Il16999.fh11 Installation Directions

: Pdf 1000482524-Installationsheet 1000482524-InstallationSheet B5 unilog

Open the PDF directly: View PDF .
Page Count: 8

Instructions for V201, V211 V251

320 Ampere Vacuum Contactor

Nonreversing or Reversing

I.L. 16999

RoHS

THE CONTACTOR

V201 contactors are designed for the control of inductive

or non-inductive loads at voltages between 120 and 1500,

AC. The units are suitable for mounting on either steel or

insulated panels. All parts are front removable. Contactors

should be protected against short circuits by branch circuit

protective devices selected in accordance with the National

Electrical Code.

This industrial type control is designed to be installed,

operated, and maintained by adequately trained workmen.

These instructions do not cover all details, variations, or

combination, check out, safe operation, or maintenance. Care

must be exercised to comply with local, state, and national

regulations, as well as safety practices, for this class of

equipment.

Mount each contactor with four 5/16 x 18 or 1/4 x 20 bolts

or three 1/4 x 20 bolts if the V201 contactor. Flat washers

should be used on bolts entering slotted holes or keyholes.

Two-pole contactors have the same current ratings as 3 pole

devices but are not suitable for controlling 3 phase motors.

Fig. 1 V201 Nonreversing Contactor

CONTROLLER RATINGS - 3 POLE CONTACTORS

Rated Insulation Voltage (Ui)=1500Volts

3 Phase Horsepower At 50 or 60 Hz

200V 230V 380V 460V 575V 800V 1500V

100 125 200 250 300 400 500

MAXIMUM CURRENT RATINGS (RMS)

Continuous Continuous Motor, Transformer

Carrying Carrying or Capacitor

Open Enclosed Make or Break

350A 320A 3200A

Maximum Capacitor Switching - 3 Phase

200 kvar at 600 volts: 500 kvar at 1500 volts

Model A or B

Formerly Type SJM

Fig. 2 Left portion of V211 Reversing Contactor

Rev 01

Fig. 3 Reversing and Nonreversing Contactor (V211, V201) Dimension Drawings (Dim. in inches)

A TWO DUAL CIRCUIT AUX-

ILIARYCONTACTSLOCAT-

ED ON BOTH SIDES OF

CINTACTOR WHEN USED

B COIL TERMINALS OCAT-

ED ON BOTH SIDES OF

CONTACTOR.

MOUNT WITH 5/16 x 18

or 1/4 x 20 bolts

8.94

6.75

16.30

6.75 1.65

8.00

SIX .375-16

TAP. LINE

TERMINALS.

SIX .375-16

TAP. LINE

TERMINALS.

6.20

5.20 LINE

COIL INTERLOCK

(A)

(B)

5.05 LOAD

2

AUXILIARY CONTACTS - TYPE J

Two mounting brackets for auxiliary contacts are provided on

each contactor. Auxiliary contacts themselves must be ordered

separately. An auxiliary contact with one or more normally

open poles may be used as the holding circuit auxiliary. A

maximum of four auxiliary units can be installed in the brackets

of each nonreversing contactor (three in each reversing

contactor). They mount by means of a spring clip and retainer

screw. To remove the auxiliary contacts, loosen the retainer

screw several times (counterclockwise) and then slide the

auxiliary contact unit out of the bracket.

Fig. 4 Reversing Controller (V251) Dimension Drawing (Dimensions in inches)

V201, V211, V251, 320 AMPERE VACUUM CONTACTOR I.L. 16999

TYPE J AUXILIARY CONTACTS

Contact Type Catalog No.

2 Normally Closed J02

2 Normally Open J20

1 Normally Open and 1 Normally Closed J11

1 Normally Open and 1 Normally Closed, DB* J1C

*DB = Delayed Break

TYPE J CONTACT RATINGS (A600, R300)

Voltage Continuous Make Break

120-600 VAC 10A 7200VA 720VA

72-120 VAC 10A 60A 720VA

28-72 VAC 10A 60A 10A

28-300 VDC 1.0A 28VA 28VA

TABLE I - ACCESSORIES

Fuse Block Kits - Meet requirements of

National Electric Code (NEC) concerning

common control fusing.

