High voltage disconnect switch

Details High voltage disconnect switch High voltage disconnect switch

H - Electricity

01

H

H01H 33/66 (2006.01) H01H 33/12 (2006.01) H01H 71/00 (2006.01) H02H 3/00 (2006.01)

Patent

CA 2353190

A group operated circuit disconnect apparatus for overhead electrical power lines includes an operator controlling a plurality of disconnect switches. Each disconnect switch includes a vacuum circuit interrupter mounted inside an insulating bushing. Current is transferred from a terminal pad through the vacuum circuit interrupter to a vacuum terminal pad by attaching a silver-plated contact nut to a movable contact end of the vacuum circuit interrupter and using a rocker type contact assembly to connect the contact nut to the vacuum terminal pad. A rotating insulator of the disconnect switch drives a make/break mechanism that opens and closes the contacts inside the vacuum circuit interrupter. The rotating insulator turns a frame assembly so that an appropriate point in operation a trip point is reached and springs quickly rotate an actuator assembly driving the movable vacuum contacts at a high speed to the open or close position. The contact speed is approximately 7-10 milliseconds, which provides efficient circuit interruption or closure.

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