Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1976-04-01
1977-09-13
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
H01H 3370
Patent
active
040484564
ABSTRACT:
This puffer-type circuit breaker comprises two electrodes between which an arc is established during interruption and a nozzle of insulating material containing a flow passage having a throat through which the arc extends. A plurality of injection passages extend generally radially of the nozzle in the throat region, and a plurality of feed passages communicate with the injection passages and extend through the body of the nozzle from one end of the nozzle to the injection passages. Pump means at said one end of the nozzle operates during interruption to inject arc-extinguishing gas through the feed passages and the injection passages into the throat. The injected gas flows axially of the arc in two streams directed in opposite directions from the throat toward the electrodes. The stream flowing toward the pump end of the nozzle is conducted to the exterior of the nozzle through a plurality of exhaust ports extending transversely of said flow passage in locations circumferentially spaced from said feed passages.
REFERENCES:
patent: 3602670 (1971-08-01), Teijeiro
patent: 3659065 (1972-04-01), Roidt et al.
patent: 3739125 (1973-06-01), Noeske
patent: 3769479 (1973-10-01), Leeds
patent: 3940583 (1976-02-01), Hertz
patent: 3941962 (1976-03-01), Thaler
patent: 3946180 (1976-03-01), Votta
Freedman William
General Electric Company
Macon Robert S.
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