Power Line Surge Arrestor DF

User Manual: power-line-surge-arrestor-DF

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Surge Arresters Catalog
MacLean Power Systems offers a full range of polymer housed surge arresters meeting the
needs for transmission, substation, distribution and secondary surge protection. With over 75
years of arrester design and manufacturing under the Joslyn brand, combined with MacLean
Power Systems’ polymer manufacturing expertise, the MPS arrester product offering provides
maximum surge protection for the long term.
All of our arresters are designed for the growing demands of power quality and reliability with
safety of workers and the public as a first priority. Each design maximizes protection for each
application to extend the life of operating lines and equipment.
Distribution
• Zforce™ direct ‘mold-on’ polymer housing design provides the best protection for overhead
distribution circuits and the best protection against moisture ingress for the most reliable
service life
• ZE elbow arresters for distribution underground open point protection
Substation
• ZSP polymer housed station class arresters are lightweight and easy to install
• ZIP polymer housed intermediate class arresters designed for lower energy demands
• ZJP polymer housed, light fault duty, intermediate class arresters for low fault current system
applications

Transmission Lines
• ZQPT heavy duty, polymer housed transmission line arresters are designed for line protection to significantly reduce lightning outages
and extend recloser life
• ZXLA Insulator-Arrester combination assembles designed with MPS transmission insulators to provide an easy to install combination
for maximum insulation and over-voltage protection
Secondary Voltage
• SurgeTec - 175, 480 and 650 volt secondary arresters with a patented fault withstand safety design. Provide protection for meters and
facility service entrance

Table of Contents
Arresters General Information

AR-1

Arrester Ratings for Various System
Voltages

Station Class Arresters

AR-5

ZSP Electrical Characteristics

AR-21

Zforce™ Distribution Arresters

AR-6

ZSP Physical Characteristics and
Clearances

AR-22

Zforce ZNP™ and ZHP™ Distribution
Arresters

AR-8

ZSP Ordering information

AR-24

Zforce ZRP™ Distribution Arresters

AR-9

Station and Intermediate Class
Arresters Accessories

AR-25

Zforce™ EZ Ordering Information

AR-10

Transmission Line Arresters

AR-27

Zforce™ Accessories

AR-11

Surge Tec® Secondary Arresters

AR-31

ZE Elbow Distribution Arresters

AR-12

Surge Tec® Physical and Electrical
Characteristics

AR-32

ZIP and ZJP Intermediate Class
Surge Arresters

AR-14

Surge Tec® Typical Wiring
Connections

AR-33

ZIP Intermediate Class Arresters

AR-15

Surge Tec® Catalog Number Selection
Guide

AR-34

ZJP Intermediate Class Arresters

AR-17

ZIP/ZJP Ordering Information

AR-19

Numerical Index

AR-20

AR-35

MacLean Power Systems
Please note that because MacLean Power Systems follows a policy of continuous product improvement, we reserve the right to change
specifications and drawings at any time without notice.

Arresters General Information
Insulation Coordination

is used for the intermediate arresters and station class arresters
from 3-96kV. A 1000 ampere surge is used for station arresters
rated 108kV to 198kV. All current impulses have a 45/90
microsecond wave shape.

Arresters are used to limit voltage surges on an electrical system
to a known and controlled level. The concept of insulation
coordination means that properly installed arresters limit the
incoming voltage surges to levels within the withstand capability
of the insulating system. Arresters prevent insulation, such as
air, porcelain, oil, cable or wire insulation, etc. from breaking
down, therefore, significantly improving the reliability of the
electrical system. Figure 1 demonstrates this basic concept. The
difference between the two curves is the protective margin.

To determine the margin of protection, the following equation is
used:
Percent Margin =
		

[(

Transformer Withstand Level
Arrester Protective Level

) ]

- 1 x 100

A Type ZSP arrester rated 108 kV protecting a transformer with
a 450 kV BIL has the following margins of protection:
Chopped Wave Withstand - Equivalent Front of Wave
Percent Margin =
			

[(

1.15 x 450
273.7

) ]
-1

x 100 = 82 %

Full Wave Withstand - Discharge Voltage for a 10kA
			
Impulse Current
Percent Margin =
		

[(

450
249.2

) ]
-1

x 100 = 74%

Switching Surge Withstand - Switching Surge Voltage
Percent Margin =
		

[(

0.83 x 450
195.2

) ]
-1

x 100 = 73%

All margins are well above the minimum 20% margin recommendation of the ANSI application guide C62.22.
Application

The process of correlating the insulation withstand levels of
the protected equipment and the protective characteristics of
surge arresters is known as insulation coordination. Without
sparkgaps, the insulation coordination between the metal oxide
arrester and the insulation being protected is defined by the
discharge voltage of the arrester from very short times in the
impulse region to longer times in the switching surge region. The
equivalent front-of-wave of the arrester is used to coordinate with
the chopped wave withstand value, generally defined as 1.15 x
BIL of the transformer. For station class arresters, the equivalent
front-of-wave (EFOW) of the arrester is obtained by discharging
a 10kA (5kA for intermediate arresters) impulse current wave
which produces a voltage wave cresting in 0.5 microseconds.

Proper application of metal oxide arresters is needed to receive
appropriate performance and adequate protection. Arrester
selection depends on the application and should be based on the
level of protection needed, durability of the arrester and quality
assurance of the manufacturer.
Level of protection is the first and most important factor in
applying arresters. The purpose of an arrester is to protect system
equipment against damaging surges. The level of protection
is a function of the discharge voltage characteristics of the
arrester. The lower the discharge voltage, the greater the level
of protection provided. The discharge voltage characteristics
of distribution arresters provide excellent margins of protection
needed for even the most severe applications.

Discharge voltage, at a specific current level, is used to coordinate
with the equipment Basic Insulation Level (BIL). The discharge
voltage is the crest voltage that results from an 8/20 microsecond
current surge. The coordinating current selected will depend
on the shielding of the substation and other system conditions.
A typically recommended value for the coordinating current is
10kA.

Protective margins are not the only criteria in arrester selection.
Proper performance is based on selecting the appropriate ratings
to withstand system conditions. The maximum continuous lineto-ground voltage of the system should not exceed the MCOV
rating of the arrester. The MPS arrester ratings are in accordance
with the ANSI/IEEEC62.11-2005 Standard for Metal Oxide Surge
Arresters for AC Power Circuits. Temporary overvoltages (TOV)
can have damaging effects on metal oxide arresters. The
excellent TOV characteristics of the MOV arresters will exceed
the potential system overvoltages when properly selected.

The switching surge protective level is determined by
comparing the switching surge response of the arrester,
with the switching surge withstand level of the transformer,
generally defined as .83 x BIL of the transformer. The voltage of
the arrester is a function of the current. A current of 500 amperes

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-3

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Arresters General Information
Quality Assurance

There are four basic types of arresters defined by industry
standards. The arrester type selected for the application depends
on the equipment being protected and what level of protection is
required.

ISO 9001:2000 Certified
MacLean Power Systems metal oxide facility is ISO 9001:2000
certified. Years of extensive quality control processes easily
met the requirements of ISO certification, and has been proven
with unsurpassed field performance of arresters. MPS employs
an extensive quality system from raw materials through final
assembly.

Secondary—Available in ratings up to 650 volts, secondary
arresters are used to protect equipment at the utilization voltage
level.

Each block is selected for final assembly based on discharge
voltage, to assure the discharge voltage of the arrester will not
exceed published values. After final assembly, the complete
arrester once again receives a series of electrical tests including
watts loss, reference voltage and radio influence voltage. Only
units accepted by the computerized tester continue on for final
packaging and shipping.

Distribution—Typically used for the protection of equipment on
power distribution circuits. They are available in ratings up to
36kV. This type of arrester is further defined by Normal Duty and
Heavy Duty and includes special application arresters such as
riser pole or dead front elbow type.
Intermediate—Available in ratings up to 144kV, intermediate type
arresters offer improved protective characteristics and durability.
They are generally used for protection of smaller substations, or
medium class power equipment.

Research and Development
Research and development is an on-going process at MPS.
Our engineers are continually striving for new materials or
processes that will lead to improved arrester performance in
the field. Specifically designed test equipment provides the
capability to properly evaluate new developments. Research
and Development is an important part of our business and
commitment to the future.

Station—Available in ratings up to 216kV, station class arresters
offer the best performance among the four different types. They
are typically used to protect substation equipment, rotating
machines or other applications where premium protection is
required.

Fault Current Data
Fault current testing, also known as short circuit testing,
demonstrates an arrester failure based on the most probable
failure modes over a range of fault currents. Two failure modes
are tested: 1) a fuse wire runs along the side of the internal valve
elements to simulate an internal flashover (moisture or collar
failure), 2) overvoltage the arrester until the resistive elements
fail to simulate a system overvoltage exceeding the unit’s TOV
capability.
ANSI/IEEE C62.11 2005, specifies the test procedures and
acceptance criteria for fault current tests on surge arresters.

Temporary Overvoltage
Temporary power frequency overvoltages (TOV) can occur due
to the voltage rise on unfaulted phases during a line-to-ground
fault, the loss of the neutral ground of an effectively grounded
system, sudden loss of load, generator over speed and other
conditions. Overvoltages exceeding an arrester’s MCOV (Uc)
rating cause an increase in current, resulting in increased power
loss and temperature, thereby, affecting the arrester’s stability.

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-4

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Arrester Ratings for Various System Voltages
System L-L Voltage (kV)
Nominal

Maximum

2.40

2.52

4.16

4.37

4.80

5.04

6.90

7.25

8.32

8.74

12.00
12.47

12.70
13.20

13.20

13.90

13.80

14.50

23.00
24.90
34.50
46.00
69.00

115.00

Grounded Neutral Circuits

24.20
26.10
36.20
48.30
72.50
121.00
121.00

138.00

145.00

Rating
3*

6*

230.00

169.00

242.00

MCOV
2.55

5.10

Rating

MCOV

3*

2.55

6*

5.10

9*

7.65

10*

8.40

15

12.70

9*

7.65

10

8.40

18

15.30

9*

7.65

15*

12.70

18

15.30

15

12.70

18*

15.30

10
10*

8.40

12

10.20

10*

8.40

12

10.20

-

-

18*

15.30

27*

22.00

21

17.00

30

18*

15.30

30*

24.40

21

17.00

36

29.00

27*

22.00

39*

31.50

30

24.40

45

36.50

36*

29.00

48*

39.00

39

31.50

54

42.00

54*

42.00

66*

54.00

60

48.00

72

57.00

90*

70.00

-

-

96

76.00

108*

84.00

108
108*
120
120*

161.00

Ungrounded, Temporarily Ungrounded
Impedance Grounded Circuits

132

84.00
98.00

120

98.00

132*

106.00

144

115.00

-

-

106.00

144*

115.00

144

115.00

168

131.00

172*

140.00

-

-

180

144.00

192

152.00

*Nominal recommended ratings are highlighted. Use higher rating for severe duty.

