Power supply for ground fault circuit interrupter
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United States of America Patent
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-
Apr 23, 1996
Grant Date -
N/A
app pub date -
Jan 31, 1994
filing date -
Jan 31, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A ground fault interruption circuit detects a ground condition associated with a load in an electrical distribution system and disconnects the load in response to a ground fault condition. The circuit includes a ground fault detector connected to receive a ground fault imbalance signal and operative in response to a power signal, having specified voltage and current levels, to provide a trigger signal to disconnect the load from the system when the imbalance exceeds a certain level. A regulated power supply circuit a substantially constant current and voltage signal to the detector to minimize excess power to the detector and heat loss. The power supply includes a start up and storage portion and a constant current supply portion.
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