Gas-insulated circuit breaker

Details Gas-insulated circuit breaker Gas-insulated circuit breaker

H - Electricity

01

H

306/230

H01H 33/70 (2006.01)

Patent

CA 1243342

ABSTRACT OF THE DISCLOSURE A protrusion is formed downstream of the throat of an insulating nozzle of a gas-insulated circuit breaker of puffer type. Quenching gas, after collision with the protrusion, is blown against an arc generated between a fixed arcing contact and a moving arcing contact in the opening pro- cess of the gas-insulated circuit breaker. As a result, a pressure drop at or near the forward end (Q) of the fixed arcing contact can be prevented thereby to improve the in- sulation strength in the opening process.

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