Vacuum interrupter

Details Vacuum interrupter Vacuum interrupter

Filed on

1981-11-10

Date issued

1984-01-24

Examiner

Macon, Robert S.

Patent Class

Electricity: circuit makers and breakers

SubClass

Liquid contact

SubSubClass

Time delay

Other Related Categories

H01H 3366

Type

Patent

Status

active

Patent number

044278578

Description

ABSTRACT:
A vacuum interrupter of parallel magnetic field electrode type comprising a pair of separatable arc electrodes disposed within a vacuum vessel, with each being provided on its back side with a conductive rod extending outwardly of the vacuum vessel. Coil electrodes are electrically connected between the associated arc electrode and rod for applying parallel magnetic fields to arc, and slits are formed in the arc electrodes for suppressing eddy currents of the arc electrodes resulting from the parallel fields. A reinforcement member of an electric conductivity higher than a main surface portion of the arc electrode is provided on the back side of the arc electrode opposite to said main surface portion so that the resulting arc current flows uniformly through the reinforcement member so that a higher interruption efficiency can be obtained for the vacuum interrupter.

REFERENCES:
patent: 3935406 (1976-01-01), Murano et al.
patent: 4196327 (1980-04-01), Kurosawa et al.
patent: 4336430 (1982-06-01), Kurosawa et al.

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