Arc-detecting circuit breaker

Details Arc-detecting circuit breaker Arc-detecting circuit breaker

1991-10-22

1993-06-29

Scott, J. R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148B, 307139, H01H 3326

Patent

active

052236820

ABSTRACT:
A circuit-breaker including at least one insulating interrupting chamber inside which there are contacts and a blast nozzle. The insulating interrupting chamber is placed on an insulating support containing a drive rod. The circuit-breaker further includes a first terminal and a second terminal. The circuit-breaker has at lest one fluorescent or scintillating optical fiber disposed inside the support and constituting a symmetrical loop around the drive rod. Each end of the fiber is connected to a photodiode equipped with an amplifier. Light propagated in the interrupting chamber, as a result of arcing, reaches the optical fiber loop via a light passage within a terminal of the interrupting chamber remote from the arcing zone within the interrupting chamber.

REFERENCES:
patent: 4513208 (1985-04-01), Kamata
patent: 4532499 (1985-07-01), Collin et al.
patent: 5072083 (1991-12-01), Thuries et al.
patent: 5089931 (1992-02-01), Thuries et al.
French Search Report; Aug. 1991.
Journal of Lightwave Technology, vol. 7, No. 7 Jul. 1989, N.Y., pp. 1029-1032 K. Muto: "Electric-Discharge Sensor Utilizing Fluorescent Optical Fiber".

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