Gas-filled discharge tube, more particularly a surge arrester

Details Gas-filled discharge tube, more particularly a surge arrester Gas-filled discharge tube, more particularly a surge arrester

H - Electricity

01

T

317/25

H01T 1/20 (2006.01)

Patent

CA 1126329

ABSTRACT The invention relates to a gas-filled discharge tube, more partic- ularly a surge arrester, having a gas-filled housing in which main electrodes, facing each other, are hermetically sealed in the ends of a tubular insulat- ing element, on the inside of which at least one ignition strip extends over a part of the length of the tube. In this gas-filled discharge tube, the dif- ference between the surge response voltage and the d.c. response voltage is to be substantially reduced. To this end, according to the invention, at least one electrically-conductive layer, strap, or electrode is applied to the outside of the insulating element, which layer at least partly over- laps the ignition strip or a subsequently produced conductive coating on the inner wall. A gas-filled discharge tube according to the invention is used, in particular, as a surge arrester having a low surge response surge voltage.

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