Self-extinguishing type circuit interrupter

Details Self-extinguishing type circuit interrupter Self-extinguishing type circuit interrupter

H - Electricity

01

H

306/230

H01H 33/72 (2006.01) H01H 33/95 (2006.01)

Patent

CA 1097396

ABSTRACT OF THE DISCLOSURE A circuit interrupter comprising a first and a second chamber both containing an arc extinguishing gas such as SF6 gas, each chamber defining a space independent of the other when a pair of contacts is closed. Between the first and second chambers a movable piston member is disposed for transmitting pressure from the first chamber to the second chamber. When the arc extinguishing fluid in the first chamber is pressure-raised by the energy of an electric arc established between the contacts at their initial separation stage, the movable piston member is moved to compress the arc extinguishing fluid within the second chamber. The arc extinguishing fluid thus compressed is puffed at the electric arc to extinguish it.

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