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-5

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Zforce™ Distribution Arresters

Features

• Zforce™ mold-on polymer housing for the ultimate seal against
moisture ingress
• High strength fiberglass wrap for high fault-withstand design
• Integrated Ground Lead Disconnect for fast, reliable operation.
Operates in less than 2 seconds at 1 amp and less than 2 cycles at
1,000 amps

Zforce™ ZNP (5kA Normal Duty Polymer)
Zforce™ ZHP (10kA Heavy Duty Polymer)
Zforce™ ZRP (10kA Riser Pole Polymer)
Durability
Heavy Duty and Riser Pole Distribution Class arresters have been
called upon to serve in the most demanding of applications. Typically
unshielded, overhead lines can produce some of the most severe
lightning surges on the power system. MPS distribution arresters
are designed to meet the demands of protecting underground and
overhead equipment, respectively. Tested in accordance with the
latest industry standard, ANSI/IEEE C62.11-2005 for metal oxide
arresters, Zforce™ distribution arresters withstand the following
minimum design tests:
Zforce Design Performance:
• High Current Short Duration
• ZNP - 65kA
• ZHP & ZRP - 100kA
• Low Current Long Duration
• ZNP - 150A
• ZHP & ZRP - 250A
• Duty Cycle per ANSI
• ZNP - 5kA
• ZHP & ZRP - 10kA
• Nominal Discharge Class per IEC:
•ZNP - 5kA
•ZHP & ZRP - 10kA, Class 1
• Minimum Switching Energy Capability (2 Surges)
•ZNP - 2.2kJ/kV MCOV
•ZHP - 2.7kJ/kV MCOV
•ZRP - 2.2kJ/kV MCOV
• Lightning Energy Capability (1 Surge)
•ZNP - 2.3kJ/kV MCOV
•ZHP - 3.4kJ/kV MCOV
•ZRP - 2.7kJ/kV MCOV
• Fault Withstand Capability
• ZNP - 10kA
• ZHP & ZRP - 20kA
• RUS Listed

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-6

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Zforce™ Distribution Arresters
Terminal Connection
Distribution arrester line terminals utilize a stainless steel four
corner “Star Clamp” for maximum conductor range and speed
of installation. The ground terminals utilize a stainless steel “U
clamp”. Both connectors securely clamp aluminum or copper
conductors from No. 10 solid through 2/0 stranded. MPS specifies
that no more than 20 ft/lbs of torque be applied to the line and
ground terminals.
Voltage P.U. of MCOV (Uc)
Duration (sec)

ZNP

ZHP

ZRP

0.02

1.77

1.80

1.54

0.10

1.70

1.73

1.48

1.00

1.61

1.63

1.40

10

1.52

1.54

1.31

100

1.47

1.47

1.26

1000

1.42

1.43

1.22

TOV Graph and Capability 3kV to 36kV

Overvoltage per Unit of Arrester
MCOV (Uc)

2.0
1.9

ZHP

1.8
1.7

ZNP

1.6
1.5
ZRP

1.4
1.3
1.2
0.01

0.1

1

10

100

1000

10000

Time (Seconds)
Zforce ZNP™ (5kA Normal Duty Polymer)
Physical Characteristics
Creepage1

Strike

A

B

kV

In

Mm

In

Mm

In

Mm

9

15.04

382

7.69

195

8.83

224

10

17.41

442

8.00

203

9.14

232

18

26.59

675

11.23

285

12.23

311

In
4.00

C
Mm
102

D

In

Mm

7.71

195

8.02

204

11.16

283

In

Weight2
Mm

3.93

100

5.43

138

Lb

Kg

2.90

1.32

3.00

1.36

4.80

2.18

Electrical Characteristics
Voltage
Rating (Ur)
(kV-rms)

MCOV
(Uc)3
(kV-rms)

Max Equiv
FOW4
(kV-Crest)

Max Switch
Surge6
(kV-Crest)

1.5 kA

2.5 kA

3.0 kA

5.0 kA

10 kA

20 kA

9

7.65

29.9

23.7

25.4

26.2

26.6

28.2

30.5

33.8

10

8.4

32.9

26.3

28.1

29.2

29.6

31.3

33.9

37.4

18

15.3

59.7

47.4

50.7

52.3

53.1

56.4

61.0

67.5

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

Maximum Discharge Voltage (kV-Crest) Using an 8/20 ms Current Impulse

AR-7

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Zforce ZNP™ and ZHP™ Distribution Arresters

Zforce ZHP™ (10kA Heavy Duty Polymer)
Physical Characteristics
Creepage1

Strike

A

B

kV

In

Mm

In

Mm

In

Mm

3

7.96

202

5.47

139

6.52

6

11.94

303

6.02

153

9

15.92

404

7.76

197

10

18.28

464

8.21

12

19.90

506

15

23.84

18

In

C
Mm

D

In

Mm

166

5.40

7.66

195

8.80

224

209

9.14

8.91

226

606

10.01

27.87

708

21

31.85

24

Weight2
Lb

Kg

137

2.30

1.05

6.54

166

3.00

1.37

7.68

195

3.60

1.64

232

8.02

204

3.70

1.68

9.94

253

8.82

224

4.20

1.91

254

11.09

282

10.02

254

4.90

2.23

11.40

290

12.23

311

11.16

283

5.90

2.68

809

12.54

319

13.37

340

12.30

312

6.50

2.96

35.83

910

13.69

348

14.51

369

13.44

341

7.10

3.23

27

39.92

1014

14.52

369

15.66

398

14.59

371

7.80

3.52

30

43.90

1115

15.51

394

16.78

426

15.71

399

8.40

3.80

36

51.95

1320

17.79

452

19.13

486

18.06

459

9.60

4.38

4.30

109

In

Mm

3.93

100

5.43

138

Electrical Characteristics
Voltage
Rating (Ur)
(kV-rms)

MCOV
(Uc)3
(kV-rms)

Max Equiv
FOW5
(kV-Crest)

Max Switch
Surge6
(kV-Crest)

Maximum Discharge Voltage (kV-Crest) Using an 8/20 ms Current Impulse
1.5 kA

2.5 kA

3.0 kA

5.0 kA

10 kA

20 kA

3

2.55

10.4

7.8

8.5

8.8

8.9

9.3

9.9

10.9

6

5.10

20.7

15.5

16.9

17.5

17.7

18.6

19.8

21.8

9

7.65

31.0

23.3

25.4

26.2

26.6

27.9

29.7

32.7

10

8.40

34.5

25.9

28.2

29.1

29.5

31.0

33.0

36.3

12

10.20

41.3

311.0

33.8

34.9

35.4

37.2

39.6

43.5

15

12.70

51.7

38.8

42.2

43.6

44.2

46.5

49.5

54.4

18

15.30

62.0

46.5

50.7

52.3

53.1

55.8

59.4

65.3

21

17.00

72.3

54.3

59.1

61.0

61.9

65.1

69.3

76.2

24

19.50

82.6

62.1

67.6

69.7

70.7

74.4

79.2

87.0

27

22.00

92.9

69.9

76.0

78.4

79.6

83.7

89.1

98.9

30

24.40

103.3

77.6

84.4

87.1

88.4

93.0

99.0

108.8

36

29.00

124.0

93.1

101.3

104.5

106.1

111.5

118.8

130.5

Zforce ZRP™ (10kA Riser Pole Polymer)
Physical Characteristics
Creepage1

Strike

A

B

In

Mm

In

Mm

In

Mm

In

Mm

Lb

Kg

7.96

202

5.47

139

6.52

166

5.40

137

2.30

1.05

6

11.94

303

6.02

153

7.66

195

6.54

166

3.00

1.37

9

15.92

404

7.76

197

8.80

224

7.68

195

3.60

1.64

10

18.28

464

8.21

209

9.14

232

8.02

204

3.70

1.68

12

19.90

506

8.91

226

9.94

253

8.82

224

4.20

1.91

15

23.84

606

10.01

254

11.09

282

10.02

254

4.90

2.23

18

27.87

708

11.40

290

12.23

311

11.16

283

5.90

2.68

21

31.85

809

12.54

319

13.37

340

12.30

312

6.50

2.96

24

35.83

910

13.69

348

14.51

369

13.44

341

7.10

3.23

27

39.92

1014

14.52

369

15.66

398

14.59

371

7.80

3.52

30

43.90

1115

15.51

394

16.78

426

15.71

399

8.40

3.80

36

51.95

1320

17.79

452

19.13

486

18.06

459

9.60

4.38

109

AR-8

In

Weight2

3

4.30

Mm

D

kV

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

In

C

3.93

5.43

Mm

100

138

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Zforce ZRP™ Distribution Arresters

Electrical Characteristics
Voltage
Rating (Ur)
(kV-rms)

MCOV
(Uc)3
(kV-rms)

Max Equiv
FOW5
(kV-Crest)

Max Switch
Surge6
(kV-Crest)