Order Qty. Description

F56 2 Contactor mounted Fuse Holder for

one 600 volt Bussmann ktk Fuse

FKR 1 Panel mounted Fuse Holder for two

Class CC (Bussmann KTKR) Fuses*

* Use when available fault current exceeds 10,000

amperes

L1 L2 L3

8.00

1.30

8.00

6.75 1.00

0.65

7.88

2.50

TYP

Mount with 5/16 - 18

or 1/4 - 20 bolts

(B)

A Coil terminal located on both

sides of contactor

B Upper contact mounted upside

down

(A)

6.00

6.20

3

COIL

The operating coil has a figure-eight shape and is really

two coils in series, with a connection to their common point.

Both coils are encapsulated in one environment-immune

coil shell, which also contains a full-wave bridge. When AC

is connected directly to terminals A and B on the coil shell,

the magnet excitation is unfiltered DC. The magnet will not

chatter as AC magnet sometimes do, but at less than rated

volts it may hum slightly. A normally-closed Type L63

auxiliary contact, set to open slightly before the armature

fully closes, is connected to terminals C and D on the coil

shell. When adjusted correctly, this contact allows a relatively

high current through the pick-up winding, and as the

contactor closes, the contact inserts the holding winding,

which reduces the coil current to a low value sufficient to

hold the magnet closed without overheating. No external

resistors are required.

Fig. 5 Control Circuit Diagrams

MAGNET OPERATING RANGE

When properly adjusted as described in previous sections,

the contactor should operate within the ranges shown in

Table II.

COIL DATA (TYPICAL VALUES)

Coil Inrush Sealed Part

Voltage Freq. VA VA/Watts Number

110-120 Any 600 20 7874A09G01

220-240 Any 600 20 7874A09G04

440-480 Any 600 20 7874A09G05

550-600 Any 600 20 7874A09G06

24 DC - 15 7874A09G07

48 DC - 15 7874A09G08

If the magnet chatters, look for mechanical interference

that prevents the magnet from sealing. If there is no

interference, then the magnet itself may be misaligned.

The magnet gap can be seen from the left and right sides

with the help of a flashlight. A screwdriver inserted into one

of the long slots (Y-Figure 9) can be used as a lever to put

a corrective set into the mounting plate around the magnet.

it should not be necessary to do this unless the contactor

has been damaged and it can be seen that the armature

does not fit against the magnet. A poor magnet to armature

fit usually produces a high dropout voltage and/or chatter.

Mechanical interference can be produced by various

incorrect adjustments. Two specific points to check are:

A. Armature travel incorrect, causing the contact

springs to be compressed into a solid, non-

resilient tube that stops the crossbar rigidly.

Refer to Eaton Service for assistance.

B. The auxiliary contact mounting brackets are mis-

adjusted, so that a contact plunger bottoms solidly

before the magnet seals. When the contactor is

fully sealed closed, there should still be a small

amount of travel remaining for the plungers. See

AUXILIARY CONTACT ADJUSTMENT.

V201, V211, V251, 320 AMPERE VACUUM CONTACTOR I.L. 16999

TABLE II - OPERATING RANGES

Pick-Up-To-Seal Drop-Out-To-Full

Rated Coil Open

Voltage Voltage Voltage

Above Below Above Below

110-120 VAC 60 77 10 50

220-240 VAC 120 152 20 100

440-480 VAC 240 304 40 200

550-600 VAC 300 385 50 250

24 VDC 12 15 2 10

48 VDC 24 30 4 20

NON-REVERSING

LOW VOLTAGE PROTECTION

WITH 3 WIRE PUSHBUTTON

START-STOP OPERATION

LOW VOLTAGE RELEASE

WITH 2 WIRE PUSHBUTTON

START-STOP OPERATION

STOP

START

STOP

START

1

2

31

3

REVERSING

DOUBLE-CIRCUIT PUSHBUTTON

LOW VOLTAGE PROTECTION

STOP

FWD

1

2

33

5

SINGLE-CIRCUIT PUSHBUTTON

LOW VOLTAGE PROTECTION

5

4

REV

STOP

FWD

REV

1

2

4

SHORT-CIRCUITS RATINGS

This motor controller is suitable for use on a circuit capable

of delivering not more than the current (rms symmetrical

amperes) shown below in circuits rated not more than the

voltage shown in Table III.

