Vacuum envelope for current limiter

Details Vacuum envelope for current limiter Vacuum envelope for current limiter

1977-08-05

1981-06-30

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3366

Patent

active

042764556

ABSTRACT:
An improved envelope for a vacuum device circuit interrupter of the type having a pair of relatively movable electrodes within a vacuum envelope and including magnetic field arc suppression. The envelope includes end portions which support the electrodes and an intermediate insulating portion which surrounds and is spaced from the electrodes. Means for producing a magnetic field is outside the envelope. The insulating portion is of a shape which provides a greater distance between the electrodes and the surrounding insulating portion in the direction in which an interelectrode arc is deflected by the magnetic field. In the preferred embodiment the insulating portion is substantially cylindrical in shape with a pair of protruding side tubes. The interrupter envelope is oriented so the arc is deflected down the inside of the side tubes.

REFERENCES:
patent: 1836654 (1931-12-01), Dorn et al.
patent: 1941273 (1933-12-01), Prince
patent: 3071667 (1963-01-01), Lee
patent: 3261954 (1966-07-01), Yonkers
patent: 4021628 (1977-07-01), Kimblin

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