Electronic differential switch

Details Electronic differential switch Electronic differential switch

2011-03-01

2011-03-01

Sterrett, Jeffrey L (Department: 2838)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

Reexamination Certificate

active

07898780

ABSTRACT:
An electronic differential switch is provided that is connected to a phase cable and a neutral cable of an electric network. The electronic differential switch includes a first winding associated with a second winding, at least one toroid associated with the first winding, a diode bridge, a driving relay for a main switch connected to the phase and neutral cables, an integrated circuit for measuring a differential current flowing in the first winding and generating a driving signal, and at least one driven switch coupled to the integrated circuit and driven by the driving signal. The first and second windings are coupled to one another through the integrated circuit and the diode bridge. The at least one driven switch is coupled to the driving relay through the diode bridge so as to excite the driving relay and close the main switch, or release the driving relay and open the main switch. Also provided is a method for controlling an alarm condition in an electric network.

REFERENCES:
patent: 4574324 (1986-03-01), Packard
patent: 4979070 (1990-12-01), Bodkin
patent: 5841615 (1998-11-01), Gershen
patent: 5969921 (1999-10-01), Wafer et al.
patent: 6621670 (2003-09-01), Hayakawa et al.
patent: 2003/0189804 (2003-10-01), Kampmeyer
patent: 2003/0198001 (2003-10-01), Lile
patent: 1 439 623 (2004-07-01), None
patent: 2 170 367 (1986-07-01), None
Preliminary Search Report for European Patent Application No. 05 42 5852, dated Jul. 28, 2006.

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