Voltage transformer for use in high voltage switching installati

Electricity: power supply or regulation systems – Remote sensing

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307147, 174 27, 174 99R, 336175, 323 93, H01F 2700, H01B 906

Patent

active

039421066

ABSTRACT:
An improved voltage transformer for use in a gas insulated or liquid insulated high voltage switching installation enclosed within a metal encapsulation and carrying several conductors, in which each conductor is surrounded by a tube which is conductive at least on its surface which faces the conductor with the tubes connected to each other through attachment means which attach them in an insulated manner to the metal encapsulation. The resulting arrangement causes each tube together with the conductor within it to form a high potential capacitor which can be coupled in series with a low potential capacitor to form a voltage divider with the voltage taken off the low potential capacitor and used to provide an indication of the voltage present on the conductor. Tubes which are plastic with conductive coatings and metal tubes are disclosed with the tubes fastened to at least one support disk of insulating material which is then attached to the metal encapsulation.

REFERENCES:
patent: 1873977 (1932-08-01), Naef
patent: 3701944 (1972-10-01), Amalric
patent: 3730968 (1973-05-01), Szente-Varga
patent: 3767837 (1973-10-01), Graybill

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