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

1993-05-19

1995-01-31

Wieder, Kenneth A.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324536, G01R 3106

Patent

active

053861930

ABSTRACT:
A partial discharge detecting device for a resin-molded transformer having no-load switching tap terminals on a high voltage winding thereof. An amplifier amplifies the output detection signal of a partial discharge detecting sensor connected between the tap terminals, and an electro-optic converter converts the output signal of the amplifier into an optical signal. The optical signal is applied through an optical fiber to an opto-electric converter where it is converted into an electrical signal. The electrical signal is applied to an indicator. The partial discharge detecting sensor, the amplifier circuit, and the electro-optic converter are held at a potential corresponding to a potential of the tap terminals.

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
patent: 5159319 (1992-10-01), Dunk et al.
patent: 5233305 (1993-08-01), Nishizawa et al.
"The Research of a Method of Partial Discharge Detecting Device For Resin-Molded Transformer", Tatsuo Nishizawa et al., Electric Power and Energy Department of the Electrical Conference, pp. 552-553, Jul. 23, 1992.

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