IE810731L - Current interrupter - Google Patents

Current interrupter

Info

Publication number
IE810731L
IE810731L IE810731A IE73181A IE810731L IE 810731 L IE810731 L IE 810731L IE 810731 A IE810731 A IE 810731A IE 73181 A IE73181 A IE 73181A IE 810731 L IE810731 L IE 810731L
Authority
IE
Ireland
Prior art keywords
current interrupter
gb2073969a
digitised
overcurrent
analysed
Prior art date
Application number
IE810731A
Other versions
IE51346B1 (en
Original Assignee
Westinghouse Electric 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
Priority claimed from US06/140,632 external-priority patent/US4377836A/en
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of IE810731L publication Critical patent/IE810731L/en
Publication of IE51346B1 publication Critical patent/IE51346B1/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
    • H02H3/08—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
    • H02H3/10—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 additionally responsive to some other abnormal electrical conditions
    • H02H3/105—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 additionally responsive to some other abnormal electrical conditions responsive to excess current and fault current to earth
    • 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
    • H02H3/093—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 with timing means
    • H02H3/0935—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 with timing means the timing being determined by numerical means

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Solid State Image Pick-Up Elements (AREA)
  • Protection Of Generators And Motors (AREA)

Abstract

In an overcurrent or earth-leakage protective system, the current sensor output is digitised and then analysed in a digital processor 154. <IMAGE> [GB2073969A]
IE731/81A 1980-04-15 1981-03-31 Circuit interrupter with front panel numeric display IE51346B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14063180A 1980-04-15 1980-04-15
US06/140,632 US4377836A (en) 1980-04-15 1980-04-15 Circuit interrupter with solid state digital trip unit and positive power-up feature

Publications (2)

Publication Number Publication Date
IE810731L true IE810731L (en) 1981-10-15
IE51346B1 IE51346B1 (en) 1986-12-10

Family

ID=26838358

Family Applications (1)

Application Number Title Priority Date Filing Date
IE731/81A IE51346B1 (en) 1980-04-15 1981-03-31 Circuit interrupter with front panel numeric display

Country Status (9)

Country Link
AU (1) AU549018B2 (en)
BR (1) BR8102310A (en)
CH (1) CH658755A5 (en)
FR (1) FR2481534B1 (en)
GB (1) GB2073969B (en)
IE (1) IE51346B1 (en)
IT (1) IT1137369B (en)
MX (1) MX154859A (en)
NZ (1) NZ196611A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4446498A (en) * 1982-04-05 1984-05-01 Siemens-Allis, Inc. Electronic control system for overload relay or the like
US4423458A (en) 1982-04-05 1983-12-27 Siemens-Allis, Inc. Signal processing system for overload relay or the like
US4423459A (en) 1982-04-05 1983-12-27 Siemens-Allis, Inc. Solid state circuit protection system and method
US4456871A (en) * 1982-04-05 1984-06-26 Siemens-Allis, Inc. Power supply for electronic control system
US4672501A (en) * 1984-06-29 1987-06-09 General Electric Company Circuit breaker and protective relay unit
FR2578091B1 (en) * 1985-02-25 1988-08-05 Merlin Gerin CIRCUIT BREAKER WITH DIGITAL STATIC TRIGGER PROVIDED WITH A CALIBRATION CIRCUIT
FR2578090B1 (en) * 1985-02-25 1989-12-01 Merlin Gerin CIRCUIT BREAKER WITH DIGITAL STATIC TRIGGER WITH REVERSE TIME TRIGGERING FUNCTION
JPS61207128A (en) * 1985-03-07 1986-09-13 三菱電機株式会社 Anti-time limiting relay
FR2595170B1 (en) * 1986-03-03 1990-03-09 Mors ELECTRONIC ELECTRIC MOTOR PROTECTION METHOD AND DEVICE FOR IMPLEMENTING IT
US4752853A (en) * 1987-02-20 1988-06-21 Westinghouse Electric Corp. Circuit interrupter apparatus with an integral trip curve display
US4827369A (en) * 1987-02-20 1989-05-02 Westinghouse Electric Corp. Circuit interrupter apparatus with a selectable display means
US4809125A (en) * 1987-02-20 1989-02-28 Westinghouse Electric Corp. Circuit interrupter apparatus with a style saving rating plug
JP2604015B2 (en) * 1988-09-09 1997-04-23 日本碍子株式会社 Distribution line monitoring system
JPH0284014A (en) * 1988-09-20 1990-03-26 Ngk Insulators Ltd Distribution line monitoring system
JPH0834705B2 (en) * 1988-11-16 1996-03-29 株式会社大林組 Switch
AT399429B (en) * 1989-06-06 1995-05-26 Gec Alsthom T & D Gmbh ELECTRONIC DEVICE WITH A PLUG UNIT FOR SWITCHING MONITORING OF SWITCHGEAR
US6097192A (en) * 1998-03-05 2000-08-01 General Electric Company Method for initializing short time and groundfault protection heat index accumulators in a trip unit
US8355230B2 (en) 2003-12-08 2013-01-15 Siemens Industry, Inc. Extended instantaneous protection

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2609654B2 (en) * 1976-03-09 1978-01-05 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt DIGITAL OVERCURRENT RELEASE
FR2412079A1 (en) * 1977-12-13 1979-07-13 Electricite De France Electrical power distribution network fault detector - has FET switches with low-pass filter providing blocking signals for isolating circuit at multivibrator output
ES468764A1 (en) * 1978-04-13 1979-10-01 Arteche Instr Sistemas A new delayed action electrical protection device, depending on an adjusted magnitude.
GB2020124B (en) * 1978-04-27 1982-08-25 Tokyo Shibaura Electric Co Overcurrent protection
JPS55127821A (en) * 1979-03-27 1980-10-03 Tokyo Shibaura Electric Co Digital protection relay unit
GB2055263B (en) * 1979-08-10 1983-01-12 Tokyo Shibaura Electric Co Adjusting protective relays
US4319298A (en) * 1979-08-28 1982-03-09 General Electric Company Motor protection device
JPS57500313A (en) * 1980-02-23 1982-02-18

Also Published As

Publication number Publication date
IT8121171A0 (en) 1981-04-14
BR8102310A (en) 1981-12-08
IT1137369B (en) 1986-09-10
NZ196611A (en) 1985-07-31
AU6873281A (en) 1981-10-22
FR2481534A1 (en) 1981-10-30
MX154859A (en) 1987-12-22
AU549018B2 (en) 1986-01-09
IE51346B1 (en) 1986-12-10
CH658755A5 (en) 1986-11-28
GB2073969B (en) 1984-09-26
FR2481534B1 (en) 1986-12-26
GB2073969A (en) 1981-10-21

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Legal Events

Date Code Title Description
MM4A Patent lapsed