Protective circuit for dynamic braking resistors

Details Protective circuit for dynamic braking resistors Protective circuit for dynamic braking resistors

1976-07-09

1977-09-13

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361103, 338 53, H02H 304

Patent

active

040486648

ABSTRACT:
A circuit for protecting a pair of dynamic brake resistors when either of two motors driving fans for cooling the resistors fails. A sensing circuit couples the terminal of the two motors to a switch circuit. The sensing circuit reduces the energy to the switch circuit which removes power to the resistors when the sensing circuit senses a failure in one of the motors.

REFERENCES:
patent: 3885200 (1975-05-01), Burkle
patent: 3898532 (1975-08-01), Frank

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