Current-limiting surge arrester disconnector

Details Current-limiting surge arrester disconnector Current-limiting surge arrester disconnector

H - Electricity

02

H

317/14, 348/14

H02H 1/04 (2006.01) H02H 7/24 (2006.01) H01H 9/10 (2006.01) H01H 39/00 (2006.01)

Patent

CA 1254647

Abstract A protective device for use with a surge arrester to prevent fracturing of the porcelain body of a failed arrester includes a fast-operating switch which shunts a current-limiting fuse. The switch is operated by ignition of a chemical propellant charge, thereby rapidly diverting fault current to the fuse and additionally isolating the arrester from ground. The switch has a moving contact in the form of a gas-driven piston which strikes a separable terminal connected to a ground lead.

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