25

0.86
3.75

1.50
3.44

3.14
6.88

3.30
6.88

10

6

6

6

6

15

15

6

15

15

6

6

15

15

1.44
5.21

2.19
5.21

2.38
5.21

2.43
5.21

2.46
5.21

4.76
5.21

4.81
10.42

1.44
6.25

2.50
5.73

5.23
11.46

5.50
11.46

15

10

10

10

10

15

15

10

10

15

15

2.89
10.42

4.38
10.42

4.76
10.42

4.86
10.42

4.93
10.42

9.52
20.83

2.88
12.50

5.00
11.46

10.45
22.92

11.00
22.92

20

15

15

15

15

30

15

15

30

30

4.33
15.63

6.56
15.63

7.14
15.63

7.30
15.63

7.39
15.63

14.28
31.25

4.31
18.75

7.49
17.19

15.68
34.38

16.50
34.38

25

25

25

25

25

45

20

20

45

45

5.77
20.83

8.57
20.83

9.52
20.83

9.73
20.83

9.85
20.83

19.04
41.67

5.75
25.00

9.99
22.92

20.90
45.83

22.00
45.83

35

30

30

30

30

60

30

30

60

60

8.66
31.25

13.13
31.25

14.28
31.25

14.59
31.25

14.78
31.25

28.56
62.50

8.63
37.50

14.99
34.38

31.35
68.75

33.00
68.75

50

50

45

45

45

90

40

40

90

90

11.54
41.67

17.50
41.67

19.04
41.67

19.46
41.67

19.71
41.67

38.08
83.33

11.50
50.00

19.98
45.83

41.80
91.67

44.00
91.67

70

60

60

60

60

110

60

60

110

110

17.31
62.50

26.25
62.50

28.56
62.50

29.19
62.50

100

90

90

90

CAT. NO.

T181061

T181062

T181063

T181064

T181065

T181066

T137920

T137921

T137922

T137923

T137924

T243570

T243571

Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker

See Page 110 For
Connection Diagrams

28.90 43.80 47.60 48.60
104.20 104.20 104.20 104.20
175

150

150

150

43.30 65.60 71.40 73.00
156.30 156.30 156.30 156.30
250

225

225

225

57.70 87.50 95.20 97.30
208.30 208.30 208.30 208.30

2.52 4.92 5.03
5.21 10.42 10.42
10

15

15

9.62 5.04 9.83 10.06
20.83 10.42 20.83 20.83
30

15

30

30

14.44 7.56 14.75 15.09
31.25 15.63 31.25 31.25
45

25

45

45

19.25 10.08 19.67 20.13
41.67 20.83 41.67 41.67
60

30

60

60

28.88 15.13 29.50 30.19
62.50 31.25 62.50 62.50
90

45

90

90

38.50 20.17 39.33 40.25
83.33 41.67 83.33 83.33
110

60

110

110

29.56 57.13 57.75 30.25 59.00 60.38
62.50 125.00 125.00 62.50 125.00 125.00
90

175

175

90

175

175

49.30 95.20 96.20 50.40 98.30 100.60
104.20 208.30 208.30 104.20 208.30 208.30
150

300

300

150

300

300

73.90 142.80 144.40 75.60 147.50 150.90
156.30 312.50 312.50 156.30 312.50 312.50
225

450

450

225

450

450

98.50 190.40 192.50 100.80 196.70 201.30
208.30 416.70 416.70 208.30 416.70 416.70

17.25
75.00
80

29.98 62.70 66.00
68.80 137.50 137.50
80

175

28.80 50.00 104.50 110.00
125.00 114.60 229.20 229.20
150

150

300

300

43.10 74.90 156.80 165.00
187.50 171.90 343.80 343.80
200

200

450

450

57.50 99.90 209.00 220.00
250.00 229.20 458.30 458.30

350

300

300

300

300

600

600

300

600

600

300

300

600

600

D

H

H

H

H

G

G

H

G

G

J

I

E

E

See chart on page 101.
NOTE: Inputs and Outputs may be reversed; kVA capacity remains constant. All applications above bold face line are suitable for 50/60 Hz. All applications
below bold face line are suitable for 60 Hz only.

96

175

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

7

BUCK-BOOST TRANSFORMERS

SELECTION CHARTS

THREE PHASE

GROUP I
THREE PHASE
Line Voltage
(Available)
Load Voltage
(Output)

BOOSTING

BUCKING

189Y 196Y
109Y 113Y

201Y
116Y

208Y
120Y

189

208

220

219

230

250

255

264

208

234

240

230

208

230

242

208

208

227

232

240

1.50
4.17

0.84
2.08

0.87
2.08

1.66
4.17

0.75
2.08

0.83
2.08

0.87
2.08

1.58
4.39

0.83
2.30

0.90
2.29

0.92
2.29

0.95
2.29

10

6

6

10

6

6

6

10

6

6

6

6

3.00
8.33

1.69
4.17

1.73
4.17

3.32
8.33

1.50
4.17

1.66
4.17

1.75
4.17

3.16
8.77

1.66
4.61

1.80
4.59

1.84
4.58

1.91
4.58

15

10

10

15

10

10

10

15

10

10

10

10

4.50
12.50

2.53
6.25

2.60
6.25

4.98
12.50

2.25
6.25

2.49
6.25

2.62
6.25

4.74
13.16

2.49
6.91

2.71
6.88

2.76
6.87

2.86
6.88

20

15

15

20

15

15

15

20

15

15

15

15

7.51
20.83

4.22
10.42

4.33
10.42

8.30
20.83

3.75
10.42

4.15
11.52

4.51
11.47

4.60
11.45

4.76
11.46

30

20

20

30

15

15

15

15

15

15.01
41.67

8.44
20.83

8.66
20.83

16.60
41.67

7.51
20.83

8.30
23.04

9.02
22.94

9.20
22.90

9.53
22.92

60

35

35

60

30

30

30

30

30

22.52
62.50

12.67
31.25

12.99
31.25

24.90
62.50

11.26
31.25

12.45
34.56

13.53
34.42

13.80
34.35

14.29
34.38

90

50

50

90

45

40

40

40

40

30.02
83.33

16.89
41.67

17.32
41.67

33.20
83.33

15.01
41.67

31.61
87.74

16.60
46.07

18.04
45.89

18.40
45.80

19.05
45.83

125

70

70

125

60

110

60

60

60

60

45.03
125.00

25.33
62.50

25.98
62.50

27.06
68.83

27.60
68.70

28.58
68.75

175

100

100

80

80

80

60.04
166.67

33.77
83.33

34.64
83.33

36.08
91.78

36.81
91.59

38.11
91.67

250

125

125

110

110

110

CAT. NO.

T181047

T181048

T181049

T181050

T181051

T181052

T111683

T111684

T111685

T111686

T111687

T211688

T211689

Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker

Quantity Required
See Page 102 For
Connection Diagrams

90.07 50.66 51.96
250.00 125.00 125.00
350

200

200

150.11 84.44 86.60
416.67 208.33 208.33
600

350

350

225.17 126.66 129.90
625.00 312.50 312.50
1000

500

500

300.22 168.87 173.21
833.33 416.67 416.67

49.80
125.00
175
66.40
167.67
250

22.52
62.50
90
30.02
83.33
125

4.15 4.37
10.42 10.42
15

15

8.30 8.73
20.83 20.83
30

30

12.45 13.10
31.25 31.25
45

45

16.60 17.46
41.67 41.67
60

60

24.90 26.20
62.50 62.50
90

90

33.20 34.93
83.33 83.33
125

125

99.59 45.03 49.80 52.39
250.00 125.00 125.00 125.00
350

175

175

175

165.99 75.06 82.99 87.32
416.67 208.33 208.33 208.33
600

300

300

300

248.98 112.58 124.49 130.99
625.00 312.50 312.50 312.50
1000

450

450

450

331.98 150.11 165.99 174.65
833.33 416.67 416.67 416.67

7.90
21.94
30
15.80
43.87
60
23.71
65.81
80

47.41 24.90
131.61 69.11
175

80

63.22 33.20
175.48 92.15
225

110

94.83 49.80 54.13 55.21 57.16
263.22 138.22 137.67 137.39 137.50
350

175

175

175

175

158.05 82.99 90.21 92.02 95.26
438.70 230.37 229.44 228.99 229.17
600

300

300

300

300

237.07 124.49 135.32 138.02 142.89
658.05 345.55 344.16 343.48 343.75
800

400

400

400

400

316.10 165.99 180.42 184.03 190.53
877.40 460.74 458.88 457.97 458.33

1200

700

700

1200

600

600

600

1200

600

600

600

600

3

3

3

3

2

2

2

2

2

2

2

2

A-A

F-F

F-F

A-A

B-B

B-B

B-B

C-C

E-E

E-E

E-E

E-E

See chart on page 101.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

97

SECTION

7

BUCK-BOOST TRANSFORMERS

GROUP II
THREE PHASE

BOOSTING

BUCKING

Line Voltage
(Available)

183Y
106Y

208Y
120Y

195

208

225

240

245

250

256

265

272

Load Voltage
(Output)

208

236

208

240

240

208

230

234

240

234

240

1.13
3.13

1.28
3.13

1.13
3.13

0.63
1.56

1.30
3.13

0.56
1.56

1.33
3.33

1.35
3.34

1.39
3.33

0.72
1.77

0.74
1.77

6

6

6

3

6

3

6

6

6

3

3

2.25
6.25

2.55
6.25

2.25
6.25

1.27
3.13

2.60
6.25

1.13
3.13

2.65
6.66

2.71
6.68

2.77
6.67

1.43
3.54

1.47
3.54

15

15

15

6

15

6

15

15

15

6

6

3.38
9.38

3.83
9.38

3.38
9.38

1.90
4.69

3.90
9.38

1.69
4.69

3.98
9.99

4.06
10.02

4.16
10.00

2.15
5.31

2.21
5.31

15

15

15

10

15

10

15

15

15

10

10

5.63
15.63

6.39
15.63

5.63
15.63

3.17
7.81

6.50
15.63

2.81
7.81

6.63
16.64

6.77
16.69

6.93
16.67

3.59
8.85

3.68
8.85

25

25

25

15

25

15

20

20

20

15

15

11.26
31.25

12.77
31.25

11.26
31.25

6.33
15.63

12.99
31.25

5.63
15.63

13.26
33.29

13.53
33.39

13.86
33.33

7.17
17.69

7.36
17.71

45

45

45

25

45

20

40

40

40

20

20

16.89
46.88

19.16
46.88

16.89
46.88

9.50
23.44

19.49
46.88

8.44
23.44

19.89
49.93

20.30
50.08

20.78
50.00

10.76
26.54

11.04
26.56

70

70

70

35

70

30

60

60

60

30

30

22.52
62.50

25.55
62.50

22.52
62.50

12.67
31.25

25.98
62.50

11.26
31.25

26.52
66.58

27.06
66.67

27.71
66.67

14.34
35.39

14.72
35.42

90

90

90

45

90

35

80

80

80

40

40

33.77
93.75

38.32
93.75

33.77
93.75

19.00
46.88

38.97
93.75

16.89
46.88

150

150

125

70

125

60

CAT. NO.

T181054

T181055

T181056

T181057

T181058

T181059

T113073

T113074

T113075

T113076

T113077

T213078

T213079
Quantity Required
See Page 110 For
Connection Diagrams

Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker
Load

kVA
Amps

Max. Size of
Fuse or Breaker

45.03
125.00
200
67.55
187.50
300
112.58
312.50
450
166.87
468.75
700

51.10
125.00
200
76.64
187.50
300
127.74
312.50
450
191.61
468.75
700

45.03
125.00
175
67.55
187.50
250
112.58
312.50
450
168.87
468.75
700

25.33 51.96
62.50 125.00
90

175

38.00 77.94
93.75 187.50
150

250

63.33 129.90
156.25 312.50
225

450

94.99 194.86
234.38 468.75
350

700

126.66 259.81
312.50 625.00

39.87 40.59 41.57 21.52
99.86 100.16 100.00 53.08
125

125

125

22.52 53.04 54.13 55.43 28.69
62.50 133.15 133.55 133.33 70.78
70

175

175

175

80

60
29.44
70.83
80

33.77 79.57 81.19 83.14 43.03 44.17
93.75 199.73 200.32 200.00 106.17 106.25
110

250

250

250

125

125

56.29 132.61 135.32 138.56 71.72 73.50
156.25 332.88 333.87 333.33 176.95 176.80
175

400

400

400

200

200

84.44 198.92 202.97 207.85 107.58 110.42
234.38 499.32 500.80 500.00 265.42 265.63
300

600

600

600

300

300

225.17
625.00

255.48
625.00

225.17
625.00

1000

1000

1000

450

1000

350

800

800

800

400

400

3

3

2

2

2

2

2

2

2

2

2

A-A

A-A

G-G

B-B

G-G

D-D

C-C

C-C

C-C

E-E

E-E

112.58 265.22 270.63 277.13 143.44 147.22
312.50 665.76 667.74 666.67 353.90 354.17

See chart on page 101.
NOTE: (1) Inputs and Outputs may be reversed; kVA capacity remains constant. All applications above bold face line are suitable for 50/60 Hz.
All applications below bold face line are suitable for 60 Hz only. (2) Connection Diagrams A-A and F-F cannot be reverse connected.
98

60

22.08
53.13

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

7

BUCK-BOOST TRANSFORMERS

GROUP III
THREE PHASE
Line Voltage
(Available)
Load Voltage
(Output)

BOOSTING
399Y
230Y
480Y
277Y

BUCKING

380

430

440

460

460

480

480

440

440

460

460

480

480

500

500

420

473

462

506

483

528

504

400

419

438

418

457

436

455

477

0.86
1.04

0.76
1.04

0.85
1.04

1.66
2.08

0.91
1.04

1.74
2.08

0.95
1.04

1.82
2.08

0.79
1.14

1.58
2.18

1.66
2.18

0.83
1.14

1.73
2.18

0.86
1.14

0.90
1.14

3

3

3

6

3

6

3

6

3

6

6

3

6

3

3

1.73
2.08

1.51
2.08

1.70
2.08

3.33
4.16

1.82
2.08

3.48
4.16

1.90
2.08

3.63
4.16

1.59
2.29

3.17
4.37

3.31
4.37

1.66
2.29

3.46
4.37

1.73
2.29

1.80
2.29

6

6

6

10

6

10

6

10

6

10

10

6

10

6

6

2.60
3.12

2.27
3.12

2.56
3.12

4.99
6.24

2.73
3.12

5.22
6.25

2.85
3.12

5.45
6.24

2.38
3.43

4.75
6.55

4.97
6.55

2.48
3.43

5.19
6.55

2.59
3.43

2.70
3.43

10

6

6

15

6

15

6

15

6

15

15

6

15

6

6

4.33
5.20

3.78
5.20

4.26 8.32
5.20 10.40

4.56
5.20

8.70
10.40

15

10

10

10

15

8.60
10.40

7.56
10.40

20

15

12.90
15.60

11.34
15.60

25

25

17.30
20.80

15.12
20.80

35

30

25.90
31.20

22.69
31.20

50

45

34.60
41.60

30.25
41.60

70

60

52.00
62.50

45.45
62.50

100

90

CAT. NO.

T181061

T181062

T181063

T181064

T181065

T181066

T137920

T137921

T137922

T137923

T137924

T243570

T243571

Load

kVA
Amps

Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker
kVA
Load
Amps
Max. Size of
Fuse or Breaker

Quantity Required
See Page 110 For
Connection Diagrams

15

8.52 16.64
10.40 20.80
15

30

12.77 24.97
15.60 31.20
25

45

17.03 33.29
20.80 41.60
30

60

25.55 49.93
31.20 62.40
45

90

34.07 66.58
41.60 83.20
60

110

51.18 100.03
62.50 125.00
90

175

9.11
10.40
15
13.67
15.60
25
18.23
20.80
30
27.34
31.20
45
36.46
41.60
60

4.76 9.08
5.20 10.40
10

15

17.40 9.51 18.16
20.80 10.40 20.80
30

15

30

26.10 14.27 27.24
31.20 15.60 31.20
45

25

45

34.80 19.02 36.31
41.60 20.80 41.60
60

30

60

52.20 28.53 54.47
62.40 31.20 62.40
90

45

90

69.60 38.04 72.63
83.20 41.60 83.20
110

60

110

54.69 104.57 57.07 109.12
62.50 125.00 62.50 125.00
90

175

90

175

86.10 75.62 85.17 166.44 91.15 174.01 95.11 181.57
104.00 104.00 104.00 208.00 104.00 208.00 104.00 208.00
175

150

150

300

150

300

150

300

129.30 113.43 127.75 249.66 136.72 261.01 142.67 272.36
156.00 156.00 156.00 312.00 156.00 312.00 156.00 312.00
250

225

225

450

225

450

225

450

173.10 151.25 170.33 332.89 182.29 348.02 190.22 363.15
208.00 208.00 208.00 416.00 208.00 416.00 208.00 416.00

3.96
5.72
10

7.92 8.28
10.92 10.92
15

15

4.14
5.72

8.64
10.92

4.32
5.72

4.51
5.72

10

15

10

10

7.93 15.85 16.57 8.28 17.29 8.64 9.02
11.44 21.84 21.84 11.44 21.84 11.44 11.44
15

30

30

15

30

15

15

11.89 23.77 24.85 12.42 25.93 12.96 13.52
17.16 32.76 32.76 17.16 32.76 17.16 17.16
20

40

40

20

40

20

20

15.85 31.70 33.14 16.57 34.57 17.28 18.03
22.88 43.68 43.68 22.88 43.68 22.88 22.88
30

60

60

30

60

30

30

23.78 47.55 49.71 24.85 51.86 25.92 27.05
34.32 65.52 65.52 34.32 65.52 34.32 34.32
40

80

80

40

80

40

40

31.70 63.40 66.27 33.13 69.15 34.56 36.06
45.76 87.36 87.36 45.76 87.36 45.76 45.76
60

110

110

60

110

60

60

1.80
2.18
6
3.61
4.37
10
5.41
6.55
15
9.02
10.92
15
18.04
21.84
30
27.07
32.76
40
36.09
43.68
60
54.13
65.52
80
72.18
87.36
110

47.63 95.25 99.57 49.77 103.89 51.92 54.18 108.44
68.75 131.25 131.25 68.75 131.25 68.75 68.75 131.25
80

175

175

80

175

80

80 175

79.26 158.50 165.69 82.83 172.87 86.39 90.16 180.44
114.40 218.40 218.40 114.40 218.40 114.40 114.40 218.40
150

300

300

150

300

150

150 300

118.89 237.75 248.53 124.24 259.31 129.59 135.23 270.66
171.60 327.60 327.60 171.60 327.60 171.60 171.60 327.60
200

400

400

200

400

200

200 400

158.52 317.00 331.37 165.65 345.75 172.78 180.31 360.88
228.80 436.80 436.80 228.80 436.80 228.80 228.80 436.80

350

300

300

600

300

600

300

600

300

600

600

300

600

300

3

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

F-F

B-B

B-B

G-G

B-B

G-G

B-B

G-G

E-E

C-C

C-C

E-E

C-C

E-E

E-E

C-C

300 600

See chart on page 101.
NOTE: (1) Inputs and Outputs may be reversed; kVA capacity remains constant. All applications above bold face line are suitable for 50/60 Hz.
All applications below bold face line are suitable for 60 Hz only. (2) Connection Diagrams A-A and F-F cannot be reverse connected.
ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

99

SECTION

7

BUCK-BOOST TRANSFORMERS

SPECIFICATIONS
GROUP I
120 X 240 PRIMARY VOLTS — 12/24 SECONDARY VOLTS — 60 Hz
CATALOG
NUMBER

INSULATING
TRANSFORMER
RATING

SECONDARY MAXIMUM
CURRENT OUTPUT
12 V
24 V

HEIGHT

APPROX. DIMENSIONS
INCHES (CM.)
WIDTH

DEPTH

APPROX.
NET WEIGHT
LBS. (KG.)

DIMENSIONAL
DRAWINGS

T181047
T181048
T181049

0.05 kVA
0.10 kVA
0.15 kVA

4.16
8.32
12.52

2.08
4.16
6.25

6.41 (16.3)
7.16 (18.2)
7.16 (18.2)

3.14 (8.0)
3.89 (9.9)
3.89 (9.9)

3.05 (7.7)
3.67 (9.3)
3.67 (9.3)

4 (1.8)
5 (2.3)
7 (3.2)

A
A
A

T181050
T181051
T181052

0.25 kVA
0.50 kVA
0.75 kVA

20.80
41.60
62.50

10.40
20.80
31.25

8.68 (22.0)
9.06 (23.0)
9.68 (24.6)

4.08 (10.4)
4.37 (11.1)
4.75 (12.1)

3.88 (9.9)
4.20 (10.7)
4.51 (11.5)

10 (4.5)
15 (6.8)
19 (8.6)

B
B
B

T111683
T111684
T111685
T111686

1.00 kVA
1.50 kVA
2.00 kVA
3.00 kVA

83.20
125.00
166.00
250.00

41.60
62.50
83.20
125.00

10.50 (26.7)
11.62 (29.5)
13.00 (33.0)
11.50 (29.2)

5.50 (14.0)
5.50 (14.0)
5.50 (14.0)
10.31 (26.2)

5.13 (13.0)
5.13 (13.0)
5.13 (13.0)
7.13 (18.1)

24 (10.9)
30 (13.6)
38 (17.2)
55 (24.9)

B
B
B
C

T111687
T211688
T211689

5.00 kVA
7.50 kVA
10.00 kVA

416.60
625.00
833.00

208.00
312.50
416.60

14.38 (36.5)
20.81 (52.9)
20.81 (52.9)

10.31 (26.2)
11.12 (28.2)
11.75 (29.8)

7.13 (18.1)
10.84 (27.5)
11.59 (29.4)

75 (34.0)
125 (56.7)
160 (72.6)

C
D
D

HEIGHT

APPROX. DIMENSIONS
INCHES (CM.)
WIDTH

DEPTH

APPROX.
NET WEIGHT
LBS. (KG.)

DIMENSIONAL
DRAWINGS

GROUP II
120 X 240 PRIMARY VOLTS — 16/32 SECONDARY VOLTS — 60 Hz
CATALOG
NUMBER

INSULATING
TRANSFORMER
RATING

SECONDARY MAXIMUM
CURRENT OUTPUT
16 V
32 V

T181054
T181055
T181056

0.05 kVA
0.10 kVA
0.15 kVA

3.12
6.25
9.38

1.56
3.12
4.69

6.41 (16.3)
7.16 (18.2)
7.16 (18.2)

3.14 (8.0)
3.89 (9.9)
3.89 (9.9)

3.05 (7.7)
3.67 (9.3)
3.67 (9.3)

4 (1.8)
5 (2.3)
7 (3.2)

A
A
A

T181057
T181058
T181059

0.25 kVA
0.50 kVA
0.75 kVA

15.60
31.20
46.90

7.80
15.60
23.40

8.68 (22.0)
9.06 (23.0)
9.68 (24.6)

4.08 (10.4)
4.37 (11.1)
4.75 (12.1)

3.88 (9.9)
4.20 (10.7)
4.51 (11.5)

10 (4.5)
15 (6.8)
19 (8.6)

B
B
B

T113073
T113074
T113075
T113076

1.00 kVA
1.50 kVA
2.00 kVA
3.00 kVA

62.50
93.70
125.00
187.50

31.20
46.90
62.50
93.80

10.50 (26.7)
11.62 (29.5)
13.00 (33.0)
11.50 (29.2)

5.50 (14.0)
5.50 (14.0)
5.50 (14.0)
10.31 (26.2)

5.13 (13.0)
5.13 (13.0)
5.13 (13.0)
7.13 (18.1)

24 (10.9)
30 (13.6)
38 (17.2)
55 (24.9)

B
B
B
C

T113077
T213078
T213079

5.00 kVA
7.50 kVA
10.00 kVA

312.00
468.00
625.00

156.00
234.00
312.00

14.38 (36.5)
20.81 (52.9)
20.81 (52.9)

10.31 (26.2)
11.12 (28.2)
11.75 (29.8)

7.13 (18.1)
10.84 (27.5)
10.84 (27.5)

75 (34.0)
125 (56.7)
160 (72.6)

C
D
D

HEIGHT

APPROX. DIMENSIONS
INCHES (CM.)
WIDTH

DEPTH

APPROX.
NET WEIGHT
LBS. (KG.)