TERMINATION MEANS

Lugs for power circuit conductors are not supplied with

V201 contactors. Regardless of the termination means

used, maintain the minimum clearance shown in Table IV

for the application involved. Use adequate insulating material

as needed. One recommended terminal for conductor size

#0 though 500 MCM is Typical part Number 2119A76G01

(set of 6).

TABLE III - SHORT-CIRCUIT PROTECTION

Short-Circuit

Protective

Device

(SCPD)

Max.

size

SCPD

Current

Breaker

Inturrpting

Rating

Short-Circuit

Rating

Typical

Disconnect

Device

Cat No. Prefix

Current Voltage

Class J Fuse 600A - 65,000A 600V MCS (High

100,000A 480V Mag Trip)

Class K Fuse 600A - 65,000A 600V MCS (High

100,000A 480V Mag Trip)

Class L Fuse 600A - 22,000A 600V MCS (High

Mag Trip)

Class R Fuse 600A - 65,000A 600V MCS (High

100,000A 480V Mag Trip)

Class T Fuse 600A - 65,000A 600V MCS (High

100,000A 480V Mag Trip)

Magnetic Only¹ 400A* Marked 35,000A 600V HMCP

Type CB² HMCP

Thermal/Mag³ 600A 25,000A 25,000A 600A HLA, HLB, HLC

Type CB² 30,000A 30,000A 480V LA, LB, LC

35,000A 42,000A 480V HLA, HLB, HLC

ThermalMag.³ 600A 14,000A 14,000A 1,000V HNAM

Type CB² 22,000A 22,000A 1,000V HPBM

800A 14,000A 14,000A 1,000V HNAM

24,000A 22,000A 1,000V HPBM

¹ Instance Adjustable Trip

² Circuit Breaker

³ Inverse Time

* To comply with the NEC, thermal overload relays must be included in the

branch circuit.

Fig. 7 Reversing Control Circuit

TABLE IV - MINIMUM CLEARANCES

System Voltage Minimum Clearence

Maintain minimum clearance between live parts

and grounded parts and between live parts of opposite

polarity.

Not greater than 600 volts .375 inches

Not greater than 1000 volts .550 inches

Not greater than 1500 volts .700 inches

Fig. 6 Connection Diagram, V201

V201, V211, V251, 320 AMPERE VACUUM CONTACTOR I.L. 16999

6713C39

5

MECHANICAL INTERLOCKS

Mechanical interlocks are used when a pair of con-

tactors must be mechanically protected against the clos-

ing of one when the other is already closed. For the

horizontal configuration, the Type M33-5 is used. For

the vertical configuration, the M36-2 is used. Both

mechanical interlocks occupy one recess in each con-

tactor.

GENERAL

The V201 contactor has its main contacts sealed inside

ceramic tubes from which all air has been evacuated, i.e.,

the contacts are in vacuum. No arcboxes are required,

because any arc formed between opening contacts in a

vacuum has no ionized air to sustain it. The arc simply

stops when the current goes through zero as it alternates

at line frequency. The arc usually does not survive beyond

the first half cycle after the contacts begin to separate. The

ceramic tube with the moving and stationary contacts

enclosed is called a vacuum interrupter or a bottle,

and there is one such bottle for each pole of the con-

tactor. A two-pole contactor has two vacuum bottle, and a

three-pole contactor has three vacuum bottles. A metal

bellows (like a small, circular accordion) allows

the moving contact to be closed and pulled open from

the outside without letting air into the vacuum cham-

ber of the bottle. Both the bellows and the metal-to-

ceramic seals of modern bottles have been improved

to the point that loss of vacuum is no longer cause for

undue concern.

The moving contacts are driven by a molded plastic

crossbar supported by two pre-lubricated ball bearings

that are clamped in alignment for long life and free

motion.

