Circuit interrupter having an electromagnetic repulsion device

Details Circuit interrupter having an electromagnetic repulsion device Circuit interrupter having an electromagnetic repulsion device

1975-06-30

1977-01-04

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335147, 335195, H01H 7510, H01H 7710

Patent

active

040017389

ABSTRACT:
Circuit interrupter having a magnetic circuit energized by the current flowing through the interrupter and an induction plate that is movable with the movable contact of the interrupter. The abrupt rising of a fault current induces secondary currents in the induction plate which is located in the air gap of the magnetic circuit as long as the interrupter is in the closed-circuit position. The secondary currents tend to expel the induction plate from the air gap thereby moving the movable contact vigorously away from the magnetic circuit.

REFERENCES:
patent: 3263042 (1966-07-01), Dyer et al.
patent: 3663903 (1972-05-01), Kussy et al.
patent: 3663905 (1972-05-01), Kussy et al.
patent: 3887888 (1975-06-01), Bayles et al.

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