Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Reexamination Certificate
2010-03-10
2011-11-29
Patel, Dharti (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Ground fault protection
C361S043000, C361S044000, C361S045000, C361S046000
Reexamination Certificate
active
08068318
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.
REFERENCES:
patent: 2007/0247769 (2007-10-01), Shi
patent: 2008/0007879 (2008-01-01), Zaretsky et al.
patent: 2008/0022153 (2008-01-01), Wang et al.
patent: 2010/0053826 (2010-03-01), Finlay et al.
Ku Ying-Ming
Lee Yi-Huang
Wang Chih-Huan
HDLS IPR Services
Patel Dharti
Shih Chun-Ming
YFC-Boneagle Electric Co., Ltd.
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