DIMENSIONAL
DRAWINGS

GROUP III
240 X 480 PRIMARY VOLTS — 24/48 SECONDARY VOLTS — 60 Hz
CATALOG
NUMBER

INSULATING
TRANSFORMER
RATING

SECONDARY MAXIMUM
CURRENT OUTPUT
24 V
48 V

T181061
T181062
T181063

0.05 kVA
0.10 kVA
0.15 kVA

2.08
4.16
6.24

1.04
2.08
3.12

6.41 (16.3)
7.16 (18.2)
7.16 (18.2)

3.14 (8.0)
3.89 (9.9)
3.89 (9.9)

3.05 (7.7)
3.67 (9.3)
3.67 (9.3)

4 (1.8)
5 (2.3)
7 (3.2)

A
A
A

T181064
T181065
T181066

0.25 kVA
0.50 kVA
0.75 kVA

10.40
20.80
31.20

5.20
10.40
15.60

8.68 (22.0)
9.06 (23.0)
9.68 (24.6)

4.08 (10.4)
4.37 (11.1)
4.75 (12.1)

3.88 (9.9)
4.20 (10.7)
4.51 (11.5)

10 (4.5)
15 (6.8)
19 (8.6)

B
B
B

T137920
T137921
T137922
T137923

1.00 kVA
1.50 kVA
2.00 kVA
3.00 kVA

41.60
62.40
83.20
125.00

20.80
31.20
41.60
62.50

10.50 (26.7)
11.62 (29.5)
13.00 (33.0)
11.50 (29.2)

5.50 (14.0)
5.50 (14.0)
5.50 (14.0)
10.31 (26.2)

5.13 (13.0)
5.13 (13.0)
5.13 (13.0)
7.13 (18.1)

24 (10.9)
30 (13.6)
38 (17.2)
55 (24.9)

B
B
B
C

T137924
T243570
T243571

5.00 kVA
7.50 kVA
10.00 kVA

208.00
312.00
416.00

104.00
156.00
208.00

14.38 (36.5)
20.81 (52.9)
20.81 (52.9)

10.31 (26.2)
11.12 (28.2)
11.75 (29.8)

7.13 (18.1)
10.84 (27.5)
11.59 (29.4)

75 (34.0)
135 (61.2)
160 (72.6)

C
D
D

All units have ground studs for use with non-metallic conduit. All sizes of 0.75 kVA and less are suitable for 50/60 Hertz. Additional field wiring box may be required when using
units as autotransformers.

100

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

7

BUCK-BOOST TRANSFORMERS

LOW VOLTAGE LIGHTING WIRING DIAGRAMS
K

H4

H3

X1

X2

L
H2

H1

X3

X4

H4

H3

X1

X2

GROUP I

M

SINGLE PHASE

H2

H1

H4

H3

X3

X4

X1

X2

H2

X3

GROUP II

Units Rated 120 x 240 V Input: 12/24 V Output

N

H1

X4

H4

H3

H2

H1

X1

X2

X3

X4

GROUP III

Units Rated 120 x 240 V Input: 16/32 V Output

Units Rated 240 x 480 V Input: 24/48 V Output

INPUT

OUTPUT

CONNECTION
DIAGRAM

120

12

K

120

16

K

240

24

K

120

24

L

120

32

L

240

48

L

240

12

M

240

16

M

480

24

M

240

24

N

240

32

N

480

48

N

INPUT

OUTPUT

CONNECTION
DIAGRAM

INPUT

OUTPUT

CONNECTION
DIAGRAM

Number of Leads per Termination
H1 H2 H3 H4 X1 X2 X3 X4
T213078

1

1

1

1

2

2

2

2

T213079

1

1

1

1

2

2

2

2

T243571

1

1

1

1

2

2

2

2

T211688

1

1

1

1

2

2

2

2

T211689

1

1

1

1

2

2

2

2

All leads with same designation (ex. X1, X1)
MUST be joined together for proper operation.

BUCK-BOOST DIMENSIONAL DRAWINGS
D

D

D

D

W

H

H

H

H

W

DESIGN A

W

DESIGN B

W

DESIGN C

DESIGN D

NOTE: All designs listed above are totally enclosed and suitable for UL 3R outdoor service.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

101

7

SECTION

BUCK-BOOST TRANSFORMERS

BUCK-BOOST WIRING DIAGRAMS

SINGLE PHASE

INPUT

FIG. C

H4

H3

INPUT

FIG. D

H2

X3

X4

H1

X2

X1

H4

H3

H2

OUTPUT

H4

H3

H2

X1

X2

X3

H4

H3

H1

FIG. H

H2

X4

H1

FIG. I

X1

X2

X3

H4

H3

H2

H2

FIG. J

X4

H1

H4

X1

X2

X3

H2

H3

H1

X3

TRANS. #3

H1
X4
X3
X2

X2
X1

1

X1

X1

#1

TR
AN
S.

#2

S.
AN
TR

X4

H1
H2

X4
X3
X2

H4
2
3

1

OUTPUT

OPEN DELTA

FIG. FF

H4

H3
X4

#2
S.
AN
R
T

H3

H2
H1

TRANS. #3

H1

H3

H4

X4
X3

H3
H2

H2

H3

H3 H3
H4

H4

H1

H2

H1
H2

X2

H2
H1
X3
X2

2

X1

3

OUTPUT ONLY

#2

Cannot be reverse connected.

X4

X1

X1
1

2

OUTPUT

3

WYE

OPEN DELTA

The symbol O used in these
connection diagrams indicates
where to field install the overcurrent protective device,
typically a fuse or circuit breaker.

3

X1

2
S. #
AN
TR

H1

TR
X4
AN
S.
#1

X3

3
X2
X3

FIG. DD

INPUT

1

X1
X2
X3

X2

3
OUTPUT

OPEN DELTA

INPUT ONLY

NEUTRAL

3

FIG. CC

OPEN DELTA
1

H4

H4

3
OUTPUT

2

2

H3
2

2

FIG. BB

H2

H3

H4

H4

1

X3
X2
X1
H1

H2

H3

TR
AN
S. #
1

WYE

X1
H1

H2

H3

TR
AN
S.

#2

H2

X2

X3
X2

X4

3

INPUT

FIG. EE

X3

X4

H1

OUTPUT

OUTPUT ONLY

H4

X3

H1

X1

3

FIG. AA

1

X4

X4

2
2

1

X3

1

X1

1

102

H2
H1

X2

#1

H2
H1
X4

X2

H3

TR
AN
S.

#2

3
X4
S.
AN
TR

H4

H3
H2

H3

X1

#1

S.
AN
TR

X1

2
S. #
AN
TR

H4

X4

H4

S.
AN
TR

H3 H3
H4

H1
H2

2
3

3
H4

INPUT

1

2

X1

TR
AN
S. #
1

X2
X3
H1
H2

INPUT

1

2

3

X2
X3

X4

THREE PHASE

INPUT

1
NEUTRAL

X3

X1

INPUT ONLY

1
2

X2

X2

X3

X4

OUTPUT

BUCK-BOOST WIRING DIAGRAMS

TR
X4
AN
S.
#1

X1

X2

X3

INPUT

OUTPUT

X1

X4

H1

OUTPUT

INPUT
H3

X1

INPUT

OUTPUT

H4

X2

X3

X4

OUTPUT

INPUT
H4

H2

H3

OUTPUT
FIG. G

X1

INPUT

FIG. F

X4

H1

X2

X3

OUTPUT

INPUT

FIG. E

X4

H1

FIG. GG

OPEN DELTA

IMPORTANT: Refer to the N.E.C.
(National Electrical Code) Article
450-4 for overcurrent protection
of an autotransformer. These
connection diagrams are packed
with each buck-boost transformer.
Do not use connections other
than those shown above.

SECTION

PANEL-TRAN ®
ZONE POWER
CENTERS
Zone power centers combine an Acme
encapsulated distribution transformer
with a power panel assembly in one
convenient UL-3R enclosure, for
indoor/outdoor use and is suitable for
use as service entrance equipment.
304 Stainless Steel Panel Tran® .................104-105
Features ............................................................. 104
Selection Charts–Single Phase ........................ 106
Circuit Breaker Data–Single Phase .................. 106
Selection Charts–Three Phase ......................... 107
Circuit Breaker Data–Three Phase ................... 107
Wiring Diagrams................................................ 108

8

SECTION

8

PANEL-TRAN® ZONE POWER CENTERS

Convenient Package Saves Costs and Space
Acme’s Panel-Tran® Power Center is a pre-wired combination
of a primary breaker disconnect, dry-type shielded
transformer, secondary breaker disconnect and a secondary
power panel all in one convenient package.
You save time, space and money by not having to individually
assemble, mount and wire these components. Simply add the
breakers of your choice and you’re ready to go.

FEATURES
600 volt class and below
Single and three phase, 480 and 600 volt primary, 60 Hz
Primary and secondary main circuit breakers provided
UL-3R enclosure
5 through 25 kVA single phase, 9 through 30 kVA
three phase
Meets or exceeds UL, CSA, NEMA, ANSI and
OSHA Standards
UL Listed and CSA Certified
PT061150005LS

Ten-year limited warranty
PTBA3150015LS

Shielded for cleaner power
Available in 304 stainless steel

304 STAINLESS STEEL
PANEL-TRAN®

ELECTRICAL CHARACTERISTICS
SINGLE PHASE
Primary Voltage:
480 Volts; 600 Volts Single Phase, 60 Hz
2 – 5% BNFC taps

FEATURES
3R Enclosure.
Abundant knockouts provided.

Secondary Voltage:
240/120 Volts Single Phase, 60 Hz
Three wire system

Encapsulated construction.
Single phase: 5 – 25 kVA.
Three phase: 9 – 30 kVA.

kVA’s Available:
5, 7.5, 10, 15 and 25 kVA

APPLICATIONS
Harsh industrial locations
Corrosive chemical exposure
Waste water treatment facilities
Coastal or marine applications with high salt spray level
Any application where painted cold roll steel is not
adequate

THREE PHASE
Primary Voltage:
480 Volts Delta; 600 Volts Delta Three Phase, 60 Hz
With 2 – 5% BNFC taps
Secondary Voltage:
208Y/120 Volts Three Phase, 60 Hz
Four wire system
kVA’s Available:
9, 15, 22.5 and 30 kVA
Insulation Class:
180°C, UL recognized system, 115°C rise
Regulation:
2 – 3% at unity power factor

104

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

8

PANEL-TRAN® ZONE POWER CENTERS

UL-3R Enclosures All Panel-Tran® enclosures are UL-3R
listed for indoor and outdoor use.
Transformer Assembly Acme totally encapsulated
distribution transformers are designed for general purpose
indoor/outdoor operation. Panel-Tran® can be installed in a
wide variety of atmospheric and environmental conditions. A
180°C, UL recognized insulation system is used.
Panel-Tran® units are electrostatically shielded to provide
transient voltage protection at no extra cost.
Panel Assembly The power panel assembly will
accommodate one-inch, 1, 2 or 3-pole, common trip, duplex
secondary branch circuit breakers and ground fault circuit
breakers. Per UL and NEC requirements, the Panel-Tran®
assembly comes fully equipped with primary and secondary
main circuit breakers. Branch circuit breakers should be
obtained from our local distributor once you have established
your branch circuit requirements.
Panel-Tran® — Why? Panel-Tran® eliminates the normal
tangled masses of secondary circuit feeders and gives your
industrial/commercial distribution systems new flexibility. Use
your high voltage bus to full advantage by putting power where
the problem is. Reduce cost — save space — keep flexible.
Panel-Tran — Where? Anywhere 120, 208 or 240 volt
branch circuits are required. Typically, Panel-Tran® is best
applied in situations similar to the following: Powering foreman
centers, vending machine areas, factory test set- ups, office
buildings, mining applications, assembly lines, portable or
temporary power sources, parking lots, small machine setups, light industrial areas, warehouses, and numerous other
locations. Use where your branch circuits may require future
change or expansion.
®

UL Listed Panel-Tran® has been listed by Underwriters’
Laboratories for both indoor and outdoor operation under their
unit substation classification, file number E-56936. In addition,
Panel-Tran® is UL listed as suitable for use as Service Entrance
Equipment.
Meets The NEC Panel-Tran® fully complies with Article
450-3 of the latest edition of the NEC.
Protection A primary main breaker protects the transformer
and acts as a disconnect device. This primary main breaker
has a high interrupting capacity to handle fault conditions. A
secondary main breaker, between the transformer and the
panel, is required by the N.E.C.
Branch Circuits Typical 1" snap in circuit breakers, regular
or duplex, must be field installed. They are not provided with
the Panel-Tran® unit. A secondary ground is provided within
the wiring compartment for accepting your branch unit. All of
the breakers, including the primary main, secondary main,
and branch circuit breakers are located in the lower section of
the Panel-Tran®. This lower section is protected by a hinged,
removable front cover which can be padlocked for safety.
Recommended Branch Breakers We suggest using
branch breakers of the same manufacture as the panel in
Panel-Tran®. Please contact the factory for the proper branch
breaker recommendation.
Acme reserves the right to change breaker and panel
manufacturers without notification.
Connections All Panel-Tran® connections will accept
copper or aluminum conductor.

FEATURES
Sturdy Unitized
Construction

Primary
Main
Hinged Removable
Cover
Secondary
Main

Tamper-Proof
Pad-Lockable
Captive Hardware

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

105

SECTION

8

PANEL-TRAN® ZONE POWER CENTERS

SELECTION CHARTS

SINGLE PHASE

GROUP I
480 PRIMARY VOLTS –– 240/120 SECONDARY VOLTS –– 1Ø, 60 Hz
KVA

CATALOG NO.

MAXIMUM SECONDARY
CIRCUITS
120 V
240 V

HEIGHT

APPROX. DIMENSIONS
INCHES (CM.)
WIDTH

DEPTH

APPROX.
NET WEIGHT
LBS. (KG.)

5.0

PT061150005LS

8

4

32.13 (81.6)

13.25 (33.7)

7.63 (19.4)

120 (54.4)

7.5

PT061150007LS

8

4

32.13 (81.6)

15.88 (40.3)

11.00 (27.9)

160 (72.6)

10.0

PT061150010LS

8

4

34.38 (87.3)

15.88 (40.3)

11.00 (27.9)

185 (83.9)

15.0

PT061150015LS

12

6

34.38 (87.3)

17.13 (43.5)

12.38 (31.4)

240 (109.0)

25.0

PT061150025LS

20

10

41.88 (106.4)

17.88 (45.4)

13.50 (34.3)

330 (150.0)

HEIGHT

APPROX. DIMENSIONS
INCHES (CM.)
WIDTH

DEPTH

APPROX.
NET WEIGHT
LBS. (KG.)

GROUP I – 304 SS
304 STAINLESS STEEL

480 PRIMARY VOLTS –– 240/120 SECONDARY VOLTS –– 1Ø, 60 Hz
MAXIMUM SECONDARY
CIRCUITS
120 V
240 V
(1-POLE)
(2-POLE)

KVA

CATALOG NO.

5.0

PT061150005SS

8

4

32.13 (81.6)

13.25 (33.7)

7.63 (19.4)

120 (54.4)

7.5

PT061150007SS

8

4

32.13 (81.6)

15.88 (40.3)

11.00 (27.9)

160 (72.6)

10.0

PT061150010SS

8

4

34.38 (87.3)

15.88 (40.3)

11.00 (27.9)

185 (83.9)

15.0

PT061150015SS

12

6

34.38 (87.3)

17.13 (43.5)

12.38 (31.4)

240 (109.0)

25.0

PT061150025SS

20

10

41.88 (106.4)

17.88 (45.4)

13.50 (34.3)

330 (150.0)

Circuit Breaker Data
480 VOLTS TO 240/120 VOLTS
1Ø
KVA

480 VOLTS
PRIMARY
BREAKER

240/120 VOLTS
SECONDARY
MAIN

MAXIMUM RATING
OF
SECONDARY BREAKERS

5.0

ED42B025L (25A)

Q225 (25A)

20 amps

7.5

ED42B025L (25A)

Q240 (40A)

30 amps

10.0

ED42B035L (35A)

Q250 (50A)

40 amps

15.0

ED42B050L (50A)

Q270 (70A)

60 amps

25.0

ED42B090L (90A)

Q2125 (125A)

100 amps

The number of secondary circuits shown is only a representation of circuits. Please contact the factory for exact number of secondary circuits available.
18,000 Amps RMS Symmetrical Interrupting Capacity.

106

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

8

PANEL-TRAN® ZONE POWER CENTERS

SELECTION CHARTS

THREE PHASE

GROUP A
480 DELTA PRIMARY VOLTS –– 208Y/120 SECONDARY VOLTS –– 3Ø, 60 Hz
MAX. SECONDARY CIRCUITS
1Ø
3Ø
120 V
208 V
(1-Pole)
(3-Pole)

HEIGHT

APPROX. DIMENSIONS
INCHES (CM.)
WIDTH

DEPTH

APPROX.
NET WEIGHT
LBS. (KG.)

KVA

CATALOG NO.

9.0

PTBA3150009LS

12

4

33.75 (85.7)

22.13 (56.2)

7.63 (19.4)

255 (116.0)

15.0

PTBA3150015LS

12

4

35.13 (89.2)

22.13 (56.2)

12.38 (31.4)

385 (175.0)

22.5

PTBA3150022LS

18

6

38.25 (97.2)

30.25 (76.8)

13.38 (34.0)

535 (243.0)

30.0

PTBA3150030LS

24

8

43.75 (111.1)

33.00 (83.8)

13.75 (34.9)

680 (308.0)

DEPTH

APPROX.
NET WEIGHT
LBS. (KG.)

GROUP A – 304 SS
304 STAINLESS STEEL

480 DELTA PRIMARY VOLTS –– 208Y/120 SECONDARY VOLTS –– 3Ø, 60 Hz
KVA

CATALOG NO.

MAX. SECONDARY CIRCUITS
1Ø
3Ø
120 V
208 V
(1-Pole)
(3-Pole)

HEIGHT

APPROX. DIMENSIONS
INCHES (CM.)
WIDTH

9.0

PTBA3150009SS

12

4

33.75 (85.7)

22.13 (56.2)

7.63 (19.4)

255 (116.0)

15.0

PTBA3150015SS

12

4

35.13 (89.2)

22.13 (56.2)

12.38 (31.4)

385 (175.0)

22.5

PTBA3150022SS

18

6

38.25 (97.2)

30.25 (76.8)

13.38 (34.0)

535 (243.0)

30.0

PTBA3150030SS

24

8

43.75 (111.1)

33.00 (83.8)

13.75 (34.9)

680 (308.0)

Circuit Breaker Data
480 VOLTS DELTA TO 208Y/120 VOLTS
3Ø

480 VOLTS
PRIMARY
BREAKER

208Y/120 VOLTS
SECONDARY
MAIN

MAXIMUM RATING
OF
SECONDARY BREAKERS

9.0

ED43B025L (25A)

Q330 (30A)

25 amps

15.0

ED43B040L (40A)

Q350 (50A)

40 amps

22.5

ED43B070L (70A)

Q370 (70A)

60 amps

30.0

ED43B090L (90A)

Q3100 (100A)

80 amps

KVA

The number of secondary circuits shown is only a representation of circuits. Please contact the factory for exact number of secondary circuits available.
10,000 Amps RMS Symmetrical Interrupting Capacity.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

107

SECTION

8

PANEL-TRAN® ZONE POWER CENTERS

PANEL-TRAN® ZONE POWER CENTERS WIRING DIAGRAMS

SINGLE PHASE

Wiring Diagram 1Ø 5-25 kVA
LINE 1

LINE 2

H1

H2

X3

X2

H3

H4

NEUTRAL

GROUND
WHEN
REQUIRED

X1

BOND
WHEN
REQUIRED
1
2

3
4

PANEL-TRAN® ZONE POWER CENTERS WIRING DIAGRAMS
3Ø 9 kVA
LINE B

LINE A

3Ø 15-30 kVA
LINE A

LINE C

PRIMARY MAIN
FURNISHED
H2 H5 H8

H1 H4 H7

X2

X1

X0

3

X3

BOND
WHEN
REQUIRED

4
5
6
GROUND
WHEN
REQUIRED

108

SECONDARY MAIN
FURNISHED

LINE B

H1

H9 H6 H3

NEUTRAL

1
2
3

THREE PHASE

X0

2

1

X1

LINE C

H2
3 2

1

X2

H3
3

2

1

X3
NEUTRAL

1
2
3
4
5
6

BRANCH CIRCUIT
BREAKERS ARE
ADDED BY INSTALLER

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

7
8
9
10
11
GROUND
12
WHEN
REQUIRED

BOND
WHEN
REQUIRED

SECTION

Air Conditioning,
Refrigeration
& Appliance
Transformers
An economical approach to changing
world voltages to 115V for operation
of air conditioners, refrigeration
equipment, appliances, business
machines, and related
equipment.
Construction Features................................110-111
Selection Instructions........................................ 111
Selection Charts................................................. 112

9

SECTION

9

AIR CONDITIONING, REFRIGERATION & APPLIANCE TRANSFORMERS

Air Conditioning, Refrigeration & Appliance Transformers
The transformers in this section are autotransformers
designed to change a wide range of voltages to the standard
motor voltages for domestic appliances, air conditioners,
and related equipment.
Correcting high or low supply voltage conditions to match
the voltage requirements of appliances and equipment aids
in safe, efficient operation.
These Acme autotransformers change or correct offstandard voltage that may be the result of:
1.	Line supply voltage not matching the appliance motor
	 nameplate voltage, (e.g., supply voltage is 380Y/220V, 		
	 three phase, four wire. Appliance motor operates on 110 V, 	
	 single phase. See schematic).
2.	Low voltage due to inadequate wiring capacity in the 		
	 electrical distribution system.
3.	Low voltage caused by distribution of power over a
	 long distance.
4.	High or low voltages supplied by the utility company.
Standard voltages and frequencies (Hz) vary throughout
many countries of the world. Since these autotransformers

are suitable for 50/60 Hz (cycle) service, they are
applicable in export trade where it is necessary to change
to a standard voltage for appliance operation.
These transformers are capable of adjusting voltage
only; they can’t change the frequency of a supply circuit.
However, in most instances, 60 Hz (cycle) equipment
can be operated from a 50 Hz supply if the voltage is
reduced approximately 8 -10%. For example, 115 V, 60 Hz
equipment can usually be operated on 50 Hz at 105 V.
Some common uses for Acme Air Conditioning, Refrigeration
and Appliance transformers include adjustment of offstandard voltage to the nominal voltages required to
operate:
		 a)	 Air conditioners, television receivers, all home
			 appliances.
		 b)	Hermetically sealed refrigeration motors.
		 c)	 Individual machine lighting, tool post grinders, fans,
			 convenience outlets for portable lights, power tools.
		 d)	Magnetic contactors, relays, AC motors and similar 		
			 devices requiring large starting (inrush) currents.

A
220V
110V

380V
N
380Y/220V, 3Ø
4 WIRE SUPPLY

ACME
APPLIANCE
TRANSFORMER

LOAD
(MOTOR, APPLIANCE, ETC.)

Construction Features

110

Acme appliance transformers are autotransformers. The input
(primary) winding is in electrical series connection with the
output (secondary) winding; the input and output are not
electrically isolated.

All units are constructed of core lamination processed
from annealed electrical grade silicon steel. This improves
transformer efficiency by keeping heat losses at a
minimum.

