Self-extinguishing type circuit interrupter

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

1978-03-23

1981-02-24

Truhe, J. V.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148A, 200150D, H01H 3370

Patent

active

042530024

ABSTRACT:
A circuit interrupter comprising a first and a second chamber both containng an arc extinguishing gas such as SF.sub.6 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 a 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 second chamber. The arc extinguishing fluid thus compressed is puffed at the electric arc to extinguish it.

REFERENCES:
patent: 2061945 (1936-11-01), Koppelmann et al.
patent: 2442010 (1948-03-01), Leeds et al.
patent: 4139752 (1979-02-01), Itai et al.

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