Surge arrester

Details Surge arrester Surge arrester

H - Electricity

01

C

317/24

H01C 7/12 (2006.01) H01C 8/04 (2006.01)

Patent

CA 1157081

KN 5798 ABSTRACT OF THE DISCLOSURE In a surge arrester comprising a stack of series-connected cylindrical ZnO-varistors in an insulating housing, the envelope surface of each varis- tor is provided with an insulating protection means, which overlap varistors positioned adjacent to each other. The protection means prevent the varistors from being mechanically damaged during handling, provides guiding for the varistors in the stack, and seals the stack of varistors, so that a local glow discharge or a fault in individual varis- tors will not lead to an arc flash-over along the stack. -1-

376826

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