Method of locating a fault in an electric power cable

Details Method of locating a fault in an electric power cable Method of locating a fault in an electric power cable

1996-03-11

1998-03-10

Wieder, Kenneth A.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

324536, 324133, G01R 3108, G01R 1914

Patent

active

057265747

ABSTRACT:
A method of pinpointing the location between manholes of a fault in an electrical cable typically buried underground in an urban environment, the fault being caused by an insulation defect which may be broken down by a high voltage includes the steps of applying the voltage to break down the fault insulation defect to induce a transient fault pulse on the cable on both sides of the fault traveling away from the fault. By the use of a ferrite type transformer coupler producing an output voltage, the direction of the transient fault pulse is determined by relating the polarity of the output voltage to the initial high voltage pulse which was applied.

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