BE903181A - RESIDUAL INTENSITY DETECTOR - Google Patents

RESIDUAL INTENSITY DETECTOR

Info

Publication number
BE903181A
BE903181A BE2/60784A BE2060784A BE903181A BE 903181 A BE903181 A BE 903181A BE 2/60784 A BE2/60784 A BE 2/60784A BE 2060784 A BE2060784 A BE 2060784A BE 903181 A BE903181 A BE 903181A
Authority
BE
Belgium
Prior art keywords
intensity detector
output signal
residual intensity
pulse
actuated
Prior art date
Application number
BE2/60784A
Other languages
French (fr)
Inventor
P J Ward
Original Assignee
Atreus Entpr Ltd
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 Atreus Entpr Ltd filed Critical Atreus Entpr Ltd
Publication of BE903181A publication Critical patent/BE903181A/en

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
    • H02H3/332—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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

Un détecteur d'intensité résiduelle (20) amélioré comprend un organe disjoncteur (36) actionné par un dispositif activé par une impulsion (Q1). Il y a un circuit (27) avec une bobine détectrice (24) pour détecter un déséquilibre d'intensité dans les deux conducteurs (21, 22) et pour produire un signal de sortie en réponse à celui-ci. Le signal de sortie est transmis au dispositif actionné par impulsion via un amplificateur inverseur (29), un atténuateur (30), un amplificateur à gain élevé (31) et un filtre (32).An improved residual current detector (20) includes a circuit breaker (36) actuated by a device activated by a pulse (Q1). There is a circuit (27) with a sense coil (24) for detecting an intensity imbalance in the two conductors (21, 22) and for producing an output signal in response thereto. The output signal is transmitted to the pulse actuated device via an inverting amplifier (29), an attenuator (30), a high gain amplifier (31) and a filter (32).

BE2/60784A 1985-01-29 1985-09-05 RESIDUAL INTENSITY DETECTOR BE903181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE214/85A IE56011B1 (en) 1985-01-29 1985-01-29 Improved residual current device

Publications (1)

Publication Number Publication Date
BE903181A true BE903181A (en) 1985-12-31

Family

ID=11008781

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2/60784A BE903181A (en) 1985-01-29 1985-09-05 RESIDUAL INTENSITY DETECTOR

Country Status (3)

Country Link
BE (1) BE903181A (en)
GB (1) GB2170367B (en)
IE (1) IE56011B1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1247630B (en) * 1990-11-08 1994-12-28 Zanussi Elettrodomestici DIFFERENTIAL TYPE ELECTRONIC SAFETY DEVICE FOR HOUSEHOLD APPLIANCES
GB9109477D0 (en) * 1991-05-02 1991-06-26 Mk Electric Ltd Electrical protection devices
DE59812965D1 (en) * 1998-09-18 2005-09-01 Siemens Ag Residual current device with bipolar signal conditioning
DE10162255B4 (en) * 2001-12-18 2007-08-16 Siemens Ag Residual current protection device
EP1793465A1 (en) * 2005-11-30 2007-06-06 STMicroelectronics S.r.l. Electronic differential switch
CN102013362B (en) * 2010-11-10 2013-07-17 浙江德隆电器有限公司 High-safety automatic resetting breaker
CN103247489B (en) * 2013-05-16 2015-11-04 天津市百利电气有限公司 The circuit breaker electronic release of no ground current sample Special mutual-inductor
CN110850219B (en) * 2019-11-28 2023-06-27 珠海格力电器股份有限公司 Fault detection circuit, fault detection method and refrigerating equipment

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091431A (en) * 1967-02-13 1978-05-23 Harbey Hubbell, Incorporated Ground leakage relay circuit
US3879639A (en) * 1973-01-04 1975-04-22 Federal Pacific Electric Co Ground fault interrupters
US4216515A (en) * 1973-03-28 1980-08-05 Eaton Corporation Ground fault interrupter
US3978400A (en) * 1974-11-25 1976-08-31 Square D Company Ground fault detector with a nonlinear sensing means
US4080641A (en) * 1976-07-12 1978-03-21 Rca Corporation Ground fault detector
US4080640A (en) * 1976-09-27 1978-03-21 Westinghouse Electric Corporation People-protecting ground fault circuit interrupter
US4247879A (en) * 1978-04-19 1981-01-27 Westinghouse Electric Corp. People protecting ground fault circuit breaker utilizing waveform characteristics
FR2481851A1 (en) * 1980-04-30 1981-11-06 Merlin Gerin DEVICE FOR DIFFERENTIAL PROTECTION SENSITIVE TO A UNIDIRECTIONAL CURRENT
US4353103A (en) * 1981-04-08 1982-10-05 Whitlow George A Ground fault interrupter circuit

Also Published As

Publication number Publication date
IE56011B1 (en) 1991-03-13
IE850214L (en) 1986-07-29
GB8602064D0 (en) 1986-03-05
GB2170367B (en) 1988-05-18
GB2170367A (en) 1986-07-30

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: ATREUS ENTERPRISES LTD

Effective date: 19920930