Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1985-01-14
1986-03-18
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200148R, 200150G, H01H 3388
Patent
active
045770735
ABSTRACT:
The present invention relates to an electrical circuit breaker with arc extinguishing compressed fluid, in which the compression of the extinguishing fluid is caused in a mixed way, by the pneumatic action of a compressing piston solid with the movable contacts of the circuit breaker and by pressure self-generation, following the action of the electrical arc, which decomposes and heats the fluid. This compression in a mixed form takes place within a chamber provided within a movable body assembled on the stationary contact of the circuit breaker and suitable to follow, under the action of elastic means, along a certain path, the opening stroke of the movable contacts, which bear a blasting nozzle, which during said stroke path connects a zone of compression of the fluid under the action of the piston with said chamber of the movable body, and which, after the detachment from the movable body because of its stopping, allows the escape of blasts of compressed fluid, both from said chamber and from the compression zone, directed against the arc to the purpose of extinguishing it.
REFERENCES:
patent: 2933575 (1960-04-01), Baker
patent: 4112276 (1978-09-01), Cromer et al.
Macon Robert S.
SACE S.p.A. Costruzioni Elettromeccaniche
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