Solid-state trip device of a molded case circuit breaker

Details Solid-state trip device of a molded case circuit breaker Solid-state trip device of a molded case circuit breaker

1988-09-29

1989-10-31

Jennings, Derek S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 97, 361 2, 361 5, H02H 308

Patent

active

048781444

ABSTRACT:
A solid-state trip device including an instantaneous trip device formed by arc detectors 46R, 44S, 46T located in proximity to the main contacts 17R, 17S, 17T of the circuit breaker 10. The light signals emitted by the arc detectors 46R, 46S, 46T are transmitted by optical fibers 48 to a light-sensitive electronic component which emits an arcing signal. This arcing signal causes tripping of the circuit breaker 10 only if a fault signal is present.

REFERENCES:
patent: 4589052 (1986-05-01), Dougherty
patent: 4644438 (1987-02-01), Puccinelli et al.
patent: 4694373 (1987-09-01), Demeyer
patent: 4733321 (1988-03-01), Lindeperg
patent: 4780787 (1988-10-01), Dano et al.

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