Motor protection device

Details Motor protection device Motor protection device

1974-07-12

1976-04-13

Goldberg, Gerald

317 31, 317 36TD, 317141S, H02H 328

Patent

active

039506754

ABSTRACT:
Electrical and electronic circuitry offering protection to motors, compressors and the like, from conditions of low energizing voltage or momentary voltage interruptions resulting in excessive mechanical load (locked rotor). When the undesirable condition is present, an internal relay prevents the equipment from being energized - transient conditions being allowed for by means of suitable time delay circuitry. The protection device provides significant improvement in safety and economy by preventing equipment from burning up.

REFERENCES:
patent: 3774082 (1973-11-01), Chang
patent: 3784846 (1974-01-01), Krick et al.
patent: 3814991 (1974-06-01), Hewitt

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