Maximum Discharge Voltage (kV-Crest) Using an 8/20 ms Current Impulse
1.5 kA

2.5 kA

3.0 kA

5.0 kA

10 kA

20 kA

40 kA

3

2.55

8.6

6.2

6.8

7.1

7.2

7.5

8.2

9.0

10.3

6

5.10

17.1

12.4

13.6

14.1

14.3

15.1

16.3

18.1

20.6

9

7.65

25.7

18.6

20.3

21.2

21.5

22.6

24.5

27.1

30.9

10

8.40

28.5

20.7

22.6

23.5

23.9

25.1

27.2

30.1

34.3

12

10.20

34.2

24.8

27.1

28.2

28.7

30.1

32.6

36.1

41.2

15

12.70

42.8

31.1

33.9

35.3

35.9

37.7

40.8

45.2

51.5

18

15.30

51.3

37.3

40.7

42.3

43.0

45.2

49.0

54.2

61.7

21

17.00

59.9

43.5

47.5

49.4

50.2

52.7

57.1

63.2

72.0

24

19.50

68.4

49.7

54.2

56.4

57.4

60.2

65.3

72.2

82.3

27

22.00

77.0

55.9

61.0

63.5

64.5

67.8

73.4

81.3

92.6

30

24.40

85.5

62.1

67.8

70.5

71.7

75.3

81.6

90.3

102.9

36

29.00

102.6

74.5

81.4

84.6

86.0

90.4

97.9

108.4

123.5

Notes:
1) Reduce creepage by 1.45 inches (36.8 mm) when ordering without insulating bracket
2) Does not include metal mounting bracket hardware
3) MCOV = Maximum Continuous Operating Voltage that may be applied coninuously between the terminals of the arrester
4) The equivalent Front-of-Wave is the maximum discharge voltage for a 5kA impulse current wave which produces a voltage wave cresting in 0.5 ms
5) The equivalent Front-of-Wave is the maximum discharge voltage for a 10kA impulse current wave which produces a voltage wave cresting in 0.5 ms
6) Based on a switching surge current impulse of 45x90 ms, 500 amperes
* Single pack modifier required for 30 kV and 36 kV ratings

Insulated Bracket Data
Arrester
Rating
(kV)

Creepage

E

F

G (Radius)

In

Mm

Skirts

In

Mm

In

Mm

In

Mm

3 - 15

4.60

117

3

1.875

47.62

2.70

66.58

1.312

33.34

18 - 36

9.12

232

6

2.130

54.10

2.95

74.93

1.656

42.06

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-9

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Zforce™ Distribution Arrester EZ Ordering Information
Z_P
Z_P

kV

Pole Type

ZNP

-

ZHP

-

ZRP

-

P0
0

P0

-

kV(Ur)

Zinc Oxide Normal Duty 5 kA Polymer
Arrester
Zinc Oxide Heavy Duty 10 kA Polymer
Arrester
Zinc Oxide Riser Pole 10 kA Polymer
Arrester

P2

P3

-

Additional Bracket Options

P5

-

00
02
12

N
W

-

No NEMA Brackets
Transformer Type “A” Bracket
Crossarm Bracket (top mounting with
backstrap assembly)
Transformer Type “N” Bracket
Transformer Type “W” Bracket

Top Terminal Options*

P6

P3

3/8” x 16 SSTL Studs (line and ground
terminals)

00

-

02
12

-

B

Standard - Four corner SSTL clamp
and nut
Two four corner SSTL clamps
18” Insulated Wire Lead with two ring
terminals/flat washer/lock washer

-

3

-

Standard Insulating Bracket, with GLD
Standard Insulating Bracket, no GLD
No Insulating Bracket, with GLD (line
arrester)
No Insulating Bracket, no GLD
(switchgear application)

Universal Insulating Cap
(Birdguard)

P4
0
1
2

-

0

10

Bagging Options
-

Boss Mounting Hardware

Packaging Options

#S

-

#K

-

Single pack modifier required only for
30kV and 36kV ratings
Bulk packing

Two four Corner SSTL Clamps
in up/down configuration

3/8” x 16 SSTL Stud

No Insulating Cap (Birdguard)

9 kV Duty Cycle Rating

12.0” Copper Strap

Standard Insulating Bracket w/ GLD

0

N

02

0

P7

Standard - “U” clamp and nut
Two four corner SSTL clamps (up/down)
12.0” Copper Strap

Heavy Duty

-

P6

* Top/Bottom Terminal: Fits wire ranges for aluminum or copper
conductors from #10 solid (3.0mm diameter) through 2/0
stranded (11.0mm diameter)

Without Cap
With Cap
Fuse Kit

Catalog Order Number Example

ZHP

P5

Bottom Terminal Options*
-

P7

Insulating Bracket Options

0
1
2

P4

0
A
C

03, 06, 09, 10, 12, 15, 18, 21, 24, 27,
30, 36

P1

P1

P2

General Options

Duty-Cycle Rating of Arrester

-

12

B

Boss Mounting Hardware

Transformer Type N Mounting
Bracket

Optional Birdguard

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-10

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Zforce™ Distribution Arrester Accessories
Optional Bagging Accessories

Transformer mounting hardware is available
upon request. To specify, add suffix “-B” for boss
mounting hardware to catalog number.

Flipper Fuse Kit

The AD524-Z fuse kit includes a stationary
terminal for mounting on the transformer
bushing.
Its spring arm subjects the
fuselink to moderate tension during steadystate operation and provides a positive whip
action to quickly separate the link during
fault conditions. An insulating cap for the
transformer busing and an insulating sleeve
for the spring arm are included for wildlife
protection.

Boss Mounting
Hardware
Cat No. AD1137-B

Mounting Brackets

Type “C”
Catalog No. 7106A0025

Type “A”
Catalog No. 7106A0013

Type “E”
Catalog No. J24515

Type “W”
Catalog No. 7106A0047

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-11

Type “N”
Catalog No. 7106A0015

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZE Elbow Distribution Arresters
Design
The type “ZE” arrester was developed specifically for protection of
underground distribution systems. It is installed at the open point
of the underground system to prevent voltage wave doubling.
When also installed at an intermediate point, voltage reflections
from the open point arrester are harmlessly discharged. The
housing, made of peroxide cured EPDM rubber, is totally shielded
with a molded conductive EPDM jacket to maintain the dead front
concept. The one-piece construction requires no field assembly.
The “ZE” dead front elbow arrester is RUS listed.

Reliability

Rigid control standards insure that all material conforms to
exacting engineering specifications. Each finished arrester is
subjected to electrical tests to determine reference voltage, total
leakage current and corona levels.
The type “ZE” arrester incorporates surge protection in a onepiece, shielded elbow housing. It permits arrester installation on
standard separable connector bushings, maintaining the dead
front concept.

Performance
The “ZE” elbow arrester consistently withstands the following
minimum design tests:
• High Current-Short Duration: 2 current surges of 40kA
magnitude
• Low Current-Long Duration: 20 current surges of 75 amperes
magnitude and 2000 microsecond duration
• Duty Cycle: 22 discharges with a current surge of 5kA magnitude
and 8/20 microsecond wave shape
• Following each of these tests, the “ZE” arrester remains
thermally stable and the discharge voltage increase at rated
current is less than 10%

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

Application
The type “ZE” arrester rated voltage designates the 60Hz voltage
applied across the arrester terminals during the duty cycle test. In
addition, the type “ZE” arrester Maximum Continuous Operating
Voltage (MCOV) designates the maximum power frequency
voltage that may be continuously applied across the arrester in
service. Selection of the appropriate type “ZE” rating is made on
the basis that the maximum continuous line-to-ground voltage on
the system does not exceed the MCOV of the arrester.
The 10kV, 18kV and 27kV rated arresters are designed for
application on nominal 15kV, 25kV and 35kV URD systems,
respectively. The three ratings include standard ANSI/IEEE 386
separable connector interface designs that are compatible with
major interface suppliers at each voltage level.

AR-12

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZE Elbow Distribution Arresters
Probe

C

Standard load break probe is shipped assembled with each unit

D

Ground Cable

Size: #5 stranded copper wire- 37” length

Lubricant

E

Each arrester is shipped with a packet of silicone grease, wiping cloth
and instruction sheet

A
B

2-1/2"
Physical Characteristics
Catalog
Number

kV
Rating

8132B0003J001

3

8132B0006J001

6

8132B0010J001
8132B1010J001

A

B

C

In

Mm

In

Mm

7.0

177.8

4.6

116.8

10

D

In

Mm

In

8.1

205.7

10.1

256.5

E
Mm

In

Mm

Elbow
Interface*
15kV

7.7

195.6

2.9

73.7

25kV

Weight
Lb

Kg

3.0

1.4

3.5

1.6

8132B0012J001

12

8.3

210.8

5.9

149.9

8.1

205.7

15kV

4.0

1.8

8132B0018J001

18

10.0

254.0

7.6

193.0

10.1

256.5

25kV

4.7

2.1

8132B2024J001

24

13.3

337.8

10.3

261.6

12.6

320.0

10.1

256.5

4.0

101.6

5.2

2.4

13.4

340.4

11.0

279.4

10.1

256.5

7.7

195.6

2.9

73.7

6.4

2.9

14.5

368.3

11.5

292.1

12.6

320.0

10.1

256.5

4.0

101.6

8.5

3.9

8132B1027J001
8132B2027J001

27

35kV2

Electrical Characteristics
Voltage
Rating (Ur)
(kV-rms)

MCOV
(kV-rms)

Max Equiv
FOW*
(kV-Crest)

Maximum Discharge Voltage (kV-Crest) Using an 8/20 ms Current Impulse
1.5 kA

3.0 kA

5.0 kA

10 kA

20 kA

3

2.55

10.0

8.5

8.8

9.3

10.2

12.9

6

5.10

20.1

17.0

17.6

18.6

20.4

25.8

10

8.40

30.5

28.0

29.0

30.7

33.7

42.6

12

10.20

40.2

34.0

35.2

37.2

40.8

51.6

18

15.30

60.3

51.0

52.8

55.8

61.2

77.4

24

19.50

80.4

68.0

70.4

74.4

81.6

103.2

27

22.00

90.5

76.5

79.2

83.7

91.8

116.1

Notes:
* Compatible with standard ANSI/IEEE 386, 1995
1) Small 35kV Interface, 21.1/36kV Figure 7 of ANSI/IEEE 386, 1995
2) Large 35kV Interface, 21.1/36.6kV Figure 8 of ANSI/1EEE 386, 1995

