Method and apparatus for detecting arcing in AC power systems by monitoring high frequency noise
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United States of America Patent
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Mar 17, 1998
Grant Date -
N/A
app pub date -
May 2, 1995
filing date -
Jul 30, 1992
priority date (Note) -
In Force
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Abstract
Arcing in an AC power system is detected by monitoring the power waveform for wideband high-frequency noise, and examining the detected noise for patterns of variation in its amplitude synchronized to the power waveform. A narrowband, swept-frequency detector and synchronous averaging may be employed to improve discrimination of arc noise from background interference. An arcing fault interrupter for controlling a single circuit, and a whole house monitor, for detecting arcing anywhere in a house, are described.
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