D. C. power controller with fuse protection

Details D. C. power controller with fuse protection D. C. power controller with fuse protection

1984-03-26

1985-08-20

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 12, 361104, H01H 3314

Patent

active

045368147

ABSTRACT:
A D.C. power controller for interrupting a high voltage high current D.C. power line supplying a load (L) from a D.C. power supply source (+270VDC) having power contacts (CCC, AC), actuator means (MA, SA) for operating the power contacts (CCC, AC), arc extinguishing means (AH1, AH2, AS1, AS2), arc shunting solid state elements (SSC) for receiving the arc current from the power contacts, electronic control means (CE) for controlling the actuator means, protective means comprising a fuse (F) and fuse shunt contacts (FSC) in parallel in the power line, and the electronic control means (CE) controlling the actuator means (MA, SA) to close first and open last the fuse shunt contacts with respect to the power contacts so that the fuse will blow to interrupt the power line in the event either the power contacts or the solid state elements fail to do so, and the electronic control means being supplied with power through the fuse to disable the same when the fuse blows so that the load cannot be reenergized before the fault is corrected.

REFERENCES:
patent: 3761734 (1973-09-01), Windecker
patent: 4025820 (1977-05-01), Penrod
patent: 4322771 (1982-03-01), Struger
patent: 4420784 (1983-12-01), Chen et al.

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