Method and apparatus for the identification of a faulty conductor in a multiple supply line
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United States of America Patent
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May 23, 1989
Grant Date -
N/A
app pub date -
Dec 3, 1986
filing date -
Dec 4, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of and apparatus for determining which if any phase of duplex supply lines wherein each phase w is assigned two conductors w1 and w2. The method and apparatus use an asymmetry value, for example a function of the relationship (output of 9) of the difference Iw1-Iw2 (output of 5) to the sum Iw1+Iw2 (output of 6) of the currents in the conductors w1 and w2. If the asymmetry level exceeds in absolute value a threshold level K(see 12 and 13), the conductor passing the current having the lowest amplitude is indicated as being sound.
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