System and method for circuit overcurrent protection

Details System and method for circuit overcurrent protection System and method for circuit overcurrent protection

2007-01-05

2011-10-04

Fureman, Jared (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

C361S042000

Reexamination Certificate

active

08031455

ABSTRACT:
In one aspect, the invention provides a system for protecting a plurality of circuits including a plurality of circuit protective devices wherein each circuit protective device includes a respective nominal current rating. According to one embodiment, the system includes current sensing circuitry configured to measure a current of each circuit protective device; and a controller configured to receive each of the measured currents. According to one embodiment, the controller is further configured to determine a ratio between a total current being carried by all of the circuit protective devices combined and a total nominal current rating of all of the circuit protective devices combined and employ the ratio to determine a modified nominal current rating of each circuit protective device, respectively. In a further embodiment, the controller is configured to generate an output signal to isolate a selected circuit selected from among the plurality of circuits based on the modified nominal current rating of the circuit protective device included in the selected circuit.

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patent: 2007/0103833 (2007-05-01), Harris, IV
International Search Report and Written Opinion from corresponding International Application No. PCT/US2008/050134 dated Jul. 15, 2008.

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