Ground fault circuit interrupter having loss of neutral or loss

Details Ground fault circuit interrupter having loss of neutral or loss Ground fault circuit interrupter having loss of neutral or loss

1989-04-19

1991-02-19

Jennings, Derek S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 45, 361 92, H02H 324

Patent

active

049949330

ABSTRACT:
A ground fault circuit interrupter is described which provides protection in the event of loss of neutral or ground, excess potential between neutral and ground and reversed input connections. Separate, independent tripping circuits are used for these latter faults and for ground faults, thus eliminating problems due to interfering signals and reducing reliance on any one component or group of components. An opto-emitter and opto-detector arrangement is used for detecting and causing tripping of a circuit breaker in the event of faults other than ground faults.

REFERENCES:
patent: 4068276 (1978-01-01), Pintell
patent: 4598331 (1986-07-01), Legatti
patent: 4816957 (1989-03-01), Irwin

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