Apparatus and method for locating ground faults

Details Apparatus and method for locating ground faults Apparatus and method for locating ground faults

1982-09-13

1985-10-08

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 3108, G01R 3102

Patent

active

045463093

ABSTRACT:
An apparatus for locating ground faults on direct current control systems includes a low frequency current generator having a variable output, a Hall-effect current probe for detecting the low frequency current produced by the generator, a filter and amplifier connected to the output of the Hall-effect current probe for identifying and amplifying the low frequency signal and a read-out element connected to the output of the amplifier to indicate the relative magnitude of the low frequency signal. A method for locating ground faults on direct current control system while the system is energized is described.

REFERENCES:
patent: 2651021 (1953-09-01), Hays
patent: 3891895 (1975-06-01), Wittlinger
Hp Catalog-79 Edition, pp. 38 and 55, (Clip On Probe Ammeters #428B and #456A).

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