Ground fault current interrupter circuit with arcing protection
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United States of America Patent
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-
Jun 5, 1990
Grant Date -
N/A
app pub date -
Sep 29, 1989
filing date -
Sep 29, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ground fault current interrupter (GFCI) circuit is provided with the additional capacity of detecting and protecting against arcing between a power line and the metal sheath or cover of a power cable. An arc protection winding is located on the core of the GFCI differential transformer and is connected in series with a resistance between the metal sheath and a neutral or return line. By adjusting the number of turns of the arc protection winding and the size of the series resistance, the sensitivity of the arc portection arrangement to arcing current may be set at a desired level.
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