AC Detector for DC ground faults and high capacitance in high-vo

Details AC Detector for DC ground faults and high capacitance in high-vo AC Detector for DC ground faults and high capacitance in high-vo

1978-03-27

1980-02-12

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

340650, G01R 3102

Patent

active

041885740

ABSTRACT:
A ground fault detector for use in combination with a floating secondary circuit of a direct current high voltage power supply comprising a detector circuit for sensing a relatively low electrical impedance. The existence of a low impedance represents a ground fault current between a part of the secondary circuit of the high voltage power supply and chassis ground to generate an alternating voltage. A rectifying circuit is operatively connected to the detector circuit for rectifying the alternating voltage. A warning indication network is responsive to the rectified alternating voltage for visually indicating the presence of the ground fault current.

REFERENCES:
patent: 2999231 (1961-09-01), Kusters et al.
patent: 3066284 (1962-11-01), McKinley et al.
patent: 3492567 (1970-01-01), Rissolo
patent: 3737758 (1973-06-01), Allington
patent: 3757169 (1973-09-01), Beresnikow
patent: 3947759 (1976-03-01), Briggs
patent: 3950742 (1976-04-01), MacMartin et al.
patent: 3991367 (1976-11-01), Chapman et al.

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