ZJP Intermediate Class Polymer Arresters

The type "ZJP" intermediate class arresters offer the benefits of polymer housings for system voltages up to 46kV.

The arresters are approxiately 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.

Features:

  • The design consists of a number of metal oxide valve elements contained within a fiberglass winding and then inserted into the polymer housing.
  • ZJP arresters are shippped as single units for all ratings.
  • The metal oxide valve elements combine excellent protective characteristics with steady state performance to maximize protection over many years of service.

Description

Performance:

  • ZJP: 3 through 45kV duty cycle rating, 2.55kV through 36kV MCOV for 2.4 through 46kV system line-line voltage.
  • High Current-Short Duration: 100kA crest
  • Transmission Line Discharge: Exceeds ANSI/IEEE and IEC class 2 standard requirements
  • Nominal discharge current per IEC: 10kA
  • Minumum energy Capability: 5.0kJ/kV MCOV
  • Fault Withstand Capability: 20kA rms sym
  • Working cantilever strength: 720 in. -lbs.
  • 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 offailure.

Design:

  • The arrester designs are tested in accordance with the latest industry standards for metal oxide arresters.
  • The "ZJP" arresters consistently withstand the following minumum design tests.
  • 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 failure.
  • Three Phase Installation Layout:The holes for mounting are .56 inches (14.2 mm) for 1/2" bolts.

Nameplates:

  • In addition to the information that is included on the tripod base, a namelate 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.

NOTE: Mounting bolts and washers are not furnished with the arrester.

Links & PDFs

ZJP Electrical Characteristics Dim Drawing Image

ZJP Electrical Characteristics

Catalog Number Voltage Rating (Ur) (kV rms) MCOV (Uc) (kVrms) TOV (1 s kV rms) TOV (10 s kV rms) Equivalent F.O.W. kV (Crest) Switching Surge kV (crest) Discharge Voltage (1.5kA) Discharge Voltage (3kA) Discharge Voltage (5kA) Discharge Voltage (10kA) Discharge Voltage (20kA) Discharge Voltage (40kA)
ZJP0042– 42 34 49.4 47.0 117 86.7 92.7 97.9 102 111 122 138
ZJP0045– 45 36.5 53.0 50.4 125 92.9 99.4 105 110 119 131 148
ZJP0036– 36 29 42.1 40 98.9 73.4 78.5 82.9 86.7 93.5 104 117
ZJP0039– 39 31.5 45.7 43.5 109 80.5 86.1 90.9 95.1 103 114 128
ZJP0030– 30 24.4 35.4 33.7 83.5 61.9 66.2 70.0 73.2 79.0 87.4 98.4
ZJP0033– 33 26.7 38.8 36.9 91.9 67.2 72.9 77.0 80.6 86.9 96.3 108
ZJP0024– 24 19.5 28.3 26.9 68.5 50.8 54.3 57.4 60.0 64.8 71.7 80.7
ZJP0027– 27 22 31.9 30.4 77.3 57.4 61.4 64.8 67.8 73.2 81.0 91.2
ZJP0018– 18 15.3 22.2 21.1 51.3 38.1 40.8 43.0 45.0 48.6 53.8 60.6
ZJP0021– 21 17 24.7 23.5 56.6 42.0 44.9 47.5 49.6 53.6 59.3 66.8
ZJP0012– 12 10.2 14.8 14.1 34.2 25.4 27.2 28.7 30.0 32.4 35.8 40.4
ZJP0015– 15 12.7 18.4 17.5 43.1 32.0 34.2 36.1 37.8 40.8 45.1 50.8
ZJP0009– 9 7.65 11.1 10.6 25.9 19.2 20.5 21.7 22.7 24.5 27.1 30.5
ZJP0010– 10 8.4 12.2 11.6 28.3 21.0 22.5 23.7 24.8 26.8 29.6 33.4
ZJP0003– 3 2.55 3.7 3.5 8.55 6.34 6.79 7.17 7.50 8.09 8.96 10.1
ZJP0006– 6 5.10 7.41 7.04 17.1 12.7 13.6 14.3 15.0 16.2 17.9 20.2

English Metric

ZJP Physical Characteristics and Clearances

Catalog Number Creepage (in) Weight Lbs (kg) A (in) B (in) Strike (in)
ZJP0042-D005 51.4 15.5 4.6 23.54 19.2
ZJP0045-D005 54.5 16.4 4.6 25.64 21.3
ZJP0036-D005 44.2 13.7 4.6 21.14 16.8
ZJP0039-D005 48.6 14.6 4.6 22.64 18.3
ZJP0030-D005 38.1 11.8 4.6 18.88 14.6
ZJP0033-D005 40.3 12.8 4.6 20.18 15.9
ZJP0024-D005 30.7 11.1 4.6 16.42 12.1
ZJP0027-D005 33.7 11.8 4.6 17.41 13.1
ZJP0018-D005 22.0 8.5 4.6 13.52 9.22
ZJP0021-D005 26.4 9.0 4.6 15.00 10.7
ZJP0012-D005 15.8 7.8 4.6 11.15 6.85
ZJP0015-D005 20.2 8.2 4.6 12.61 8.31
ZJP0009-D005 15.7 5.6 4.6 11.12 6.82
ZJP0010-D005 15.8 5.7 4.6 11.17 6.87
ZJP0003-D005 15.7 4.8 4.6 11.10 6.8
ZJP0006-D005 15.7 5.2 4.6 11.10 6.80

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 µsec.
3)  Based on a switching surge current of 500 amperes

ZJP Electrical Characterstics Dim Drawing Image

English Metric

ZJP Electrical Characterstics

Catalog Number A (in) Creepage (in) Height (in) R (in) Weight Lbs (kg)
ZJP0042- 14.5 51.4 19.2 12.8 18.4
ZJP0045- 15.5 54.5 21.3 13.8 19.3
ZJP0039- 13.5 48.6 18.3 11.8 17.5
ZJP0033- 10.5 40.3 15.9 8.8 15.7
ZJP0036- 12.5 44.2 16.8 10.8 16.6
ZJP0027- 10.5 33.7 13.1 8.8 14.7
ZJP0030- 10.5 38.1 14.6 8.8 14.7
ZJP0024- 9.5 30.7 12.1 7.8 14
ZJP0018- 9.5 22 9.22 5.8 11.4
ZJP0021- 9.5 26.4 10.7 6.8 11.9
ZJP0012- 9.5 15.8 6.85 5.5 10.7
ZJP0015- 9.5 20.2 8.31 5.5 11
ZJP0010- 9.5 15.8 6.87 5.5 8.6
ZJP0006- 9.5 15.7 6.8 5.5 8.1
ZJP0009- 9.5 15.7 6.82 5.5 8.4
ZJP0003- 9.5 15.7 6.8 5.5 7.7

 

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