Leakage current interrupter

Details Leakage current interrupter Leakage current interrupter

2005-06-22

2009-11-10

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

Reexamination Certificate

active

07616413

ABSTRACT:
A leakage current interrupter is provided. The leakage current interrupter includes: a leakage current detector having resistors connected to the external metal cover of the power cable, and generating a voltage corresponding to a leakage current through the resistors when the leakage current flows through the external metal cover of the power cable; a power source connected to the power line and the neutral line to generate DC power when AC power is applied through the power line and the neutral line; a power interrupter opening the power line and the neutral line when the DC power is applied; and a controller applying the DC power to the power interrupter when the leakage current detector generates a voltage. Therefore, it is possible to reduce manufacturing cost, and to provide a self-test function to the leakage current interrupter to increase the operation reliability of the leakage current interrupter. Therefore, it is possible to reduce manufacturing cost, and to provide a self-test function to the leakage current interrupter to increase operation reliability of the leakage current interrupter.

REFERENCES:
patent: 6738241 (2004-05-01), Aromin
patent: 2004/0228048 (2004-11-01), Aromin
RV410: Low Power Two-wire Griund Fault Interrupter Controller, Aug. 1997, Raytheon Electronics, pp. 1-3.
RV4145A: Low Power Griund Fault Interrupter, Mar. 2002, Fairchild Semiconductor, pp. 1-7.

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