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-13

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZIP and ZJP Intermediate Class Surge Arresters
Design
The design consists of a number of metal oxide valve elements
contained within a fiberglass winding and then inserted into
the polymer housing. Type “ZIP”/“ZJP” arresters are shipped
as single units for all ratings. There is no need to combine
sections, even for the 144kV duty cycle rating. The metal oxide
valve elements combine excellent protective characteristics with
steady state per­formance to maximize protec­tion over many
years of service.
Fault Current Withstand
The severity of a failure depends on the duration and magnitude
of the available fault current conducting through the arrester at
the time of failure. This type of arrester, with its polymer housing,
eliminates the potential danger of porcelain fragmentation. The
design uses a fiberglass epoxy wrap to relieve the pressure that
is present during a fault.
Benefits
The use of polymer housings for our arresters provides many
benefits over porcelain designs.
The type “ZIP”/“ZJP” intermediate class arresters offer the
benefits of polymer housings for system voltages up to 161kV.
The arresters are approximately 1/5 the weight of the porcelain
equivalent. Handling and installation become much easier tasks.
Also, the risk of damage to the housing is reduced compared to
porcelain.
Performance
ZIP:
3 kV through 144 kV duty cycle rating, 2.55 kV through 115 kV
MCOV, 2.4 kV through 161 kV system line-line voltage
ZJP:
3 kV through 45 kV duty cycle rating, 2.55 kV through 36.5
MCOV, 2.4 kV through 46 kV system line-line voltage
The arrester designs are tested in accordance with the latest
industry strandards for metal oxide arresters. The “ZIP”/“ZJP”
arresters consistently withstand the following minimum design
tests:
• High Current-Short Duration: 100 kA crest
• Duty Cycle per ANSI: 10 kA
• Nominal Discharge Current per IEC: 10 kA
• Line Discharge Class per IEC: Class 2
• Minimum Energy Capability: 5.0 kJ/kV MCOV
• Fault Withstand Capability:
• ZIP—50 kA rms
• ZJP—20 kA rms
• Working Cantilever Strength:
• ZIP—5000 in.-lbs.
• ZJP—720 in.-lbs.
• ZIP RUS listed

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

• LIGHTWEIGHT—The lightweight design provides much easier
handling and installation. The polymer arresters are less than
1/5 the weight of the porcelain equivalents. The burden on
mounting structures and personnel is greatly reduced.
• REDUCED CLEARANCES—The smaller physical size of the
polymer housing and the line side of the arrester allow the
clearances to be reduced. This provides added flexibility with
design and layout since they can be used in tighter areas.
• SINGLE UNIT DESIGN—The single unit design simplifies
installation by reducing handling that was previously required
for multi-section porcelain designs. This also provides improved
contamination performance over multi-unit arresters.
• DAMAGE RESISTANT—The polymer housings resist damage
from handling where porcelain units are most vulnerable to
chipping and breakage.
• SAFETY—The “ZIP”/“ZJP” arresters minimize safety hazards
to personnel and nearby equipment that exists with porcelain
housings.
Reliability
Each completed “ZIP”/“ZJP” arrester unit must pass the following
electrical tests: reference voltage, power loss, and RIV.

AR-14

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZIP Intermediate Class Surge Arresters
Three Phase Installation Layout

The holes for mounting are .56” (42 mm) for
1/2” bolts. Mounting bolts and washers are not
furnished with arrester.

Nameplates

In addition to the information that is included on
the tripod base, a nameplate is attached to the
casting to provide all of the required arrester
details. The catalog number, the rated voltage,
the maximum continuous operating voltage, and
the pressure relief current rating are shown. The
serial number includes information about the time
of manufacture.

Physical Characteristics and Clearances
Minimum Clearances1
Catalog
Number

kV
Rating

MCOV
kV

ZIP0003

3

ZIP0006

6

ZIP0009
ZIP0010
ZIP0012
ZIP0015

Total Height
In

Mm

2.55

6.80

173

5.10

6.80

173

9

7.65

6.82

173

10

8.40

6.87

175

12

10.20

6.85

174

15

12.70

8.31

ZIP0018

18

15.30

ZIP0021

21

17.00

ZIP0024

24

19.50

ZIP0027

27

22.00

30

ZIP0030
ZIP0033

Figure

1

Creepage

A
In

R
Mm

In

Weight

In

Mm

15.70

400

15.80

401

211

20.20

512

9.22

234

22.00

559

5.8

147

10.70

272

26.40

671

6.8

173

12.10

308

30.70

781

7.8

198

13.10

333

33.70

856

24.40

14.60

370

38.10

967

5.5
9.5

Mm

140

241

10.5

267

8.8

224

Lb

Kg

8.0

3.6

9.0

4.1

11.0

5.0

12.0

5.4

14.0

6.4

15.0

6.8

33

26.70

15.90

403

40.30

1024

16.0

7.3

ZIP0036

36

29.00

16.80

428

44.20

1122

12.5

318

10.8

274

17.0

7.8

ZIP0039

39

31.50

18.30

466

48.60

1234

13.5

343

11.8

300

18.0

8.2

ZIP0042

42

34.00

19.20

489

51.40

1307

14.5

369

12.8

326

19.0

8.7

ZIP0045

45

36.50

21.30

542

54.50

1385

15.5

394

13.8

351

20.0

9.1

ZIP0048

48

39.00

23.00

583

61.70

1567

16.5

419

14.8

376

24.0

10.9

ZIP0054

54

42.00

24.90

634

67.60

1718

18.5

470

16.8

427

ZIP0060

60

48.00

27.90

708

76.40

1940

20.5

521

18.8

478

25.0

11.3

ZIP0066

66

54.00

30.50

774

80.80

2054

57.00

32.40

823

88.60

2251

597

21.8

554

12.3

72

23.5

27.0

ZIP0072
ZIP0084

84

68.00

37.20

945

103.00

2620

25

635

23.30

ZIP0090

90

70.00

41.40

1051

109.00

2775

40.0

1016

ZIP0096

96

76.00

43.80

1112

119.00

3027

42.0

1067

108

84.00

48.00

1218

133.00

3379

46.0

ZIP0120

120

98.00

53.30

1355

149.00

3788

ZIP0132

132

106.00

59.30

1507

161.00

144

115.00

63.50

1613

177.00

ZIP0108

ZIP0144

2

3

29.0

13.2

592

32.40

14.70

33.0

838

41.0

18.6

35.0

889

43.0

19.6

1168

39.0

991

47.0

21.4

49.0

1245

42.0

1067

51.0

23.1

4088

51.0

1296

44.0

1118

55.0

25.0

4507

67.0

1702

55

1397

73.0

33.2

Notes:
1) These minimum clearances are determined by the protective capabilities of the arresters and they are secondary to any other
clearance requirement that may exist for specific applications.

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-15

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZIP Intermediate Class Surge Arresters
Electrical Characteristics
Maximum Discharge Voltage (kV-Crest)
Using an 8/20 ms Current Impulse

10 s
(kV-rms)

Max Equiv
FOW2
(kV-Crest)

Max
Switch
Surge3
(kV-Crest)

1.5 kA

3.0 kA

5.0 kA

10 kA

20 kA

40 kA

3.7

3.5

8.55

6.34

6.79

7.17

7.50

8.09

8.96

10.1

5.10

7.41

7.04

17.1

12.7

13.6

14.3

15

16.2

17.9

20.2

7.65

11.10

10.6

25.9

19.2

20.5

21.7

22.7

24.5

27.1

30.5

10

8.40

12.20

11.6

28.3

21

22.5

23.7

24.8

26.8

29.6

33.4

ZIP0012

12

10.20

14.80

14.1

34.2

25.4

27.2

28.7

30

32.4

35.8

40.4

ZIP0015

15

12.70

18.40

17.5

43.1

32

34.2

36.1

37.8

40.8

45.1

50.8

ZIP0018

18

15.30

22.20

21.1

51.3

38.1

40.8

43

45

48.6

53.8

60.6

ZIP0021

21

17.00

24.70

23.5

56.6

42

44.9

47.5

49.6

53.6

59.3

66.8

ZIP0024

24

19.50

28.30

26.9

68.5

50.8

54.3

57.4

60

64.8

71.7

80.7

ZIP0027

27

22.00

31.90

30.4

77.3

57.4

61.4

64.8

67.8

73.2

81

91.2

ZIP0030

30

24.40

35.40

33.7

83.5

61.9

66.2

70

73.2

79

87.4

98.4

ZIP0033

33

26.70

38.80

36.9

91.9

68.2

72.9

77

80.6

86.9

96.3

108

ZIP0036

36

29.00

42.10

40

98.9

73.4

78.5

82.9

86.7

93.5

104

117

ZIP0039

39

31.50

45.70

43.5

109

80.5

86.1

90.9

95.1

103

114

128

ZIP0042

42

34.00

49.40

47

117

86.7

92.7

97.9

102

111

122

138

ZIP0045

45

36.50

53.00

50.4

125

92.9

99.4

105

110

119

131

148

ZIP0048

48

39.00

56.60

53.9

137

102

109

115

120

130

143

161

ZIP0054

54

42.00

61.00

58

155

115

123

130

136

146

162

182

ZIP0060

60

48.00

69.70

66.3

167

124

132

140

146

158

175

197

ZIP0066

66

54.00

78.40

74.6

184

136

146

154

161

174

193

217

ZIP0072

72

57.00

82.80

78.7

198

147

157

166

173

187

207

233

ZIP0084

84

68.00

98.70

93.9

234

173

185

196

205

221

245

276

ZIP0090

90

70.00

102.00

96.7

251

186

199

210

220

237

262

296

ZIP0096

96

76.00

110.00

105

267

198

212

224

234

253

280

315

ZIP0108

108

84.00

122.00

116

297

220

235

249

260

281

311

350

ZIP0120

120

98.00

142.00

135

334

248

265

280

293

316

350

394

ZIP0132

132

106.00

154.00

146

367

273

292

308

322

348

385

433

ZIP0144

144

115.00

167.00

159

396

293

314

332

347

374

414

467

TOV1

Voltage
Rating
(kV-rms)

MCOV
(kV-rms)

1s
(kV-rms)

ZIP0003

3

2.55

ZIP0006

6

ZIP0009

9

ZIP0010

Catalog
Number

Notes:
1) Temporary Overvoltage without any Prior Duty
2) The equivalent Front-of-Wave is the maximum discharge voltage for a 10kA impulse current wave which produces a voltage wave cresting in a 0.5 ms
3) Based on a switching surge current of 500 amperes

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-16

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZJP Intermediate Class Surge Arresters
Physical Characteristics and Clearances

Catalog
Number

Total
Height

kV
Rating

MCOV
kV

ZJP0003-1211

3

2.55

ZJP0006-1211

6

5.10

ZJP0009-1211

9

7.65

6.82

ZJP0010-1211

10

8.40

6.87

175

ZJP0012-1211

12

10.20

6.85

174

ZJP0015-1211

15

12.70

8.31

211

ZJP0018-1211

18

15.30

9.22

21

17.00

24

19.50

ZJP0027-1211

27

ZJP0030-1211
ZJP0033-1211

173

15.7

Weight

In

Mm

Lb

Kg

400

9.5

241

5.5

140

7.7

3.5

400

9.5

241

5.5

140

8.1

3.7

400

9.5

241

5.5

140

8.4

3.8

401

9.5

241

5.5

140

8.6

3.9

401

9.5

241

5.5

140

10.7

4.9

20.2

512

9.5

241

5.5

140

11

5

234

22

559

9.5

241

5.8

147

11.4

5.2

10.7

272

26.4

671

9.5

241

6.8

173

11.9

5.4

12.1

308

30.7

781

9.5

241

7.8

198

14

6.4

22.00

13.1

333

33.7

856

10.5

267

8.8

224

14.7

6.7

30

24.40

14.6

370

38.1

967

10.5

267

8.8

224

14.7

6.7

33

26.70

15.9

403

40.3

1024

10.5

267

8.8

224

15.7

7.1

ZJP0036-1211

36

29.00

16.8

428

44.2

1122

12.5

318

10.8

274

16.6

7.5

ZJP0039-1211

39

31.50

18.3

466

48.6

1234

13.5

343

11.8

300

17.5

8

ZJP0042-1211

42

34.00

19.2

489

51.4

1307

14.5

369

12.8

326

18.4

8.4

ZJP0045-1211

45

36.50

21.3

542

54.5

1385

15.5

394

13.8

351

19.3

8.8

1

In

R
Mm

6.8

Mm

A
In

ZJP0024-1211

In

Creepage
Mm

ZJP0021-1211

Figure

Minimum Clearances1

15.8

Notes:
1) These minimum clearances are determined by the protective capabilities of the arresters and they are secondary to any other
clearance requirement that may exist for specific applications.

