Puffer type gas circuit

Details Puffer type gas circuit Puffer type gas circuit

1983-11-21

1984-08-21

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148R, H01H 3388

Patent

active

044671580

ABSTRACT:
A puffer type gas circuit breaker comprises a stationary piston, a movable puffer cylinder into which the stationary piston is inserted, a ring-shaped movable arcing contact provided at the forward end of the movable puffer cylinder, a rod-shaped stationary arcing contact disposed concentrically with the ring-shaped movable arcing contact, and a nozzle which blows compressed arc-extinguishing gas filled in the movable puffer cylinder on to arcs produced between both arcing contacts when the operation of the circuit breaker is actuated thereby puffing out said arcs, wherein an arc-resisting section prepared from arc-resisting metal is mounted on those portions of both arcing contacts which are exposed to arcs, the arcs touches the arc-resisting portions alone, thereby preventing both arcing contacts from being damaged by arcs. No arcs arises between both arcing contacts before the shutoff of current; restriking does not appear between the arcing contacts after the shutoff of current; and current can be shut off under a stable condition.

REFERENCES:
patent: 2459599 (1949-01-01), Strom
patent: 3839613 (1974-10-01), Tsubaki et al.
patent: 3909572 (1975-09-01), Tsubaki et al.
patent: 4229627 (1980-10-01), Rostron

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