H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/230
H01H 33/64 (2006.01) H01H 33/70 (2006.01) H01H 33/74 (2006.01)
Patent
CA 1073018
11LA 04031 ABSTRACT OF THE DISCLOSURE This puffer-type circuit breaker comprises two electrodes between which an arc is established during interruption and a nozzle of insulating material contain- ing a flow passage having a throat through which the are 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 circumferen- tially spaced from said feed passages.
274746
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