go to the Surge arresters product page jerry singh asked on May 12th, 2015 in Surge arresters

What material is used to make surge arresters?

Christer Lannhard, Global Product Marketing Manager Surge Arresters

ABB's answer

A gapless metal-oxide surge arrester comprises of the following main components:

  • MO resistors (blocks)
  • Housing of porcelain or polymeric material with end fittings of metal (e.g. flanges)
  • A grading ring arrangement where necessary
  • And other internal parts

The internal parts can differ considerably between a porcelain-housed arrester and a polymer-housed arrester.  The only certain commonality between these two designs is that both include a stack of MO resistors connected in a series, together with the components to keep the stack together.  The MO resistors themselves consist of approximately 90% zinc oxide and 10% of other rare earth oxides which, during the manufacturing process, are formed into a dense ceramic body with varistor properties.

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  • Christer Lannhard

    Christer Lannhard

    Global Product Marketing Manager Surge Arresters

    High Voltage Products

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