Power cable arcing fault detection system
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United States of America Patent
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Sep 10, 1991
Grant Date -
N/A
app pub date -
Dec 19, 1989
filing date -
Dec 19, 1989
priority date (Note) -
Expired
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Abstract
A system for detecting an arcing fault in a telephone central office DC power distribution conductor repeatedly measures the current flow in the distribution line, as with an inductive coupling, and derives a Fourier transform analysis spectrum from such measurements. The power values at intervals across the frequency spectrum are compared with recorded threshold template values encompassing the spectrum typical of an arcing event and an alarm condition is established when such threshold levels are exceeded.
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