Ground scheme identification method
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United States of America Patent
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Sep 23, 2014
Issued Date -
N/A
app pub date -
Mar 31, 2011
filing date -
Mar 31, 2011
priority date (Note) -
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Abstract
The present techniques include methods and systems for detecting the grounding condition of an electrical system to automatically determine a suitable electrical drive configuration. The drive includes a test resistor which may be connected or disconnected from the drive to measure different drive voltages. The measured drive voltages are analyzed to determine a type of grounding configuration of the electrical system in which the drive is to be installed. Embodiments also include determining ground resistance condition such as a high resistance ground (HRG) fault or a ground resistance fault when the drive is in operation.
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