CA2243334A1 - A ground fault protection circuit for multiple loads with separate gfci branches and a common neutral for the gfci electronics - Google Patents

A ground fault protection circuit for multiple loads with separate gfci branches and a common neutral for the gfci electronics

Info

Publication number
CA2243334A1
CA2243334A1 CA002243334A CA2243334A CA2243334A1 CA 2243334 A1 CA2243334 A1 CA 2243334A1 CA 002243334 A CA002243334 A CA 002243334A CA 2243334 A CA2243334 A CA 2243334A CA 2243334 A1 CA2243334 A1 CA 2243334A1
Authority
CA
Canada
Prior art keywords
gfci
electronics
ground fault
protection circuit
fault protection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002243334A
Other languages
French (fr)
Other versions
CA2243334C (en
Inventor
David Chan
Paul Gernhardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leviton Manufacturing Co Inc
Original Assignee
Leviton Manufacturing Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Leviton Manufacturing Co Inc filed Critical Leviton Manufacturing Co Inc
Publication of CA2243334A1 publication Critical patent/CA2243334A1/en
Application granted granted Critical
Publication of CA2243334C publication Critical patent/CA2243334C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
    • H02H3/347—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system using summation current transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/334—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control

Abstract

A ground fault protection circuit for plural loads connected across a power source with plural branches which can be used where the loads are unbalanced. Each branch includes a ground fault circuit interrupter device that has a common line for the electronics of the GFCI separate from the neutral line from the power source to the load where the common lines for the electronics for the ground circuit interrupter devices in each branch are connected to a common point. The ground fault protection circuit employs plural ground fault circuit interrupter devices and eliminates nuisance tripping. The common line for the electronics for a GFCI is routed through the core of the current sensing transformer of the GFCI. The separate neutral line for the electronics, connecting the common lines for the electronics for plural GFCI devices and routing the common lines for the GFCI electronics through the core of the transformer of each GFCI, eliminate improper GFCI operation due to unbalanced loading. The ground fault protection circuit may be used for a three phase power source.
CA002243334A 1997-07-23 1998-07-17 A ground fault protection circuit for multiple loads with separate gfci branches and a common neutral for the gfci electronics Expired - Fee Related CA2243334C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/899,129 1997-07-23
US08/899,129 US5786971A (en) 1997-07-23 1997-07-23 Ground fault protection circuit for multiple loads with separate GFCI branches and a common neutral for the GFCI electronics

Publications (2)

Publication Number Publication Date
CA2243334A1 true CA2243334A1 (en) 1999-01-23
CA2243334C CA2243334C (en) 2008-03-18

Family

ID=25410524

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002243334A Expired - Fee Related CA2243334C (en) 1997-07-23 1998-07-17 A ground fault protection circuit for multiple loads with separate gfci branches and a common neutral for the gfci electronics

Country Status (3)

Country Link
US (2) US5786971A (en)
CA (1) CA2243334C (en)
MX (1) MXPA98005956A (en)

