Gas blast circuit breaker

Details Gas blast circuit breaker Gas blast circuit breaker

1978-12-18

1980-09-30

Truhe, J. V.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200147A, 200148A, H01H 930

Patent

active

042257620

ABSTRACT:
A gas blast circuit breaker having a movable contact, a mating contact and a nozzle aperture through which the movable contact can travel; the nozzle aperture is disposed in a wall dividing the switching chamber and the wall supports an arc during switching-off. The mating contact is arranged on a piston which is spring loaded in the opening direction and follows the movable contact at the beginning of the latter's switching-off motion. In the process, the gas located between the end faces of the piston and the mating contact facing the movable contact and the wall dividing the switching chamber is compressed until the contacts are separated, when the gas flow, under pressure, serves to cool the arc.

REFERENCES:
patent: 2280321 (1942-04-01), Thommen
patent: 3014107 (1961-12-01), Cobine et al.
patent: 3985988 (1976-10-01), Korner et al.

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