Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2007-05-31
2010-12-07
Koval, Melissa J (Department: 2831)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C361S042000, C361S045000, C361S115000
Reexamination Certificate
active
07847562
ABSTRACT:
A resistive fault condition detector for conducting one or more tests of a circuit to detect a resistive fault condition. The detector includes means for determining changes in current through a load during the test, and means for measuring changes in first and second voltages respectively between the circuit's live and neutral conductors and between the circuit's neutral and ground conductors during the test, the changes in the first and second voltages corresponding to the changes in the current respectively. The detector also includes means for calculating apparent source impedances for the live and neutral conductors respectively, based on the changes in current and the measured changes in the first and second voltages respectively, and means for calculating an estimated source impedance for each of the live and neutral conductors for the test.
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Jones Nicolas
Montgomery Steven R.
2D2C, Inc.
Baldridge Benjamin M
Koval Melissa J
Pequignot Matthew A.
Pequignot & Myers LLC
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