DE3164945D1 - Fault current detecting circuit - Google Patents

Fault current detecting circuit

Info

Publication number
DE3164945D1
DE3164945D1 DE8181101077T DE3164945T DE3164945D1 DE 3164945 D1 DE3164945 D1 DE 3164945D1 DE 8181101077 T DE8181101077 T DE 8181101077T DE 3164945 T DE3164945 T DE 3164945T DE 3164945 D1 DE3164945 D1 DE 3164945D1
Authority
DE
Germany
Prior art keywords
detecting circuit
current detecting
fault current
fault
circuit
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.)
Expired
Application number
DE8181101077T
Other languages
English (en)
Inventor
Anthony Rice
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE3164945D1 publication Critical patent/DE3164945D1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or 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
    • H02H3/006—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
    • H02H3/08—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 excess current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)
DE8181101077T 1980-04-10 1981-02-16 Fault current detecting circuit Expired DE3164945D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8008341A FR2485284A1 (fr) 1980-04-10 1980-04-10 Circuit de detection de courant de defaut

Publications (1)

Publication Number Publication Date
DE3164945D1 true DE3164945D1 (en) 1984-08-30

Family

ID=9240842

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181101077T Expired DE3164945D1 (en) 1980-04-10 1981-02-16 Fault current detecting circuit

Country Status (6)

Country Link
US (1) US4375072A (de)
EP (1) EP0037885B1 (de)
JP (1) JPS56154672A (de)
CA (1) CA1165396A (de)
DE (1) DE3164945D1 (de)
FR (1) FR2485284A1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123627A (en) * 1982-04-08 1984-02-01 David Alan Dolbey Jones Electrical circuit interruption
US4625283A (en) * 1982-05-07 1986-11-25 Cooper Industries, Inc. Method and apparatus for digitally measuring alternating current
US4677581A (en) * 1985-05-30 1987-06-30 Allied Corporation Multichannel, self-calibrating, analog input/output apparatus for generating and measuring DC stimuli
US4720758A (en) * 1985-07-26 1988-01-19 Tektronix, Inc. Load dependent current limiter for the power supply of a multi-module electronic system
EP0211507A1 (de) * 1985-07-26 1987-02-25 Tektronix, Inc. Lastabhängiger Strombegrenzer für die Energieversorgung eines elektronischen Mehrmodulsystems
US4713553A (en) * 1985-10-21 1987-12-15 Motorola Inc. Fast power-fail detector for power supplies with energy hysteresis
US4796142A (en) * 1986-10-16 1989-01-03 Square D Company Overload protection apparatus for emulating the response of a thermal overload
IT1219951B (it) * 1988-05-31 1990-05-24 Giancarlo Sacerdoti Dispositivo di sicurezza per la rilevazione della corrente di terra e spina elettrica di sicurezza dotata di tale dispositivo
EP0370139B1 (de) * 1988-11-22 1993-09-15 Mitsubishi Denki Kabushiki Kaisha Schalter mit Ueberstromschutz
DE3841186A1 (de) * 1988-12-07 1990-06-13 Asea Brown Boveri Einrichtung fuer elektrische verbraucher
US5272585A (en) * 1991-06-27 1993-12-21 Gibbs John H System to prevent electrical shorts by a microprocessor breaker box
US5506789A (en) * 1993-10-15 1996-04-09 The Texas A & M University System Load extraction fault detection system
JP3233557B2 (ja) * 1995-07-21 2001-11-26 シャープ株式会社 半導体集積回路の閾値特性測定方法および装置
CN101661055B (zh) * 2008-08-27 2011-07-13 中兴通讯股份有限公司 一种有源电路电流告警的方法及装置
EP2241344B1 (de) 2009-04-16 2013-12-11 F. Hoffmann-La Roche AG Tragbare Infusionsvorrichtung mit Sensortesteinheit
EP2282175A3 (de) * 2009-08-06 2011-10-19 Yokogawa Electric Corporation Messvorrichtung
CN102074928B (zh) * 2009-11-20 2015-01-14 北京普源精电科技有限公司 一种恒压恒流电源及其过压、过流保护的自校准方法
CN102681531B (zh) * 2012-05-10 2014-02-05 四川金网通电子科技有限公司 一种实现电机控制器限流电流值自校准的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626262A (en) * 1969-08-22 1971-12-07 Gen Electric No-load torque compensation system and the application thereof in adaptive control
US3979255A (en) * 1973-09-04 1976-09-07 Combustion Engineering, Inc. Method for operating a system with a variable excursion margin setpoint
US4012669A (en) * 1975-08-29 1977-03-15 Envirotech Corporation Electronic overload detecting device
US4208625A (en) * 1976-02-23 1980-06-17 Micro Sensors, Inc. Capacitive measuring system with automatic calibration
DE2609654B2 (de) * 1976-03-09 1978-01-05 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Digitaler ueberstromausloeser
US4160282A (en) * 1977-10-03 1979-07-03 Consolidation Coal Company Overcurrent protection apparatus

Also Published As

Publication number Publication date
JPS56154672A (en) 1981-11-30
FR2485284A1 (fr) 1981-12-24
US4375072A (en) 1983-02-22
EP0037885B1 (de) 1984-07-25
CA1165396A (en) 1984-04-10
EP0037885A1 (de) 1981-10-21
JPH05666B2 (de) 1993-01-06

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee