Circuit breaker with means for producing a flow of arc-extinguis

Details Circuit breaker with means for producing a flow of arc-extinguis Circuit breaker with means for producing a flow of arc-extinguis

1980-05-12

1982-03-30

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3388

Patent

active

043225918

ABSTRACT:
A puffer type circuit breaker is provided with a pump means consisting of a piston and a cylinder for producing a blast of arc-extinguishing gas. The piston is axially displaceable against a spring force, and the cylinder is joined to the movable contact of the circuit breaker and arranged, during a breaking operation, to compress the gas in the cylinder space of the pump means to achieve a blast of extinguishing gas towards the contact area. A spring holds the piston pressed against a stop in the closed as well as the open position of the circuit breaker. The spring has such a high pre-stress that the piston only moves upon breaking of short-circuit currents.

REFERENCES:
patent: 2922010 (1960-01-01), Cromer et al.
patent: 3331935 (1967-07-01), Milianowicz
patent: 3786215 (1974-01-01), Mauthe

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