Ground fault protective device

Details Ground fault protective device Ground fault protective device

1976-06-15

1978-06-06

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

335 18, 361 98, H02H 328

Patent

active

040939774

ABSTRACT:
A self-powered self-contained ground fault protective device including a current monitor, an electronic circuit for amplifying the output of the current monitor, and a relay connected to the amplifying circuit and adapted to operate whenever ground fault current through the current monitor rises above a predetermined level. The current monitor, amplifying circuit, and relay are all supported and enclosed by a molded insulating housing.

REFERENCES:
patent: 3440580 (1969-04-01), Molenaar
patent: 3512045 (1970-05-01), Tipton et al.
patent: 3539866 (1970-11-01), Stevenson
patent: 3737726 (1973-06-01), Tarchalski
patent: 3855502 (1974-12-01), Pardue et al.
patent: 3864649 (1975-02-01), Doyle
patent: 3898528 (1975-08-01), Runtsch et al.
patent: 3899717 (1975-08-01), Legatti et al.

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