Surge protection assembly for insulating flanges

Details Surge protection assembly for insulating flanges Surge protection assembly for insulating flanges

H - Electricity

01

C

317/24

H01C 7/12 (2006.01) H01C 8/04 (2006.01) H01T 4/08 (2006.01) H02B 13/065 (2006.01)

Patent

CA 2018382

ABSTRACT OF THE DISCLOSURE A protective device for an insulating flange of a high voltage transmission system comprises a varistor unit in combination with a spark gap. The varistor unit is clamped between a pair of radially extending stub plates connecting the unit in shunt with the insulating flange. The spark gap is defined by a pair of spark electrodes mounted on the stub plates radially outwardly of the varistor unit so that the latter shields the insulating flange from molten metal and heat generated at the spark gap should the varistor unit fail.

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