The autotransformer principle is the most economical for
appliance applications, since only the difference between
input voltage and output voltage is transformed. This results
in smaller size, reduced weight and lower cost.

Coils are precision machine wound and hand finished.
The core and coil combination is impregnated with electrical
grade varnish, then heat cured. This provides cool
operation and protects the transformer from moisture and
contamination. The result is long transformer life.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

9

AIR CONDITIONING, REFRIGERATION & APPLIANCE TRANSFORMERS

The transformers in this section will not cause harmonic
distortion to voltage or current wave shape.

All units are manufactured and tested in accordance with
National Electrical Manufacturers Association standards.

All transformers in Group C are equipped with a SAFETY
grounding feature on both the input and output side.

Some groups are equipped with primary voltage taps which
correct for voltage conditions constantly above or below the
nominal rating of the supply.

Connection for ground may be made through lead wires or
through plug and receptacle combinations where installed.

Selection Steps
1.	Determine the value of incoming line supply voltage and
	 frequency (50 or 60 Hz).

3.	Add all VA requirements of equipment to obtain total 		
	load. (All components must be of same voltage rating).

2.	Find the appliance or load equipment voltage rating and 		
	amperes from the nameplate or instruction sheet. Multiply 		
the two to obtain VA requirement of the load. If the power 	
requirements are listed only in watts, consider this the
same as VA. (Exception: electric discharge lighting such
as mercury vapor, fluorescent, etc. should always be
sized by volts x amps (VA). If only wattage ratings are
known, double this requirement to obtain VA ratings of
transformers needed).

4.	Add 10% for high starting current and overloading to 		
	obtain VA size of transformers.
5.	Select transformer from charts on following pages using 		
	combination of supply voltage (primary), voltage rating of 	
	equipment (secondary), load VA rating, and type of
	 connections desired.

Secondary Receptacle
Catalog # T160812

6’ (1.8 M) Primary Cord

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

111

SECTION

9

AIR CONDITIONING, REFRIGERATION & APPLIANCE TRANSFORMERS

	GROUP C
PRIMARY VOLTS — 200/220/240

SECONDARY VOLTS — 115, 50/60 Hz

RECEPTACLE

	
Approx. 	
Catalog 	 VA	Output		approx. dimensions		
	
No.	Rating	Amps		Inches (Cm.)		Ship weight	
				 Height	Width	Depth	 Lbs. (Kg.)	

	

T160830 ①	

	T160831 ①	
	T160832 ①	
	T160833 ①	
	T160834 ①	
	T160835 ①	

200	
300	
400	
500	
1000	
2000	

1.74	
2.61	
3.48	
4.35	
8.70	
17.40	

9.16 (23.3)	
9.16 (23.3)	
9.16 (23.3)	
9.68 (24.6)	
9.68 (24.6)	
11.50 (29.2)	

3.89 (9.9)	
3.89 (9.9)	
3.89 (9.9)	
4.75 (12.1)	
4.75 (12.1)	
7.81 (19.8)	

Connections
Feet (Meters)

3.67 (9.3)	

6 (2.7)	

6 (1.8) primary cord and secondary receptacle

3.67 (9.3)	

6 (2.7)	

6 (1.8) primary cord and secondary receptacle

3.67 (9.3)	

8 (3.6)	

6 (1.8) primary cord and secondary receptacle

4.51 (11.5)	

10 (4.5)	

6 (1.8) primary cord and secondary receptacle

4.51 (11.5)	

14 (6.4)	

6 (1.8) primary cord and secondary receptacle

7.13 (18.1)	

27 (12.2)	

6 (1.8) primary cord and secondary receptacle	

①	 All models can be reverse connected with input voltage applied to secondary terminals and output voltage available at primary terminals.
	 Do not exceed rating voltages. Transformer VA capacity will remain the same.

112

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

POWER
CONDITIONING
PRODUCTS
True-Power ® Constant Voltage
Regulators .250–15.0 kVA
True-Power ® Products........................................114
Specifications.....................................................115
Selection Charts..................................................115
Dimensional Drawings........................................116

10

SECTION
SECTION

10

CONSTANT VOLTAGE REGULATORS & POWER LINE CONDITIONERS

Acme® True-Power ® Constant Voltage Regulators
Acme True-Power® products consist of speciality designed
ferroresonant transformers. Although ferroresonant transformers
have been an economical solution to power problems for many
years, it took the skills of Acme’s highly regarded engineering
staff to refine it to meet today’s exacting requirements.
For example, typical ferroresonant transformers have an input
limited to 100 -130 V. Acme’s True -Power ® units have an input
range of +10/-20% around input voltage nominals of 120/208/240
and 480 volts. At 120 volt input, this relates to 95-130 volts.
The typical ferroresonant transformer has limited electrical noise
suppression capability. True-Power® power line conditioners
have the following noise attenuation capability:
		 Common Mode: 120 db
		 Transverse Mode: 60 db

FEATURES
	Reliable, regulated output voltage when input voltage varies,
even to brownout levels.

n

	Extended operation to 65% of nominal when operated at 60% of
full load.

n

	Noise rejection—effectively suppressing transient spikes and
surges—120 db common mode and 60 db transverse mode.

n

	Rapid response to line and load changes—5% variation in 8m
sec, 10% variation in 16m sec.

n

	Hold up time of 3m sec for complete loss of input power.

n

	Inherent overload and short circuit protection, without thermo
protectors, fuses or circuit breakers, for immediate recovery
when the overload is removed.

n

	Sinusoidal output features, less than 3% harmonic distortion,
improves input wave forms which have total harmonic distortions
of greater than 5%.

n

The typical ferroresonant transformer has an audible hum that
can be objectionable in most offices. Acme’s True-Power® power
line conditioners are encapsulated in epoxy to lower sound levels
below ANSI standard C 89.2.
The typical ferroresonant transformer has on output regulation of
± 3% for input line changes only. Acme’s True-Power® power line
conditioners have an output regulation of ± 3% for input line and
load changes, making them suitable for operation at any load
condition.

	Available in 250 through 15,000 VA in hardwired models.

n

	 Handle multiple primary input voltages.

n

	Illuminated ON/OFF switch, multiple output receptacles and six
foot input power cord on portable units.

n

	UL Listed.

n

	CSA Certified

n

APPLICATIONS
	 Industrial Automation and Control 					
	Equipment
n	 Electronic Test Equipment
n	Robotics
n	 X-Ray Eauipment
n	 Communications Equipment
n

Product Selection Guide
			
		
PROBLEM ENCOUNTERED	
			

114

Shielded
Isolation	
True-	
Transformer	 Power ®

SPS	 UPS

	 Power Failure		

—	

—	

X	

X

	 Widely Varying Source Voltage	

—	

X	

—	

X

	 Brown Outs		

—	

X	

X	

X

	 Switching Of Power Factor Correction Capacitors	

X	

X	

X	

X

	 Distorted Wave Shape Due To Harmonic Content	

—	

X	

—	

X

	 Common-Mode Transients	

X	

X	

—	

X

	 Transverse-Mode Transients	

—	

X	

X	

X

	 Voltage Spikes Due To Proximity Of
	 Welding Equipment Or Certain
	 Medical Diagnostic Equipment	

X	

X	

X	

X

	 Line Distortion Due To Noise Generated From
	 Occasional Lightning Strikes	

X	

X	

X	

X

	 Operation Of Computer Storage Devices Such
	 As Floppy Disks Or Winchester Drives
	 Generates Transients	

X	

X	

X	

X

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

10

SECTION
SECTION

CONSTANT VOLTAGE REGULATORS & POWER LINE CONDITIONERS

SPECIFICATIONS
	 Input (Primary)	

95-132 VAC (Hardwired) ②

		

166-228 VAC

		

192-264 VAC

		

384-528 VAC

	Phase:	

1 Phase

	 Output (Secondary)	

120/208/240 VAC (Hardwire)

	 Load Range	0-100%
	 Regulation	
± 3% for line/load changes
	 Attenuation	
120 db Common Mode Noise
		
60 db Transverse Mode Noise
	 Audible Noise	
Below ANSI std. C 89.2

SELECTION CHARTS
	 GROUP II
HARDWIRED MODELS — CONSTANT VOLTAGE REGULATORS

95-132 X 166-228 X 192-264 X 384-528 VOLT PRIMARY — 120/208/240 VOLT SECONDARY — 1Ø, 60 Hz
							approx. Dimensions ③					approx.	
Inches (Cm.)					
	
kVA	
Catalog					
Type	ship	 FigURE	 WIRING
	
Size	
Number	A	B	C	D	 E	 F	G	H	 J	Mtg.	
Weight		DIAGRAMS
			Height	 Width	 Depth								
Lbs. (Kg.)		
See Page 147
	 0.25	
T169430	
15.50	
6.30	
5.80	
5.63	
8.13	
9.30	
1.2	
.41 x .81	
5.00	
F&W	
37	
II	
16
			
(39.4)	 (16.0)	 (14.7)	 (14.3)	
(20.7)	 (23.6)	
(3.0)	 (1.0 x 2.1)	 (12.7)		
(16.8)
	 0.35	
T169431	
17.00	
7.00	
7.30	
5.63	
8.13	
9.40	
2.3	
.41 x .81	
6.50	
F&W	
51	
II	
16
			
(43.2)	 (17.8)	 (18.5)	 (14.3)	
(20.7)	 (23.9)	
(5.8)	 (1.0 x 2.1)	 (16.5)		
(23.1)
	 0.50	
T169432	
17.00	
7.00	
7.30	
5.63	
8.13	
9.40	
2.3	
.41 x .81	
6.50	
F&W	
53	
II	
16
			
(43.2)	 (17.8)	 (18.5)	 (14.3)	
(20.7)	 (23.9)	
(5.8)	 (1.0 x 2.1)	 (16.5)		
(24.0)
	 0.75	
T169433	
17.00	
7.00	
7.30	
5.63	
8.13	
9.40	
2.3	
.41 x .81	
6.50	
F&W	
65	
II	
16
			
(43.2)	 (17.8)	 (18.5)	 (14.3)	
(20.7)	 (23.9)	
(5.8)	 (1.0 x 2.1)	 (16.5)		
(29.5)
	 1.00	
T169434	
18.50	
6.50	
8.55	
5.63	
8.13	
9.50	
2.3	
.41 x .81	
7.75	
F&W	
82	
II	
16
			
(47.0)	 (16.5)	 (21.7)	 (14.3)	
(20.7)	 (24.1)	
(5.8)	 (1.0 x 2.1)	 (19.7)		
(37.2)
	 2.00	
T169435	
19.00	 10.50	
10.20	
6.00	
12.00	
13.25	
2.3	
.44 x .63	
9.40	
F&W	
142	
III	
16
			
(48.3)	 (26.7)	 (25.9)	 (15.2)	
(30.5)	 (33.7)	
(5.8)	 (1.1 x 1.6)	 (23.9)		
(64.4)
	 3.00	
T169436	
19.00	 10.50	
10.20	
6.00	
12.00	
13.25	
2.3	
.44 x .63	
9.40	
F&W	
176	
III	
16
			
(48.3)	 (26.7)	 (25.9)	 (15.2)	
(30.5)	 (33.7)	
(5.8)	 (1.1 x 1.6)	 (23.9)		
(79.8)
	 5.00	
T169437	
22.00	 12.54	
12.20	
6.00	
14.00	
15.25	
2.3	
.44 x .63	
11.40	
F&W	
295	
III	
16
			
(55.9)	 (31.9)	 (31.0)	 (15.2)	
(35.6)	 (38.7)	
(5.8)	 (1.1 x 1.6)	 (29.0)		
(134.0)
	
10.00	T169438	 23.06	27.31	24.06	18.00	 25.50	 —	 —	
.56	
—	 F&W ①	605	 IV	
16
			
(58.6)	(69.4)	(61.1)	(45.7)	 (64.8)			
(1.4)			
(274.0)
	
15.00	T169439	 23.06	40.13	24.06	18.00	 38.31	 —	 —	
.56	
—	
F	
880	
IV	
16
			
(58.6)	(101.9)	 (61.1)	 (45.7)	 (97.3)			
(1.4)			
(399.0)

F = Floor	 W = Wall	
① Wall mounting brackets required for this size. Refer to Page 133.
② All hardwired models will accommodate these primary input voltages.
③ Dimensions not suitable for construction. Contact factory.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

115

SECTION
SECTION

10

CONSTANT VOLTAGE REGULATORS & POWER LINE CONDITIONERS

CONSTANT VOLTAGE REGULATORS DIMENSIONAL DRAWINGS
FIGURE II & III
F

C

E

J

B
G
D
A

FRONT VIEW

SIDE VIEW

FIGURE IV
C

B

A

E

FRONT VIEW

116

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

D

SIDE VIEW

SECTION

POWERWISE C3
Acme High Efficiency Powerwise
C3 transformers provide the
perfect solution for LEED and green
facilities or end users looking for
the lowest total cost of ownership
in transformer design. See
acmepowerdist.com/c3 for energy
savings calculator.
CSL-3 Super Efficient Transformers.................. 118
General Description and Features.............118-119
Selection Charts................................................. 120

11

SECTION

11

POWERWISE C3 TRANSFORMER

A New Standard in Transformer Efficiency
In January 2007, the Energy Policy Act of 2005 (EPAct 2005) set the minimum
efficiency level (TP1) for transformers. While this standard sets a minimum
performance level, transformers rated at TP1 do not provide the greatest
efficiency or offer the lowest life cycle cost.
Acme POWERWISE C3 transformers are 30% better performing in efficiency
than standard TP1 transformers. Thanks to a more efficient core and highergrade electrical steel that minimizes losses, these energy-efficient units even
exceed the requirements of the US Department of Energy Candidate Standard
Level (CSL) 3 performance standard, commonly referred to as “C3.”
Depending on the kVA size, this increase in efficiency can save thousands of
dollars in energy costs per transformer. Whether you are looking to upgrade
your older pre-TP1 transformers or specify the highest-efficiency transformers
on your new project, Acme POWERWISE C3 transformers can deliver the
power and performance you need.

	

15 kVA	

CSL-3 Efficiency	

30 kVA	

45 kVA	

75 kVA	

112.5 kVA	

150 kVA	

225 kVA	

300 kVA	

500 kVA

97.9%	 98.3%	 98.4%	 98.6%	98.7%	98.8%	 99.0%	 99.0%	 99.1%

Within a typical facility, increasing the efficiency of your transformers can provide significant savings in a short period of time.
Payback usually occurs within 2.5 to 3.5 years, thanks in large part to our no-load losses. Because no-load losses are present
even when the transformers are lightly loaded, they are critical to overall efficiency — and POWERWISE losses are up to 40%
less than traditional TP1 designs.
	

15 kVA	

No-Load Loss	

30 kVA	

45 kVA	

75 kVA	

112.5 kVA	

150 kVA	

225 kVA	

300 kVA

70W	 90W	 130W	 160W	240W	280W	 370W	 550W

EVALUATING TOTAL COST OF OWNERSHIP
Total Cost of Ownership = Initial Cost + Yearly Energy Cost
Cost over the life of the installation should be the most important factor when deciding which technology to use. Since the typical
transformer lasts 25 to 30 years, the total life cycle cost far outweighs the initial purchase price of the transformer. The electricity
wasted by low initial-cost transformers can amount to millions of wasted kilowatt hours over the operational life of the installation.

TYPICAL APPLICATIONS INCLUDE:
	 Educational Facilities (K–12/University)

n

	 Government Buildings

n

	 Manufacturing Facilities

n

	 Office and Commercial Buildings

n

	 Healthcare/Hospital/Medical Office Buildings

n

	 Financial Institutions

n

	 Data Processing Centers

n

	 Wastewater and Sewage Treatment Facilities

n

	 Correctional Facilities

n

	 Industrial Facilities

n

118

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

SECTION

11

POWERWISE C3 TRANSFORMER

APPLICATIONS

SPECIFICATIONS

The Acme POWERWISE C3 transformer is the ideal

Windings............................Copper

transformer for commercial environments where

Insulation Class..................220° C

energy efficiency is a primary concern. It is a perfect

Degree Rise.......................115° C or 130° C

choice for K through 12, college, university, healthcare,

Noise Levels......................Per NEMA ST-20 -5dB low noise

governmental and commercial buildings where the

Rated for 60 Hertz .............

total life cycle cost of the facility and its electrical
system is a priority.

DESIGN
The Acme POWERWISE C3 sets new standards for
efficiency and reliability. Through more efficient core
material and higher-grade electrical steel, losses are
minimized and performance is maximized. Acme
POWERWISE C3 transformers are copper wound,
3-phase common-core, dry type ventilated isolation
transformers. Each transformer is meticulously
constructed to ANSI/IEEE Standards and is UL
and CSA listed.

K Rating.............................K-13
Voltage Taps......................Voltage Taps: 15 through 500 kVA
(2)
2-1/2% ANFC, (4) 2-1/2% BNFC
Neutral Conductor.............200% Rated
Electrostatic Shield............Standard
Enclosure...........................Ventilated NEMA 2 (NEMA 3R
available with drip shield)

ADDITIONAL FEATURES & BENEFITS
	Exceeds US DOE CSL-3 efficiency to help you reduce
electrical waste and provide sustainability in your
electrical design

n

	Significantly exceeds TP1 efficiency for low operating
cost over the life of the transformer

n

ENVIRONMENTAL EFFICIENCY
Acme POWERWISE transformers are the most efficient
commercially available transformers. Because they
generate lower losses, they reduce power drawn from
generating stations, resulting in lower greenhouse gas

	Optimized design provides maximum reliability and
proven performance

n

	Produced in an ISO 9001 facility to ensure high quality
and rigorous testing standards

n

emissions and less smog. The result is a win for the
environment and a win in terms of lowest transformer
life cycle costs.

WARRANTY
Acme POWERWISE C3 transformers are subjected to
rigorous quality electrical and insulation tests in our
ISO 9001-certified facility, and they are backed by our
25-year pro-rated warranty.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

119

SECTION

11

POWERWISE C3 TRANSFORMER

SELECTION CHARTS	
	 GROUP D6
POWERWISE C3 - 115 C RISE - COPPER WINDINGS

CSL 3 Efficiency (exceeds TP1)
480 DELTA PRIMARY VOLTS - 208Y120 SECONDARY VOLTS - MAY BE USED ON A 4 WIRE 480Y/277 VOLT SUPPLY - 3Ø, 60 Hz
				
APPROX. DIMENSIONS ②		
	 kVA	
CATALOG NO.		
Inches (Cm.)		
			
HEIGHT	WIDTH	 DEPTH	

APPROX.	
SHIP WEIGHT	
Lbs. (Kg.)	

TYPE MTG.	
W – Wall	
F – Floor	

Weather	
Shield	
P/N	

Wiring Diagrams &
Design Figures
Begin on Page 154

	 15	

TPC3533111S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

350 (158.8)	

F	

WSA1	

22-E

	 30	

TPC3533121S	

29.41 (74.7) 	

28.15 (71.5)	

22.37 (56.8)	

385 (174.6)	

F	

WSA2	

22-E

	 45	

TPC3533131S	

29.41 (74.7) 	

28.15 (71.5)	

22.37 (56.8)	

455 (206.4)	

F	

WSA2	

22-E

	 75	

TPC3533141S	

35.38 (89.9)	

31.90 (81.0)	

26.88 (68.3)	

585 (265.4)	

F	

WSA3	

22-E

	112.5	

TPC3533151S	

41.52 (105.5)	

33.06 (84.0)	

29.87 (75.9)	

1020 (462.7)	

F	

WSA4	

22-E

	 150	

TPC3533161S	

41.52 (105.5)	

33.06 (84.0)	

29.87 (75.9)	

1260 (571.5)	

F	

WSA4	

22-E

	 225	

TPC3533171S	

41.52 (105.5)	

33.06 (84.0)	

29.87 (75.9)	

1410 (639.6)	

F	

WSA4	

22-E

	 300	

TPC3533181S	

45.70 (116.1)	

39.50 (100.3)	

35.50 (90.2)	

1860 (843.7)	

F	

WSA5	

22-E

	 500	

TPC3533191S	

62.95 (159.9)	

54.00 (137.2)	

41.88 (106.4)	

3350 (1519.5)	

F	

WSA7	

22-G

	 GROUP D7
POWERWISE C3 - 130 C RISE - COPPER WINDINGS

CSL 3 Efficiency (exceeds TP1)
480 DELTA PRIMARY VOLTS - 208Y120 SECONDARY VOLTS - MAY BE USED ON A 4 WIRE 480Y/277 VOLT SUPPLY - 3Ø, 60 Hz
				
APPROX. DIMENSIONS ②		
	 kVA	
CATALOG NO.		
Inches (Cm.)		
			
HEIGHT	WIDTH	 DEPTH	

120

APPROX.	
SHIP WEIGHT	
Lbs. (Kg.)	

TYPE MTG.	
W – Wall	
F – Floor	

Weather	
Shield	
P/N	

Wiring Diagrams &
Design Figures
Begin on Page 154

	15.0	

TPC3533113S	

29.41 (74.7)	

28.15 (71.5)	

22.37 (56.8)	

350 (158.8)	

F	

WSA1	

22-E

	30.0	

TPC3533123S	

29.41 (74.7) 	

28.15 (71.5)	

22.37 (56.8)	

380 (172.4)	

F	

WSA2	

22-E

	45.0	

TPC3533133S	

29.41 (74.7) 	

28.15 (71.5)	

22.37 (56.8)	

440 (199.6)	

F	

WSA2	

22-E

	75.0	

TPC3533143S	

35.38 (89.9)	

31.90 (81.0)	

26.88 (68.3)	

560 (254.0)	

F	

WSA3	

22-E

	112.5	

TPC3533153S	

41.52 (105.5)	

33.06 (84.0)	

29.87 (75.9)	

1000 (453.6)	

F	

WSA4	

22-E

	150.0	

TPC3533163S	

41.52 (105.5)	

33.06 (84.0)	

29.87 (75.9)	

1220 (553.4)	

F	

WSA4	

22-E

	225.0	

TPC3533173S	

41.52 (105.5)	

33.06 (84.0)	

29.87 (75.9)	

1385 (628.2)	

F	

WSA4	

22-E

	300.0	

TPC3533183S	

45.70 (116.1)	

39.50 (100.3)	

35.50 (90.2)	

1820 (825.5)	

F	

WSA5	

22-E

	500.0	

TPC3533193S	

62.95 (159.9)	

54.00 (137.2)	

41.88 (106.4)	

3250 (1474.2)	

F	

WSA7	

22-G

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

D

GENERAL

ACME ®
TRANSFORMER™
GENERAL
INFORMATION
Design Figures, Wiring Diagrams,
Accessories, Specification
Guides, Industry Standards and
Alphanumerical Catalog
Number Index
Design Figures..........................................................122
Wiring Diagrams...............................................123–132
Transformer Accessories.................................133–134
Specification Guides........................................135–138
Industry Standards...................................................139

W

Alphanumerical Catalog Number Index..........140–144

H

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
DESIGN
DIAGRAMS
FIGURES

GENERAL

Design Figures
Sections I, II, III & IV

D

These drawings are for reference only.
Contact factory for certified drawings.

