Electric circuit-breaker for alternating currents

Details Electric circuit-breaker for alternating currents Electric circuit-breaker for alternating currents

1975-05-21

1977-02-22

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3368

Patent

active

040093581

ABSTRACT:
A current-interrupting chamber containing stationary and moving contacts is filled with a dielectric consisting of SF.sub.6 gas maintained in the liquefied state under a pressure of considerably higher value than the critical pressure. An arc-quenching cylinder placed within the chamber in communication therewith contains a piston which is actuated conjointly with the moving contact so as to discharge a jet of liquid dielectric which is directed between the contacts in the radial centripetal direction and extinguishes the arc formed when the contacts are separated.

REFERENCES:
patent: 3002073 (1961-09-01), Cobine
patent: 3842227 (1974-10-01), Gratzmuller

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