Hybrid high voltage DC contactor with arc energy diversion

Details Hybrid high voltage DC contactor with arc energy diversion Hybrid high voltage DC contactor with arc energy diversion

2008-01-02

2010-10-19

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

C361S002000, C361S008000

Reexamination Certificate

active

07817382

ABSTRACT:
A contactor may operate to interrupt current in a circuit while the circuit is operating under load. A shunt is provided to by-pass surge power current around contacts to reduce arcing. The shunt includes a solid-state switch that may be operated in a series of pulses during movement of the contacts. The pulse control unit may detect a potential for arcing and then provide for periodic pulsing operation of the shunt. Because the solid-state switch may operate discontinuously, the contactor may be constructed with a switch that is selected on a basis of its pulse rating.

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