Surge arresters type PROXAR-IIW AC in silicone housing

Application

Surge arresters type PROXAR-IIW AC in silicone housing are intended for protection AC power engineering networks against multiple lightning and switching overvoltages in MV switchgear, vacuum circuit breakers, MV cables and HV cable sheaths, motors, transformers and capacitors banks. This surge arrester is destined to all special technical requirements as well.

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Working conditions

The arresters are suitable for indoor operation in temperate and tropical climates at altitudes up to 1000 m above sea level. The overall dimensions also allow installation in medium-voltage switchgear in the minimum inter-pole pitch. MV motor connection boxes. Cross-bonding boxes – protection of return conductors of HV cables.

Advantages

  • Low residual voltage
  • High energy input capacity – high energy absorption capacity
  • Stable U-I characteristics even after multiple strokes
  • Housing resistant to rough handling
  • High resistance to damage under atmospheric conditions
  • High short circuit capability
  • High durability and operating reliability under various environmental conditions
  • Ability to install in any position (vertically or horizontally)
  • Easy mounting and maintenance free
  • Small dimensions and weight

Electrical data

Parameter
Value
Arrester classification according to EN 60099-4:2014
Station Low
Line discharge class according to IEC 60099-4:2009
Class 2
System voltage (Us)
1 – 52 kV
Rated voltage (Ur)
1.3 – 51 kV
Nominal discharge current In 8/20 μs
10 kA
High current impulse Ihc 4/10 μs
100 kA
Rated repetitive charge transfer rating Qrs
1.6 C
Rated thermal Energy Wth
7.0 kJ/kV Ur
Single impulse energy capability (impulse duration 2 ms – 4 ms)
3,5 kJ/kV Ur
Long duration current impulse withstand 2 ms (based on Qrs)
600 A
Short circuit rating
31,5 kA/0.2s
Service conditions:
Value
ambient temperature
-45 °C to +60 °C
altitude up to
up to 1000 m
frequency
48 – 62 Hz
If you require other parameters, please contact us

If you require other parameters, please contact us

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Mechanical data

Parameter
Value
Specified long-term load (SLL)
350 Nm
Specified short-term load (SSL)
560 Nm
Torsional strength
100 Nm
Vertical load
1000 N

Technical drawings

Please contact us for drawings of specific executions

Please contact us for drawings of specific executions

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Downloads

Data sheet Download PDF

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Certificate of conformity Download PDF

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Installation and operating instruction

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See available accessories

Equipment of any size and purpose can be supplied on request.

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"PROXAR IIW AC"

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