Apparatus and method for measuring the dissipation factor of an insulator
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United States of America Patent
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Jan 12, 2016
Grant Date -
May 2, 2013
app pub date -
Jun 22, 2011
filing date -
Jun 29, 2010
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Abstract
An apparatus for measuring the loss factor of an insulator for medium or high voltages is equipped with a tap adapter forming a point for picking up an electrical signal, and comprises a reference capacitor having a first electrode connected to the tap adapter and a second electrode; a first voltage detection module is connected to the first electrode of the reference capacitor for detecting a signal representative of the voltage applied to the reference capacitor; an active electronic device is connected to earth and to the second electrode of the reference capacitor for keeping the potential of the second electrode at a predetermined reference value; a second voltage detection module is connected to an output of the active electronic device in order to detect a signal representative of the electric current that flows through the reference capacitor.
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