ITRM930380A0 - Interruttore di circuito per utenze elettriche in caso di difetti di messa a terra. - Google Patents

Interruttore di circuito per utenze elettriche in caso di difetti di messa a terra.

Info

Publication number
ITRM930380A0
ITRM930380A0 IT93RM380A ITRM930380A ITRM930380A0 IT RM930380 A0 ITRM930380 A0 IT RM930380A0 IT 93RM380 A IT93RM380 A IT 93RM380A IT RM930380 A ITRM930380 A IT RM930380A IT RM930380 A0 ITRM930380 A0 IT RM930380A0
Authority
IT
Italy
Prior art keywords
earthing
defects
case
circuit breaker
electrical consumptions
Prior art date
Application number
IT93RM380A
Other languages
English (en)
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 filed Critical
Publication of ITRM930380A0 publication Critical patent/ITRM930380A0/it
Publication of ITRM930380A1 publication Critical patent/ITRM930380A1/it
Application granted granted Critical
Publication of IT1261708B publication Critical patent/IT1261708B/it

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
    • H02H3/33—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
    • H02H3/335—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 the main function being self testing of the device
    • 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
    • H02H3/338—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 also responsive to wiring error, e.g. loss of neutral, break
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/06—Arrangements for supplying operative power
    • 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
    • H02H3/006—Calibration or setting of parameters
    • 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
    • H02H3/332—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 responsive to dc component in the fault current
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Rectifiers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
ITRM930380A 1992-07-22 1993-06-09 Interruttore di circuito per utenze elettriche in caso di difetti di messa a terra. IT1261708B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91866492A 1992-07-22 1992-07-22

Publications (3)

Publication Number Publication Date
ITRM930380A0 true ITRM930380A0 (it) 1993-06-09
ITRM930380A1 ITRM930380A1 (it) 1994-12-09
IT1261708B IT1261708B (it) 1996-05-29

Family

ID=25440754

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM930380A IT1261708B (it) 1992-07-22 1993-06-09 Interruttore di circuito per utenze elettriche in caso di difetti di messa a terra.

Country Status (7)

Country Link
US (1) US6381113B1 (it)
JP (1) JPH0676727A (it)
CA (1) CA2093061C (it)
DE (1) DE4317270A1 (it)
FR (1) FR2694142B1 (it)
GB (1) GB2269064B (it)
IT (1) IT1261708B (it)