H

W

Design A

D

D

D

W
H

H

H

W

W

Design B

Design C

Design D

D

D

D
H

H
H

W

W

W

Design E

Design F

Design G

D
D

H

W

Design H
122

H

W

Design I
ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
WIRING
DIAGRAMS
DIAGRAMS

GENERAL

Wiring DiagramsSections I, II, III & IV
		 PRIMARY: 240 X 480
		
SECONDARY: 120/240
		
TAPS: None

		
		
		

1

2

H4

H1
H3

H2

X2

X3

X4

H4

Connect
Secondary
Lines To

X1-X4
X1-X2-X4
X1-X4

H2

X2

X3

H2 H3 H4

X2
X4

H7 H8 H9

X1-X4
X1-X2-X4
X1-X4

H4
1

2

3

4

X2

X3
X4

X1

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 216	H1-H10	
H1 to H9
			
H10 to H2
	 228	
H1 to H8	
H1-H10	
			
H10 to H3
	 240	
H1 to H7	
H1-H10	
			
H10 to H4
	 252	
H1 to H6	
H1-H10	
			
H10 to H5
	 432	
H1-H10	
H2 to H9
	 444	
H1-H10	
H3 to H9
	 456	
H1-H10	
H3 to H8
	 468	
H1-H10	
H4 to H8
	 480	
H1-H10	
H4 to H7
	 492	
H1-H10	
H5 to H7
	 504	
H1-H10	
H5 to H6
Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

Connect
Secondary
Lines To

H2

H1

Connect
Secondary
Lines To

X1-X4
X1-X3-X4
X1-X4

5

6

7

H6

H7

X3

X4

5

H3

H3

X2

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 480	
H1-H4	
H2 to H3
	 240	
H1-H3 &	
		
H2-H4
	Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

H8

H4 H5
H2

X1

H10

PRIMARY: 240 X 480
SECONDARY: 120/240
TAPS: 2, 2 1/2 % ANFC, 2, 2 1/2 % BNFC
H1

		
PRIMARY: 240 X 480
		
SECONDARY: 120/240
		 TAPS: 2, 2 1/2 % ANFC, 2, 2 1/2 % BNFC

4

H5 H6

H3

X4

		
PRIMARY: 240 X 480
		
SECONDARY: 120/240
		 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC
H1

3

H1

X1

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 480	
H1-H4	
H2 to H3
	 240	
H1-H3 &	
		
H2-H4
	Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

		
		
		

PRIMARY: 240 X 480
SECONDARY: 120/240
TAPS: None

X1

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 252	H1-H8	
H1 to H5
			
H4 to H8
	 240	
	
H1
to H5	
H1-H7
			
H3 to H7
	 228	
H1 to H5	
H1-H6	
			
H2 to H6
	 504	
H1-H8	
H4 to H5
	 492	
H1-H8	
H3 to H5
	 480	
H1-H7	
H3 to H5
	 468	
H1-H7	
H2 to H5
	 456	
H1-H6	
H2 to H5
Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

Connect
Secondary
Lines To

X1-X4
X1-X2-X4
X1-X4

8

X3
X1

		
		
		

		
Connect		
Connect
	 rimary	
P
Primary	
Inter-	
Secondary
	 Volts	
Lines To	
Connect	
Lines To
	 216	H1-H4	
H1, H3, 8 &
			
H2, H4, 1
	 228	
	
H1,
H3, 7 &	
H1-H4
			
H2, H4, 2
	 240	
H1, H3, 6 &	
H1-H4	
			
H2, H4, 3
	 252	
	
H1,
H3, 5 &	
H1-H4
			
H2, H4, 4
	 432	
H1-H4	 H2, 1 & H3, 8
	 444	
H1-H4	 H2, 2 & H3, 8
	 456	
H1-H4	 H2, 2 & H3, 7
	 468	
H1-H4	 H2, 3 & H3, 7
	 480	
H1-H4	 H2, 3 & H3, 6
	 492	
H1-H4	 H2, 4 & H3, 6
	 504	
H1-H4	 H2, 4 & H3, 5
Secondary Volts
	 240		
X2 to X3	
X1-X4
	120/240		
X2 to X3	
X1-X2-X4
	 120		
X1 to X3	
X1-X4
			
X2 to X4

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

6

PRIMARY: 208
SECONDARY: 120/240
TAPS: 2, 5% BNFC
H1

H4
H2

X2

H3

X3

X4

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 208	
H1 & H4	
	 198	
H1 & H3
	 187	
H1 & H2
	Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

X1

Connect
Secondary
Lines To

X1-X4
X1-X2-X4
X1-X4

123

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
WIRING
DIAGRAMS
DIAGRAMS

GENERAL
		
		
		

7

PRIMARY: 277
SECONDARY: 120/240
TAPS: 2, 5% BNFC

		
		
		

8

H1
H2

X2

H4

H1

X1

X4

X2

X2

13

X4

X3

Connect
Secondary
Lines To

X1-X4
X1-X2-X4
X1-X4

X1

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 240	
H1-H4	
H2 to H3
	 120	
H1-H3 &	
		
H2-H4
	Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

124

2

3

X2

H4

X2

X1-X4
X1-X2-X4
X1-X4

Connect
Secondary
Lines To

X1-X4
X1-X2-X4
X1-X4

X1

Connect
Secondary
Lines To

X1-X4
X1-X2-X4
X1-X4

PRIMARY: 240
SECONDARY: 120/240
TAPS: None
1

3

H2
1

PRIMARY: 120 x 240
SECONDARY: 120/240
TAPS: None
H2

Connect
Secondary
Lines To

PRIMARY: 600
SECONDARY: 120/240
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC

X4

X3

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	600	
H1-H2
	Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

12

H1

X1

H3

X2

		
		
		

H3

X3

H1

H2

X4

X1

X1-X4

11

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	600	
H1-H4	
	570	
H1-H3
	540	
H1-H2
	Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

		
		

X1-X4
X1-X2-X4

H4

X4

H1

X3

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	600	
H1-H2
	Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

		
		
		

H1

		

Connect
Secondary
Lines To

PRIMARY: 600
SECONDARY: 120/240
TAPS: 2, 5% BNFC
H2

PRIMARY: 600
SECONDARY: 120/240
TAPS: None

H2

X3

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 277	
H1 & H4	
	 263	
H1 & H3
	 250	
H1 & H2
	Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

10

9

H3

X4

		
		
		

		
		
		

PRIMARY: 600
SECONDARY: 120/240
TAPS: None

4

5

2

6

1

X3
X1

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	540	
H1-H2	
1-6
	555	
H1-H2	
1-5
	570	
H1-H2	
2-6
	585	
H1-H2	
2-5
	600	
H1-H2	
3-5
	615	
H1-H2	
2-4
	635	
H1-H2	
3-4
Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

Connect
Secondary
Lines To

3

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	240	
1-3
	Secondary Volts
	240			
	 120			
	120/240			
		
		
		

14

1-3
1-2 or 2-3
1-2-3

EXPORT MODEL
PRIMARY: 190-220 x 380-440
SECONDARY: 120/240
H1

X1-X4
X1-X2-X4

H10

H5 H6
H2 H3 H4

X1-X4

Connect
Secondary
Lines To

X2

H7 H8 H9

X3

X4

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 190	
H1 to H6
H1 & H7	
			
H2 to H7
	 200	
	
H1
to H6
H1 & H8
			
H3 to H8
	 208	
H1 to H6
H1 & H9	
			
H4 to H9
	 220	
	
H1
to H6
H1 & H10 H5 to
			
H10
	 380	
H1 & H7	
H2 & H6
	 400	
H1 & H8	
H3 & H6
	 416	
H1 & H9	
H4 & H6
	 440	
H1 & H10	
H5 & H6
Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

X1

Connect
Secondary
Lines To

X1-X4
X1-X2-X4
X1-X4

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
WIRING
DIAGRAMS
DIAGRAMS

GENERAL
		
		
		

15

EXPORT MODEL
PRIMARY: 190-220 x 380-440
SECONDARY:120/240
H4
1

2

3

4

X2

5

6

7

X1

Connect
Secondary
Lines To

X1-X4
X1-X2-X4
X1-X4

H1

X1

H2

3 2 1

X2

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 240	
H1, H2, H3	
1
	 228	
H1, H2, H3	
2
	 216	
H1, H2, H3	
3
	Secondary Volts
	 208			
	 120			
	1 phase			
				

H3

3 2 1

X3

Connect
Secondary
Lines To

12
13

X4

		 Input Connections	Insulate
				
	 Volts		Connect	
	
1, 3, 6, 8 to A	
120	
		
2, 5, 7, 10 to B
			 1, 6 to A
	
4, 9 to B	
208		 2,
			
3 to C
			 7, 8 to D
			 1, 6 to A
	
10 to B	
240		 5,
			
2, 3 to C
			 7, 8 to D
			 1 to A
			 10 to B	
	
480		 2, 3 to C	
			 5, 6 to D
			 7, 8 to E
		 Output Connections		
				
	 Volts		Connect	
			 11 to F
	
120		 12 to G	
			 14 to H
			 11 to F
	 120/240		 12 to G	
			 14 to H
			 11 to F
	
208		 12 to G	
			 13 to H
			 11 to F
	
240		 12 to G	
			 14 to H

&
Isolate
4, 9
5, 10

4, 9

4, 9
Output
Lines
To
F, G

		
		
20
		

5 4 3 2 1

X0

X1

H2

5 4 3 2 1

X2

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 252	
H1, H2, H3	
1
	 246	
H1, H2, H3	
2
	 240	
H1, H2, H3	
3
	 234	
H1, H2, H3	
4
	 228	
H1, H2, H3	
5
	Secondary Volts
	 208			
	 120			
	1 phase			
				

X2

H2

X3

X1

PRIMARY: 380 Volts Delta
SECONDARY: 220Y/127 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC
H1

F, G, H
F, H
F, H

PRIMARY: 240 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2, 2 1/2 % ANFC, 2, 2 1/2 % BNFC
H1

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

4 5 6

		 Connect		
Connect
	Primary	 Primary	
Inter-	
Secondary
	 Volts	
Lines To	
Connect	
Lines To
	 218	
H1 & H2	
3 to 4		
	 213	
H1 & H2	
2 to 4
	 208	
H1 & H2	
3 to 5
	 203	
H1 & H2	
2 to 5
	 198	
H1 & H2	
1 to 5
	 192	
H1 & H2	
2 to 6
	 187	
H1 & H2	
1 to 6
Secondary Volts
	 240		
X2 to X3	
X1-X4
	120/240		
X2 to X3	
X1-X2-X4
	 120		
X1 to X3	
X1-X4	
			
X2 to X4

NOTE: To prevent externally shorting, all leads marked
“INSULATE” must be individually capped with wire
nuts or equivalent. Insulate leads individually!

		

1 2 3

14

9
10

		
		
19

PRIMARY: 208 Volts
SECONDARY: 120/240 Volts
TAPS:
H1

F
G
H

7
8

PRIMARY: 240 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2, 5% BNFC

X0

11

4
5
6

X3

X4

3 2 1

17

1
2
3

A
B
C
D
E

8

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 190	
H3, 8 &
H1 & H4	 H1,
			
H2, H4, 1
	 200	
H3, 7 &
H1 & H4	 H1,
			
H2, H4, 2
	 208	
H3, 6 &
H1 & H4	 H1,
			
H2, H4, 3
	 220	
H3, 5 &
H1 & H4	 H1,
			
H2, H4, 4
	 380	
H1 & H4	 H2, H3, 1, 8
	 400	
H1 & H4	 H2, H3, 2, 7
	 416	
H1 & H4	 H2, H3, 3, 6
	 440	
H1 & H4	 H2, H3, 4, 5
Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

		

		
		
		

POWER LINE CONDITIONER
INPUT LINE

H2

H3
H1

		
		
18

16

		

H3

5 4 3 2 1

X3

Connect
Secondary
Lines To

76 5 4 3 21

X0

X1

H2
76 5 4 3 21

X2

H3
76 5 4 3 21

X3

		
Connect		
Connect
	Primary	
Primary	
Inter-	
Secondary
	 Volts	
Lines To	
Connect	
Lines To
	 399	
H1, H2, H3	
1
	 390	
H1, H2, H3	
2
	 380	
H1, H2, H3	
3
	 371	
H1, H2, H3	
4
	 361	
H1, H2, H3	
5
	 352	
H1, H2, H3	
6
	 342	
H1, H2, H3	
7		
	Secondary Volts
	 220			
X1, X2,X3
	
			
X1 to X0
127
	1 phase			
X2 to X0
				
X3 to X0

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

125

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
WIRING
DIAGRAMS
DIAGRAMS

GENERAL
		
		
		

21

		
		
		

PRIMARY: 480 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2, 5% BNFC
H1

22

H2

3 2 1

PRIMARY: 480 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC
H1

H3

3 2 1

7 6 5 4 3 2 1

3 2 1

		
		

23

H2

7 6 5 4 3 2 1

PRIMARY: 120/208/240/277 Volts
SECONDARY: 120/240 Volts
H2 H3 H4 H5

H1

H3

7 6 5 4 3 2 1

X4
X0

X2

X1

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 480	
H1, H2, H3	
1
	 456	
H1, H2, H3	
2
	 432	
H1, H2, H3	
3
	Secondary Volts
	 208			
	 120			
	1 phase			
				
		
		
		

24

321

321

X1

27

		
		
		

25

2 4 6

H1

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

2 4 6

H3

5 3 1

2 4 6

H2

3 2 1

X4

X1

H2

5 3 1

X4

X2

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 504	
H1, H2, H3	
1 to 2
	 492	
H1, H2, H3	
2 to 3
	 480	
H1, H2, H3	
1 to 4
	 468	
H1, H2, H3	
3 to 4
	 456	
H1, H2, H3	
1 to 6
	 444	
H1, H2, H3	
3 to 6
	 432	
H1, H2, H3	
5 to 6
	Secondary Volts
	 240			
	 120			
				

126

		
		
		

26

3 2 1

X2

X3

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 480	
H1, H2, H3	
1
	 456	
H1, H2, H3	
2
	 432	
H1, H2, H3	
3
	Secondary Volts
	 240			
	 120			
				
		
		
		

28

Connect
Secondary
Lines To

X1, X2, X3
X1, X4 or
X2, X4

PRIMARY: 600 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2, 5% BNFC
H2

Connect
Secondary
Lines To
X0

H2

7 6 5 4 3 2 1

X4

29

X1-X4
X1-X2-X4
X1-X4

H3

X3

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 504	
H1, H2, H3	
1
	 492	
H1, H2, H3	
2
	 480	
H1, H2, H3	
3
	 468	
H1, H2, H3	
4
	 456	
H1, H2, H3	
5
	 444	
H1, H2, H3	
6
	 432	
H1, H2, H3	
7
	Secondary Volts
	 240			
	 120			
				
		
		
		

Connect
Secondary
Lines To

7 6 5 4 3 2 1

X2

Connect
Secondary
Lines To

X1, X2, X3
X1, X4 or
X2, X4

PRIMARY: 600 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC
H1

7 6 5 4 3 2 1

H2

7 6 5 4 3 2 1

H3

7 6 5 4 3 2 1

H3

3 2 1

3 2 1

3 2 1

X1

X2

X3

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 600	
H1, H2, H3	
1
	 570	
H1, H2, H3	
2
	 540	
H1, H2, H3	
3
	Secondary Volts
	 208			
	 120			
	1 phase			
				

X1

H1

X0

X3

X1, X2, X3
X1, X4 or
X2, X4

H3

X2

PRIMARY: 480 Volts Delta
SECONDARY: 240 Volts Delta/120 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC

X1

3 2 1

H1
X1

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

PRIMARY: 480 Volts Delta
SECONDARY: 240 Volts Delta/120 Volts
TAPS: 2, 5% BNFC

X3

PRIMARY: 480 Volts Delta
SECONDARY: 240 Volts Delta/120 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC

5 3 1

Connect
Secondary
Lines To

7 6 5 4 3 2 1

321

X2

H1

X3

H3

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 380	
H1, H2, H3	
1
	 361	
H1, H2, H3	
2
	 342	
H1, H2, H3	
3
	Secondary Volts
	 220			
	 127			
	1 phase			
				
		
		
		

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

H2

X2

X1

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 504	
H1, H2, H3	
1
	 492	
H1, H2, H3	
2
	 480	
H1, H2, H3	
3
	 468	
H1, H2, H3	
4
	 456	
H1, H2, H3	
5
	 444	
H1, H2, H3	
6
	 432	
H1, H2, H3	
7
	Secondary Volts
	 208			
	 120			
	1 phase			
H3
				

Connect
Secondary
Lines To

PRIMARY: 380 Volts Delta
SECONDARY: 220Y/127 Volts
TAPS: 2, 5% BNFC
H1

X0

X0

X3

X3

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 277	
H1, H5
	 240	
H1, H4
	 208	
H1, H3
	 120	
H1, H2
	Secondary Volts
	
		
X1 to X3	
120
			
X2 to X4
	120/240		
X2 to X3	
	 240		
X2 to X3	

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

X1

X2

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 630	
H1, H2, H3	
1
	 615	
H1, H2, H3	
2
	 600	
H1, H2, H3	
3
	 585	
H1, H2, H3	
4
	 570	
H1, H2, H3	
5
	 555	
H1, H2, H3	
6
	 540	
H1, H2, H3	
7
	Secondary Volts
	 208			
	 120			
	1 phase			
				

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

X3

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
WIRING
DIAGRAMS
DIAGRAMS

GENERAL
		
		
		

		
		
		

PRIMARY: 600 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC

30

H1

H2

31

		
		
		

PRIMARY: 480 Volts Delta
SECONDARY: 480Y/277 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC

32

PRIMARY: 480 Volts Delta
SECONDARY: 480Y/277 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC
H1

H3

H1

H2

5 3 1

5 3 1

2 4 6

5 3 1

2 4 6

5 3 1

2 4 6

7 6 5 4 3 2 1

7 6 5 4 3 2 1

X2

X1

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 630	
H1, H2, H3	
1 to 2
	 615	
H1, H2, H3	
2 to 3
	 600	
H1, H2, H3	
1 to 4
	 585	
H1, H2, H3	
3 to 4
	 570	
H1, H2, H3	
1 to 6
	 555	
H1, H2, H3	
3 to 6
	 540	
H1, H2, H3	
5 to 6
	Secondary Volts
	 208			
	 120			
	1 phase			
				
		
		
		

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

PRIMARY: 380 Volts Delta
SECONDARY: 208/120 Volts
TAPS: 2-2 1/2 % ANFC and BNFC

33

H2

H1
5 4 3 21

34

H1

36

PRIMARY: 460 Volts Delta
SECONDARY: 460Y/266 Volts
TAPS: 2-2 1/2 % ANFC and BNFC
H1

X0

2 4 6

X1

	Primary		
	 Volts	
%	
	 483	
105	
	 472	
102.5	
	 460	
100	
	 449	
97.5	
	 437	
95	
	Secondary Volts
	 460		
	 266		
	1 phase
		
			

		
		
		

35

37

2 4 6

5 3 1

X3

Connect Leads
to Tap No.
1 to 2
2 to 3
1 to 4
3 to 4
4 to 5

3 2 1

3 2 1

X1

X2

X3

Connect Leads
to Tap No.
1
2
3
X1, X2, X3
X1 & X0
X2 & X0
X3 & X0

5 4 3 2 1

H2

38

X1, X2, X3
X1 & X0
X2 & X0
X3 & X0

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

3 2 1

3 2 1

X1

X2

X3

Connect Leads
to Tap No.
1
2
3
X1, X2, X3
X1 & X0
X2 & X0
X3 & X0

H2

5 4 3 2 1

X3

Connect Leads
to Tap No.
1
2
3
4
5
X1, X2, X3
X1 & X0
X2 & X0
X3 & X0

PRIMARY: 460 Volts Delta
SECONDARY: 230Y/133 Volts
TAPS: 2-2 1/2 % ANFC and BNFC
H1

5 4 3 2 1

X0

X1

Primary		
	 Volts	
%	
	483	
105	
	472	
102.5	
	460	
100	
	449	
97.5	
	437	
95	
	Secondary Volts
	 230		
	 133		
	1 phase		
			

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

H3

X2

X1

H3

3 2 1

	Primary		
	 Volts	
%	
	483	
105	
	460	
100	
	437	
95	
	Secondary Volts
	 230		
	 133		
	1 phase		
			

X3

5 4 3 2 1

	Primary		
	 Volts	
%	
	483	
105	
	472	
102.5	
	460	
100	
	449	
97.5	
	437	
95	
	Secondary Volts
	 460		
	 266		
	1 phase		
			
		
		
		

PRIMARY: 460 Volts Delta
SECONDARY: 230Y/133 Volts
TAPS: 1-5% ANFC and BNFC

X0

2 4 6

Connect
Secondary
Lines To

H1

2 4 6

X2

5 3 1

X2

X1

H3

5 3 1

2 4 6

PRIMARY: 460 Volts Delta
SECONDARY: 460Y/266 Volts
TAPS: 2-2 1/2 % ANFC and BNFC

H3

3 2 1

	Primary		
	 Volts	
%	
	483	
105	
	460	
100	
	437	
95	
	Secondary Volts
	 460		
	 266		
	1 phase		
			

		
		
		

H2

5 3 1

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

H2

H1
5 3 1

Connect
Secondary
Lines To

X0
X0

2 4 6

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 504	
H1, H2, H3	
1 to 2
	 492	
H1, H2, H3	
2 to 3
	 480	
H1, H2, H3	
1 to 4
	 468	
H1, H2, H3	
3 to 4
	 456	
H1, H2, H3	
1 to 6
	 444	
H1, H2, H3	
3 to 6
	 432	
H1, H2, H3	
5 to 6
	Secondary Volts
	 480			
	 277			
	1 phase			
				

X3

		
Connect		
Connect
	Primary	
Primary	
Inter-	
Secondary
	 Volts	
Lines To	
Connect	
Lines To
	 399	
H1, H2, H3	
1
	 390	
H1, H2, H3	
2
	 380	
H1, H2, H3	
3
	 371	
H1, H2, H3	
4
	 361	
H1, H2, H3	
5		
	Secondary Volts
	 208			
X1, X2, X3
	
			
X1 to X0
120
X2 to X0
	1 phase			
				
X3 to X0
		
		
		

X3

PRIMARY: 460 Volts Delta
SECONDARY: 460Y/266 Volts
TAPS: 1-5% ANFC and BNFC

5 4 3 21

X2

X2

X1

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 504	
H1, H2, H3	
1
	 492	
H1, H2, H3	
2
	 480	
H1, H2, H3	
3
	 468	
H1, H2, H3	
4
	 456	
H1, H2, H3	
5
	 444	
H1, H2, H3	
6
	 432	
H1, H2, H3	
7
	Secondary Volts
	 480			
	 277			
	1 phase			
				
		
		
H3
		

H3

5 4 3 21

X1

X0

X0

X3

H3

7 6 5 4 3 2 1

X0

X0

H2

H3

H2

5 4 3 2 1

H3

5 4 3 2 1

X2

X3

Connect Leads
to Tap No.
1
2
3
4
5
X1, X2, X3
X1 & X0
X2 & X0
X3 & X0
127

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
WIRING
DIAGRAMS
DIAGRAMS

GENERAL
		
		
		

39

PRIMARY: 460 Volts Delta
SECONDARY: 230Y/133 Volts
TAPS: 2-2 1/2 % ANFC and BNFC
H1

		
		
		

40

H2

PRIMARY: 575 Volts Delta
SECONDARY: 230Y/133 Volts
TAPS: 1-5% ANFC and BNFC

X0

2 4 6

5 3 1

2 4 6

	 Primary		
	
Volts	
%	
	
483	
105	
	
472	
102.5	
	
460	
100	
	
449	
97.5	
	
437	
95	
	 econdary Volts
S
	
230		
	
133		
	 1 phase
		
			
		
		
		

42

5 3 1

X3

Connect Leads
to Tap No.
1 to 2
2 to 3
1 to 4
3 to 4
4 to 5
X1, X2, X3
X1 & X0
X2 & X0
X3 & X0

PRIMARY: 575 Volts Delta
SECONDARY: 230Y/133 Volts
TAPS: 2-2 1/2 % ANFC and BNFC
H1

H2

X0

2 4 6

X0

3 2 1

3 2 1

X1

X2

X3

43

2 4 6

	Primary		
	 Volts	
%	
	 604	
105	
	 589	
102.5	
	 575	
100	
	 561	
97.5	
	 546	
95	
	Secondary Volts
	 230		
	 133		
	1 phase
		
			
		
		
		

45

X3

Connect Leads
to Tap No.
1 to 2
2 to 3
1 to 4
3 to 4
4 to 5
X1, X2, X3
X1 & X0
X2 & X0
X3 & X0

