Ground fault and neutral fault detection circuit

Details Ground fault and neutral fault detection circuit Ground fault and neutral fault detection circuit

1974-12-20

1977-03-15

Trammell, James D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 93, H02H 328

Patent

active

040126684

ABSTRACT:
A circuit is disclosed for detecting ground faults and neutral faults and for providing power interruption in response thereto. The circuit monitors the current flow in the line and neutral conductors and provides a signal to a power interruption circuit in the event that a ground fault or a neutral fault condition is detected. In addition, a signal having a certain frequency is generated and coupled on the neutral line to enhance the probability of detecting neutral faults.

REFERENCES:
patent: 3611035 (1971-10-01), Douglas
patent: 3638072 (1972-01-01), Kobayashi et al.
patent: 3713003 (1973-01-01), Benham
patent: 3732463 (1973-05-01), Dale
patent: 3772569 (1973-11-01), Wible
patent: 3800189 (1974-03-01), Montz

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