Microprocessor based electrical contactor with distributed conta

Details Microprocessor based electrical contactor with distributed conta Microprocessor based electrical contactor with distributed conta

1992-09-28

1995-08-08

Pellinen, A. D.

Electrical transmission or interconnection systems

Switching systems

With operation facilitating feature

361166, H01H 956

Patent

active

054401801

ABSTRACT:
A multiphase contactor with solid state circuity gating rectified pulses to an electromagnetic coil to close and hold closed contacts for each phase, sequentially for each successive opening of the contactor adjusts the delay angle of the last pulse to rotate the sequence in which the individual phase currents are interrupted. By alternately making the last pulse positive or negative the polarity of the interrupted current alternates to further promote even contact wear.

REFERENCES:
patent: 3909955 (1975-10-01), Janke
patent: 4720763 (1988-01-01), Bauer
patent: 4769737 (1928-09-01), Ogita et al.
patent: 4833284 (1989-05-01), Park
patent: 4922363 (1990-05-01), Long et al.
patent: 5055962 (1991-10-01), Peterson et al.

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