Ground fault circuit interrupter and electronic module therefor

Details Ground fault circuit interrupter and electronic module therefor Ground fault circuit interrupter and electronic module therefor

H - Electricity

02

H

348/24

H02H 3/26 (2006.01) H02H 3/027 (2006.01) H02H 3/17 (2006.01) H02H 3/33 (2006.01)

Patent

CA 1059606

ABSTRACT OF THE DISCLOSURE An electronic module for ground fault circuit interrupters (GFCI) in both circuit breaker and receptable configurations includes a signal processor having a plurality of fault signal threshold stages for differentially charging an itegrating capacitor in accordance with the magnitude of the fault signal as amplified by a high gain differential amplifier. The accumulated charge on the integrating capacitor controls the generation of a trip signal. The processor also includes a highly stable grounded neutral excitation oscillator and a noise rejection network to combat nuisance tripping.

234731

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