PRIMARY: 575 Volts Delta
SECONDARY: 460Y/266 Volts
TAPS: 2-2 1/2 % ANFC and BNFC
H1

5 3 1

2 4 6

2 4 6

X0

46

X1

	 Primary		
	
Volts	
%	
	
604	
105	
	
589	
102.5	
	
575	
100	
	
561	
97.5	
	
546	
95	
	 econdary Volts
S
	
460		
	
266		
	 1 phase
		
			

128

3 2 1

3 2 1

X1

X2

X3

X1

H3

5 3 1

5 4 3 2 1

2 4 6

X2

X3

Connect Leads
to Tap No.
1 to 2
2 to 3
1 to 4
3 to 4
4 to 5
X1, X2, X3
X1 & X0
X2 & X0
X3 & X0

H1

X2

5 4 3 2 1

H2

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 218	
X1, X2, X3	
1
	 213	
X1, X2, X3	
2
	 208	
X1, X2, X3	
3
	 203	
X1, X2, X3	
4
	 198	
X1, X2, X3	
5
	Secondary Volts
	 480			
	 277			
	1 phase			
				

Connect Leads
to Tap No.
1
2
3
4
5
X1, X2, X3
X1 & X0
X2 & X0
X3 & X0

PRIMARY: 575 Volts Delta
SECONDARY: 460Y/266 Volts
TAPS: 2-2 1/2 % ANFC and BNFC
H2

5 4 3 2 1

X0

5 4 3 2 1

47

5 4 3 2 1

5 4 3 2 1

H1, H2, H3
H1 to H0
H2 to H0
H3 to H0

X3

Connect Leads
to Tap No.
1
2
3
4
5
X1, X2, X3
X1 & X0
X2 & X0
X3 & X0

H1

Connect
Secondary
Lines To

5 4 3 2 1

PRIMARY: 416 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2, 2 1/2 % ANFC, 2, 2 1/2 % BNFC

X3

H3

H3

X2

X1

	 rimary		
P
	 Volts	
%	
	604	
105	
	589	
102.5	
	575	
100	
	561	
97.5	
	546	
95	
	Secondary Volts
	 460		
	 266		
	1 phase		
			
		
		
		

5 4 3 2 1

X3

H1

3 2 1

H3

X2

X1

H3

PRIMARY: 208 Volts Delta
SECONDARY: 480Y/277 Volts
TAPS: 2, 2 1/2 % ANFC, 2, 2 1/2 % BNFC

H0
X0

44

	 Primary		
Connect Leads
	
Volts	
%	
to Tap No.
	604	
105	
1
	575	
100	
2
	546	
95	
3
	Secondary Volts
	
460		
X1, X2, X3
	
		
X1 & X0
266 		
	 1 phase
X2 & X0
			
X3 & X0

		
		
		

H2

5 3 1

		
		
		

H2

5 4 3 2 1

	Primary		
	 Volts	
%	
	604	
105	
	589	
102.5	
	575	
100	
	561	
97.5	
	546	
95	
	Secondary Volts
	 230		
	 133		
	1 phase		
			

PRIMARY: 575 Volts Delta
SECONDARY: 460Y/266 Volts
TAPS: 1-5% ANFC and BNFC

2 4 6

X2

X1

X0

H3

5 3 1

H2

5 4 3 2 1

	
Primary		
Connect Leads
	
Volts	
%	
to Tap No.
	604	
105	
1
	575	
100	
2
	546	
95	
3
	Secondary Volts
	
230		
X1, X2, X3
	
		
X1 & X0
133 		
	
X2 & X0
1
phase
			
X3 & X0

		
		
		

H2

5 3 1

H1

H3

3 2 1

H1
5 3 1

PRIMARY: 575 Volts Delta
SECONDARY: 230Y/133 Volts
TAPS: 2-2 1/2 % ANFC and BNFC

2 4 6

X2

X1

41

H3
H1

5 3 1

		
		
		

X0

X1

H2

5 4 3 2 1

X2

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 437	
H1, H2, H3	
1
	 426	
H1, H2, H3	
2
	 416	
H1, H2, H3	
3
	 406	
H1, H2, H3	
4
	 395	
H1, H2, H3	
5
	Secondary Volts
	 208			
	 120			
	1 phase			
				

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

H3

5 4 3 2 1

X3

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
WIRING
DIAGRAMS
DIAGRAMS

GENERAL
		
		
		

48

		
		
		

PRIMARY: 208 Volts Delta
SECONDARY: 480Y/ 277 Volts
TAPS: 2, 5% BNFC

49

PRIMARY: 600 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2, 2 1/2 % ANFC, 2, 2 1/2 % BNFC
H1

X1

X2

5 4 3 2 1

H1

H3

H2

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 208	
X1, X2, X3	
1
	 198	
X1, X2, X3	
2
	 187	
X1, X2, X3	
3
	Secondary Volts
	 480			
	 277			
	1 phase			
				
		
		
		

51

Connect
Secondary
Lines To

H1, H2, H3
H1 to H0
H2 to H0	
H3 to H0

5 4 3 2 1

H1

H3
7 6 5 4 3 2 1

5 4 3 2 1

H1

H2

7 6 5 4 3 2 1

X2

X1

52

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

PRIMARY: 600 Volts Delta
SECONDARY: 600Y/ 347 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC

H3

H1

7 6 5 4 3 2 1

X0

X3

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 630	
H1, H2, H3	
1
	 615	
H1, H2, H3	
2
	 600	
H1, H2, H3	
3
	 585	
H1, H2, H3	
4
	 570	
H1, H2, H3	
5
	Secondary Volts
	 208			
	 120			
	1 phase			
				
		
		
		

PRIMARY: 600 Volts Delta
SECONDARY: 480Y/277 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC
7 6 5 4 3 2 1

PRIMARY: 600 Volts Delta
SECONDARY: 380Y/220 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC
H2

7 6 5 4 3 2 1

X2

X1

7 6 5 4 3 2 1

X3

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 630	
H1, H2, H3	
1
	 615	
H1, H2, H3	
2
	 600	
H1, H2, H3	
3
	 585	
H1, H2, H3	
4
	 570	
H1, H2, H3	
5
	 555	
H1, H2, H3	
6
	 540	
H1, H2, H3	
7
	Secondary Volts
	 480			
	 277			
	1 phase			
				
		
		
		

54

X0

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

H2

7 6 5 4 3 2 1

H3

7 6 5 4 3 2 1

H1

55

H2

3 2 1

3 2 1

X1

X2

X3

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 600	
H1, H2, H3	
1
	 570	
H1, H2, H3	
2
	 540	
H1, H2, H3	
3
	Secondary Volts
	 600			
	 347			
	1 phase			
				

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

H1

X0

X3

		
		
		

53

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

PRIMARY: 600 Volts Delta
SECONDARY: 380Y/220 Volts
TAPS: 2, 5% BNFC
H2

H3

X3

Connect
Secondary
Lines To
X0

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

PRIMARY: 600 Volts Delta
SECONDARY: 480Y/277 Volts
TAPS: 2, 5% BNFC

H3

3 2 1

X2

X1

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 630	
H1, H2, H3	
1
	 615	
H1, H2, H3	
2
	 600	
H1, H2, H3	
3
	 585	
H1, H2, H3	
4
	 570	
H1, H2, H3	
5
	 555	
H1, H2, H3	
6
	 540	
H1, H2, H3	
7
	Secondary Volts
	 600			
	 347			
	1 phase			
				
		
		
		

PRIMARY: 600 Volts Delta
SECONDARY: 600Y/347 Volts
TAPS: 2, 5% BNFC

X0

7 6 5 4 3 2 1

X2

X1

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 630	
H1, H2, H3	
1
	 615	
H1, H2, H3	
2
	 600	
H1, H2, H3	
3
	 585	
H1, H2, H3	
4
	 570	
H1, H2, H3	
5
	 555	
H1, H2, H3	
6
	 540	
H1, H2, H3	
7
	Secondary Volts
	 380			
	 220			
	1 phase			
				

H1
X0

H3

3 21

X0

H0

50

X3

32 1

32 1

H2

		
		
		

56

3 2 1

X1

X2

X3

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

PRIMARY: 600 Volts
SECONDARY: 480 Volts
TAPS: 2, 5% BNFC

H3

3 2 1

3 2 1

3 2 1

X1

X2

X3

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 600	
H1, H2, H3	
1
	 570	
H1, H2, H3	
2
	 540	
H1, H2, H3	
3
	Secondary Volts
	 480			
	 277			
	1 phase			
				

3 2 1

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 600	
H1, H2, H3	
1
	 570	
H1, H2, H3	
2
	 540	
H1, H2, H3	
3
	Secondary Volts
	 380			
	 220			
	1 phase			
				
		
		
		

H2

3 2 1

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

H1 H4 H7 X1

H2 H5 H8 X2

H3 H6 H9 X3

X0
H0

			 Connect		 Connect
	 rimary	
P
Alt	
Primary	
Inter-	 Secondary
	 Volts	 Rating	 Lines To	 Connect	 Lines To
	 600	
480	 H1, H2, H3	
	 570	
456	 H4, H5, H6	
	 540	
432	 H7, H8, H9	
	Secondary Volts
	 480	
380			
X1, X2, X3
	 277	
			
X1 to X0
220
	1 phase	 1 phase	
		
X2 to X0
					
X3 to X0

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

129

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
WIRING
DIAGRAMS
DIAGRAMS

GENERAL
		
		
		

57

PRIMARY: 600 Volts
SECONDARY: 480 Volts
TAPS: 2, 5% BNFC

		
		
		

58

H1
H1

H2

H3

1 2 3 X1

1 2 3 X2

1 2 3 X3

			 Connect		 Connect
	Primary	 Alt	
Primary	
Inter-	 Secondary
	 Volts	 Rating	 Lines To	 Connect	 Lines To
	 600	
480	 H1, H2, H3	
1
	 570	
456	 H1, H2, H3	
2
	 540	
432	 H1, H2, H3	
3
	Secondary Volts
	 480	
380			
X1, X2, X3
	 277	
			
X1 to X0
220
	1 phase	 1 phase	
		
X2 to X0
					
X3 to X0

3 2 1

X0

		
		
		

61

63

H3

3 2 1

X2

X3

Connect Leads
to Tap No.
1
2
3
X1, X2, X3
X1 & X0
X2 & X0
X3 & X0

PRIMARY: 120/208/240/277 Volts
SECONDARY: 120/240 Volts
H1

X4

H4
H2 H3

X2

X0

		
Connect		
	 rimary	
P
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 120	
H1 to H6
H1 & H8	
			
H3 to H8
	 208	
H1 & H8	
H2 to H7
	 240	
H1 & H8	
H3 to H6
	 277	
H1 & H8	
H4 to H5
	Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4	
130

Connect
Secondary
Lines To

X1-X4
X1-X2-X4
X1-X4

H2

5 4 3 2 1

X0

5 4 3 2 1

		
		
		

64

5 4 3 2 1

X2

X1

		
		
		

X1

Connect
Secondary
Lines To

X1 & X4
X1, X3, X4
X1 & X4

Connect Leads
to Tap No.
1
2
3
4
5
X1, X2, X3
X1 & X0
X2 & X0
X3 & X0

H3

H4

H5

X3

H6

H7

H8

X2

		
Connect		
	Primary	
Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 190	
H1 to H6
H1& H7	
			
H2 to H7
	 208	
	
H1 to H6
H1 & H8
			
H3 to H8	
	 220	
	
H1 to H6
H1 & H9
			
H4 to H9
	 240	
	
H1
to H6
H1& H10
			
H5 to H10
	 380	
H1 & H7	
H2 to H6
	 416	
H1 & H8	
H3 to H6
	 440	
H1 & H9	
H4 to H6
	 480	
H1 & H10	
H5 to H6
	Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4	

X0

65

H10

X1

Connect
Secondary
Lines To

X1 - X4
X1- X2 - X4
X1 - X4

H2

H3

3 2 1

3 2 1

3 2 1

X1

X2

X3

	 Primary		
Connect Leads
	
Volts	
%	
to Tap No.
	241	
105	
1
	230	
100	
2
	218	
95	
3
	Secondary Volts
	
230		
X1, X2, X3
	
		
X1 & X0
133 		
	 1 phase
X2 & X0
			
X3 & X0
		
		
		

H9

X3

PRIMARY: 230 Volts Delta
SECONDARY: 230Y/133 Volts
TAPS: 1-5% ANFC and 1-5% BNFC

X3

PRIMARY: 190/208/220/240 x
380/416/440/480 Volts
SECONDARY: 120/ 240 Volts
H2

5 4 3 2 1

	 Primary		
Connect Leads
	
Volts	
%	
to Tap No.
	242	
105	
1
	236	
102.5	
2
	230	
100	
3
	224	
97.5	
4
	219	
95	
5
	Secondary Volts
	
230		
X1, X2, X3
	
		
X1 & X0
133 		
	 1 phase
X2 & X0
			
X3 & X0

62

H3

X2

X1

H3

X1

	Primary		
	 Volts	
%	
	218	
105	
	213	
102.5	
	208	
100	
	203	
97.5	
	198	
95	
	Secondary Volts
	 208		
	 120		
	1 phase		
			

X4

H5
H8
H6 H7

X3

H2

H1

H1

		
		

H1

PRIMARY: 208 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2-2 1/2 % ANFC and 2-2 1/2 % BNFC

5 4 3 2 1

H2

	Primary		
	 Volts	
%	
	208	
100	
	198	
95	
	187	
90	
	Secondary Volts
	 208		
	 120		
	1 phase		
			

X3

H1

3 2 1

X1

X2

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	 Connect	
	 208	
H1 & H2	
3 to 4
	 198	
H1 & H2	
2 to 5
	 187	
H1 & H2	
1 to 6
	Secondary Volts
	 240		
X2 to X3	
	120/240		
X2 to X3	
	 120		
X1 to X3	
			
X2 to X4

PRIMARY: 208 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2-5% BNFC
H1

PRIMARY: 230 Volts Delta
SECONDARY: 230Y/133 Volts
TAPS: 2-2 1/2 % ANFC and 2-2 1/2 % BNFC

H2

4 5 6

1 2 3

X4

60

59

5 4 3 2 1

X0
H0

		
		
		

		
		
		

PRIMARY: 208 Volts
SECONDARY: 120/240 Volts
TAPS: 2, 5% BNFC

H1

PRIMARY: 190/200/208/220 x
380/400/416/440 Volts
SECONDARY: 110/ 220 Volts
H2

H3

X4

H4

H5

H6

X3

X2

H7

H8

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 190	
H1 to H6
H1 & H7	
			
H2 to H7	
	 200	
	
H1
to H6
H1 & H8
			
H3 to H8
	 208	
H1 to H6
H1 & H9	
			
H4 to H9
	 220	
	
H1 to H6
H1 & H10 H5
			
to H10
	 380	
H1 & H7	
H2 to H6
	 400	
H1 & H8	
H3 to H6
	 415	
H1 & H9	
H4 to H6
	 440	
H1 & H10	 H5 to H6
	Secondary Volts
	 220		
X2 to X3	
	110/220		
X2 to X3	
	 110		
X1 to X3	
			
X2 to X4

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

H9

H10

X1

Connect
Secondary
Lines To

X1-X4
X1-X2-X4
X1-X4

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
WIRING
DIAGRAMS
DIAGRAMS

GENERAL
		
		
		

		
		
		

PRIMARY: 416 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2, 5% BNFC

66

H1

H2

H3

H1

7 6 5 4 3 2 1

X0

X1

69

H1

X1

72

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

H2

7 6 5 4 3 2 1

X4

H3

7 6 5 4 3 2 1

X2

	Primary		
	 Volts	
%	
	630	
105	
	615	
102.5	
	600	
100	
	585	
97.5	
	570	
95	
	555	
92.5	
	540	
90	
	Secondary Volts
	 240		
	 120		
			
		
		
		

Connect
Secondary
Lines To

PRIMARY: 600 Volts Delta
SECONDARY: 240 Delta/ 120 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC

7 6 5 4 3 2 1

X3

Connect Leads
to Tap No.
1
2
3
4
5
6
7
X1, X2, X3
X1, X4, or
X2, X4

PRIMARY: 380 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC
H1

7 6 5 4 3 2 1

7 6 5 4 3 2 1

H2

7 6 5 4 3 2 1

H3

X0

X1

H3

H1

X2

7 6 5 4 3 2 1

X2

X1

7 6 5 4 3 2 1

X3

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 504	
H1, H2, H3	
1	
	 492	
H1, H2, H3	
2
	 480	
H1, H2, H3	
3
	 468	
H1, H2, H3	
4
	 456	
H1, H2, H3	
5
	 444	
H1, H2, H3	
6
	 432	
H1, H2, H3	
7
	Secondary Volts
	 208			
	
			
	 120 			
1 phase
				
		
		
		

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

H2

7 6 5 4 3 2 1

X1
321

H0

X2

H3

7 6 5 4 3 2 1

	 Primary		
	
Volts	
%	
	240	
100	
	228	
95	
	216	
90	
	Secondary Volts
	
480		
	
277		
	 1 phase		
			
		
		
		

73

H1

H2

X3

Connect
Secondary
Lines To

X1, X2, X3
X1, X4, or
X2, X4

PRIMARY: 240 Volts Delta
SECONDARY: 480Y/277 Volts
TAPS: 2, 2 1/2 % ANFC & BNFC
54 3 21

X2
54 321

X3
54 321

H3

Connect Leads
to Tap No.
1
2
3
H1, H2, H3
H1 to H0
H2 to H0
H3 to H0

PRIMARY: 440 Volts Delta
SECONDARY: 220Y/127 Volts
TAPS: 2, 5% ANFC & BNFC

7 6 5 4 3 2 1

X2

X1

321

H2

H1

71

X3

321

X4

X1

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 504	
H1, H2, H3	
1	
	 492	
H1, H2, H3	
2
	 480	
H1, H2, H3	
3
	 468	
H1, H2, H3	
4
	 456	
H1, H2, H3	
5
	 444	
H1, H2, H3	
6
	 432	
H1, H2, H3	
7
	Secondary Volts
	 240			
	
			
120
				
		
		
		H3

PRIMARY: 240 Volts Delta
SECONDARY: 480Y/277 Volts
TAPS: 2, 5% BNFC

70

5 4 3 21
X0

PRIMARY: 480 Volts Delta
SECONDARY: 240 Volts Delta/120 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC

68

X3

X2

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 437	
H1, H2, H3	
1	
	 416	
H1, H2, H3	
2
	 395	
H1, H2, H3	
3
	Secondary Volts
	 208			
	
			
	 120 			
1 phase
				
		
		
		

H2

		
		
		

3 21

32 1

32 1

PRIMARY: 480 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2- 2 1/2 % ANFC, 4, 2 1/2 % BNFC

67

H3

5 4 3 21

5 4 3 21

X2

X3

H0

H1

H2

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 252	
X1, X2, X3	
1	
	 246	
X1, X2, X3	
2
	 240	
X1, X2, X3	
3
	 234	
X1, X2, X3	
4
	 228	
X1, X2, X3	
5
	Secondary Volts
	 480			
	
			
	 277 			
1 H3
phase
				

H3

Connect
Secondary
Lines To

H1, H2, H3
H1 to H0
H2 to H0
H3 to H0

X3

	 Primary		
Connect Leads
	
Volts	
%	
to Tap No.
	399	
105	
1
	390	
102.5	
2
	380	
100	
3
	371	
97.5	
4
	361	
95	
5
	352	
92.5	
6
	342	
90	
7
Secondary Volts
	
208		
X1, X2, X3
	
		
X1 to X0
120
		
X2 to X0
	 1 phase
			
X3 to X0

X0

X1

	 Primary		
Connect Leads
	
Volts	
%	
to Tap No.
	484	
110	
1
	462	
105	
2
	440	
100	
3
	418	
95	
4
	396	
90	
5
	Secondary Volts
	
220		
X1, X2, X3
	
		
X1 to X0
127
X2 to X0
	 1 phase		
			
X3 to X0

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

131

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
WIRING
DIAGRAMS
DIAGRAMS

GENERAL
		
		
		

74

PRIMARY: 190/200/210/220/
230/240 Volts Delta
SECONDARY: 400Y/231 Volts	
X1
6 5 4 3 2 1

		
		
		

PRIMARY: 190/200/210/220/
230/240 Volts Delta
SECONDARY: 400Y/231 Volts

75

X2

H2

H1
6 5 4 3 21

H0

H2

H1

77

7654 321

X4

3 21

X1

X2

6 5 4 3 21

X2

X3

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 240	
H1, H2, H3	
1	
	 230	
H1, H2, H3	
2
	 220	
H1, H2, H3	
3
	 210	
H1, H2, H3	
4
	 200	
H1, H2, H3	
5
	 190	
H1, H2, H3	
6
	Secondary Volts
	 400			
	
			
	 231 			
1
phase
				
		
		
		

321

H3

321

Connect
Secondary
Lines To

X1, X2, X3
X1 to X4 or
X2 to X4

H2
3 21

X2

H1

H2

H3

X1

X2

X3

321

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 277	
H1 & H2		
	 480	
H1 & H3	
	Secondary Volts
	 208			
	 277			
		
		
		

X3

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 400	
H1, H2, H3	
1	
	 380	
H1, H2, H3	
2
	 360	
H1, H2, H3	
3
	Secondary Volts
	 240			
	
			
120
				

		
		
		

79

X1 to X2
X1 to X3

H5

H4

H2

H1

X1

82

X4

X1

Connect
Secondary
Lines To

X1 - X5
X1 - X6

PRIMARY: 380 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2-2 1/2 % ANFC and 2-2 1/2 % BNFC

H3

H1

54 321

54 321

5 4 3 2 1

X0

X2

X2
X3

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	277	 H1 - H5	
H2 to H4	
	480	 H1 - H6	
H3 to H4
	Secondary Volts
	 208		
X2 to X4	
	 277		
X3 to X4	
		
		
		

X1, X2, X3
X1 to X4 or
X2 to X4

H6
H3

X6

Connect
Secondary
Lines To

Connect
Secondary
Lines To

PRIMARY: 277/480 Volts
SECONDARY: 208/277 Volts
TAPS: NONE

H2

PRIMARY: 480 Volts Delta
SECONDARY: 208Y/ 120 Volts
TAPS: 2, 2 1/2 % ANFC, 2, 2 1/2 % BNFC

81

X3

H1

X0

3 21

X2

X5

54 3 21

H3

Connect
Secondary
Lines To

X4

X1

PRIMARY: 277/480 Volts
SECONDARY: 208/277 Volts
TAPS: NONE

78

X3

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 504	
H1, H2, H3	
1	
	 480	
H1, H2, H3	
2
	 456	
H1, H2, H3	
3
	Secondary Volts
	 208			
	
			
	 120 			
1 phase
				
132

H2

H1

H3

6 5 4 3 21

X1

X0

PRIMARY: 480 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 1-5% ANFC & 1- 5% BNFC
H1

X0

H3
7654 321

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 420	
H1, H2, H3	
1	
	 410	
H1, H2, H3	
2
	 400	
H1, H2, H3	
3
	 390	
H1, H2, H3	
4
	 380	
H1, H2, H3	
5
	 370	
H1, H2, H3	
6
	 360	
H1, H2, H3	
7
	Secondary Volts
	 240			
	
			
120
				

80

H1, H2, H3
H1 to H0
H2 to H0
H3 to H0

H2
7654 321

X1

		
		
		

Connect
Secondary
Lines To

PRIMARY: 400 Volts Delta
SECONDARY: 240 Delta/ 120 Volts
TAPS: 2, 2 1/2 % ANFC, 4, 2 1/2 % BNFC
H1

PRIMARY: 400 Volts Delta
SECONDARY: 240 Volts Delta/120 Volts
TAPS: 2, 5% BNFC

H3

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 240	
X1, X2, X3	
1	
	 230	
X1, X2, X3	
2
	 220	
X1, X2, X3	
3
	 210	
X1, X2, X3	
4
	 200	
X1, X2, X3	
5
	 190	
X1, X2, X3	
6
	Secondary Volts
	 400			
	
			
	 231 			
1 phase
				
		
		
		

76

X3
6 5 4 3 2 1

6 5 4 3 2 1

		
		
		

X1

H2

5 4 3 2 1

X2

H3

5 4 3 2 1

X3

X3

		 Connect		
	Primary	 Primary	
Inter-	
	 Volts	
Lines To	
Connect	
	 504	
H1, H2, H3	
1	
	 492	
H1, H2, H3	
2
	 480	
H1, H2, H3	
3
	 468	
H1, H2, H3	
4
	 456	
H1, H2, H3	
5
	Secondary Volts
	 208			
	
			
	 120 			
1
phase
				

Connect
Secondary
Lines To

X1, X2, X3
X1 to X0
X2 to X0
X3 to X0

	 Primary		
Connect Leads
	
Volts	
%	
to Tap No.
	399	
105	
1
	390	
102.5	
2
	380	
100	
3
	371	
97.5	
4
	361	
95	
5
	Secondary Volts
	
208		
X1, X2, X3
	
		
X1 to X0
120 		
	 1 phase
X2 to X0
			
X3 to X0

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
ACCESSORIES
DIAGRAMS

GENERAL

Wall Mounting Brackets

Thermal Switch Kits
Acme Thermal Switch Kits are designed for use with single and three
phase drive isolation and distribution transformers. Thermal switch kits
are available for one or three sensor systems.
Thermal sensors can be field or factory installed in the transformer
winding ducts to detect abnormal temperatures. The thermal sensors
are a normally closed contact that opens at 200°C ± 10°C and has a
current capacity of 5 amps @ 120V or 2.5 amps @ 240V. This contact
can activate any number of different types of alarms or mechanisms
that could warn of a potential failure.