ZJP D Series Intermediate Class Arresters
Physical Characteristics and Clearances
Catalog
Number

kV
Rating

ZJP0003-D005

3

ZJP0006-D005

6

Width A

Length B

Nominal
Strike

Nominal
Creepage

In

In

In

In

Mm

Mm

11.1

282

6.8

Mm
173

ZJP0009-D005

9

11.12

283

6.82

ZJP0010-D005

10

11.17

284

6.87

175

ZJP0012-D005

12

11.15

283

6.85

174

ZJP0015-D005

15

12.61

320

8.31

ZJP0018-D005

18

13.52

343

ZJP0021-D005

21

15

ZJP0024-D005

24

ZJP0027-D005

15.7

Mm
400

Weight
Lb

Kg

4.8

2.2

5.2

2.3

5.6

2.5

5.7

2.6

7.8

3.5

15.8

401

211

20.2

512

8.2

3.7

9.22

234

22

559

8.5

3.9

381

10.7

272

26.4

671

9

4.1

16.42

417

12.1

308

30.7

781

11.1

5

27

17.41

442

13.1

333

33.7

856

ZJP0030-D005

30

18.88

480

14.6

370

38.1

967

11.8

5.4

ZJP0033-D005

33

20.18

513

15.9

403

40.3

1024

12.8

5.8

ZJP0036-D005

36

21.14

537

16.8

428

44.2

1122

13.7

6.2

ZJP0039-D005

39

22.64

575

18.3

466

48.6

1234

14.6

6.6

ZJP0042-D005

42

23.54

598

19.2

489

51.4

1307

15.5

7

ZJP0045-D005

45

25.64

651

21.3

542

54.5

1385

16.4

7.5

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

4.6

116

AR-17

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZJP Intermediate Class Surge Arresters
Electrical Characteristics
Maximum Discharge Voltage (kV-Crest)
Using an 8/20 ms Current Impulse

10 s
(kV-rms)

Max Equiv
FOW2
(kV-Crest)

Max
Switch
Surge3
(kV-Crest)

1.5 kA

3.0 kA

5.0 kA

10 kA

20 kA

40 kA

3.7

3.5

8.55

6.34

6.79

7.17

7.5

8.09

8.96

10.1

5.10

7.41

7.04

17.1

12.7

13.6

14.3

15

16.2

17.9

20.2

7.65

11.1

10.6

25.9

19.2

20.5

21.7

22.7

24.5

27.1

30.5

10

8.40

12.2

11.6

28.3

21

22.5

23.7

24.8

26.8

29.6

33.4

ZJP0012

12

10.20

14.8

14.1

34.2

25.4

27.2

28.7

30

32.4

35.8

40.4

ZJP0015

15

12.70

18.4

17.5

43.1

32

34.2

36.1

37.8

40.8

45.1

50.8

ZJP0018

18

15.30

22.2

21.1

51.3

38.1

40.8

43

45

48.6

53.8

60.6

ZJP0021

21

17.00

24.7

23.5

56.6

42

44.9

47.5

49.6

53.6

59.3

66.8

ZJP0024

24

19.50

28.3

26.9

68.5

50.8

54.3

57.4

60

64.8

71.7

80.7

ZJP0027

27

22.00

31.9

30.4

77.3

57.4

61.4

64.8

67.8

73.2

81

91.2

ZJP0030

30

24.40

35.4

33.7

83.5

61.9

66.2

70

73.2

79

87.4

98.4

ZJP0033

33

26.70

38.8

36.9

91.9

68.2

72.9

77

80.6

86.9

96.3

108

ZJP0036

36

29.00

42.1

40.0

98.9

73.4

78.5

82.9

86.7

93.5

104

117

ZJP0039

39

31.50

45.7

43.5

109

80.5

86.1

90.9

95.1

103

114

128

ZJP0042

42

34.00

49.4

47

117

86.7

92.7

97.9

102

111

122

138

ZJP0045

45

36.50

53

50.4

125

92.9

99.4

105

110

119

131

148.3

TOV1

Voltage
Rating
(kV-rms)

MCOV
(kV-rms)

1s
(kV-rms)

ZJP0003

3

2.55

ZJP0006

6

ZJP0009

9

ZJP0010

Catalog
Number

Notes:
1) Temporary Overvoltage without any Prior Duty
2) The equivalent Front-of-Wave is the maximum discharge voltage for a 10kA impulse current wave which produces a voltage wave cresting in a 0.5 ms
3) Based on a switching surge current of 500 amperes

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-18

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZIP/ZJP Intermediate Class Arrester Ordering Information

=

50kA

ZJP

=

20kA

kV Rating

Z

I
J

P

X

X

X

X

-

X

X

X

1

Configuration
(not available on “D” Series)

-or-

D

X

X

X

{

ZIP

{

Fault
Withstand

Top & Bottom Connectors
(not available on “D” Series)

“D” Series ZJP only

0003

=

3

D001

=

Crossarm Bracket

0006

=

6

D005

=

Standard Unit

0009

=

9

D106

=

with Birdguard

0010

=

10

0012

=

12

D109

=

Birdguard and
Crossarm Bracket

0015

=

15

0018

=

18

0021

=

21

0024

=

24

0027

=

27

0030

=

30

0033

=

33

0036

=

36

0039

=

39

0042

=

42

0045

=

45

0048

=

48

0054

=

54

0060

=

60

0066

=

66

0072

=

72

0084

=

84

0090

=

90

0096

=

96

0108

=

108

0120

=

120

0132

=

132

0144

=

144

1 - Eyebolt with a
90° angle bracket

1 - Stainless steel
top cover with
tripod base

Conductor Range:
0.25” - 0.75”
(6.35 - 19.05 mm)

2 - Four hole NEMA
pad with a 90°
angle

2 - Tripod on top
with stainless
steel bottom
cover (Inverted
Mounting)

Conductor Range:
0.25” - 1.25”
(6.35 - 31.75 mm)

3 - Four hole NEMA
pad with a 45°
angle

3 - Stainless steel
covers on both
ends

Conductor Range:
0.25” - 1.25”
(6.35 - 31.75 mm)

4 - Tripod on both
ends

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-19

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Station Class Arresters
Design
The design consists of a number of metal oxide valve ele­ments
contained within a fiberglass winding and then inserted into the
polymer housing. Type “ZSP” arresters are shipped as single
units for all ratings. There is no need to combine sections, even
for the 216kV duty cycle rating. The metal oxide valve elements
combine excellent protective characteristics with steady state
performance to maximize protection over many years of service.
Fault Current Withstand
The severity of a failure depends on the duration and magnitude
of the available fault current conducting through the arrester at the
time of failure. The “ZSP” type arrester with its polymer housing
eliminates the potential danger of porcelain fragmentation. The
“ZSP” design uses a high strength fiberglass epoxy wrap to
relieve the pressure that is present during a fault. The arresters
achieved a fault withstand capability of 80kA.
Benefits
The use of polymer housings for our arresters provides many
benefits over porcelain designs.

The type “ZSP” station class arresters offer the benefits of
polymer housings for system voltages up to 230kV. The arresters
are approximately 25% the weight of the porcelain equivalent.
Handling and installation become much easier tasks. Also, the
risk of damage to the housing is reduced compared to porcelain.
Performance
“ZSP” arresters are available in duty cycle ratings from 3kV
through 216kV (2.55kV through 174kV MCOV) and are designed
for system line-line voltages of 2.4kV through 230kV. The
“ZSP” arrester design is tested in accordance with the latest
industry standards for metal oxide arresters. The “ZSP” arresters
consistently withstand the following minimum design tests:

• LIGHTWEIGHT—The lightweight design provides much easier
handling and installation. The polymer arresters are less than
1/5 the weight of the porcelain equivalents. The burden on
mounting structures and personnel is greatly reduced.
• REDUCED CLEARANCES—The smaller physical size of the
polymer housing and the line side of the arrester allow the
clearances to be reduced. This provides added flexibility with
design and layout since they can be used in tighter areas.
• SINGLE UNIT DESIGN—The single unit design simplifies
installation by reducing handling that was previously required
for multi-section porcelain designs. This also provides improved
contamination performance over multi-unit arresters.
• DAMAGE RESISTANT—The polymer housings resist damage
from handling where porcelain units are most vulnerable to
chipping and breakage.
• SAFETY—The ZSP arresters minimize safety hazards to
personnel and nearby equipment that exists with porcelain
housings.
Reliability
Each completed “ZSP” arrester unit must pass the following
electrical tests: reference voltage, power loss, and RIV.