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US5786971A (en) * 1997-07-23 1998-07-28 Leviton Manufacturing Co., Inc. Ground fault protection circuit for multiple loads with separate GFCI branches and a common neutral for the GFCI electronics
US5894392A (en) * 1997-08-18 1999-04-13 Hubbell Incorporated Power distribution unit with individual GFI modules and a line supervisory circuit
US6771152B2 (en) * 2001-03-21 2004-08-03 Leviton Manufacturing Co., Inc. Pivot point reset lockout mechanism for a ground for fault circuit interrupter
US6288882B1 (en) * 1998-08-24 2001-09-11 Leviton Manufacturing Co., Inc. Circuit breaker with independent trip and reset lockout
US6437700B1 (en) * 2000-10-16 2002-08-20 Leviton Manufacturing Co., Inc. Ground fault circuit interrupter
US7400477B2 (en) * 1998-08-24 2008-07-15 Leviton Manufacturing Co., Inc. Method of distribution of a circuit interrupting device with reset lockout and reverse wiring protection
US7463124B2 (en) * 1998-08-24 2008-12-09 Leviton Manufacturing Co., Inc. Circuit interrupting device with reverse wiring protection
US6556395B1 (en) * 1999-07-07 2003-04-29 Leviton Manufacturing Co., Inc. Ground fault circuit interrupter for circuits operating with non-sinusoidal waveforms
US20020080535A1 (en) * 2000-12-22 2002-06-27 Swindler David L. Multiple ground fault trip function system and method for same
US6807036B2 (en) 2001-04-26 2004-10-19 Hubbell Incorporated Digital fault interrupter with self-testing capabilities
GB2381968B (en) * 2001-10-22 2005-04-27 Circuit Breaker Ind Circuit breaker
US20030165037A1 (en) * 2002-03-01 2003-09-04 Stephen Liscinksy Three-phase supervisory circuit
CA2428361C (en) * 2002-05-09 2009-04-28 Hubbell Incorporated Gfci that cannot be reset until wired correctly on line side and power is applied
US6788504B2 (en) * 2002-06-26 2004-09-07 General Motors Corporation Mobile electric power supply system with deactivatable GFCI protection
US6949994B2 (en) * 2002-12-30 2005-09-27 Leviton Manufacturing Co., Inc. GFCI without bridge contacts and having means for automatically blocking a face opening of a protected receptacle when tripped
US7944331B2 (en) 2003-02-03 2011-05-17 Leviton Manufacturing Co., Inc. Circuit interrupting device with reverse wiring protection
US7737809B2 (en) * 2003-02-03 2010-06-15 Leviton Manufacturing Co., Inc. Circuit interrupting device and system utilizing bridge contact mechanism and reset lockout
US20070014058A1 (en) * 2003-07-03 2007-01-18 Chan David Y Neutral switch test mechanism for a circuit interrupter
US7733617B2 (en) * 2005-08-08 2010-06-08 Hubbell Incorporated Self testing digital fault interrupter
US7455538B2 (en) * 2005-08-31 2008-11-25 Leviton Manufacturing Co., Inc. Electrical wiring devices with a protective shutter
US7301739B2 (en) * 2005-10-12 2007-11-27 Chevron U.S.A. Inc. Ground-fault circuit-interrupter system for three-phase electrical power systems
US20070109696A1 (en) * 2005-11-14 2007-05-17 Jp Nolan & Company Ground fault circuit interrupt device
CN1988099B (en) * 2005-12-23 2010-05-05 通领科技集团有限公司 Leakage current detection breaker with fire-proof shield
CN1328591C (en) * 2005-12-26 2007-07-25 通领科技集团有限公司 Earth-fault circuit breaker life termination detecting-protecting method and its circuit
CN1328588C (en) * 2005-12-27 2007-07-25 通领科技集团有限公司 Life-stopping intelligent inspection and inspector for leakage protector
CN1328587C (en) * 2005-12-27 2007-07-25 通领科技集团有限公司 Life-stopping intelligent inspection and inspector for leakage protector
CN1319101C (en) * 2005-12-27 2007-05-30 通领科技集团有限公司 Lift stop intelligent detection and detector for leakage protector
CN100349345C (en) * 2006-02-21 2007-11-14 通领科技集团有限公司 Intelligent detecting method and appliance for service stop of electricity leakage protector
CN1321430C (en) * 2006-03-06 2007-06-13 通领科技集团有限公司 Earthing fault breaker actuator having pressure balance auto compensation
US7626788B2 (en) * 2006-07-24 2009-12-01 Suzhou Songbao Electric Co., Ltd. Control circuit of ground fault circuit interrupter (GFCI)
EP2087365A4 (en) * 2006-10-27 2011-12-07 Outsmart Power Systems Llc Apparatus and method for mapping a wired network
US7804255B2 (en) 2007-07-26 2010-09-28 Leviton Manufacturing Company, Inc. Dimming system powered by two current sources and having an operation indicator module
US8098465B1 (en) 2008-03-28 2012-01-17 Reliance Controls Corporation AFCI breaker providing protection for multiple branch circuits in an electrical panel
WO2009137817A1 (en) * 2008-05-08 2009-11-12 Outsmart Power Systems Llc Device and method for measuring current and power in a plug or receptacle
CA2730014C (en) 2008-07-07 2017-02-28 Michael Kamor Fault circuit interrupter device
AU2009273941A1 (en) * 2008-07-23 2010-01-28 Outsmart Power Systems, Llc Providing additional electrical functionality to a node
AU2009289395C1 (en) * 2008-09-05 2016-11-10 Outsmart Power Systems, Llc Apparatus and methods for mapping a wired network
US8259423B2 (en) 2009-07-14 2012-09-04 Ford Global Technologies, Llc Automotive vehicle charge port with fault interrupt circuit
US8444309B2 (en) 2010-08-13 2013-05-21 Leviton Manufacturing Company, Inc. Wiring device with illumination
FR2964506B1 (en) 2010-09-08 2012-08-31 Renault Sa DEVICE AND METHOD FOR LIMITING LEAKAGE CURRENTS
CA2817772A1 (en) 2010-11-12 2012-05-18 Outsmart Power Systems, Llc Maintaining information integrity while minimizing network utilization of accumulated data in a distributed network
US8526144B2 (en) 2011-03-31 2013-09-03 Leviton Manufacturing Company, Inc. Reset lockout with grounded neutral test
US8988837B2 (en) * 2012-06-08 2015-03-24 Hamilton Sundstrand Corporation Power distribution system incorporating ground fault interrupt protection
CA3161944A1 (en) * 2019-11-15 2021-05-20 Hubbell Incorporated Circuit interrupting device for providing ground fault and open neutral protection in temporary power applications
US11811173B2 (en) * 2022-02-28 2023-11-07 Avellina Enterprises, LLC Electrical power cord with inline ground fault circuit interrupter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953767A (en) * 1974-04-15 1976-04-27 Rca Corporation Ground fault detection apparatus
US3895263A (en) * 1974-08-27 1975-07-15 Ite Imperial Corp Grounded neutral detector drive circuit for two pole ground fault interrupter
US3949272A (en) * 1974-11-19 1976-04-06 General Electric Company Ground-fault protective scheme for multiple-source electric distribution system
US4015169A (en) * 1975-03-14 1977-03-29 Westinghouse Electric Corporation Two pole ground fault circuit interrupter with improved rectified supply and transient suppression for a trip circuit
US4110808A (en) * 1977-09-02 1978-08-29 General Electric Company Ground fault protection system for multiple source distribution networks
EP0495771B1 (en) * 1991-01-16 1997-01-02 Felten & Guilleaume Austria Ag Fault-current protective switch
US5786971A (en) * 1997-07-23 1998-07-28 Leviton Manufacturing Co., Inc. Ground fault protection circuit for multiple loads with separate GFCI branches and a common neutral for the GFCI electronics

Also Published As

Publication number Publication date
US6021034A (en) 2000-02-01
CA2243334C (en) 2008-03-18
US5786971A (en) 1998-07-28
MXPA98005956A (en) 2004-09-06

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20150717