Gas-insulated electrical apparatus with electret for captivating

Electricity: conductors and insulators – With fluids or vacuum – With cable or conduit preinstallation devices

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Details

134 42, 174 14R, H02G 506, H02B 1306, H02G 100

Patent

active

045647216

ABSTRACT:
An electret capable of holding electric charges semi-permanently is used to attract conductive particles generated or intruded in a gas-insulated electric apparatus during assembly work including an operation test of movable parts thereof, thus improving the reliability of insulation characteristic of the apparatus.

REFERENCES:
patent: 4330682 (1982-05-01), Dale et al.
patent: 4343964 (1982-08-01), Wootton

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