• High Current-Short Duration: 100kA crest
• Duty Cycle per ANSI: 10kA
• Nominal Discharge Current per IEC: 10kA
• Line Discharge Class per IEC: Class 2 or 3
• Minimum Energy Capability: 6.1 kJ/kV MCOV
• Fault Withstand Capability: 80kA rms
• Working Cantilever Strength: 10,000 in.-lbs.
• RUS Listed

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-20

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZSP Electrical Characteristics
Electrical Characteristics
Maximum Discharge Voltage (kV-Crest)
Using an 8/20 ms Current Impulse

10 s
(kV-rms)

Max Equiv
FOW2
(kV-Crest)

Max
Switch
Surge3
(kV-Crest)

1.5 kA

3.0 kA

5.0 kA

10 kA

20 kA

40 kA

3.74

3.53

8.23

5.87

6.32

6.65

6.96

7.49

8.27

9.38

5.10

7.47

7.06

16.5

11.7

12.6

13.3

13.9

15

16.5

18.8

7.65

11.2

10.6

24.7

17.6

19

20

20.9

22.5

24.8

28.2

10

8.40

12.3

11.6

27.8

19.8

21.4

22.5

23.5

25.3

28

31.7

ZSP0012

12

10.20

14.9

14.1

33

23.6

25.4

26.7

27.9

30.1

33.2

37.7

ZSP0015

15

12.70

18.6

17.6

41.3

29.4

31.7

33.4

34.9

37.6

41.5

47.1

ZSP0018

18

15.30

22.4

21.2

49.8

35.5

38.2

40.2

42.1

45.3

50

56.8

ZSP0021

21

17.00

24.9

23.5

55.2

39.4

42.4

44.6

46.7

50.3

55.5

63

ZSP0024

24

19.50

28.6

27

65

46.4

49.9

52.6

55

59.2

65.4

74.2

ZSP0027

27

22.00

32.2

30.5

72.9

52

56

59

61.7

66.4

73.3

83.2

ZSP0030

30

24.40

35.7

33.8

79.9

57

61.4

64.6

67.6

72.7

80.3

91.1

ZSP0033

33

26.70

39.1

37

88

62.7

67.6

71.1

74.4

80.1

88.4

100.4

ZSP0036

36

29

42.5

40.2

96.2

68.6

73.9

77.8

81.5

87.6

96.8

109.8

ZSP0039

39

31.50

46.1

43.6

103

73.5

79.1

83.3

87.2

93.8

103.6

117.5

ZSP0042

42

34

49.8

47.1

113.5

81

87.2

91.8

96.1

103.4

114.2

129.5

ZSP0045

45

36.5

53.5

50.6

120.3

85.8

92.4

97.3

101.8

109.5

120.9

137.2

ZSP0048

48

39

57.1

54

128.6

91.7

98.7

104

108.8

117.1

129.3

146.7

ZSP0054

54

42

61.5

58.2

143.6

102.4

110.3

116.1

121.5

130.8

144.4

163.8

ZSP0060

60

48

70.3

66.5

163.1

116.4

125.3

131.9

138.1

148.5

164

186.1

ZSP0063

63

50.25

73.6

69.6

170.3

121.4

130.8

137.7

144.1

155

171.2

194.3

ZSP0066

66

52.50

76.9

72.7

177.5

126.6

136.3

143.5

150.2

161.6

178.4

202.4

ZSP0072

72

57

83.5

78.9

192.3

137.1

147.7

155.5

162.7

175.1

193.3

219.3

ZSP0072-58*

72

58

85

80.3

192.3

137.1

147.7

155.5

162.7

175.1

193.3

219.3

ZSP0090

90

70

102.6

97

227.1

161.9

174.4

183.6

192.2

206.7

228.3

259

ZSP0090-74*

90

74

108.4

102.5

240.6

171.6

184.8

194.6

203.6

219

241.9

274.5

ZSP0096

96

76

111.3

105.3

257.1

183.4

197.5

207.9

217.6

234.1

258.5

293.3

ZSP0108

108

84

123.1

116.3

273.7

195.2

210.2

221.3

231.6

249.2

275.2

312

ZSP0108-88*

108

88

128.9

121.9

287.2

204.8

220.6

232.3

243.1

261.5

288.8

328

ZSP0120

120

98

143.6

135.7

326

239.7

250.6

263.9

276.1

297.1

328

372

ZSP0120-102*

120

102

149.4

141.3

331

243

254

267.5

279.9

301

333

377

ZSP0132

132

106

155.3

146.8

347

255

266.7

280.8

293.8

316

349

396

ZSP0144

144

115

168.5

159.3

385

282.4

295.3

311

325

350

387

439

ZSP0150

150

121

177.3

167.6

411

302

315

332

347

374

413

468

ZSP0168

168

131

191.9

181.4

450

331

346

364

381

410

453

514

ZSP0172

172

140

205.1

193.9

460

338

354

372

390

419

463

525

ZSP0180

180

144

211

199.4

481

354

370

389

407

438

484

549

ZSP0192

192

152

222.7

210.5

511

375

392

413

432

465

514

583

ZSP0198

198

160

234.4

221.6

532

391

409

431

451

485

535

607

ZSP0210

210

170

249.1

235.5

562

413

432

454

476

512

565

641

ZSP0216

216

174

254.9

241

577

424

443

466

488

525

580

658

TOV1

Voltage
Rating
(kV-rms)

MCOV
(kV-rms)

1s
(kV-rms)

ZSP0003

3

2.55

ZSP0006

6

ZSP0009

9

ZSP0010

Catalog
Number

Notes:
1) Temporary Overvoltage without any Prior Duty
2) The equivalent Front-of-Wave is the maximum discharge voltage for a 10kA impulse current wave which produces a voltage wave cresting in a 0.5 ms
3) Based on a switching surge current of 500 amperes for arresters rated 2.55kV MCOV to 84kV MCOV and 1000 amperes for arresters from 88kV MCOV to 174kV MCOV
* The catalog number for special MCOV levels would use the following format = ZSP0090-1231-74 and ZSP 0108-1231-88

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-21

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZSP Physical Characteristics and Clearances
Physical Characteristics and Clearances
Minimum Clearances1
Catalog
Number

Total Height

Creepage

kV
Rating

MCOV
kV

ZSP0003

3

2.55

ZSP0006

6

5.10

ZSP0009

9

7.65

ZSP0010

10

8.40

ZSP0012

12

10.20

ZSP0015

15

12.70

ZSP0018

18

15.30

ZSP0021

21

17.00

ZSP0024

24

19.50

ZSP0027

27

22.00

ZSP0030

30

24.40

ZSP0033

33

26.70

13.6

344

41.3

1048

ZSP0036

36

29.00

14.5

367

42.2

ZSP0039

39

31.50

16

406

ZSP0042

42

34.00

ZSP0045

45

36.50

18.1

461

48

39.00

ZSP0054

54

42.00

ZSP0060

60

48.00

ZSP0063

63

51.00

ZSP0066

66

54.00

ZSP0072

72

57.00

ZSP0072-58*

72

58.00

ZSP0090

90

70.00

ZSP0090-74*

90

74.00

ZSP0096

96

76.00

ZSP0108

108

84.00

ZSP0108-88*

108

88.00

ZSP0120

120

98.00

ZSP0120-102*

120

102.00

ZSP132

132

ZSP0144

144

ZSP0150
ZSP0168

ZSP0048

Figure

1

In

Mm

In

Mm

7.6

192

18.1

461

9.2

11

12.8

19.6

23.3

23.9

234

12

305

13

330

14

356

15

381

16

406

17

432

1071

18

457

48

1218

19

483

54.4

1382

20

508

21
23

30.1

325

36.2

498

60.2

591

R
Mm

24.1

279

A
In

72.4

612

765

920

1528

1838

607

73

1855

882

109.6

2783

34.7

Weight

In

Mm

6

152

7

178

8

203

9

229

10

254

11

279

12

305

13

330

14

356

15

381

533

16

406

584

17

432

19

483

20

508

Lb

Kg

18

8.2

21

9.5

25

11.3

29

13.2

31

14.1

33

15

36

16.3

41

18.6

44

20

52

23.6

53

24

77

34.9

84

38.1

25

635

26

660

27

686

22

559

31

787

25

635

32

813

26

660

34

864

28

711

35

889

30

762

36

914

31

787

40

1016

41

1041

35

889

99

44.9

957

121

3075

44.9

1140

145.4

3694

106.00

45

1144

145.6

3697

42

1067

37

940

100

45.4

115.00

46.3

1175

146.8

3728

46

1168

40

1016

102

46.3

150

121

55.8

1418

182.1

4624

48

1219

43

1092

139

63

168

131.00

59.8

1519

194.1

4931

64

1626

53

1346

146

66.2

ZSP0172

172

140.00

63.5

1613

206.4

5243

65

1651

54

1372

154

69.8

ZSP0180

180

144.00

67

1702

56

1422

162

73.5

192

152.00

70

1778

58

1473

163

73.9

ZSP0198

198

157.00

72

1829

61

1549

162

73.5

ZSP0210

210

170

68.4

1739

219.9

5586

75

1905

63

1600

165

74.8

ZSP0216

216

174

69.1

1755

220.5

5602

76

1930

65

1651

167

75.7

ZSP0192

2

67.2

1706

218.6

5553

Notes:
1) These minimum clearances are determined by the protective capabilities of the arresters and they are secondary to any other clearance
requirement that may exist for specific applications.
* The catalog number for special MCOV levels would use the following format = ZSP0090-1231-74 and ZSP 0108-1231-88

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-22

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZSP Physical Characteristics and Clearances

Three Phase Installation Layout

Nameplate

The holes for mounting are .56” (42 mm) for
1/2” bolts. Mounting bolts and washers are not
furnished with arrester.

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

In addition to the information that is included on
the tripod base, a nameplate is attached to the
casting to provide all of the required arrester
details. The catalog number, the rated voltage,
the maximum continuous operating voltage, and
the pressure relief current rating are shown. The
serial number includes information about the time
of manufacture.