Catalog Number: PL-79900
	 kVA	

Required on:
Ventilated Units:
1Ø, 37.5 and 50 kVA
3Ø, 30, 45 and 75 kVA
Catalog Number: PL-79912

Mounting Position	

Illustration

	 27.0 –	
	 220.0	

Bottom of
the case	

Figure 1

	 275.0 –	
	 750	

Top Flange of the
Core Bracket	

Figure 2

Encapsulated Units:
3Ø dit., 11 kVA — 20 kVA
3Ø std. distribution — 15 kVA
Catalog Number: PL-79911
Wall mounting brackets are not
required on:
1Ø units — 25 kVA and below
3Ø units — 9 kVA and below

COIL 1

COIL 3

COIL 2

Standard Taps
The catalog number suffix provides tap
information as outlined in chart below:

CORE
BOTTOM OF CASE

If the catalog number has no suffix,
there are no taps available.

Figure 1

EXAMPLE: T-2-53019-3S
The suffix 3S indicates the unit has two 2.5%
(+) ANFC taps and four 2.5% (–) BNFC taps.
	 Suffix		
	

– 1S	

TERMINAL BLOCK

Tap Arrangement

		
One 5% (+) ANFC Tap
	 – 2S		
and
		
One 5% (–) BNFC Tap
		
Two 2-1/2% (+) ANFC Taps
	 – 3S		
and
		
Four 2-1/2%(–) BNFC Taps
		
Two 2-1/2% (+) ANFC Taps
	 – 4S		
and
		
Two 2-1/2% (–) BNFC Taps

.625 (1.6 cm) H DIA.
EPOXY-RING

EPOXY LAYER

Two 5% (–) BNFC Taps

THERMAL SWITCH
.5H
(1.3 cm)
H
COIL 1

		
Two 5% (+) ANFC Taps
	 – 5S		
and
		
Two 5% (–) BNFC Taps

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

COIL 2

COIL 3

CORE

Figure 2

133

GENERAL

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
ACCESSORIES
DIAGRAMS

Lug Kits

Weather Shields

Acme’s mechanical transformer lug kits contain all of the hardware
necessary to provide satisfactory transformer terminations. Lug kits are
available in sizes from 27 kVA to 660 kVA.

	 Catalog No.	
		

Acme lugs are of the dual rated single pole solderless type, made
from high strength aluminum alloy. To provide the best in low contact
resistance, all lugs in these kits are plated.
				
		
Transformer	
Wire Range
	 Catalog No.	
kVA Size	
Al or Cu	
	
	37 1/2 1-phase	
Lug 1
		 27 - 45 3-phase	

Kit Contains

2 -14	
250 mcm - 6	

Qty	

Nuts & Bolts	

8	
4

1/4 - 20 X 3/4	

8

1/4

	
	
Lug 2
		

50 - 75 1-phase	
	
250 mcm - 6	
12
51 - 118 3-phase			

	
	
Lug 3
		

100 -167 1-phase	
145 - 300 3-phase	

250 mcm - 6	
600 mcm - 2	

3	
22	

1/4

	

440 - 660 3-phase	

600 mcm - 2	

29	

3/8

Lug 4	

Qty

- 20 x 3/4	8
1/4 - 20 x 1 3/4	8

Approx. Ship Weight
Lbs. (Kg.)

	 WSA1	

6 (2.7)

	 WSA2	

7 (3.2)

	 WSA3	

8 (3.6)

	 WSA4	

8 (3.6)

	 WSA5	

10 (4.5)

	 WSA6	

10 (4.5)

	 WSA8	

7 (3.2)

	 WSB3	

30 (13.6)

	 WSB4	

32 (14.5)

- 20 x 3/4	3
- 16 x 2	
16

3/8

- 16 x 2	

8

Spare Parts
TOP COVER
	 Catalog No.	
		

FRONT/REAR PANEL
Approx. Ship Weight
Lbs. (Kg.)

	 Catalog No.	
		

Approx. Ship Weight
Lbs. (Kg.)

	 SA1701319	

14 (6.4)

	 SA1701321	

13 (5.9)

	 SA2701319	

16 (7.3)

	 SA2701321	

15 (6.8)

	 SA3701319	

20 (9.1)

	 SA3701321	

21 (9.5)

	 SA4701319	

34 (15.4)

	 SA4701321	

35 (15.9)

	 SA6701319	

17 (7.7)

	 SA7701321	

16 (7.3)

SIDE PANEL
	 Catalog No.	
		

134

Approx. Ship Weight
Lbs. (Kg.)

	 SA1701320	

11 (5.0)

	 SA2701320	

13 (5.9)

	 SA3701320	

19 (8.6)

	 SA4701320	

34 (15.4)

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

GENERAL

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
SPECIFICATIONS
DIAGRAMS

Specification Guide for
Dry Type Distribution Transformers
1.0 Dry Type Transformers:
1.0.0	The following information should be utilized only by
	
trained technical personnel. If you need assistance, 	
please contact Acme’s Technical Services Department 	
at 800-334-5214.
1.0.1	 P
 rovide dry type, enclosed and ventilated transformers
as indicated herein. Transformers shall be Acme or
approved equal.
1.0.2	Transformers shall be designed, constructed and rated
in accordance with UL, CSA, NEMA, ANSI, IEEE, and
OSHA standards.
1.0.3	Transformers rated 27 kVA and larger, single and three
phase shall be the ventilated type, incorporating a 220
degree C insulation system and designed not to
exceed 150 degree C temperature rise above a 40
degree C ambient under full load conditions. Taps are
to be provided on the primary side of the transformer
as follows:
	
(a) 	2 - 2.5% above normal full capacity.
		 4 - 2.5% below normal full capacity.
	
-or	
(b)	 2 - 2.5% above normal full capacity.
		 2 - 2.5% below normal full capacity.
	
	
Alternate 1: 115 degree C rise transformers shall 	
incorporate a 220 degree C insulation system and
be designed not to exceed 115 degree C temperature
rise above a 40 degree C ambient under full load
conditions. In addition, the transformer shall have
the ability to carry a continuous 15% overload without
exceeding a 150 degree C rise above ambient.
	

 lternate 2: 80 degree C rise Transformers shall
A
incorporate a 220 degree C insulation system and
be designed not to exceed 80 degree C temperature
rise above a 40 degree C ambient under full load
conditions. In addition, the transformer shall have the
ability to carry a continuous 30% overload without
exceeding a 150 degree C rise above ambient.

1.0.4	
Transformer enclosure finish must be ASA 61 gray
powder polyurethane paint. Transformer enclosure
temperature shall not exceed 50 degrees C plus
the ambient under any condition of loading at any
specified temperature rise at or below 150 degrees C.
1.0.5	
Transformer enclosure shall be UL/NEMA Type 2 and
UL 3R Listed with the addition of a weather shield and
shall be so marked on the transformer.
1.0.6	
Transformer shall incorporate an electrostatic shield
for the attenuation of voltage spikes, line noise, and
transients.

1.0.7	Single phase transformers and three phase
transformers terminate in copper or aluminum bus bar.
1.0.8	Transformer coils designed and manufactured for
increased insulation life, cooler operation, and lower
losses.
1.0.9	Transformers must operate at audible sound levels
below NEMA Standard ST-20. Sound levels will not
exceed the following:	
	
30 - 50 kVA	
45 db
51 - 150 kVA	
50 db
	
151 - 300 kVA	
55 db
301 - 500 kVA	
60 db
501 - 750 kVA	
65 db
	Transformers must incorporate vibration isolation pads
in their construction located between the transformer
core and coil assembly and the transformer case.
External vibration isolation pads will not be used as
they tend to increase audible noise. Transformers shall
be floor mounted on a concrete pad. All connections
	
to the transformer will be made by means of flexible 		
metallic conduit.
1.0.10	Transformer enclosure shall be grounded per the 		
National Electric Code.
1.0.11	Transformers shall be dry-type 600 volt class, kVA
rating as indicated. Contractor to provide all necessary
lugs for all transformers.
1.0.12	Complete shop drawings must be submitted for
approval on all dry type transformers.
1.0.13	Typical performance data must be submitted for
approval on all transformers. Factory tests must be
made in accordance with the latest revisions of ANSI
Test Code C57.12.91 for Dry Type Transformers.
Performance data provided must contain but not be
limited to:
	
(a)	 No load losses.
(b)	 Full load losses.
(c)	 Polarity and phase rotation.
(d)	 Impedance at reference temperature.
	
(e)	 Efficiencies at 25, 50, 75, and 100% load.
	
(f)	Regulation at 100% and 80% power factor.
	
(g)	 Audible sound level.
	
(h)	 Dimensions and weight.
	
(i)	 Applied potential test.
	
(j)	 Induced potential test.
	
(k)	 Excitation current.
	
(l)	 IR, IX, and IZ percentages.
	
(m) 	 Reference and ambient temperature.
1.0.14	Warranty: Transformers must be warranted against
defects in materials, workmanship, and performance
for ten years from date of manufacture.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

135

GENERAL

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
SPECIFICATIONS
DIAGRAMS

Specification Guide for Single & Three Phase
Encapsulated Transformers
1.0 Dry Type Transformers:
1.0.0	
	
	
	

The following information should be utilized only by 	
trained technical personnel. If you need assistance, 		
please contact Acme’s Technical Services Department 	
at 800-334-5214.

1.0.1	 Provide dry type, enclosed, epoxy encapsulated 		
	
transformers as indicated and specified herein. 		
	
Transformers must be A
 cme or approved equal.
1.0.2	Transformers must be designed, constructed and
rated in accordance with UL, CSA, NEMA, ANSI, IEEE,
and OSHA standards.
1.0.3	 T
 ransformers 3.0 - 75 kVA shall be compound filled,
incorporating a 180 degree C insulation system and
designed not to exceed a 115 degree C temperature
rise above a 40 degree C ambient under full load
	
conditions. Taps are to be provided on the primary 		
	side of the transformer. The catalog number suffix will 	
	
provide the tap information outlined below:
	

SUFFIX	 TAP ARRANGEMENT

	

- 1S		

2-5% BNFC

	

- 2S		

1-5% ANFC & 1-5% BNFC

	

- 3S		

2-2 .5% ANFC & 4-2.5% BNFC

	

- 4S		

2-2 .5% ANFC & 2-2.5% BNFC

	

- 5S		

2-5% ANFC & 2-5% BNFC

1.0.4	Transformer enclosure finish must be ASA 61 gray
powder polyurethane paint.
1.0.5	Transformer enclosure temperature shall not exceed
65 degrees C plus the ambient.
1.0.6	Transformer enclosure shall be UL/NEMA Type 3R and
so marked on the transformer.
1.0.7	
Transformer shall incorporate an electrostatic shield
for the attenuation of voltage spikes, line noise and
transients.
1.0.8	Transformer coils are typically wound with aluminum or
copper for increased insulation life, cooler operation
and lower losses.

136

1.0.9	
All primary tap connections and both primary and
secondary phase conductors must be either copper
wire or copper bus bar.
	
1.0.10	Transformers must operate at audible sound levels 		
	
below ANSI/NEMA Standard ST-20. Sound levels will 		
	
not exceed the following:
	
Up to 9 kVA	
40 db
	
10 - 50 kVA	
45 db
	
51 - 150 kVA	
50 db
1.0.11	Transformer enclosures shall be grounded per the
National Electric Code.
1.0.12	Complete shop drawings must be submitted for
approval on all Dry Type Transformers.
1.0.13	Typical performance data must be submitted for
approval on all transformers. Factory tests must be
made in accordance with the latest revisions of ANSI
Test Code C57.12.91 for Dry Type Transformers.
Performance data must contain but not be limited to:
	
(a)	 No load losses.
	
(b)	 Full load losses.
	
(c)	 Polarity and phase rotation.
	
(d)	 Impedance at reference temperature.
	
(e)	 Efficiencies at 25, 75, and 100% load.
	
(f)	 Regulation at 100% and 80% power factor.
	
(g)	 Audible sound level.
	
(h)	 Insulation class and rated temperature rise.
	
(i)	 Dimensions and weight.
	
(j)	 Applied potential test.
	
(k)	 Induced potential test.
	
(l)	 Excitation current.
	
(m)	 IR, IX, and IZ percentages.
	
(n)	 Reference and ambient temperature.
1.0.14	Warranty: Transformer must be warranted against
defects in materials, workmanship and performance
for ten years from date of manufacture.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

GENERAL

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
SPECIFICATIONS
DIAGRAMS

Specification Guide for Non-Linear Load
Isolation® Transformers
1.0 Dry Type Transformers:
1.0.0	 The following information should be utilized only by
	
trained technical personnel. If you need assistance,
please contact Acme’s Technical Services
Department at 800-334-5214.
1.0.1	Provide dry type, enclosed, and ventilated
transformers as indicated and specified herein.
Transformers must be Acme or approved equal.
Transformers must be UL listed for non-sinusoidal
current loads of a specified K Factor (UL Standard
1561), CSA certified and labeled as such.
1.0.2	 F
 or sizes 15 kVA and larger, low voltage dry
transformers will be ventilated type, incorporating a
220 degree C insulation system and designed not to
exceed 150 degree C temperature rise above a 40
degree C ambient under full load conditions. Taps will
be provided on the primary side of the transformer.
There will be 2, 2.5% taps above normal full capacity
and 4, 2.5% taps below normal full capacity.
	

 lternate 1: 115 degree C rise Transformers shall
A
incorporate a 220 degree C insulation system and
be designed not to exceed 80 degree C temperature
rise above a 40 degree C ambient under full load
conditions. In addition, the transformer shall have the
ability to carry a continuous 15% overload without
exceeding a 150 degree C rise above ambient.

	
Alternate 2: 80 degree C rise Transformers shall
incorporate a 220 degree C insulation system and
be designed not to exceed 80 degree C temperature
rise above a 40 degree C ambient under full load
conditions. In addition, the transformer shall have the
ability to carry a continuous 30% overload without
exceeding a 150 degree C rise above ambient.
1.0.3	Transformers shall incorporate an electrostatic shield
for the attenuation of voltage spikes, line noise, and
transients.
1.0.4	Transformers must be designed to handle nonlinear loads and the adverse effects of harmonics.
Transformer coils will be wound with foil to minimize
the heating effects caused by harmonic currents.
1.0.5	Transformers must be able to power non-linear loads
with a K-Factor as high as 20.
1.0.6	Transformers must operate at audible sound levels
below NEMA ST-20. Sound levels will not exceed the
following:
	
30 - 50 kVA	
45 db*
51 - 150 kVA	
50 db*
151 - 300 kVA	
55 db*
301 - 500 kVA	
60 db*

	

Enclosed, ventilated transformers must incorporate
vibration dampening pads in their construction,
located between the transformer core and coil
assembly and the transformer case. External vibration
dampening pads will not be used on enclosed,
ventilated designs as they tend to increase audible
noise. Transformers 15 kVA and larger shall be floor
mounted on a concrete pad. All connections to the
transformer will be made by means of flexible metallic
conduit.

1.0.7	Transformers shall incorporate a neutral conductor
sized at 2 times rated phase current. Transformer
	
cases shall be grounded per the National Electric
Code.
1.0.8	Transformers shall be 60 Hz, 480 or 600 volts delta
primary, 208Y/120 volt secondary. kVA rating as
	
indicated. Contractor to provide all necessary lugs for 	
	all transformers. Transformer enclosures shall be
Type 2 and UL-3R listed with the addition of a weather
shield.
1.0.9	Complete shop drawings must be submitted for
approval on all dry type transformers.
1.0.10	Typical performance data must be submitted for
approval on all transformers. Factory tests must be
made in accordance with the latest revisions of ANSI
Test Code C57.12.91 for Dry Type Transformers.
Performance data must contain but not be limited to:
	
(a)	 No load losses.
	
(b)	 Full load losses.
	
(c)	 Polarity and phase rotation.
	
(d)	 Impedance at reference temperature.
	
(e)	 Efficiencies at 25, 75, 50 and 100% load.
	
(f)	 Regulation at 100% and 80% power factor.
	
(g)	 Audible sound level.
	
(h)	 Insulation class and rated temperature rise.
	
(i)	 Dimensions and weight.
	
(j)	 Applied potential test.
	
(k)	 Induced potential test.
	
(l)	 Excitation current.
	
(m)	 IR, IX, and IZ percentages.
	
(n)	 Reference and ambient temperature.
1.0.11	Warranty: Transformers must be warranted against
defects in materials, workmanship and performance
for ten years from date of manufacture. 	

* Sound levels are based on transformers with a K-Factor of
4 and a temperature rise of 150 degrees centigrade.
ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

137

GENERAL

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
SPECIFICATIONS
DIAGRAMS

Specification Guide for Drive Isolation Transformers
1.0 Dry Type Transformers:
1.0.0	The following information should be utilized only by
	
trained technical personnel. If you need assistance,
please contact Acme’s Technical Services Department at
800-334-5214.
1.0.1	Provide dry type, enclosed, epoxy encapsulated
	
transformers as indicated and specified herein. 			
Transformers shall be designed for use with AC/DC 		
	Drive applications and labeled as such.
1.0.2	Transformers shall be designed, constructed and rated
in accordance with UL, CSA, NEMA, ANSI, IEEE, and
OSHA standards.
 1.0.3	Transformers 7.5 - 20 kVA shall be three phase,
	
compound filled, incorporating a 180 degree C insulation system and designed not to exceed a 115 degree C
temperature rise above a 40 degree C ambient under full
load conditions. Taps are provided on the primary side of
the transformer as follows:
	
(a)	 1-5% above normal full capacity.
	
(b)	 1-5% below normal full capacity.
	Transformers 27 - 750 kVA shall be the ventilated type,
incorporating a 220 degree C insulation system and
designed not to exceed a 150 degree C temperature rise
above a 40 degree C maximum ambient under full load
conditions. Taps are to be provided on the primary side
of the transformer as follows:
	
(a) 	 2 - 2.5% above normal full capacity.
(b) 	2 - 2.5% below normal full capacity.
		

	
Alternate 1: 115 degree C rise transformers shall
incorporate a 220 degree C insulation system and be
designed not to exceed a 115 degree C temperature rise
above a 40 degree C maximum ambient under full load
conditions.
	
Alternate 2: 80 degree C rise transformers shall 		
	incorporate a 220 degree C insulation system and be 		
	designed not to exceed 80 degree C temperature rise 		
above a 40 degree C maximum ambient under full 		
	load conditions.
1.0.4	Transformer enclosure finish must be ASA 61 gray powder
polyurethane paint. Ventilated transformer enclosure
temperature shall not exceed 50 degrees C plus the ambient.
Compound filled transformer enclosure temperature shall not
exceed 65 degrees C, plus the ambient.
1.0.5	Compound filled transformer enclosure shall be UL/
NEMA Type 3R and so marked on the transformer
(7.5 - 20 kVA). No weather shield is required. Ventilated
transformer enclosure shall be UL/NEMA Type 2 and
UL-3R listed with the addition of a weather shield and
shall be so marked on the transformer (27 - 750 kVA).
1.0.6	Transformers shall incorporate an electrostatic shield for
the attenuation of voltage spikes, line noise, and transients.
1.0.7	Transformers up to 220 kVA shall terminate in copper bus
bar or copper wire.
1.0.8	Transformer coils must be wound with aluminum strip
conductors for increased insulation life, cooler operation
and lower losses.
138

1.0.9	Transformers must operate at audible sound levels
below NEMA standard ST-20. Sound levels will not
exceed the following:
	
up to 9kVA	
40 db
10 - 50 kVA	
45 db
	
51 - 150 kVA	
50 db
151 - 300 kVA	
55 db
301 - 500 kVA	
60 db
501 - 750 kVA	
65 db
	Transformers must incorporate vibration isolation pads
in their construction located between the transformer
core and coil assembly and the transformer case, (27 750 kVA).
	External vibration pads should not be used as they
tend to increase audible noise. Transformers shall be
floor mounted on a concrete pad. All connections to the
transformer will be made by means of flexible metallic
conduit.
1.0.10	Transformer enclosure shall be grounded per the
National Electrical Code.
1.0.11	Transformer voltages shall be as follows:
	
(a)	
460 Delta - 460Y/266
(b)	
460 Delta - 230Y/133
(c)	
575 Delta - 230Y/133
(d)	
575 Delta - 460Y/266
(e)	
230 Delta-230Y/133
	
(f)	
Other
	Transformer shall be 60 Hz. kVA rating as indicated.
Contractor to provide all necessary lugs for all transformers.
1.0.12	Complete shop drawings must be submitted for
approval on all dry type transformers.
1.0.13	Typical performance data must be submitted for
approval on all transformers. Factory tests must be
made in accordance with the latest revisions of ANSI
Test Code C57.12.91 for Dry Type Transformers.
Performance data provided must contain, but not be
limited to:
	
(a)	 No load losses.
(b)	 Full load losses.
(c)	 Polarity and phase rotation.
(d)	 Impedance at reference temperature.
	
(e)	Efficiencies at 25, 75, 50 and 100% load.
	
(f)	 Regulation at 100% and 80% power factor.
	
(g)	 Audible sound level.
(h)	 Insulation class and rated temperature rise.
	
(i)	 Dimensions and weight.
(j)	 Applied potential test.
(k)	 Induced potential test.
(l)	 Excitation current.
(m) 	 IR, IX, and IZ percentages.
(n)	 Reference and ambient temperature.
1.0.14	Warranty: Transformers must be warranted against
defects in materials, workmanship and performance for
ten years from date of manufacture.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

™
ACME® TRANSFORMER
ELECTRICAL
CONNECTION
INDUSTRY
DIAGRAMS
STANDARDS

GENERAL

Transformer Industry Standards
Underwriters’ Laboratories, Inc. is an independent not for profit
organization which tests products for safety.

CSA Standards C22.2-47 and C22.2-66 and carry the CSA
Certification Label.

Acme’s transformers are designed and manufactured to comply
with UL Standard 506, 1561, 1012, or 1062 and carry the
applicable UL Listing Label. Because of the continuous product
evolutions at Acme, it is best that you contact the factory for
the current file and guide numbers associated with the listings.

All of Acme’s transformers are manufactured to meet National
Electrical Code requirements.

