Axial magnetic field interrupter

Details Axial magnetic field interrupter Axial magnetic field interrupter

1990-01-02

1991-01-01

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3366

Patent

active

049820591

ABSTRACT:
A cylindrical coil conductor incorporated in a vacuum interrupter comprises a cylindrical body with a plurality of inclined slits therein defining a plurality of current paths. The coil conductor is uniformly cylindrical to reduce radial magnetic fields, which tend to cancel the axial magnetic field generated by the coil conductor. The cylindrical coil conductor electrically connects to the rear surface of a main electrode through a copper ring to maintain current on the periphery of the main electrode. The front surface of the main electrode includes a ring-shaped protrusion to define a point of contact with an opposite main electrode. Current flows into the protrusion, through the main electrode to the copper ring, thereby defining a short current path with a minimal resistance.

REFERENCES:
patent: 4390762 (1983-06-01), Watzke
patent: 4438307 (1984-03-01), Lippmann et al.
patent: 4839481 (1989-06-01), Nash et al.

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