AR-23

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZSP Station Class Arrester Ordering Information
S

P

X

X

X

X

-

X

X

X

1

{

Z

kV Rating
0003

=

3

0006

=

6

0009

=

9

0010

=

10

0012

=

12

0015

=

15

0018

=

18

0021

=

21

0024

=

24

0027

=

27

0030

=

30

0033

=

33

0036

=

36

0039

=

39

0042

=

42

0045

=

45

0048

=

48

0054

=

54

0060

=

60

0063

=

63

0066

=

66

0072

=

72

0090

=

90

0096

=

96

0108

=

108

0120

=

120

0134

=

132

0144

=

144

0168

=

168

0172

=

172

0180

=

180

0192

=

192

0198

=

198

0210

=

210

0216

=

216

Top & Bottom Connectors

Configuration

1 - Eyebolt with a
90° angle bracket

1 - Stainless steel
top cover with
tripod base

Conductor Range:
0.25” - 0.75”
(6.35 - 19.05 mm)

2 - Four hole NEMA
pad with a 90°
angle

2 - Tripod on top
with stainless
steel bottom
cover (Inverted
Mounting)

Conductor Range:
0.25” - 1.25”
(6.35 - 31.75 mm)

3 - Four hole NEMA
pad with a 45°
angle

3 - Stainless steel
covers on both
ends

Conductor Range:
0.25” - 1.25”
(6.35 - 31.75 mm)

4 - Tripod on both
ends

Example
108kV rated arrester with:
Small top cover & tripod base
Top - eyebolt with a 90° angle
bracket
Bottom - Four hole NEMA
pad with a 45° angle

Special Needs

For special arrester characteristics other than
those shown in this catalog, contact your MPS
representative

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

Catalog Number - ZSP0108-1131

AR-24

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Station and Intermediate Class Arresters Accessories
Discharge Counter
Catalog No. 7120B0004H0001

The optional discharge counter records the number
of current discharges through the ground lead of
the arrester. A five-digit cyclometer records each
current discharge. The counter registers impulse
discharges of an amplitude of 200 amperes or
more. No external power source is required. The
discharge counter must be used in conjunction
with insulating sub-bases.
A milliammeter comes with the discharge counter
to provide continuous reading of the total current
through the metal oxide valve elements and the
leakage current across the external polymer
insulation. A 0-30 milliampere scale is used.
Heavy external contaminants on the polymer
housing will increase the level of current registered
and may serve as an indication the polymer
housing needs washing. Steadily increasing
readings with a clean housing may be an indication
of potential problems with the arrester metal oxide
valve elements.

Mounting Brackets
Hot Dip Galvanized

Single Crossarm Mounting Bracket
Catalog No. 7106C0001
Maximum Arrester Sizes:
ZIP-96kV; ZSP-108kV
Includes 2 backstraps, 1/2” bolt size hardware and pipe spacers for
inverted mounting.

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-25

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Station Class Arresters Accessories

Pole Mounting Bracket
One Arrester, Horizontal Mounting
Catalog No. 7102C0003
Maximum Arrester Sizes:
ZIP-60kV; ZSP-72kV
No hardware included.

Pole Mounting Bracket
Three Arrester, Horizontal Mounting
Catalog No. 7102D0002
Maximum Arrester Sizes:
ZIP-60kV; ZSP-72kV
No hardware included.

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-26

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Transmission Line Arrester and Assemblies
Type “ZQPT”/“ZXLA”
Available for System Voltages Up to 161kV

Application

Users of electricity have become more and more demanding over
recent years. The quality of the power they receive is critical to
their operations. Sensitive electronic equipment cannot tolerate
voltage fluctuations and many problems are directed to the utility.
The heightened awareness of power quality has brought the
issue to all levels of operations, including transmission.

“ZQPT”/“ZXLA” transmission line arresters and assemblies are
applied to:
• Improve power quality and overall line performance
• Supplement shield wire protection
• Provide protection for lines without a shield wire
• Create more space on structures by eliminating the shield
wires
• Protect both new construction and retrofit
The factors that impact transmission line lightning performance
include the following: The amount of lightning activity in a given
area per year, the stroke magnitude and the wave shape of the
lightning, the tower height and the amount of nearby natural
shielding from trees or buildings, the tower footing resistance,
the presence of an overhead shield wire and the shield angle,
and the existing line insulation.
When selecting transmission line arresters for specific application,
there are several things to keep in mind. The application is usually
different for a line with an overhead shield wire than without.
The arrester rating should be coordinated with the arresters in
the substation. The transmission line arresters should be the
same rating or larger so that they do not end up protecting the
substation arresters.
The transmission line arresters should be sized by evaluating the
line voltage and the line insulation. By using a high MCOV arrester
the temporary overvoltage (TOV) capability will be increased
and the energy capability will also be greater. With the added
lightning exposure that may be expected on a transmission line,
it is helpful to have higher capabilities in these categories. Also,
higher rated arresters will not experience as much duty because
the reference voltage is higher and will not turn on as soon as
lower rated units.

Benefits

In the area of transmission line power quality, MPS offers the
“ZQPT”/“ZXLA” transmission line arrester and arrester insulator
assembly. The lightweight construction makes it possible to easily
mount arresters on transmission line structures. The arresters
provide a preferred path between line and ground, guarding
against insulator flashover.
Transmission line surge protection is a solution to troublesome
outages and customer dissatisfaction. State-of-the-art protection
of transmission lines using polymer MOV arresters provides
higher power quality which will improve customer satisfaction.
“ZQPT”/“ZXLA” transmission line arresters and assemblies are
available for system voltages up to 161kV. The metal oxide
blocks are specially selected and wrapped under compression
with a strong fiberglass wrap.

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

Lightning is one of the major causes of power interruption.
Currently, shield wires serve as lightning protection for
transmission lines.
“ZQPT”/“ZXLA” transmission line arresters and assemblies
provide these advantages over the use of shield wire alone:
• Minimize the requirement to lower ground resistance
• Protect against backflash
• Safeguard from induced surges caused by nearby lightning
• Limit effects of switching surges
• Install easily and economically
• Allow for reduction of structure BIL
• Reduce system breaker operations
• Provide protection for isolated problem areas
• Improve overall line performance
• Enhance customer relations

AR-27

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZQPT Transmission Line Arresters
Physical Characteristics
Catalog
Number

kV
Rating

Width A
In

Length B

Mm

Nominal Strike

Nominal Creepage

Mm

In

Mm

In

Mm

Lb

Kg

19.6

498

20.1

511

55

1397

12

5.5

23.4

595

24.0

610

65

1651

14

6.4

27.2

691

27.9

709

76

1931

16

7.3

114

2896

24

10.9

8155CS036T****

36

8155CS039T****

39

8155CS045T****

45

8155CS054T****

54

8155CS060T****

60

8155CS072T****

72

40.7

1034

41.9

1065

8155CS090T****

90

41.5

1055

41.2

1047

8155CS096T****

96

47.5

1207

47.3

1202

131

8155CS108T****

108

51.2

1301

51.2

1301

8155CS120T****

120

55.0

1397

58.1

1476

4.2

107

4.5

115

Weight

In

26

11.8

3328

29

13.2

141

3582

31

14.1

152

3861

33

15.0

Notes:
* The astericks identify the mounting hardware

Electrical Characteristics

MCOV
(kV-rms)

Max Equiv
FOW1
(kV-Crest)

Max
Switch
Surge2
(kV-Crest)

1.5 kA

3.0 kA

5.0 kA

10 kA

20 kA

40 kA

36

29.0

130.2

84.9

95.1

98.5

104.1

115.5

131.3

155.1

8155CS039T****

39

31.5

134.7

87.8

98.4

101.9

107.8

119.5

135.9

160.5

8155CS045T****

45

36.5

156.8

102.2

114.5

118.6

125.4

139

158.1

186.8

8155CS054T****

54

42

195.8

127.7

143

148.1

156.7

173.7

197.5

233.3

8155CS060T****

60

48

217.3

141.7

158.7

164.4

173.9

192.8

219.2

258.9

8155CS072T****

72

57

261.5

170.5

191

197.8

209.2

231.9

263.7

311.5

8155CS090T****

90

70

326

212.6

238.1

246.6

260.8

289.1

328.8

388.3

8155CS096T****

96

76

347.5

226.6

253.8

262.9

278

308.2

350.5

414

8155CS108T****

108

88

391.1

255

285.6

295.9

312.9

346.9

394.5

465

8155CS120T****

120

98

434.6

283.5

317.5

328.8

347.7

385.5

438.4

517

Voltage
Rating
(kV-rms)

8155CS036T****

Catalog
Number

Maximum Discharge Voltage (kV-Crest)
Using an 8/20 ms Current Impulse

Notes:
1) The equivalent Front-of-Wave is the maximum discharge voltage for a 10kA impulse current wave which produces a voltage wave cresting in a 0.5 ms
2) Based on a switching surge current of 500 amperes for arresters rated 3kV to 90kV and 1000 amperes for arresters from 108kV to 144kV

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-28

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

ZXLA Transmission Line Arrester and Insulator Assembly
Horizontal Transmission Assembly
Line
Voltage

ZXLA Catalog No.

kV
46

69

69

69

Arrester Duty
Voltage Rating

MCOV

Arrester Catalog No.

kV

Insulator
Section Length

Assembly
Leakage

Assembly
Weight

in (mm)

in (mm)

lbs (kg)

NPKG20XG13S0
OLPK-13-SIL-GB-12

25.2
(640)

42.3
(1074)

38.0
(17.2)

NPKG20XG17S0
OLPK-17-SIL-GB-12

29.2
(742)

54.0
(1372)

45.0
(20.4)

NPKG20XGM21S0
MLPK-21-SIL-GB-12

29.2
(742)

59.4
(1509)

46.0
(20.9)

NPKG20XGM25S0
MLPK-25-SIL-GB-12

31.2
(792)

71.1
(1806)

48.0
(21.8)

Insulator Catalog No.

kV

ZH4PKG13-036

36

8155CS036T****

29.0

ZH4PKG13-039

39

8155CS039T****

31.5

ZH4PKG17-054

54

8155CS054T****

42.0

ZH4PKG17-060

60

8155CS060T****

48.0

ZH4PKG21-054

54

8155CS054T****

42.0

ZH4PKG21-060

60

8155CS060T****

48.0

ZH4PKG25-060

60

8155CS060T****

48.0

* Consult factory for system voltages greater than 69kV

Vertical Transmission Assembly
Line
Voltage

ZXLA Catalog No.

kV
46

69

69

69

Arrester Duty
Voltage Rating

Insulator
Section Length

Assembly
Leakage

Assembly
Weight

in (mm)

in (mm)

lbs (kg)

NPKV20XG13S0
OLPK-13-SIL-VB-12

23.4
(594)

42.3
(1074)

38.0
(17.2)

NPKV20XG17S0
OLPK-17-SIL-VB-12

27.4
(696)

54.0
(1372)

45.0
(20.4)

NPKV20XGM21S0
MLPK-21-SIL-VB-12

27.4
(696)

59.4
(1509)

46.0
(20.9)

NPKV20XGM25S0
MLPK-25-SIL-VB-12

31.4
(798)

71.1
(1806)

48.0
(21.8)

Insulator Catalog No.