The Canadian Standards Association is the Canadian
counterpart to Underwriters’ Laboratories. Acme’s
transformers are also constructed and rated to comply with

Other Agencies and Standards:
National Electrical Manufacturers Association (NEMA)
ST-20 1992 (R1978)
American National Standards Institute (ANSI)
OSHA
IEEE
OCP LOCATION

Listed

Certified

SUPPLY
VOLTAGE

LOAD

B

A

How to overcurrent protect (OCP) 600 volt class transformers and associated wiring
. . . in accordance with the ‘99 National Electric Code (Articles 450-3(b) and 240-3 (i))

							
Primary	Secondary
		
Type of		
Number of						
	 Case	
Supply	
Phase	
Wires on	
Protection	
OCP	
Current	
OCP	
Current	
OCP
		
Voltage		
Secondary	
Required	
Location	
(AMPS)	
(% of rating)	
(AMPS)	
(% of rating)
					
	 1	
Main	
1Ø	
2	
					
					
1Ø	
More than 2
	2	
Main	
	
3Ø	
Not Applicable	
			
		
	 3	
		

Feeder			
Circuit	
1Ø	
2	
with OCP			

		
	4	
		

Feeder
Circuit	
with OCP	

1Ø	
3Ø	

More than 2	
Not Applicable	

		
> 9	125 ①
Primary	A	
< 9, > 2	
167 max.	
Only		
< 2	
300 max.
Primary		
&	
A & B	
Secondary ②		
None
on	
Either

Not Required

≥9	125 ①
< 9, ≥2	
167 max.	
<2	
300 max.	

—		

≥9	125①
<9	
167 max.

Not Required		

Secondary	
B		
Not Required	
Only ②				

Not Required

9	125 ①	
<9	
167 max.

Acme Transformer ™ Products vs. U/L Insulation Systems & U/L Standards
®

				
	 Acme Construction	
Acme Catalog	
U/L	
	 Style	
Product Name	
Standard	

U/L	
Product	
Category	

U/L	
File	
Number	

U/L	
Listed	
Control #	

	 Enclosed	
General Purpose	
506	
XPTQ	
E79947V1	
50B8	
		
and Buck-Boost
	 Compound Filled	
General Purpose	
506	
XPTQ	
E79947V1	
50B8	
	 (Encapsulated)	
Buck-Boost & DIT					
		
Panel Tran®	
1062	
YEFR	E56936V1	 N/A	
							
		
Swim Pool & Spa	
379	
HDGV	
E111069V1	
N/A	
		
Hardwired CVR	
1012	
QQFU	
E86492V1	
6B81	
							
		
Portable PLC	
1012	
QQFU	
E86492V1	
60B1	
	 Open Core & Coil	
Industrial Control	
506	
XPTQ	
E79947V1	
50B8	
	 Air Cooled	
General Purpose	
1561	
XQNX	
E12547V3	
542B	
	 Ventilated &	
Opti-Miser® & DIT
	 Non Ventilated
		
Air Conditioning	
NONE	
NONE	
NONE	
N/A	
	 Enclosed	
and Refrigeration
		
Appliance
① % of rated current (or next higher standard rating).
② In cases where the secondary is overcurrent protected, the primary overcurrent
protection rating can be no more than 250% (2.5 times) full load amps (shown on
above chart). For example, if a 10 kVA, single phase transformer has a 480V primary
and a 120/240 secondary, and the secondary is overcurrent protected, maximum
primary overcurrent protection rating is 20.8 amps (full load current) x 2.5 (250%) =
52. Therefore, use a standard 50 amp fuse or breaker selected from NEC Section
240-6 (below).

U/L	
Insulation	
Number	

Insulation	
System	
Temp./C	

kVA	
Single	
Phase	

kVA
Three
Phase

B3223	

130	

.050-.150	

N/A

X3221	
H3221	
H3180	
H3221	
H3180	
B3223	
X3221	
B3223	
B3223	
C3222	

155	
180	
180	
180	
180	
130	
155	
130	
130	
220	

.25-5.0	
3.0-6.0
7.5-25.0	
7.5-75.0
5.0	 N/A
7.5-25.0	 9.0-30.0
0.10-.30	
N/A
.25-3.0	
N/A
5.0-15.0	
N/A
.25-2.0	
N/A
.050-5.0	
N/A
37.5-250.0	 25-1000

NONE	

130	

.085-2.0	

N/A

Section 240-6 of the 1999 National Electrical Code. The standard ampere ratings
for fuses and inverse time circuit breakers shall be considered 15, 20, 25, 30, 35, 40,
45, 50, 60, 70, 80, 90, 100, 110, 125, 150, 175, 200, 225, 250, 300, 350, 400, 450, 500,
600, 700, 800, 1000, 1200, 1600, 2000, 2500, 3000, 4000, 5000 and 6000 amperes.
Exception: Additional standard ratings for fuses shall be considered 1, 3, 6, 10, and
601. “Extracted by permission from ANSI/NFPA 70-1999, National Electrical
Code ®, Copyright ©,1999, National Fire Protection Association, Boston, MA.”
Acme Electric–Power Distribution Products Division has never used
polychlorinated biphenyls (PCBs) in the manufacture of our quality products.

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

139

GENERAL

ELECTRICAL CONNECTION
ALPHANUMERICAL
CATALOG
DIAGRAMS
NUMBER INDEX

Alphanumerical Catalog Number Index
This alphanumerical listing of catalog numbers has been
prepared to help you locate the appropriate page, when only
CATALOG NO.	

140

PAGE NO.

CATALOG NO.	

PAGE NO.

the catalog number is known. It is arranged in alphanumerical
order according to the first letter of the catalog number.
CATALOG NO.	

PAGE NO.

CATALOG NO.	

PAGE NO.

AE010050.................................. 70

ALRB025TBC............................ 50

CE030075................................. 72

DTGA0142S.............................. 46

AE010075.................................. 70

ALRB027TBC............................ 50

CE030100................................. 72

DTGA01454S............................ 46

AE010100.................................. 70

ALRB035TBC............................ 50

CE030150................................. 72

DTGA01754S............................ 46

AE010150.................................. 70

ALRB045TBC............................ 50

CE030250................................. 72

DTGA0202S.............................. 46

AE010250.................................. 70

ALRB055TBC............................ 50

CE030350................................. 72

DTGA02204S............................ 46

AE010350.................................. 70

ALRB080TBC............................ 50

CE030500................................. 72

DTGA0274S.............................. 46

AE010500.................................. 70

ALRB110CBC........................... 50

CE030750................................. 72

DTGA03304S............................ 46

AE020050.................................. 70

ALRB130CBC........................... 50

CE040050................................. 73

DTGA0344S.............................. 46

AE020075.................................. 70

ALRB160CBC........................... 50

CE040100................................. 73

DTGA0404S.............................. 46

AE020100.................................. 70

ALRB200CBC........................... 50

CE040150................................. 73

DTGA0514S.............................. 46

AE020150.................................. 70

ALRB250CBC........................... 50

CE040250................................. 73

DTGA0634S.............................. 46

AE020250.................................. 70

ALRB300CBC........................... 50

CE040350................................. 73

DTGA0754S.............................. 46

AE020300.................................. 70

ALRB360CBC........................... 50

CE040500................................. 73

DTGA0934S.............................. 46

AE020350.................................. 70

ALRB420CBC........................... 50

CE040750................................. 73

DTGA72S.................................. 46

AE020500.................................. 70

ALRB480CBC........................... 50

CE050050................................. 73

DTGB002754S.......................... 46

AE020750.................................. 70

ALRC002TBC............................ 50

CE050150................................. 73

DTGB008804S.......................... 46

AE030050.................................. 70

ALRC003TBC............................ 50

CE050250................................. 73

DTGB0112S.............................. 46

AE030075.................................. 70

ALRC004TBC............................ 50

CE050350................................. 73

DTGB01184S............................ 46

AE030100.................................. 70

ALRC006TBC............................ 50

CE050500................................. 73

DTGB0142S.............................. 46

AE030150.................................. 70

ALRC008TBC............................ 50

CE050750................................. 73

DTGB01454S............................ 46

AE030250.................................. 70

ALRC012TBC............................ 50

CE060050................................. 73

DTGB01754S............................ 46

AE030350.................................. 70

ALRC016TBC............................ 50

CE060075................................. 73

DTGB0202S.............................. 46

AE030500.................................. 70

ALRC025TBC............................ 50

CE060100................................. 73

DTGB02204S............................ 46

AE030750.................................. 70

ALRC027TBC............................ 50

CE060150................................. 73

DTGB0274S.............................. 46

AE060050.................................. 71

ALRC035TBC............................ 50

CE060250................................. 73

DTGB03304S............................ 46

AE060075.................................. 71

ALRC045TBC............................ 50

CE060300................................. 73

DTGB0344S.............................. 46

AE060100.................................. 71

ALRC055TBC............................ 50

CE060350................................. 73

DTGB0404S.............................. 46

AE060150.................................. 71

ALRC080TBC............................ 50

CE060500................................. 73

DTGB04404S............................ 46

AE060250.................................. 71

ALRC110CBC........................... 50

CE060750................................. 73

DTGB0514S.............................. 46

AE060350.................................. 71

ALRC130CBC........................... 50

CMT533124S............................ 35

DTGB05504S............................ 46

AE060500.................................. 71

ALRC160CBC........................... 50

CMT533134S............................ 35

DTGB0634S.............................. 46

AE060750.................................. 71

ALRC200CBC........................... 50

CMT533144S............................ 35

DTGB06604S............................ 46

AE070050.................................. 71

ALRC250CBC........................... 50

CMT533154S............................ 35

DTGB0754S.............................. 46

AE070100.................................. 71

ALRC300CBC........................... 50

CMT533164S............................ 35

DTGB07704S............................ 46

AE070150.................................. 71

ALRC360CBC........................... 50

CMT533174S............................ 35

DTGB0934S.............................. 46

AE070250.................................. 71

ALRC420CBC........................... 50

DTFA0112S............................... 47

DTGB72S.................................. 46

AE070350.................................. 71

ALRC480CBC........................... 50

DTFA01184S............................. 47

DTGB9902S.............................. 46

AE070500.................................. 71

ALRC600CBC........................... 50

DTFA0142S............................... 47

DTHA002754S.......................... 46

AE070750.................................. 71

CE010050................................. 72

DTFA01454S............................. 47

DTHA0112S.............................. 46

AE120050.................................. 71

CE010075................................. 72

DTFA01754S............................. 47

DTHA01184S............................ 46

AE120100.................................. 71

CE010100................................. 72

DTFA0202S............................... 47

DTHA0142S.............................. 46

AE120150.................................. 71

CE010150................................. 72

DTFA02204S............................. 47

DTHA01454S............................ 46

AE120250.................................. 71

CE010250................................. 72

DTFA0274S............................... 47

DTHA0202S.............................. 46

AE120350.................................. 71

CE010350................................. 72

DTFA0344S............................... 47

DTHA0274S.............................. 46

AE120500.................................. 71

CE010500................................. 72

DTFA0404S............................... 47

DTHA03304S............................ 46

AE120750.................................. 71

CE020050................................. 72

DTFA0514S............................... 47

DTHA0344S.............................. 46

ALRB002TBC............................ 50

CE020100................................. 72

DTFA0634S............................... 47

DTHA0404S.............................. 46

ALRB003TBC............................ 50

CE020150................................. 72

DTFA0754S............................... 47

DTHA0514S.............................. 46

ALRB004TBC............................ 50

CE020250................................. 72

DTFA0934S............................... 47

DTHA0634S.............................. 46

ALRB006TBC............................ 50

CE020350................................. 72

DTFA72S................................... 47

DTHA0754S.............................. 46

ALRB008TBC............................ 50

CE020500................................. 72

DTGA002754S.......................... 46

DTHA0934S.............................. 46

ALRB012TBC............................ 50

CE020750................................. 72

DTGA0112S.............................. 46

DTHA72S.................................. 46

ALRB016TBC............................ 50

CE030050................................. 72

DTGA01184S............................ 46

DTHB002754S.......................... 46

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

GENERAL
CATALOG NO.	

ELECTRICAL CONNECTION
ALPHANUMERICAL
CATALOG
DIAGRAMS
NUMBER INDEX
PAGE NO.

CATALOG NO.	

PAGE NO.

CATALOG NO.	

PAGE NO.

CATALOG NO.	

PAGE NO.

DTHB006604S.......................... 46

LUG1....................................... 134

PTBA3150015SS....................... 99

T179624S.................................. 84

DTHB0112S.............................. 46

LUG2....................................... 134

PTBA3150022LS....................... 99

T179625S.................................. 84

DTHB01184S............................ 46

LUG3....................................... 134

PTBA3150022SS....................... 99

T179629S.................................. 84

DTHB0142S.............................. 46

LUG4....................................... 134

PTBA3150030LS....................... 99

T179630S.................................. 84

DTHB01454S............................ 46

PL112600.................................. 64

PTBA3150030SS....................... 99

T179631S.................................. 84

DTHB01754S............................ 46

PL112601.................................. 64

T111683...................... 94, 97, 100

T181047................ 85, 94, 97, 100

DTHB0202S.............................. 46

PL112602.................................. 64

T111684...................... 94, 97, 100

T181048................ 85, 94, 97, 100

DTHB02204S............................ 46

PL112603.................................. 64

T111685...................... 94, 97, 100

T181049................ 85, 94, 97, 100

DTHB0274S.............................. 46

PL112700.................................. 64

T111686...................... 94, 97, 100

T181050................ 85, 94, 97, 100

DTHB03304S............................ 46

PL112701.................................. 64

T111687...................... 94, 97, 100

T181051................ 85, 94, 97, 100

DTHB0344S.............................. 46

PL112702.................................. 64

T113073...................... 95, 98, 100

T181052................ 85, 94, 97, 100

DTHB0404S.............................. 46

PL112703.................................. 64

T113074...................... 95, 98, 100

T181054...................... 95, 98, 100

DTHB04404S............................ 46

PL112704.................................. 64

T113075...................... 95, 98, 100

T181055...................... 95, 98, 100

DTHB0514S.............................. 46

PL112705.................................. 64

T113076...................... 95, 98, 100

T181056...................... 95, 98, 100

DTHB05504S............................ 46

PL112706.................................. 64

T113077...................... 95, 98, 100

T181057...................... 95, 98, 100

DTHB0634S.............................. 46

PL112707.................................. 64

T137920...................... 96, 99, 100

T181058...................... 95, 98, 100

DTHB0754S.............................. 46

PL79900.................................. 133

T137921...................... 96, 99, 100

T181059...................... 95, 98, 100

DTHB0934S.............................. 46

PL79905.................................... 78

T137922...................... 96, 99, 100

T181061...................... 96, 99, 100

DTHB72S.................................. 46

PL79906.................................... 78

T137923...................... 96, 99, 100

T181062...................... 96, 99, 100

FS1100...................................... 77

PL79907.................................... 78

T137924...................... 96, 99, 100

T181063...................... 96, 99, 100

FS11000.................................... 77

PL79908.................................... 78

T153004.................................... 17

T181064...................... 96, 99, 100

FS1150...................................... 77

PL79911.................................. 133

T153005.................................... 17

T181065...................... 96, 99, 100

FS1250...................................... 77

PL79912.................................. 133

T153006.................................... 17

T181066...................... 96, 99, 100

FS1350...................................... 77

PL79920.................................... 75

T153104.................................... 19

T181217.................................... 67

FS150........................................ 77

PL79921.................................... 75

T153105.................................... 19

T181219.................................... 67

FS1500...................................... 77

PL79922.................................... 75

T153106.................................... 19

T181220.................................... 67

FS175........................................ 77

PL79923.................................... 75

T153929.................................... 67

T181221.................................... 67

FS1750...................................... 77

PL79924.................................... 75

T153930.................................... 67

T181223.................................... 67

FS2100...................................... 77

PL79924.............................. 64, 75

T153931.................................... 67

T211688................ 85, 94, 97, 100

FS21000.................................... 77

PL79925.................................... 75

T160830.................................. 112

T211689................ 85, 94, 97, 100

FS2150...................................... 77

PL79926.................................... 75

T160831.................................. 112

T213078...................... 95, 98, 100

FS21500.................................... 77

PL79927.................................... 75

T160832.................................. 112

T213079...................... 95, 98, 100

FS22000.................................... 77

PL79928.................................... 75

T160833.................................. 112

T243570...................... 96, 99, 100

FS2250...................................... 77

PL79928.............................. 64, 75

T160834.................................. 112

T243571...................... 96, 99, 100

FS2300...................................... 77

PL79929.................................... 75

T160835.................................. 112

T2527031.................................. 29

FS23000.................................... 77

PL79929.............................. 64, 75

T169430.................................. 115

T2527051.................................. 29

FS2350...................................... 77

PL79930.................................... 75

T169431.................................. 115

T2527071.................................. 29

FS250........................................ 77

PL79930.............................. 64, 75

T169432.................................. 115

T253007S.................................. 17

FS2500...................................... 77

PL79931.................................... 75

T169433.................................. 115

T253007SS................................ 17

FS275........................................ 77

PL79931.............................. 64, 75

T169434.................................. 115

T253008S.................................. 17

FS2750...................................... 77

PLC85000............................... 115

T169435.................................. 115

T253008SS................................ 17

FS31000.................................... 77

PLC85001............................... 115

T169436.................................. 115

T253009S.................................. 17

FS3150...................................... 77

PLC85002............................... 115

T169437.................................. 115

T253009SS................................ 17

FS31500.................................... 77

PLC85003............................... 115

T169438.................................. 115

T253010S.................................. 17

FS32000.................................... 77

PLC85004............................... 115

T169439.................................. 115

T253010SS................................ 17

FS3250...................................... 77

PT061150005LS...................... 106

T179600S.................................. 84

T253011S.................................. 17

FS33000.................................... 77

PT061150005SS..................... 106

T179603S.................................. 84

T253011SS................................ 17

FS3350...................................... 77

PT061150007LS...................... 106

T179604S.................................. 84

T253012S.................................. 17

FS350........................................ 77

PT061150007SS..................... 106

T179605S.................................. 84

T253012SS................................ 17

FS3500...................................... 77

PT061150010LS...................... 106

T179608S.................................. 84

T2530134S................................ 17

FS3750...................................... 77

PT061150010SS..................... 106

T179609S.................................. 84

T253013S.................................. 17

GP1210000S............................. 22

PT061150015LS...................... 106

T179615S.................................. 84

T253013SS................................ 17

GP121000S............................... 22

PT061150015SS..................... 106

T179618S.................................. 84

T2530144S................................ 17

GP1215000S............................. 22

PT061150025LS...................... 106

T179619S.................................. 84

T253014S.................................. 17

GP12250S................................. 22

PT061150025SS..................... 106

T179620S.................................. 84

T253014SS................................ 17

GP123000S............................... 22

PTBA3150009LS....................... 99

T179621S.................................. 84

T253060.................................... 20

GP125000S............................... 22

PTBA3150009SS....................... 99

T179622S.................................. 84

T253061.................................... 20

GP12500S................................. 22

PTBA3150015LS....................... 99

T179623S.................................. 84

T253062.................................... 20

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

141

GENERAL
CATALOG NO.	

142

ELECTRICAL CONNECTION
ALPHANUMERICAL
CATALOG
DIAGRAMS
NUMBER INDEX
PAGE NO.

CATALOG NO.	

PAGE NO.

CATALOG NO.	

PAGE NO.

CATALOG NO.	

PAGE NO.

T253063.................................... 20

T2A795523S.............................. 28

TA83314.................................... 64

TB83212.................................... 64

T253064.................................... 20

T2A795533S.............................. 28

TA83315.................................... 64

TB83213.................................... 64

T253065.................................... 20

T2A795543S.............................. 28

TA83316.................................... 64

TB83215.................................... 64

T253066.................................... 20

T2A795553S.............................. 28

TB181141.................................. 59

TB83218.................................... 64

T253067.................................... 20

T335000153S............................ 26

TB181142.................................. 59

TB83219.................................... 64

T253108S.................................. 19

T3527101.................................. 29

TB181143.................................. 59

TB83220.................................... 64

T253109S.................................. 19

T3533111S................................ 23

TB181144.................................. 59

TC533111S............................... 23

T253110S.................................. 19

T353311SS................................ 25

TB181146.................................. 59

TC535153S............................... 18

T253111S.................................. 19

T3533411S................................ 25

TB181148.................................. 59

TC535163S............................... 18

T253112S.................................. 19

T3533611S................................ 22

TB181149.................................. 59

TC535173S............................... 18

T2531131S................................ 19

T379083S.................................. 29

TB181150.................................. 59

TC535183S............................... 18

T2531141S................................ 19

T3792711S................................ 27

TB181151.................................. 59

TE1530223S.............................. 18

T2535153S................................ 17

T3793123S................................ 24

TB32403.................................... 62

TE2530193S.............................. 18

T253515SS................................ 17

T379312SS................................ 25

TB32404.................................... 62

TE2530203S.............................. 18

T2535163S................................ 17

T3793133S................................ 24

TB32405.................................... 62

TE2A530213S........................... 18

T253516SS................................ 17

T379313SS................................ 25

TB32406.................................... 62

TF217437S................................ 21

T2535173S................................ 17

T3793143S................................ 24

TB32669.................................... 62

TF217439S................................ 21

T253517SS................................ 17

T379314SS................................ 25

TB54523.................................... 62

TF220105S................................ 28

T2535183S................................ 17

T3793331S................................ 26

TB54524.................................... 62

TF220155S................................ 28

T253518SS................................ 17

T3793671S................................ 22

TB81000.................................... 60

TF220255S................................ 28

T2536151S................................ 19

T3795191S................................ 27

TB81001.................................... 60

TF220505S................................ 28

T2536161S................................ 19

T3795511S................................ 28

TB81002.................................... 60

TF249873S................................ 21

T2536171S................................ 19

T3796931S................................ 27

TB81003.................................... 60

TF252520S................................ 21

T2536181S................................ 19

TA253929.................................. 60

TB81004.................................... 60

TF252794S................................ 21

T279740S.................................. 20

TA253930.................................. 60

TB81005.................................... 60

TF252795S................................ 21

T279741S.................................. 20

TA253931.................................. 60

TB81006.................................... 60

TF252796S................................ 21

T279742S.................................. 20

TA254525.................................. 62

TB81007.................................... 60

TF252797S................................ 21

T279743S.................................. 20

TA254535.................................. 62

TB81009.................................... 60

TF279260S................................ 21

T279744S.................................. 20

TA254536.................................. 62

TB81020.................................... 60

TF279261S................................ 21

T279745S.................................. 20

TA254537.................................. 62

TB81200.................................... 59

TF279262S................................ 21

T279746S.................................. 20

TA254538.................................. 62

TB81201.................................... 59

TF279263S................................ 21

T279747S.................................. 20

TA254539.................................. 62

TB81210.................................... 59

TF279264S................................ 21

T279748S.................................. 20

TA281008.................................. 60

TB81211.................................... 59

TF279265S................................ 21

T2A527121................................ 29

TA281197.................................. 62

TB81212.................................... 59

TF279266S................................ 21

T2A527131................................ 29

TA281202.................................. 62

TB81213.................................... 59

TF279267S................................ 21

T2A527151................................ 29

TA281203.................................. 62

TB81214.................................... 59

TF279300S................................ 21

T2A527171................................ 29

TA281205.................................. 62

TB81215.................................... 59

TF279301S................................ 21

T2A527181................................ 29

TA281218.................................. 60

TB81216.................................... 59

TF279302S................................ 21

T2A527191................................ 29

TA281219.................................. 60

TB81217.................................... 59

TF279303S................................ 21

T2A533081S.............................. 23

TA281220.................................. 60

TB81301.................................... 61

TF279304S................................ 21

T2A53308SS............................. 25

TA281221.................................. 60

TB81302.................................... 61

TP131023S................................ 26

T2A533091S.............................. 23

TA281240.................................. 62

TB81303.................................... 61

TP131033S................................ 26

T2A53309SS............................. 25

TA281241.................................. 62

TB81304.................................... 61

TP131043S................................ 26

T2A533101S.............................. 23

TA83221.................................... 64

TB81305.................................... 61

TP131423S................................ 27

T2A53310SS............................. 25

TA83222.................................... 64

TB81306.................................... 61

TP131433S................................ 27

T2A533281S.............................. 25

TA83223.................................... 64

TB81307.................................... 61

TP131443S................................ 27

T2A533291S.............................. 25

TA83224.................................... 64

TB81308.................................... 61

TP131053S................................ 26

T2A533401S.............................. 25

TA83300.................................... 63

TB81309.................................... 61

TP131063S................................ 26

T2A533601S.............................. 22

TA83301.................................... 63

TB81321.................................... 61

TP131073S................................ 26

T2A792681S.............................. 27

TA83302.................................... 63

TB81322.................................... 61

TP130993S................................ 26

T2A792691S.............................. 27

TA83303.................................... 63

TB81323.................................... 61

TP131123S................................ 26

T2A792701S.............................. 27

TA83304.................................... 63

TB81324.................................... 61

TP131133S................................ 26

T2A793301S.............................. 26

TA83305.................................... 63

TB81325.................................... 61

TP135000453S.......................... 26

T2A793311S.............................. 26

TA83306.................................... 63

TB81326.................................... 61

TP1533173S.............................. 23

T2A793321S.............................. 26

TA83310.................................... 64

TB81327.................................... 61

TP1533213S.............................. 23

T2A795161S.............................. 27

TA83311.................................... 64

TB81328.................................... 61

TP1533222S.............................. 23

T2A795171S.............................. 27

TA83312.................................... 64

TB81329.................................... 61

TP1533423S.............................. 25

T2A795181S.............................. 27

TA83313.................................... 64

TB83210.................................... 64

TP1533433S.............................. 25

ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

GENERAL
CATALOG NO.	

