High voltage gas blast circuit interrupter

Details High voltage gas blast circuit interrupter High voltage gas blast circuit interrupter

H - Electricity

01

H

306/233

H01H 33/80 (2006.01) H01H 33/12 (2006.01) H01H 33/70 (2006.01) H01H 33/82 (2006.01)

Patent

CA 1042493

ABSTRACT A high-voltage circuit-interrupter has a contact arrangement opera- ting in compressed gas contained in a sealed vessel. The contact arrangement comprises a pair of spaced aligned tubular fixed contacts respectively con- nected to the terminals of the interrupter, and a pair of separable rooting electrodes mounted within the tubular fixed contacts and electrically connect- ed respectively to them. A tubular bridging contact sleeve is slidably mount- ed on the tubular bridging contacts and is movable between a closed position bridging the spaced ends of the turbular contacts and an open position with- drawn from one of them to open a gap therebetween. The circuit-interrupter operating mechanism is arranged, for opening the interrupter, to withdraw the bridging contact sleeve from one of the fixed contacts and to initiate a gas blast through the gap so opened into the interiors of the fixed contacts and simultaneously or subsequently to withdraw one of the rooting electrodes from the other, so that the arc drawn between the bridging contact sleeve and one tubular fixed contact is transferred to the separated rooting elec- trodes and is then extinguished.

236759

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