Puffer type gas-blast circuit breaker

Details Puffer type gas-blast circuit breaker Puffer type gas-blast circuit breaker

1988-06-10

1989-07-25

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148B, H01H 3388

Patent

active

048516228

ABSTRACT:
In a puffer type gas-blast circuit breaker, a fixed arc contact (1) which has a hollow (1a) therein, with at least one vent (1b) on an end part thereof, stores a high pressure insulation gas which is heated and expanded by an arc formed between the fixed arc contact (1) and a moving arc contact (6) and is pressurized by passing through a nozzle (8) in an operation breaking a current, and after breaking of the current, the insulation gas stored in the hollow (1a) flows out of the vent (1b) and expands around the end part of the fixed arc contact; whereby a dielectric strength of the space around the end of the fixed arc contact (1) is strengthened so that reignition between the fixed arc contact (1) and the moving arc contact (6) is avoided.

REFERENCES:
patent: 3909572 (1975-09-01), Tsubaki et al.
patent: 3946183 (1976-03-01), Milianowicz
patent: 4445020 (1984-04-01), Ueda et al.
patent: 4594488 (1986-06-01), Talpo
patent: 4736080 (1988-04-01), St Jean et al.

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