Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Reexamination Certificate
2011-06-28
2011-06-28
Nguyen, Hoai-An D (Department: 2858)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
C324S076770
Reexamination Certificate
active
07969155
ABSTRACT:
A method for identifying a fault condition associated with a power line conductor of an electrical power distribution network. The method determines if a load current carried by the conductor is above a minimum load current, determines a learned phase angle relationship between the load current and a source signal, determines a load current magnitude, determines a real-time phase angle relationship between the load current and the source signal and indicates a fault condition when the real-time phase angle relationship is within a predetermined number of angular degrees of the learned phase angle relationship and when the load current magnitude exceeds a fault-indicating current.
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EPO Examination Report dated Jul. 29, 2009.
Domo James Francis
Varghai Mehri
Barger, Esq. Andrew
Beusse Wolter Sanks Mora & Maire, P.A.
DeAngelis, Esq. John
Nguyen Hoai-An D
Thomas & Betts International Inc.
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