Partial discharge detecting device for resin-molded transformer

Details Partial discharge detecting device for resin-molded transformer Partial discharge detecting device for resin-molded transformer

1992-01-23

1993-08-03

Snow, Walter E.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324546, 324158R, G01R 3106

Patent

active

052333051

ABSTRACT:
Typically, in a partial discharge detecting device for a resin-molded transformer with tap terminals of a no-load switching type on the high voltage winding, the output signal of a partial discharge detecting sensor connected between the tap terminals is applied through an amplifier circuit to an indicator. The sensor is arranged on the high potential side whose potential corresponds to the potential to ground of the tap terminals. This construction contributes to detection of void coronas formed in the transformer with high accuracy.

REFERENCES:
patent: 3501694 (1970-03-01), Ito
patent: 3775676 (1973-11-01), Harrold et al.
patent: 4245187 (1981-01-01), Wagner et al.
patent: 4710705 (1987-12-01), Kawabata

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