The contacts in an unmounted bottle (vacuum inter-

rupter) are normally-closed, because the outside air

pressure pushes against the flexible bellows. For con-

tactor duty, the contact must be normally-open when

the operating magnet is not energized. Therefore, the

contacts of the vacuum bottles must be held apart

mechanically against the air pressure when used in a

contactor. In the contactor, all of the bottles are held

open by a single kickout spring in the rear of the con-

tactor. The kickout spring pulls against the moving

armature and crossbar and thereby forces the bottles

into the open position. In the open position, the cross-

bar is pulling the moving contacts to hold them open.

The contactor is intended to be mounted with its

mounting plate vertical and the moving stem of the

vacuum bottles aimed down. However, mounting posi-

tion is not critical. If an unusual position is required, it

is wise to check the pick-up voltage on a bench before

installation, with the contactor oriented as it will ulti-

mately be installed. The kickout spring can be adjusted

as described under Kickout Spring Adjustment, if

required to obtain the correct pick-up voltage.

CONTACT FORCE AND ALTITUDE

A vacuum contactor is affected by atmospheric

pressure on the bellows of the vacuum bottle. Up to

an altitude of 3300 feet, the contactor is designed to

tolerate normal variations in barometric pressure. If the

contactor is to be operated over 3300 feet above sea

level, consult the factory.

CONTACT WEAR ALLOWANCE

Contact material vaporizes from the contact faces

during every interruption and condenses inside the

bottle. This is normal, and is provided for by overtravel,

or wear allowance. When the contactor is fully closed,

there is a gap between the pivot plate and the bottle

nuts. See Figure 9. As the contacts wear, this gap

decreases. When any gap goes below .020 in., the unit

should be replaced. Use the .020 in. thick fork-shaped

overtravel gauge supplied for this measurement. Part

No. 7874A59H01.

CAUTION: The easiest way to close the contactor

is to energize the coil. If the coil is energized for this

or other maintenance, use adequate care to guard

against electrical shock.

Do not re-adjust the bottle nuts to reset overtravel

as the bottles wear. Once placed in service, over-

travel should be checked but not adjusted. A star-wheel

lock is included for locking the bottle nuts of each bot-

tle to prevent tampering.

CHECK-OUT, VACUUM INTERRUPTERS

The dielectric strength of the interrupters should be

checked before the contactor is energized for the first

time and regularly thereafter to detect any deterioration

in the dielectric strength of the contact gap. A good

interrupter will withstand a 5.5KV, 50 or 60 hertz test

voltage for one minute across a 0.090 inch contact gap,

which is the normal new gap.

When a vacuum bottle is tested with voltage over

5000 volts across its open gap, there is some possibi-

lity of generating X-rays. Test time should be minimized

and personnel should not be closer than 10 feet. This

is a precaution until such time as the possible hazard

is better understood and standards are published.

Periodic dielectric tests across open contacts are

desirable since under certain operating conditions the

contactor may perform satisfactorily even though one

vacuum interrupter becomes defective. Dielectric tests

should be made with the contactor in the same posi-

tion it has when operating.

The interval between periodic tests depends on the

number of operations per day, environmental factors,

and experience. It is a matter of operator judgment,

and philosophy of preventative maintenance.

V201, V211, V251, 320 AMPERE VACUUM CONTACTOR I.L. 16999

6

CHECK-OUT, MECHANICAL

Make sure all power circuits are de-energized and iso-

lated. The controller can be checked in its cabinet or

outside. A mechanical interlock must be checked installed,

to make certain that it functions properly.

If the contactor is checked in its cabinet, make cer-

tain that the contactor coil is electrically isolated, to pre-

vent feedback into a control transformer that could be

hazardous.

Connect a separate power source of correct AC volt-

age to the coil of the contactor. Operate appropriate

pushbuttons to close and open the contactor. If the con-

tactor does not close fully or does not drop out fully

refer to Magnet Operating Range.

While the contactor is closed, observe the overtravel

gap between the pivot plates on the crossbar and the

bottle nut on each pole. This overtravel gap should be

not less than .045 inch when the contactor is new. If less

refer to Contact Wear Allowance. Disconnect separate

power source before proceeding.

While the contactor is open, attempt to pull the arma-

ture forward. The armature should not move because

it should already be firmly against the plastic main

frame. If it does move refer to Kickout Spring Adjustment.

