H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/230
H01H 33/70 (2006.01) H01H 33/90 (2006.01)
Patent
CA 1241686
SELF-FLOW GENERATING GAS INTERRUPTER Abstract of the Invention A unique self-flow generating gas inter- rupter of the type wherein arc-extinction is performed by the creation of a negative pressure region brought about by the separation of the interrupter contacts. The inter- rupter incorporates a novel arrangement of valves so as to optimize the performance of the interrupter over the broad range of interrupting currents. In one embodiment a check valve is used to supply gas from the exterior of the interrupter casing and into the arcing chamber in response to the pressure within the arcing chamber decreasing or falling below a pre-selected value. In this manner, less force is required to operate the interrupter when low- currents are encountered. In another embodiment a relief valve is used to release the pressure developed in the arcing chamber in the event that a large interrupting current is encountered. Still another embodiment incor- porates both the check valve and the relief valve.
463129
Mcgraw-Edison Company
Shapiro Cohen
LandOfFree
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