Circuit protection system
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United States of America Patent
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Jul 14, 2009
Grant Date -
Jul 3, 2008
app pub date -
Dec 28, 2006
filing date -
Dec 28, 2006
priority date (Note) -
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Abstract
A method of protecting a circuit having power switching devices that includes communicating a current in at least one secondary switching device to at least one master switching device and determining a presence of a fault condition within at least a first zone based at least in part upon characteristics of the current in the at least one secondary switching device communicated to the at least one master switching device to perform differential protection.
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