CHECK-OUT, INSULATION LEVEL

After installation, and before energizing the contactor

for the first time, measure and record the insulation

resistance between poles and from each pole to ground.

It is not practical to specify an absolute value for this

reading since it is dependent on other connected

apparatus, and conditions of service. However, any

unusually low reading or sudden reduction in this read-

ing after the contactor has been in service indicates a

possible source of trouble, and the cause should be

determined and corrected before restoring power.

MAINTENANCE

Establish a maintenance program as soon as the con-

tactor is installed and put into operation. After the con-

tactor has been inspected a number of times at monthly

intervals, and the condition noted, the frequency of

inspections can be increased or decreased to suit the

conditions found, depending upon the severity of the

contactor duty. It is a matter of operator judgment.

This industrial type control is designed to be installed,

operated, and maintained by adequately trained work-

men. These instructions do not cover all details, varia-

tions, or combinations of the equipment, its storage,

delivery, installation, check-out, safe operation, or main-

tenance. Care must be exercised to comply with local,

state, and national regulations, as well as safety prac-

tices, for this class of equipment.

All work on this controller should be done with the

main circuit disconnect device open. Also, disconnect

power from any other external circuits. Discharge any

hazardous capacitors.

Kickout Spring Adjustment

The kickout spring is not disturbed by any maintenance

described in this leaflet, and it should not need to be adjusted.

However, when the contactor is in the de-energized, open

position, the crossbar should be solidly against the frame,

so that it cannot move any further open even when pulled.

It can moved, the kickout spring must be stretched to hold

the crossbar firmly against the frame. Refer to figure 8.

Loosen the lock nuts and tighten the adjusting screws

alternately (to keep the spring on centerline) until the force

from the spring holds the crossbar properly open. Lock the

two lock nuts again.

LOSS OF VACUUM

Gross loss of vacuum is highly unlikely, but it can be

checked easily. With the contactor open, pull downward

V201, V211, V251, 320 AMPERE VACUUM CONTACTOR I.L. 16999

Kickout

Spring

Lock

Nuts

Adjusting

Screws

Fig. 8 Kickout Spring

7

on the bottle nuts, one pole at a time, using an effort

of about 20 pounds. If the bottle nuts (see Figure 9)

move easily away from their pivot, the vacuum has

probably failed and the bottle must be replaced.

It is also unlikely, but possible, to have a very slight

leak that does not change the bottle force appreciably,

but which might seriously damage the ability of the bot-

tle to interrupt. In this regard, it must be remembered

that in a three-phase ungrounded circuit, it is possible

for any two good interrupters to successfully interrupt

the circuit even if the third interrupter is weak. But this

condition should not be allowed to continue. It can be

detected only by an electrical test. See Check-out

Vacuum Interrupters.

WARNING: All work on this contactor should be

done with the main disconnect device open. As with

any contactor, there is danger of electrocution

and/or severe burns. Make certain that the power is off.

Changing Operating Coil

The operating coil has a pickup winding which is

intermittently rated. It may burn out in only minutes if

continuously energized at rated voltage because the L63

auxiliary contact does not open correctly.

The coil contains its own rectifier to convert the applied

AC into unfiltered full-wave rectified DC. DC

coils do not contain a rectifier. When the coil is at rated

voltage, the magnet will be silent. At reduced AC volt-

age, some slight hum may be heard. However the mag-

net must not chatter.

If for some reason a coil must be changed, proceed

as outlined below, referring to Figure 9.

1. De-energize all circuits as previously specified.

2. Disconnect the leads to the coil terminals, noting

their position for later reconnecting.

3. Disconnect the line and the load leads from the

contactor terminals.

4. Remove four ¼ x 20 screws (S) holding the frame

subassembly to the mounting base.

5. Lift the line side of the frame subassembly away

from the mounting base until two dowels (D) are

clear of their holes. The frame subassembly will

automatically move under pressure from the kick-

out system until the kickout bar reaches the end

of its slots in the mounting base. The frame sub-

assembly is then free to be moved outward away

from the coil and put elsewhere.

6. The coil is then accessible. Remove the two mount-

ing screws (M) to free the coil.

