Electricity: conductors and insulators – With fluids or vacuum – With cable or conduit preinstallation devices
Patent
1985-04-17
1986-01-14
Askin, Laramie E.
Electricity: conductors and insulators
With fluids or vacuum
With cable or conduit preinstallation devices
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
Endo Fumihiro
Ishikawa Toshio
Kamata Yuzuru
Yamagiwa Tokio
Askin Laramie E.
Hitachi , Ltd.
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