Shock hazard protective apparatus for high voltage system

Details Shock hazard protective apparatus for high voltage system Shock hazard protective apparatus for high voltage system

1979-11-07

1982-01-19

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 42, H02H 333

Patent

active

043120229

ABSTRACT:
Protection against a high voltage apparatus becoming inadvertently grounded and thereby presenting a shock hazard is provided by introducing a ground fault interrupter in the power supply to the electrical control device which controls the supply of high voltage power. The two-wire power supply line between the ground fault interrupter and the control device has one wire grounded ahead of the interrupter and the other wire connected to the high voltage apparatus through a rectifier and a D.C. filter. Thus if the high voltage apparatus becomes accidentally grounded there is a drain to ground from the ground fault interrupter through the rectifier connection, which drain causes the interrupter to cut off the power supply to the control device thereby shutting down the high voltage apparatus.

REFERENCES:
patent: 4044395 (1977-08-01), Eckart
patent: 4156884 (1979-05-01), Eckart et al.
patent: 4159501 (1979-06-01), White
patent: 4233639 (1980-11-01), Klein et al.
patent: 4233640 (1980-11-01), Klein et al.

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