Partial discharge detector for gas-insulated electric apparatus
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United States of America Patent
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Mar 17, 2015
Grant Date -
Apr 7, 2011
app pub date -
Oct 1, 2010
filing date -
Oct 2, 2009
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Abstract
A partial discharge detector for gas-insulated electric apparatus of an embodiment detects an electromagnetic wave ascribable to partial discharge in a gas-insulated electric apparatus which is filled with insulating gas, and in which a conductor to which high voltage is applied is supported in conductor supporting holes provided at centers of a plurality of disk-shaped insulating plates, and a plurality of flanged-conductive pipes form a hermetically sealed container, with flange portions thereof pressingly sandwiching and holding peripheral edge portions of the insulating plates from both surface sides. The partial discharge detector for gas-insulated electric apparatus of this embodiment is characterized in that an antenna detecting the electromagnetic wave is disposed in close contact on a portion, of each of the insulating plates, exposed from the flange portions of the flanged conductive pipes, via an elastic member capable of transmitting the electromagnetic wave.
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