Families Citing this family (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4412305A1 (de) * 1994-04-09 1995-10-12 Rainer Dipl Phys Berthold Sich selbsttätig überwachender Fehlerstromschutzschalter
FR2774822B1 (fr) * 1998-02-11 2000-03-17 Schneider Electric Ind Sa Dispositif de protection differentielle
US6025980A (en) * 1998-08-10 2000-02-15 General Electric Company Earth leakage protective relay
US6288882B1 (en) * 1998-08-24 2001-09-11 Leviton Manufacturing Co., Inc. Circuit breaker with independent trip and reset lockout
US7463124B2 (en) * 1998-08-24 2008-12-09 Leviton Manufacturing Co., Inc. Circuit interrupting device with reverse wiring protection
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
US6771152B2 (en) * 2001-03-21 2004-08-03 Leviton Manufacturing Co., Inc. Pivot point reset lockout mechanism for a ground for fault circuit interrupter
US6437700B1 (en) * 2000-10-16 2002-08-20 Leviton Manufacturing Co., Inc. Ground fault circuit interrupter
FR2785462B1 (fr) * 1998-10-30 2000-12-15 Schneider Electric Ind Sa Dispositif de protection differentielle comportant un circuit test multitension
DE19938315A1 (de) * 1999-08-12 2001-03-15 Moeller Gmbh Stromerfassungseinrichtung
GB2366676A (en) * 2000-03-22 2002-03-13 Shakira Ltd Residual current device
EP1150412A1 (de) * 2000-04-25 2001-10-31 Siemens Aktiengesellschaft Fehlerstrom-Schutzschalter und Verfahren zum Überprüfen der Funktionsfähigkeit eines Fehlerstrom-Schutzschalters
US6697237B2 (en) * 2000-12-13 2004-02-24 Cooper Industries, Inc. Conversion of standard class a ground-fault circuit-interrupters, (GFCI), to a class a ground-fault circuit interrupter with open neutral protection
GB2377834B (en) * 2001-05-31 2003-09-17 Shakira Ltd Residual current device
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
US6961226B2 (en) * 2002-11-12 2005-11-01 General Electric Company Method and system for providing power to circuit breakers
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
JP4264817B2 (ja) * 2003-11-27 2009-05-20 富士電機機器制御株式会社 漏電遮断器
US20050243485A1 (en) * 2004-04-26 2005-11-03 Gershen Bernard J Leakage current detection interrupter with open neutral detection
US7440246B2 (en) * 2004-10-15 2008-10-21 Leviton Manufacturing Co., Inc. Circuit interrupting apparatus with remote test and reset activation
US20090212967A1 (en) * 2004-10-15 2009-08-27 Leviton Manufacturing Company, Inc Circuit Interrupting System with Remote Test And Reset Activation
US20060198067A1 (en) * 2004-12-30 2006-09-07 Pearse James N Extension cord having open neutral during fault detection trip
US7623329B2 (en) * 2005-01-04 2009-11-24 Technology Research Corporation Leakage current detection and interruption circuit with improved shield
CN101138139A (zh) * 2005-01-04 2008-03-05 科技研究公司 漏电流检测和中断电路
DE102005034645B4 (de) * 2005-07-25 2007-08-02 Siemens Ag Fehlerstromschutzschalter für unterschiedliche Betriebsfrequenzen
US7455538B2 (en) * 2005-08-31 2008-11-25 Leviton Manufacturing Co., Inc. Electrical wiring devices with a protective shutter
CN1988099B (zh) * 2005-12-23 2010-05-05 通领科技集团有限公司 带防火屏蔽线的漏电流检测断路器
CN1328591C (zh) * 2005-12-26 2007-07-25 通领科技集团有限公司 接地故障断路器寿命终止检测保护方法及其电路
CN1328587C (zh) * 2005-12-27 2007-07-25 通领科技集团有限公司 漏电保护装置寿命终止智能检测方法以及设备
CN1328588C (zh) * 2005-12-27 2007-07-25 通领科技集团有限公司 漏电保护装置寿命终止智能检测方法及其设备
CN1319101C (zh) * 2005-12-27 2007-05-30 通领科技集团有限公司 漏电保护装置寿命终止智能检测方法及其设备
CN100349345C (zh) * 2006-02-21 2007-11-14 通领科技集团有限公司 漏电保护装置寿命终止智能检测方法及其设备
CN1321430C (zh) * 2006-03-06 2007-06-13 通领科技集团有限公司 具有压力平衡自动补偿的接地故障断路器动作机构
US7423854B2 (en) 2006-07-07 2008-09-09 Technology Research Corporation Interruption circuit with improved shield
EP2062279A1 (de) * 2006-09-13 2009-05-27 MTU Aero Engines GmbH Wechselstromschalter-vorrichtung und verfahren zur überwachung oder diagnose der funktionsfähigkeit einer wechselstromschalter-vorrichtung
US7834560B2 (en) * 2007-07-26 2010-11-16 Leviton Manufacturing Co., Inc. Dimming system powered by two current sources and having an operation indicator module
CN103474300B (zh) * 2008-07-07 2016-03-09 立维腾制造有限公司 一种故障电路断路器
US8659857B2 (en) * 2008-07-24 2014-02-25 Technology Reasearch Corporation Leakage current detection and interruption circuit powered by leakage current
DE102008037830A1 (de) * 2008-08-14 2010-02-25 Siemens Aktiengesellschaft Fehlerstromerfassungsgerät
US8810983B2 (en) * 2009-04-01 2014-08-19 Asco Power Technologies, L.P. Power disconnect system and method
JP5428505B2 (ja) 2009-04-30 2014-02-26 サンスター技研株式会社 フローティングブレーキディスクの組立方法
US8405939B2 (en) * 2010-03-08 2013-03-26 Pass & Seymour, Inc. Protective device for an electrical supply facility
US8289664B2 (en) * 2010-03-08 2012-10-16 Pass & Seymour, Inc. Protective device for an electrical supply facility
US9948087B2 (en) 2010-03-08 2018-04-17 Pass & Seymour, Inc. Protective device for an electrical supply facility
US8335062B2 (en) * 2010-03-08 2012-12-18 Pass & Seymour, Inc. Protective device for an electrical supply facility
AT509839A3 (de) 2010-04-14 2018-12-15 Eaton Gmbh Fehlerstromschutzschalter
US8444309B2 (en) 2010-08-13 2013-05-21 Leviton Manufacturing Company, Inc. Wiring device with illumination
US8526144B2 (en) 2011-03-31 2013-09-03 Leviton Manufacturing Company, Inc. Reset lockout with grounded neutral test
US8941956B2 (en) 2011-07-26 2015-01-27 Railpower, Llc Switching ground tether circuit
US8749929B1 (en) 2012-12-17 2014-06-10 Eaton Corporation Circuit interrupter providing ground fault protection and system including the same
DE102014223287A1 (de) 2014-11-14 2016-05-19 Bender Gmbh & Co. Kg Elektrische Schutzeinrichtung und Verfahren zur selektiven Abschaltung eines Subsystems bei einem zweiten Fehler in einem IT-Stromversorgungssystem
CN109755921A (zh) * 2017-11-08 2019-05-14 苏州益而益电器制造有限公司 接地故障断路器
US10725116B2 (en) * 2018-01-04 2020-07-28 Rockwell Automation Technologies, Inc. Automatic system grounding condition detection
KR20230118893A (ko) * 2020-12-08 2023-08-14 에스 앤드 시이 일렉트릭 캄파니 피크 고장 전류의 신속-검출을 위한 방법
CN112415429B (zh) * 2021-01-25 2021-05-18 南京安富电力科技有限公司 中压接地故障智能诊断仪
US11626720B1 (en) * 2022-05-20 2023-04-11 Neilsen-Kuljian, Inc. Multiphase ground fault circuit interrupter