Insulator
Section Length

Assembly
Leakage

Total Weight
(Est)

kV

in (mm)

in (mm)

lbs (kg)

S148035MX01

35.4
[899]

60.8
[1544]

27.3
[12.4]

S148035MX01

35.4
[899]

60.8
[1544]

39.3
[17.8]

S148054MX01

54.3
[1379]

109.2
[2774]

45.6
[20.7]

S148065MX01

65.3
[1659]

137.4
[3490]

57.1
[25.9]

MCOV

Arrester Catalog No.

kV

Insulator Catalog No.

kV

ZV4PKG13-036

36

8155CS036T****

29.0

ZV4PKG13-039

39

8155CS039T****

31.5

ZV4PKG17-054

54

8155CS054T****

42.0

ZV4PKG17-060

60

8155CS060T****

48.0

ZV4PKG21-054

54

8155CS054T****

42.0

ZV4PKG21-060

60

8155CS060T****

48.0

ZV4PKG25-060

60

8155CS060T****

48.0

* Consult factory for system voltages greater than 69kV

Deadend Transmission Assembly
Line
Voltage

ZXLA Catalog No.

kV
46

69

115

138

Arrester Duty
Voltage Rating

Arrester Catalog No.

kV

MCOV

ZD148035MX01-039

39

8155CS039T****

31.5

ZD148035MX01-054

54

8155CS054T****

42.0

ZD148035MX01-060

60

8155CS060T****

48.0

ZD148035MX01-072

72

8155CS072T****

57.0

ZD148035MX01-090

90

8155CS090T****

70.0

ZD148035MX01-108

108

8155CS0108T****

48.0

ZD148035MX01-132

132

8155CS0132T****

106.0

* Consult factory for system voltages greater than 138 kV

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-29

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Transmission Line Protection Configurations

Suspension Configuration

Deadend Configuration

Horizontal Configuration
© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

Vertical Configuration

AR-30

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Surge Tec® Secondary Arresters
Features
Surge Tec® arresters incorporate special features that make them
stand above other Secondary Arresters and Transient Voltage
Surge Suppressors (TVSS). These arresters use a patented
(#5,502,612) fault withstand design along with replacement
indication. The arresters are available in 175 volt, 480 volt and 650
volt AC ratings for application on system voltages below 650 volts
phase to ground and operate at frequencies between 48 and 62 Hz.
The units come with 18 inch, #14 AWG solid copper wire leads and
are designed to be mounted outdoors or indoors.

Electricity users, from the homeowner to big business, are
more interested today in the quality of the power they receive
than in the past, and with good reason. Advances in technology
have introduced new electronic equipment and appliances that
are more susceptible to damage by power surges. Replacing
or repairing damaged equipment is inconvenient and can be
costly.
Lightning or an interruption in the power line can generate a
power surge. These high energy surges can enter a home
or building through the electric service entrance. Once the
surge enters the building, there is a possibility that high voltages
resulting from the surge current will damage electrical wiring
or equipment. Surge Tec® arresters are designed to limit surge
voltages by discharging (bypassing) surge current to ground.
Individuals should assess their risk by evaluating the potential
impact that a power surge may have on their property. In many
cases, the cost of protection is relatively inexpensive compared
to the possible loss. The Surge Tec® arrester is designed to
provide brute force protection against surges at the service
entrance, where protection is needed the most. The family of
Surge Tec® arresters provides an excellent first line of defense
for any critical electrical service, whether it is in a home, business
or industrial applications.

Surge Arrester Application

• METAL OXIDE VARISTORS—Surge Tec® arresters use metal
oxide varistors (MOV). This takes advantage of our experience
with metal oxide production for the utility industry. The arresters
meet ANSI/IEEE C62.11-1993 for secondary arresters. In
addition, they have passed a 5kA Duty Cycle test. They
provide high speed response and excellent energy capability
for today’s critical electric loads.
• REPLACEMENT INDICATION—A visual indication on the front
label permits routine checks of the arrester’s operational
status. Indication windows on the label turn black if the arrester
has faulted. The arrester should be replaced when any area of
any window turns black.
• FAULT WITHSTAND CAPABILITY—The Surge Tec® secondary
arresters have a patented fault withstand design. This unique
design has been tested at high current failure modes to verify
its ability to withstand a failure without a violent fracture of the
housing. Fault current is the full available system current that the
device conducts in the event it is short circuited by conducting
a surge beyond the designed capability. This provides significant advantages in the area of secondary voltage protection.
There currently is not a standard requirement or test specification
for fault withstand capability of secondary arresters. The Surge
Tec® arresters were tested by failing them with an overvoltage
and then applying fault currents of 4kA and 10kA. The arresters
achieved the fault withstand capability of 10kA rms without the
use of, or the requirement for, any external fusing.
• COST EFFECTIVE—The Surge Tec® arresters are very
inexpensive compared to potential equipment damage.

MPS’ Surge Tec® arresters are designed for service entrance
installations. The arresters are designed for repeated operation
and continuous protection.
Surge arresters provide the path of least resistance to ground for
surges on a system. THE ARRESTERS SHOULD BE INSTALLED
BY A LICENSED ELECTRICIAN. To provide the best protection,
the lead wires should be kept as short as possible. When installed
properly, they will divert lightning surges to ground very quickly.
Surge Tec® arresters offer the first line of defense for the entire
electrical service and protect wiring, major appliances, pumps,
and heating/air conditioning equipment. For added protection to
computers, MPS recommends plug-in-strip type of device with
lower clamping voltages as a second line of defense. This type
of coordination provides excellent surge protection for the entire
electric service.
© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-31

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Surge Tec® Physical and Electrical Characteristics

Meterbase Mounting
with insulating piercing connector

Knockout Mounting
Z2-175-0

Transformer Mounting
Z2-480-4C
Z2-650-4C
(for 3/8” hardware)

2.48”

3.11”

2.33”

2.46”

.875”

.875”

Fig. 2

Fig. 1

1.125”

1.125”

Physical and Electrical Characteristics
Catalog
No.

Voltage
Rating
MCOV

Z1-175-0
Z2-175-0

175

Z3-175-0

Poles

Weight
Oz (Gram)

1

14 (435)

2

15 (466)

3

18 (560)

Figure
1

Energy
Capability
(Joules/
Phase)

Response
Time (nsec)

Front-of-Wave
Protection
Level
(kV-Crest)

427

<5

742

919

Max. Discharge Voltage
Clamping Using an 8/20 msec
Current Wave (units-kV)
1.5kA

5.0kA

10kA

1.21

0.75

0.95

1.27

<5

1.90

1.42

1.76

2.16

<5

2.48

2.01

2.44

2.55

2

*Add an “A” suffix to obtain the mounting bracket (e.g. Z1-175-0A)
Z1-480-0
Z2-480-0

480

Z3-480-0

1

15 (466)

2

19 (590)

3

20 (622)

1
2

*Add an “A” suffix to obtain the mounting bracket (e.g. Z1-480-0A)

Z1-650-0
Z2-650-0
Z3-650-0

650

1

19 (590)

2

20 (622)

3

21 (653)

1
2

*Add an “A” suffix to obtain the mounting bracket (e.g. Z1-650-0A)

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-32

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Surge Tec® Typical Wiring Connections
Maximum Phase-Phase/Phase-Ground Voltages
Figure No.

Z1-175

3

175/NA

Z2-175

Z3-175

Z1-480

Z2-480

Z3-480

480/NA

Z1-650

Z2-650

4

350/NA

960/NA

1300/NA

5

350/175

960/480

1300/650

6

303/175

7
8

831/480

175

480

9

175/101

10

Z3-650

650/NA

1125/650
650

480/277

650/375

For severe duty applications, select arrester with next highest voltage rating.

Figure 3

Figure 4

Figure 5

Figure 6

Figure 8

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

Figure 7

Figure 9

AR-33

Figure 10

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Surge Tec® Catalog Numbering System

Z

2

-

Number of
Poles

1 - One pole
2 - Two poles
3 - Three poles

175

-

Max. Voltage per
Pole (MCOV)

175 - 175 volt
480 - 480 volt
650 - 650 volt

2.625"

0

Lead Wire
Length (in/mm)

0 - 18”/457
1 - 24”/610
2 - 36”/914

A

Mounting
Bracket/Hardware
Options

A - Aluminum ‘A’ Bracket
C - Aluminum ‘C’ Bracket
1” Ring Terminals Ground 3/8” Ring
Terminals - Line
Connections

1.75"

1.53"

‘A’ Bracket
Part No. 8340903

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

Option ‘C’

AR-34

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com

Index
Catalog Number Description

Page

7102C0003

Pole Mounting Bracket; One Arrester,
Horizontal Mounting

AR-26

7102D0002

Pole Mounting Bracket; Three Arrester,
Horizontal Mounting

AR-26

7106C0001

Single Crossarm Mounting Bracket

AR-25

712B0004H0001

Discharge Counter

AR-25

Z1-175

Surge Tec®

AR-31 - 34

Z1-480

Surge Tec®

AR-31 - 34

Z1-650

Surge Tec®

AR-31 - 34

Z2-175

Surge Tec®

AR-31 - 34

Z2-480

Surge Tec®

AR-31 - 34

Z2-650

Surge Tec®

AR-31 - 34

Z3-175

Surge Tec®

AR-31 - 34

Z3-480

Surge Tec®

AR-31 - 34

Z3-650

Surge Tec®

AR-31 - 34

ZE Series

ZE Elbow Distribution Arresters

AR-12 - 13

ZHP Series

Zforce ZHP™ (10kA Heavy Duty Polymer) AR-8

ZIP Series

ZIP Intermediate Class Surge Arresters

AR-14 - 19

ZJP Series

ZJP Intermediate Class Surge Arresters

AR-14 - 19

ZNP Series

Zforce™ ZNP (5kA Normal Duty Polymer)

AR-8

ZQPT Series

ZQPT Transmission Line Arresters

AR-27 - 28

ZRP Series

ZRP™ (10kA Riser Pole Polymer)

AR-9

ZSP Series

Station Class Arresters

AR-20 - 24

ZXLA Series

ZXLA Transmission Line Arrester and
Insulator Assembly

AR-27 - 29

© Copyright 2010 MacLean Power Systems
Issued: May 2010
Supercedes: n/a

AR-35

11411 Addison Avenue, Franklin Park, IL 60131
T: 847.455.0014 F: 847.455.0029
www.macleanpower.com



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