Gas blast circuit breaker

Details Gas blast circuit breaker Gas blast circuit breaker

H - Electricity

01

H

H01H 33/72 (2006.01) H01H 33/70 (2006.01)

Patent

CA 2046262

A gas blast circuit breaker comprises an insulation nozzle for blowing extinguishing gas to an arc generated between a stationary contact and a movable contact. The nozzle has a throat section into and out of which one of the two contacts is movable and a divergent section provided downstream of the throat section. A slanting surface for increasing a reflectivity of energy intensity of the arc is formed on the divergent section of the nozzle. The nozzle is formed of a fluoroplastic material and boron nitride powder not more than 15 vol.% added as a filler.

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