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1107879A (en) * 1964-04-17 1968-03-27 J A Crabtree Proprietary Ltd Improvements in or relating to earth leakage protection devices
US3806764A (en) * 1973-01-02 1974-04-23 Gen Electric Ground fault responsive protection system
US4216515A (en) * 1973-03-28 1980-08-05 Eaton Corporation Ground fault interrupter
US4068276A (en) * 1976-07-14 1978-01-10 Interelectronics Corporation Protective system for electrical appliances
NL176508C (nl) * 1977-06-14 1985-04-16 Hazemeijer Bv Voedingsapparaat voor een beveiligingsinrichting, zoals een aardlekdetectie-inrichting, benevens met een dergelijk voedingsapparaat uitgeruste beveiligingsinrichting.
US4233640A (en) * 1979-03-26 1980-11-11 General Electric Company Ground fault apparatus and protection system
DE3230557A1 (de) * 1982-08-17 1984-02-23 Siemens AG, 1000 Berlin und 8000 München Fehlerstromschutzschalter
FR2549287B1 (fr) * 1983-07-13 1988-07-29 Etude Realisation Disjoncteurs Dispositif pour disjoncteur differentiel de maintien de la protection en cas de coupure de neutre
US4578732A (en) * 1983-12-14 1986-03-25 Square D Company Ground fault circuit interrupter including snap-acting contacts
GB2162708B (en) * 1984-07-27 1988-12-14 Technology Res Corp Ground fault current interrupter circuit with open neutral, and ground lead protection
US4598331A (en) * 1984-07-30 1986-07-01 Technology Research Corporation Ground fault current interrupter circuit with open neutral and ground lead protection
US4851950A (en) * 1987-06-09 1989-07-25 Bassani Ticino, S.P.A. Electrical apparatus for magnetothermal and differential protection
US4833564A (en) * 1987-09-24 1989-05-23 Siemens Energy & Automation, Inc. Current sensing relay circuit with adjustable sensitivity and tracking test circuit
IE880341L (en) * 1988-02-08 1989-08-08 Patrick Ward Ground fault current interrupter circuit
US4931893A (en) * 1989-04-19 1990-06-05 Square D Company Loss of neutral or ground protection circuit
US4994933A (en) * 1989-04-19 1991-02-19 Square D Company Ground fault circuit interrupter having loss of neutral or loss of ground protection
US4933801A (en) * 1989-04-19 1990-06-12 Square D Company Ground fault circuit interrupter
DE4010424A1 (de) * 1990-03-31 1991-10-02 Hilti Ag Fehlerstrom-schutzeinrichtung
GB2244398B (en) * 1990-05-25 1994-03-16 Mk Electric Ltd Electrical protection devices
AU8529591A (en) * 1990-08-27 1992-03-17 Power Management International Solid state circuit interrupter and circuit breaker
EP0522187A1 (de) * 1991-07-08 1993-01-13 Siemens Aktiengesellschaft Fehlerstromschutzschalter

Also Published As

Publication number Publication date
GB2269064A (en) 1994-01-26
DE4317270A1 (de) 1994-01-27
GB2269064B (en) 1997-01-29
FR2694142B1 (fr) 2004-10-01
ITRM930380A1 (it) 1994-12-09
US6381113B1 (en) 2002-04-30
JPH0676727A (ja) 1994-03-18
CA2093061C (en) 2005-02-15
CA2093061A1 (en) 1994-01-23
FR2694142A1 (fr) 1994-01-28
IT1261708B (it) 1996-05-29
GB9314619D0 (en) 1993-08-25

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Legal Events

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0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960507