Enclosures & Accessories / Technical supply

Surge Arrester

Metal-oxide surge arresters protecting line and substation plant from overvoltage.

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Product overview

Built around the project specification

A surge arrester holds off system voltage in normal operation and conducts to earth when a lightning or switching surge arrives, clamping the overvoltage that would otherwise reach the transformer or switchgear insulation. It is the cheapest component in a substation that decides whether the most expensive one survives a storm.

Key features

Metal-oxide varistor design
Polymeric housing
Selected by system voltage and energy class
Line and substation duty ratings

Applications

Transformer and substation protection
Overhead line protection
Cable termination points
Distribution pole-top installations

Specifications

Type: Metal-oxide surge arrester
Housing: Polymeric

Technical documents

Documentation for procurement and review

Available catalogues, datasheets, manuals, and group certificates are kept in the document library. Final ratings are confirmed against the project specification.

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