Apparatus including a plurality of spaced transformers for locat

Details Apparatus including a plurality of spaced transformers for locat Apparatus including a plurality of spaced transformers for locat

1977-07-08

1978-08-29

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324127, 324133, 340650, 340664, G01R 3108, G01R 1916

Patent

active

041106830

ABSTRACT:
A cable fault locator for sensing faults such as short circuits in power cables. The apparatus includes a plurality of current transformers strategically located along said cable. Trigger circuits are connected to each of the current transformers for placing a resistor in series with a resistive element responsive to an abnormally high current flowing through that portion of the cable. By measuring the voltage drop across the resistive element, the location of the fault can be determined.

REFERENCES:
patent: 3099828 (1963-07-01), Kelley
patent: 3125720 (1964-03-01), Swift
patent: 3200392 (1965-08-01), Chumakov
patent: 3356939 (1967-12-01), Stevenson
patent: 3477019 (1969-11-01), Hartmann
patent: 3579280 (1971-05-01), Florance et al.
patent: 3588689 (1971-06-01), Crawford
patent: 3771049 (1973-11-01), Piccione
patent: 3832678 (1974-08-01), Gysell et al.

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