Method and device for detection of a fault in a protected unit
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United States of America Patent
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Apr 11, 2017
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app pub date -
Feb 12, 2013
filing date -
Feb 12, 2013
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Abstract
A method to facilitate fault detection in the protected unit after connection to the at least a portion of the power system. A current is sensed in the protected unit during a plurality of different time periods. Compliance of at least one of the sensed currents with a respective first current criteria is determined based on a first current threshold value. On a condition that there is determined that at least one of the sensed currents comply with the respective first current criteria, a fault in the protected unit is detected.
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