High voltage measuring circuit coupled to the capacitive groundi

Details High voltage measuring circuit coupled to the capacitive groundi High voltage measuring circuit coupled to the capacitive groundi

1988-10-27

1990-04-03

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

324102, 324111, 324126, G01R 120, G01R 1900

Patent

active

049143824

ABSTRACT:
A high voltage measuring circuit for broadband measurement of transient signals occurring in high voltage apparatus. The measuring circuit is housed in a shielded housing having an input sensing circuit for connection to a capacitive grounded tap of the high voltage apparatus. The sensing circuit is connected to an output circuit through an electrical shielded connection. The measuring circuit generates output signals which are replicas of the transient signals appearing on the bushing of the high voltage apparatus. The broadband of the measuring circuit extends over a frequency range of from about 1 Hz to 1 MHz and has a signal level higher than background noise.

REFERENCES:
patent: 1795207 (1931-03-01), Frick
patent: 1981716 (1934-11-01), Austin
patent: 3226641 (1965-12-01), Miller
patent: 3870927 (1975-03-01), Hughes
patent: 4374359 (1983-02-01), Missout
patent: 4477772 (1984-10-01), So
patent: 4777428 (1988-10-01), Lundback

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