Monitoring partial discharges

Details Monitoring partial discharges Monitoring partial discharges

1993-11-12

2000-06-20

Do, Diep N.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

324557, 324551, G01R 3108

Patent

active

060781807

ABSTRACT:
A method of initiating and monitoring partial discharges in an insulating medium is disclosed. Apparatus for performing the method is also disclosed. A relatively low frequency time varying exciting waveform is applied to a sample of an insulating medium. A trigger pulse of short duration is superimposed on the exciting waveform to initiate partial discharge activity in the sample. The apparatus includes a trigger pulse generator with a synchronizing circuit which provides a pre trigger signal for an oscilloscope, allowing the resultant partial discharge activity to be monitored.

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