Circuit for the protected power supply of an electrical load

Details Circuit for the protected power supply of an electrical load Circuit for the protected power supply of an electrical load

1997-05-09

1999-09-14

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 5, H01H 930

Patent

active

059531894

ABSTRACT:
A circuit for the protected alternating current power supply of an electrical load, the circuit including, in series, a protective circuit breaker and a bi-directional electronic switch in parallel to which a shunt contactor is connected. An electrical component is connected in series and upstream from the shunt contactor. The electrical component is intended to establish a continuous voltage (V) at the terminals of the electronic switch and its impedance is chosen in such a way that the electronic switch to which command pulses are sent periodically, is made a conductor, when an overload current appears in the circuit and when the contactor is closed.

REFERENCES:
patent: 3868549 (1975-02-01), Schaefer et al.
patent: 4725911 (1988-02-01), Dieppedalle et al.

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