Electrical wiring device with protective features

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10804693
APP PUB NO 20170331276A1
SERIAL NO

15668087

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention is directed to an electrical wiring device that includes an automatic test circuit configured to commence an automatic test at a predetermined time such that a test current propagates on a test conductor. The sensor assembly provides a sensor test output responsive to the test current only if both the differential transformer and the grounded neutral transformer are operative. A fault detector circuit is configured to generate a test detection signal in response to the sensor test output only if the fault detector circuit is operable and the at least one power supply is substantially charged. A device integrity evaluation circuit includes a timer that effects a tripped state when a time measurement exceeds a threshold, the test detection signal resetting the time measurement when properly wired before the time measurement exceeds the predetermined threshold but does not reset the time measurement when miswired.

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Patent Owner(s)

  • PASS & SEYMOUR, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McMahon, Michael F East Syracuse, US 9 13
Morgan, Kent R Groton, US 29 453

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