Device for producing even closing of a circuit breaker

Details Device for producing even closing of a circuit breaker Device for producing even closing of a circuit breaker

1988-07-07

1990-07-31

Pellinen, A. D.

Electrical transmission or interconnection systems

Switching systems

Switch actuation

307117, 307132R, 361115, 200 6102, 371 251, H01H 4700

Patent

active

049452568

ABSTRACT:
A circuit breaker for opening and closing contacts disposed on each phase of a multiphase electric power line has a photo-diode array and a light emitting diode array disposed on opposite sides of a driving rod of a driving mechanism, with a light passing aperture provided in the driving rod. When the aperture in the rod crosses the respective light paths between the photo-diodes and the corresponding light emitting diodes, the photo-diodes issue electric output signals corresponding to movement of the driving rod. By processing these output signals, any abnormal breaking of the breaker contacts among the phases is detected.

REFERENCES:
patent: 4016384 (1977-04-01), LeRow, Jr. et al.
patent: 4204425 (1980-05-01), Mallick, Jr.
patent: 4270809 (1981-06-01), Ohmori et al.
patent: 4513208 (1985-04-01), Kamata
patent: 4562358 (1985-12-01), Hosel
patent: 4670812 (1987-06-01), Doerfler et al.

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