Protective device with automated self-test

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8125228
APP PUB NO 20110148423A1
SERIAL NO

12955581

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The present invention is directed to an electrical wiring device that includes at least one sensor that provides a sensor output signal corresponding to electrical perturbations propagating on the plurality of line terminals or the plurality of load terminals. A protective circuit assembly configured to detect a fault condition when the sensor output signal substantially corresponds to at least one predetermined fault criterion and generate a trip actuation signal in response thereto. A solenoid coil is configured to generate a trip actuation force in response to the trip actuation signal. A circuit interrupter assembly includes movable contacts configured to be driven into a tripped state in response to the trip actuation force. An automatic fault simulation circuit is configured to generate a self-test signal without execution of software code. The self-test signal is generated such that it is sensed by the at least one sensor if the at least one sensor is operational. An end-of-life detection circuit is coupled to the protective circuit assembly. The end-of-life detection circuit is configured to monitor the protective circuit assembly without execution of software code. The end-of-life detection circuit is configured to substantially inhibit the trip actuation force when the protective circuit assembly detects the fault condition and generates the trip actuation signal in response to the self-test signal. The end-of-life detection circuit is configured to generate an end-of-life response if the protective circuit assembly does not respond to the self-test signal within a predetermined period of time.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PASS & SEYMOUR, INC.SYRACUSE, NY238

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Finlay,, Sr David A Marietta, US 31 123
Macbeth, Bruce F Syracuse, US 49 1025
Richards, Jeffrey C Baldwinsville, US 46 535

Cited Art Landscape

Patent Info (Count) # Cites Year
 
YAZAKI CORPORATION (1)
6984988 Ground-fault detecting device and insulation resistance measuring device 20 2003
 
GENERAL ELECTRIC COMPANY (3)
4672501 Circuit breaker and protective relay unit 275 1984
6472882 Fail-safe electronic circuit breaker 19 2000
* 2010/0165,520 Method and Apparatus For Tripping Circuit Breaker 6 2008
 
Other [Check patent profile for assignment information] (3)
4998067 Portable test apparatus for low current circuit breakers 15 1989
5960888 Engine fire suppression system 20 1998
6804904 Cotton collection trailer mobile sign 9 2002
 
Pass & Seymar, Inc. (1)
6980005 Circuit protection device with timed negative half-cycle self test 56 2004
 
SQUARE D COMPANY (1)
6313642 Apparatus and method for testing an arcing fault detection system 32 1997
 
X-L Synergy, LLC (1)
6262871 Fail safe fault interrupter 108 1999
 
COOPER TECHNOLOGIES COMPANY (1)
6697237 Conversion of standard class a ground-fault circuit-interrupters, (GFCI), to a class a ground-fault circuit interrupter with open neutral protection 15 2000
 
PASS & SEYMOUR, INC. (4)
* 6421214 Arc fault or ground fault detector with self-test feature 75 2000
6674289 Circuit protection device with half cycle self test 56 2000
6873158 Circuit protection device with half cycle self test 51 2003
7253629 Circuit protection device with grounded neutral half cycle self test 41 2004
 
COOPER WIRING DEVICES, INC. (1)
5638243 Miswiring indicator in ground fault protection devices 28 1996
 
HUANG, HUADAO (1)
6580344 Ground fault interruption receptacle 66 2001
 
LEVITON MANUFACTURING CO., INC. (9)
5600524 Intelligent ground fault circuit interrupter 155 1995
5715125 Intelligent ground fault circuit interrupter 105 1997
6111733 Intelligent ground fault circuit interrupter 95 1998
6040967 Reset lockout for circuit interrupting device 168 1998
6052265 Intelligent ground fault circuit interrupter employing miswiring detection and user testing 135 1998
6437700 Ground fault circuit interrupter 109 2000
2002/0135,957 Neutral switch test mechanism for a circuit interrupter 17 2001
6611406 Ground fault circuit interrupter incorporating miswiring prevention circuitry 37 2001
* 7911746 GFCI with self-test and remote annunciation capabilities 6 2007
 
EATON CORPORATION (1)
5459630 Self testing circuit breaker ground fault and sputtering arc trip unit 178 1993
 
MODELEC S.A. (1)
4742422 Self-monitoring fault current safety switch 31 1986
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
HUBBELL INCORPORATED (2)
9608433 GFCI test monitor circuit 0 2013
9118174 GFCI with voltage level comparison and indirect sampling 0 2013
 
PASS & SEYMOUR, INC. (2)
* 8446151 Protective device 0 2011
* 2012/0140,369 PROTECTIVE DEVICE 2 2011
 
CUMMINS EMISSION SOLUTIONS, INC. (1)
9606092 sensor diagnosis system and method 0 2014
* Cited By Examiner

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