ELECTRICAL CONNECTION
ALPHANUMERICAL
CATALOG
DIAGRAMS
NUMBER INDEX
PAGE NO.

CATALOG NO.	

PAGE NO.

CATALOG NO.	

PAGE NO.

TP1533443S.............................. 25

TP793684S................................ 22

TPNS01533143S....................... 40

TP1533453S.............................. 25

TP793694S................................ 22

TPNS01533151S....................... 41

TP1533463S.............................. 25

TP793704S................................ 22

TPNS01533153S....................... 40

TP1533473S.............................. 25

TP793714S................................ 22

TPNS01533161S....................... 41

TP1533483S.............................. 25

TP793724S................................ 22

TPNS01533163S....................... 40

TP1533493S.............................. 25

TP793734S................................ 22

TPNS01533173S....................... 40

TP1533503S.............................. 25

TP793744S................................ 22

TPNS01792714S....................... 41

TP35000303S............................ 26

TP795203S................................ 27

TPNS01792724S....................... 41

TP35000753S............................ 26

TP795213S................................ 27

TPNS01792734S....................... 41

TP35001123S............................ 26

TP795223S................................ 27

TPNS01792744S....................... 41

TP35001503S............................ 26

TP795233S................................ 27

TPNS02533113S....................... 40

TP35002253S............................ 26

TP795243S................................ 27

TPNS02533123S....................... 40

TP35003003S............................ 26

TP796944S................................ 27

TPNS02533133S....................... 40

TP530193S................................ 17

TP796954S................................ 27

TPNS02533143S....................... 40

TP530203S................................ 17

TP796964S................................ 27

TPNS02533153S....................... 40

TP530213S................................ 17

TP796974S................................ 27

TPNS02533163S....................... 40

TP530223S................................ 17

TP796984S................................ 27

TPNS02533173S....................... 40

TP530233S................................ 17

TPC530193S............................. 18

WSA1...................................... 134

TP530243S................................ 17

TPC530203S............................. 18

WSA2...................................... 134

TP531193S................................ 19

TPC533123S............................. 23

WSA3...................................... 134

TP531203S................................ 19

TPC533133S............................. 23

WSA4...................................... 134

TP531213S................................ 19

TPC533143S............................. 23

WSA5...................................... 134

TP531223S................................ 19

TPC533153S............................. 23

WSA6...................................... 134

TP531233S................................ 19

TPC533163S............................. 23

WSA8...................................... 134

TP533121S................................ 24

TPC533173S............................. 23

WSB3...................................... 134

TP533123S................................ 23

TPC533183S............................. 23

WSB4...................................... 134

TP533128S................................ 24

TPC533193S............................. 23

TP533131S................................ 24

TPC3533111S......................... 120

TP533133S................................ 23

TPC3533113S......................... 120

TP533138S................................ 24

TPC3533121S......................... 120

TP533141S................................ 24

TPC3533123S......................... 120

TP533143S................................ 23

TPC3533131S......................... 120

TP533148S................................ 24

TPC3533133S......................... 120

TP533151S................................ 24

TPC3533141S......................... 120

TP533153S................................ 23

TPC3533143S......................... 120

TP533158S................................ 24

TPC3533151S......................... 120

TP533161S................................ 24

TPC3533153S......................... 120

TP533163S................................ 23

TPC3533161S......................... 120

TP533168S................................ 24

TPC3533163S......................... 120

TP533171S................................ 24

TPC3533171S......................... 120

TP533181S................................ 24

TPC3533173S......................... 120

TP533183S................................ 23

TPC3533181S......................... 120

TP533191S................................ 24

TPC3533183S......................... 120

TP533624S................................ 22

TPC3533191S......................... 120

TP533634S................................ 22

TPC3533193S......................... 120

TP533644S................................ 22

TPNS00533113S....................... 40

TP533654S................................ 22

TPNS00533123S....................... 40

TP533664S................................ 22

TPNS00533133S....................... 40

TP533674S................................ 22

TPNS00533143S....................... 40

TP536491S................................ 19

TPNS00533153S....................... 40

TP536503S................................ 19

TPNS00533163S....................... 40

TP536513S................................ 19

TPNS00533173S....................... 40

TP79085S.................................. 29

TPNS01533113S....................... 40

TP79087S.................................. 29

TPNS01533121S....................... 41

TP79088S.................................. 29

TPNS01533123S....................... 40

TP792724S................................ 27

TPNS01533131S....................... 41

TP792734S................................ 27

TPNS01533133S....................... 40

TP792744S................................ 27

TPNS01533141S....................... 41
ACME ELECTRIC • MILWAUKEE, WI • 800.334.5214 • acmetransformer.com

CATALOG NO.	

PAGE NO.

143

GENERAL

ACME TRANSFORMER GENERAL INFORMATION

General Purpose Transformers
For over eighty-eight years, Acme Electric has been manufacturing Power Conditioning Equipment for use
in industrial, commercial and OEM applications. Built on a reputation for superior service, quality and
technical expertise in the transformer market, Acme is regarded as a true industry leader.

Dry Type General Purpose Transformers

Harmonic Mitigating Transformers

Acme Electric is a full line manufacturer of low voltage (600V
and below) dry type distribution transformers using both copper
and aluminum conductor, offering an array of products between
0.05 -1000 KVA.

Harmonic currents can sometimes cause equipment to
malfunction, motors to burn out, circuit breakers to trip, and
fuses to blow. In such a case, there is an advantage to specifying
a transformer that treats the harmonic anomalies versus simply
tolerating them. Acme’s Harmonic Mitigating Transformers offer
the best solution for combating harmonics associated with nonlinear loads.

All Acme products are designed, constructed and rated to
meet or exceed the standards established by NEMA, ANSI and
IEEE. With few exceptions, all ACME transformers are
UL Listed.

K-Factor Transformers
Non-sinusoidal harmonic currents are created by much of
today’s electronic equipment. In fact, the switch mode power
supply found in desktop computers, data processors and other
office equipment is a major source of harmonic currents. Other
sources include electronic ballasts, variable frequency drives,
heating controls and rectifier circuits.
These non-linear loads can cause the transformer’s neutral
conductor to overheat, requiring special transformer design.
Acme’s non-linear load isolation transformers use special
winding techniques to minimize the eddy current losses
generated by harmonic currents. A double-sized neutral
conductor handles the excessive neutral current found in
non-linear load applications, preventing the transformer
from overheating.

These foil wound transformers will, by nature, be smaller, more
efficient, and have lower eddy current losses than their wire
wound counterparts. Acme’s Harmonic Mitigating Transformers
utilize a time proven zig-zag connection in the secondary circuit
that results in a phase shift of the triplen harmonics and causes
them to cancel one another. This technology not only results in
cooler operation and “cleaner power”, but also provides a more
energy efficient means of dealing with harmonic problems.

CSL-3 / NEMA Premium Transformers
The Acme POWERWISE C3 sets a new standard for
efficiency and reliability. Due to the use of more efficient core
material and higher-grade electrical steel, POWERWISE C3
transformers are the most efficient commercially available
transformers. With a 30% increase in efficiency performance
over standard TP-1 transformers, these energy-efficient units
exceed the requirements of the US Department of Energy
Candidate Standard Level (CSL) 3 performance standard.
POWERWISE C3 transformers achieve the lowest life cycle
costs by reducing annual energy costs. Depending on the size
of the transformer, this can mean thousands of dollars saved
per transformer. And, because they generate lower losses, they
reduce power drawn from generating stations, resulting in lower
greenhouse gas emissions and less smog.
Acme POWERWISE C3 transformers are copper wound,
3-phase common-core, dry-type ventilated isolation
transformers. Each transformer is meticulously constructed
to ANSI/IEEE Standards and is UL and CSA listed. The
POWERWISE C3 transformer is a perfect choice for K
through 12, college, university, healthcare, governmental and
commercial buildings where the total life cycle cost of the
facility and its electrical system is a priority.

144

GENERAL

ACME® TRANSFORMER™ GENERAL INFORMATION

NOTES

145

GENERAL

NOTES

146

ACME® TRANSFORMER™ GENERAL INFORMATION

GENERAL

ACME® TRANSFORMER™ GENERAL INFORMATION

NOTES

147

Peace of mind

Rock-solid power solutions
for over 80 years.
In today’s high-tech environments, it’s often the products you don’t see that are the most critical to your
success. That’s why leaders across a broad spectrum of industries look to Acme Electric for power
conversion and power conditioning equipment. While our products work quietly behind the scenes, our
engineers and researchers are out in front, discovering new ways to deliver power more efficiently in a
world ever aware of energy consumption and generation. Join customers around the globe who trust
Acme for reliable, efficient solutions in industrial, commercial, and OEM applications.

Acme Electric • N85 W12545 Westbrook Crossing • Menomonee Falls, WI 53051 • Phone: 262.293.1500 • acmetransformer.com
©2012 Acme Electric. All rights reserved.

ACME ELECTRIC 10-YEAR LIMITED* WARRANTY
Acme Electric (Acme) warrants to the original purchaser to correct by repair, replacement or refund of
original purchase price, at Acme’s option, products manufactured and sold by its Power Distribution Products
Division, that may fail in service within the applicable period as set forth below, from the date of manufacture
provided however, that conditions of operation have been normal at all times, and that the equipment has not
been subjected to abnormal stress from such causes as incorrect primary voltage or frequency, improper
ventilation or improper use. This warranty is made on the condition that prompt notice of defect is given to
Acme in writing within the warranty period, and that Acme’s inspection reveals to its satisfaction that the original
purchaser’s claim is valid under the terms of this warranty. Acme’s obligation under this warranty, which is
in lieu of all other warranties, express or implied, including the implied warranty of fitness for a particular purpose
and merchantability, is limited to replacing or repairing defective products or parts, free of charge, provided
they are returned to the factory, or refund of original purchase price, at Acme’s option. However, purchased
components (except for timers and photocells used in low voltage lighting power supplies) including but not
limited to capacitors, circuit breakers, terminal blocks, batteries, fuses and tubes shall not be covered under
this warranty. Repairs or replacement deliveries shall not interrupt or prolong the term of this warranty. Acme
will not be liable for any special, indirect, consequential or incidental damages, including, without limitation,
from loss of use, data, function or profits deriving out of or in connection with the use or performance of
the product and shall have no liability for payment of any other damages whether in an action of contract,
strict liability or tort. The remedy provided herein states Acme Electric’s entire liability and buyer’s sole and
exclusive remedy here under. Rights may vary in certain states.
*Warranty Period:
Standard Catalog Transformers — 10-year limited; Low Voltage Lighting Power Supplies, transformer —
®
10-year limited, True-Power Power Line Conditioners, — 10-year limited; Custom products — 1 year.

Acme Transformers are Shielded for Cleaner Power – Free!
®

™

Shielding is a FREE standard
feature. Acme transformers have built-

The more you use, the cleaner
your system. The Acme shield

in noise and surge protection provided
by internal electrostatic shielding. It’s
a standard feature on Acme general
purpose dry-type transformers.

constantly works to trap, knockdown
and shunt potentially damaging noise
and voltage spikes to ground at an
average reduction ratio of 100:1. The
more Acme shielded transformers you
use on the feeder and branch circuits,
the cleaner your system becomes.
Use two Acme transformers on the
same feeder and branch circuits, and
get 10,000:1 reduction.

Acme transformers provide clean
power. They provide noise and surge
protection for entire feeder and branch
circuits, plus every connected load.
And, they establish a separately derived
circuit and provide a solid single
point ground—all essential for cleaner
power. Install Acme transformers, and
take the most fundamental and cost
effective step toward cleaner power.

With Acme you get all the extra benefits
of cleaner power, absolutely FREE!

Shielded
for cleaner
power
™

acmetransformer.com

Acme Electric

Acme Electric
N85 W12545 Westbrook Crossing
Menomonee Falls, WI 53051
800.334.5214

Commercial construction • industrial automation

Full Line Product Catalog
full line product Catalog

©2013 Electrical Holdings LLC. All rights reserved.

ACM_CAT_007_0913



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History Instance ID             : xmp.iid:39ADD819E8216811994CB7522EEED076, xmp.iid:3AADD819E8216811994CB7522EEED076, xmp.iid:3BADD819E8216811994CB7522EEED076, xmp.iid:3CADD819E8216811994CB7522EEED076, xmp.iid:3DADD819E8216811994CB7522EEED076, xmp.iid:3EADD819E8216811994CB7522EEED076, xmp.iid:3FADD819E8216811994CB7522EEED076, xmp.iid:E0EBEBBB1220681195FEC61CDFA89E3A, xmp.iid:E1EBEBBB1220681195FEC61CDFA89E3A, xmp.iid:E2EBEBBB1220681195FEC61CDFA89E3A, xmp.iid:E3EBEBBB1220681195FEC61CDFA89E3A, xmp.iid:0180117407206811ACAFDD414A464FB0, xmp.iid:D58895065D2268118B4BBF8490640D6B, xmp.iid:D68895065D2268118B4BBF8490640D6B, xmp.iid:D78895065D2268118B4BBF8490640D6B, xmp.iid:D88895065D2268118B4BBF8490640D6B, xmp.iid:D98895065D2268118B4BBF8490640D6B, xmp.iid:DA8895065D2268118B4BBF8490640D6B, xmp.iid:DB8895065D2268118B4BBF8490640D6B, xmp.iid:DC8895065D2268118B4BBF8490640D6B, xmp.iid:DD8895065D2268118B4BBF8490640D6B, xmp.iid:F77F1174072068119DEFBAAC4062E5F8, xmp.iid:FC7F1174072068119DEFBAAC4062E5F8, xmp.iid:FD7F1174072068119DEFBAAC4062E5F8, xmp.iid:FE7F1174072068119DEFBAAC4062E5F8, xmp.iid:ED08A2D8282068119DEFBAAC4062E5F8, xmp.iid:EE08A2D8282068119DEFBAAC4062E5F8, xmp.iid:FEAF68428F2668118857A260F9B3AA81, xmp.iid:FFAF68428F2668118857A260F9B3AA81, xmp.iid:6E1808ED2E236811B49EA36AF8F6FDD9, xmp.iid:6F1808ED2E236811B49EA36AF8F6FDD9, xmp.iid:0180117407206811B34BAE88C16127A0, xmp.iid:0A80117407206811B34BAE88C16127A0, xmp.iid:BA40E17ABF206811B34BAE88C16127A0, xmp.iid:BB40E17ABF206811B34BAE88C16127A0, xmp.iid:BC40E17ABF206811B34BAE88C16127A0, xmp.iid:5120C093142068118C1489C255E23574, xmp.iid:5220C093142068118C1489C255E23574, xmp.iid:0A801174072068118C14C5A63CA6FC32, xmp.iid:A525D7A7072068118C14F15C5DFA99E0, xmp.iid:0A13C8E0072068118C14F15C5DFA99E0, xmp.iid:01801174072068118C1488775F1A2F40, xmp.iid:F4441774072068118C1488775F1A2F40, xmp.iid:FE441774072068118C1488775F1A2F40, xmp.iid:00801174072068118C149651F3700EFA, xmp.iid:0080117407206811871FE49223276CA9, xmp.iid:0D08146D0C206811871FE49223276CA9, xmp.iid:F77F11740720681192B083CFB0A7F79F, xmp.iid:EA6118740720681192B083CFB0A7F79F, xmp.iid:EB6118740720681192B083CFB0A7F79F, xmp.iid:EC6118740720681192B083CFB0A7F79F, xmp.iid:18ED4CC83520681192B083CFB0A7F79F, xmp.iid:015D3A371820681188C6A9BEBD02BA1C, xmp.iid:F77F117407206811871FA04E19C5AB01, xmp.iid:DDC3287407206811871FA04E19C5AB01, xmp.iid:DEC3287407206811871FA04E19C5AB01, xmp.iid:23CFF4362D2068118C14BAA8DF165070, xmp.iid:F77F117407206811871FD6C89AB2B51E, xmp.iid:0FC0227407206811871FD6C89AB2B51E, xmp.iid:EF32E9A507206811871FD6C89AB2B51E, xmp.iid:14F04B6D1D206811871FE3DD13B448E0, xmp.iid:26A3596D1D206811871FE3DD13B448E0, xmp.iid:9F65D356332068118083E25AE64D0DC1, xmp.iid:70CDB9C6362068118083E25AE64D0DC1, xmp.iid:8B387BC4382068118083E25AE64D0DC1, xmp.iid:2EFA2F74072068118083DB1032BC10CE, xmp.iid:3501E4B70D2068118083DB1032BC10CE, xmp.iid:DE732974072068118083F7256E126C45, xmp.iid:F28EC0561220681180838B01F6199CAD, xmp.iid:5413DFFA0C2068118083FCEA9889EE2D, xmp.iid:337FD5C00D2068118083FCEA9889EE2D, xmp.iid:377FD5C00D2068118083FCEA9889EE2D, xmp.iid:387FD5C00D2068118083FCEA9889EE2D, xmp.iid:A9599F1D3F2068118083CE3D47B8E5DF, xmp.iid:04801174072068118083F09CB8C34AEE, xmp.iid:08801174072068118083F09CB8C34AEE, xmp.iid:43678B2D0B2068118083FA79A11321EE, xmp.iid:C6BB6FC80C2068118083FA79A11321EE
History When                    : 2010:02:05 15:58:49-06:00, 2010:02:05 16:10:37-06:00, 2010:02:05 16:10:37-06:00, 2010:02:05 16:11:21-06:00, 2010:02:05 16:35:31-06:00, 2010:02:05 16:39:22-06:00, 2010:02:05 16:54:01-06:00, 2010:02:18 09:43:35-06:00, 2010:02:18 09:47:32-06:00, 2010:02:18 09:50:11-06:00, 2010:02:18 09:50:11-06:00, 2010:02:22 09:03:33-06:00, 2010:09:23 14:27:11-05:00, 2010:09:23 14:27:11-05:00, 2010:09:24 09:28:27-05:00, 2010:09:24 09:28:27-05:00, 2010:09:24 09:29:36-05:00, 2010:09:24 09:32-05:00, 2010:09:24 09:37:26-05:00, 2010:09:24 10:43:49-05:00, 2010:09:24 14:06:43-05:00, 2010:09:27 10:45:09-05:00, 2010:09:27 14:19:11-05:00, 2010:09:27 14:27:27-05:00, 2010:09:27 14:43:19-05:00, 2010:09:28 15:26:56-05:00, 2010:09:28 15:45:33-05:00, 2010:10:20 16:50:59-05:00, 2010:10:21 08:39:04-05:00, 2010:10:25 14:47:56-05:00, 2010:10:25 15:11:28-05:00, 2010:11:04 16:42:26-05:00, 2010:11:05 10:01-05:00, 2010:11:05 14:39:45-05:00, 2010:11:05 14:41:41-05:00, 2010:11:05 14:41:41-05:00, 2010:12:14 09:15:56-06:00, 2010:12:14 09:15:56-06:00, 2010:12:22 07:58:39-06:00, 2011:01:05 11:43:31-06:00, 2011:01:05 11:43:31-06:00, 2012:04:23 13:14:59-05:00, 2012:04:23 13:14:59-05:00, 2012:04:23 15:08:40-05:00, 2012:04:25 16:09:39-05:00, 2012:04:26 07:53:28-05:00, 2012:04:26 08:29:04-05:00, 2012:05:01 11:27:57-05:00, 2012:05:01 11:27:57-05:00, 2012:05:01 11:30:17-05:00, 2012:05:01 16:59:35-05:00, 2012:05:01 16:59:35-05:00, 2012:05:25 14:49:08-05:00, 2012:06:01 15:52:13-05:00, 2012:06:01 15:52:13-05:00, 2012:06:01 16:04:24-05:00, 2012:06:05 13:11:09-05:00, 2012:06:06 14:31:31-05:00, 2012:06:06 14:31:31-05:00, 2012:06:06 14:32:55-05:00, 2012:06:07 15:23:29-05:00, 2012:06:07 15:23:29-05:00, 2013:09:03 14:13:57-05:00, 2013:09:03 14:38:33-05:00, 2013:09:03 14:52:48-05:00, 2013:09:04 07:35:30-05:00, 2013:09:04 08:20:21-05:00, 2013:09:05 13:10:30-05:00, 2013:09:24 08:51:14-05:00, 2013:10:22 10:49:56-05:00, 2013:10:22 10:49:56-05:00, 2013:10:22 10:51:27-05:00, 2013:10:22 10:52:25-05:00, 2013:11:01 15:18:15-05:00, 2013:11:04 07:21:11-06:00, 2013:11:04 08:00:08-06:00, 2013:11:11 08:59:41-06:00, 2013:11:11 08:59:41-06:00
History Software Agent          : Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 6.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0, Adobe InDesign 7.0
History Changed                 : /, /metadata, /, /, /, /, /, /, /metadata, /, /, /metadata, /;/metadata, /metadata, /;/metadata, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /, /metadata, /, /;/metadata, /metadata, /;/metadata, /metadata, /;/metadata, /metadata, /;/metadata, /;/metadata, /;/metadata, /;/metadata, /;/metadata, /metadata, /;/metadata, /;/metadata, /metadata, /;/metadata, /;/metadata, /metadata, /;/metadata, /;/metadata, /;/metadata, /metadata, /;/metadata, /;/metadata, /metadata, /;/metadata, /;/metadata, /;/metadata, /;/metadata, /;/metadata, /;/metadata, /;/metadata, /;/metadata, /metadata, /;/metadata, /;/metadata, /;/metadata, /;/metadata, /;/metadata, /;/metadata, /metadata, /;/metadata
Derived From Instance ID        : xmp.iid:43678B2D0B2068118083FA79A11321EE
Derived From Document ID        : xmp.did:337FD5C00D2068118083FCEA9889EE2D
Derived From Original Document ID: xmp.did:39ADD819E8216811994CB7522EEED076
Derived From Rendition Class    : default
Doc Change Count                : 394
Format                          : application/pdf
Creator                         : 
Subject                         : 
Description                     : 
Title                           : 
Producer                        : PDFKit.NET 4.0.28.1
Trapped                         : False
Keywords                        : 
PDF Version                     : 1.6
Page Count                      : 150
Page Layout                     : SinglePage
Page Mode                       : UseNone

EXIF Metadata provided by EXIF.tools