Apparatus for ground fault current interrupter with overall end-of-life indication and shutdown protection function
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United States of America Patent
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Nov 29, 2011
Grant Date -
Sep 15, 2011
app pub date -
Mar 10, 2010
filing date -
Mar 10, 2010
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for ground fault current interrupter with overall end-of-life indication and shutdown protection function includes a first silicon-controlled rectifier, a reverse unit, a test switch unit and a ground fault current interrupter. The ground fault current interrupter includes a second silicon-controlled rectifier, a switch unit, a switch control unit and a rectifier filter unit. When a test current leakage signal is generated, a drive power is provided to the reverse unit, and the input power supply generates a current leakage phenomenon. If the ground fault current interrupter fails, then the second silicon-controlled rectifier will not be triggered, which makes the reverse unit trigger the first silicon-controlled rectifier, such that the rectifier filter unit outputs a DC power flowing through the first silicon-controlled rectifier to interrupt a power supply of the switch control unit. Therefore, the input power supply electrically connected to the switch unit can not deliver any power to the load electrically connected to the switch unit.
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