Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of ground fault indication
Reexamination Certificate
2006-12-27
2009-12-01
Natalini, Jeff (Department: 2831)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of ground fault indication
C361S088000, C307S009100
Reexamination Certificate
active
07626396
ABSTRACT:
Systems and methods are disclosed for compensating electrical leakage and detecting balanced electrical leakage for a machine hosting an HV system. In one embodiment, a fault detection and compensation system includes a DC power supply electrically referenced to a machine frame, a leakage correction switch connected to the machine frame, a current source controlled by the leakage correction switch, and a voltage measuring device that measures an offset voltage reflecting whether the HV system is in an unbalanced fault condition. The fault detection and compensation system further includes a leakage detection and compensation controller that compensates for the unbalanced fault condition by controlling the leakage correction switch and the current source.
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Lindsey Robert Wayne
Selvey Dustin Craig
Sychra Robert Roy
Wild Arthur
Caterpillar Inc.
Finnegan Henderson Farabow Garrett & Dunner
Natalini Jeff
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