Electric motor comprising a thermistor-type overcurrent protecti

Details Electric motor comprising a thermistor-type overcurrent protecti Electric motor comprising a thermistor-type overcurrent protecti

1986-03-03

1987-12-29

Scott, J. R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

361 27, 361106, 318783, 318434, 318471, H02H 504, H02H 708

Patent

active

047164867

ABSTRACT:
A device providing protection against over-currents in the windings of an electric motor having a rotor (3) and at least two windings (1, 2) comprises at least two parallel thermistors (17, 18) each mounted in series with at least one motor winding (1, 2).

REFERENCES:
patent: 3673538 (1972-06-01), Faxon
patent: 3708720 (1973-01-01), Whitney et al.
patent: 3965392 (1976-06-01), Moorhead et al.

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