The Manufacturer / Country of Origin

  NGK/ Japan

Standard

  IEC60099-8

Type of installation

  Transmission line   

Type of surge arrester

  ZnO, External gap type, Polymer housing

Type of mounting

  Horn holder

Indoor or Outdoor

  Outdoor

Rated Voltage

kVrms

  192 kV

Nominal discharge current (2/20µs)

kA

  10kA(2/20µs)

Maximum discharge current (2/20µs)

kA

  25kA(2/20µs)

Residual voltage

+ at 10kA (2/20µs)

+ at 25kA (2/20µs)

kVp

kVp

  ≤ 525kV

  ≤ 600kV

Short circuit current

+ High current

+ Low current

kArms

Arms

  ≥ 50 (+/- 10%), 0.2s

  ≥ 400A, 2s

Mass of surge arrester unit (with mounting parts)

kg

  Approx. 5.2 kg X 2 units

Material of arrester housing

  Silicone Rubber

Type of arrester housing

 Directly molded type

Length of external gap

mm

 1000 (+10 / -0)

Pollution level

cm/kV

  Follow current interruption within ½  

  cycle at 192kV, ESDD0.30 mg/cm²

Interruption capability for follow current

Creepage distance

mm

  3400mm

Accessories: mounting parts

  Yes

Manufacturer’s drawings/catalogue with detailed dimensions and technical data

  Yes

Lightning discharge capability

  0.2C