7. Install replacement coil and replace mounting

screws.

8. Place the frame subassembly onto the mounting

base so that the two posts extending from the

crossbar go through the oblong slots in the base

and into the notches in the kickout bar. Push the

frame subassembly a short distance along the sur-

face of the mounting plate toward the kickout bar

until the dowels (D) slip into the dowel holes.

Replace the mounting screws (S). Make sure

that the coil leads to the L63 auxiliary contact

are not pinched under the frame feet.

9. Reconnect coil and recheck contactor for correct

adjustment per this leaflet. By hand jiggle the ends

of the kickout bar(K) to make sure it is seated onto

the posts of the crossbar.

10. Reconnect line and load cables.

Auxiliary Contact Adjustment

The nominal .34 pretravel gap shown for the L63

auxiliary contact (normally-closed) in the left upper por-

tion of Figure 9 is important. If the gap is too big, the

hold winding of the operator coil will not be inserted

as the contactor closes, and the pick-up winding will

burn out, because the pickup winding is only intermit-

tently rated. If the gap is too small, the hold winding

will be inserted too soon, reducing the force to hold

before the contactor is closed, and producing an oscil-

lation like a doorbell. In a particular contactor, the .34

gap may need slight adjustment to avoid these problems.

The key is not the measurement, but the perform-

ance of the magnet. Replacement L63 auxiliary

contacts are available as Part No. 578D461G03.

The Type J auxiliary contacts are not as critical. In

the open position, their plungers may rest lightly against

the operating arm, or may have a small clearance.

However, neither of the auxiliary contact plungers

should bottom solidly in the closed contactor position, as

discussed under Magnet Operating Range. If required,

the auxiliaries can be adjusted by resetting their mounting

brackets in their slotted holes. Adjust the L63 by loosening

the two slotted hexagonal washer head screws the hold

the L63 mounting bracket, repositioning and tightening.

These bracket mounting screws are accessible from the

top side of the contactor and are recognized by the slotted

holes under their heads.

Inspection After Short Circuit

The V201 contactor is intended to be protected by power

fuses and/or a circuit breaker in accordance

with the National Electrical Code (NEC). However, the

magnitude of a short circuit may exceed the damage

threshold of the vacuum bottles. After a short circuit, the

unit should be examined for any apparent physical damage,

or deformation of conductor bars and cables. If there is any

evidence of severe stress, it is recommended that the unit

be replaced. If the overtravel has changed significantly

(from the last inspection) on one or more bottles, the unit

should be replaced.

A dielectric test would not by itself confirm that the unit

should be returned to service after a fault. How-

ever, if there is no physical evidence of stress, and if

the overtravel exceeds the .020 in. minimum, the bot-

V201, V211, V251, 320 AMPERE VACUUM CONTACTOR I.L. 16999

8

TABLE V - RECOMMENDED DRIVING TORQUE

Driving

Torque

(lb.-in.)

Fig. 9

Item

Refer.

Coil Terminals (4)

Base Mouting Screws (4)

Coil Mounting Screws (2)

Location (Qty.)

7-9

60-65

10-15

-

S

M

Insulation Level

Refer to the insulation resistance measurements

between poles and from each pole to ground that were

recorded at start-up and subsequent intervals. Measure

the same points in the same manner and record. Inves-

tigate any sudden reduction in resistance or any unusually

low reading.

Dust and moisture are detrimental to electrical equip-

ment. Industrial equipment is designed to tolerate a

less-than-perfect environment. However, excessive dust

can cause trouble, and should be wiped or blown off

tles can then be dielectrically tested as outlined previ-

ously. If physical stress, overtravel, and dielectric are

O.K., it is reasonable to return the unit to service after a

fault.

at appropriate intervals. If the contactor is wet for any

reason, it must be dried until insulation resistance be-

tween poles and from each pole to ground has returned

to normal.

Effective 5/07

Supersedes 16999D (4/90)

Eaton Corporation

Electrical Components Division

875 Greentree Road

Pittsburgh, PA 15220

Printed in USA

V201, V211, V251, 320 AMPERE VACUUM CONTACTOR I.L. 16999