Abstract
A new distribution-class surge arrester design concept is introduced. Replacing the conventional gasket-sealed porcelain housing is an epoxy/fiberglass-wrapped metal-oxide varistor disc module, assembled inside a flexible EPM rubber housing. This PDV (polymer distribution varistor) arrester design has the advantage of minimizing the free-gas volume inside the arrester, virtually eliminating concerns of moisture ingress due to seal pumping. In the unlikely event of arrester failure, the rubber-enclosed housing eliminates exploding porcelain fragments normally associated with standard distribution-class arrester designs. Performance questions related to assembling distribution arresters inside housings molded from polymer material are addressed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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