JPS6485519A - Fault indicator - Google Patents

Fault indicator

Info

Publication number
JPS6485519A
JPS6485519A JP62053623A JP5362387A JPS6485519A JP S6485519 A JPS6485519 A JP S6485519A JP 62053623 A JP62053623 A JP 62053623A JP 5362387 A JP5362387 A JP 5362387A JP S6485519 A JPS6485519 A JP S6485519A
Authority
JP
Japan
Prior art keywords
current transformer
delay circuit
transistor
zero
grounding
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.)
Pending
Application number
JP62053623A
Other languages
Japanese (ja)
Inventor
Minoru Nakahata
Nobuyuki Orito
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi 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
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62053623A priority Critical patent/JPS6485519A/en
Priority to KR870011238A priority patent/KR880006815A/en
Priority to GB8726268A priority patent/GB2198001B/en
Priority to DE3738493A priority patent/DE3738493C2/en
Publication of JPS6485519A publication Critical patent/JPS6485519A/en
Priority to KR2019910001092U priority patent/KR910001815Y1/en
Pending legal-status Critical Current

Links

Classifications

    • Y04S10/522—

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PURPOSE:To prevent an error action from being generated, by providing an input section working with a current transformer or a zero-phase current transformer, with a delay circuit, and by setting a timer unit for performing an automatic reset action. CONSTITUTION:An indicator for detecting and indicating the accidents of the grounding, short-circuiting, and the like of an electric system is composed of a short-circuit detecting coil 1 connected to a current transformer 2, a grounding detecting coil 3 connected to a zero-phase current transformer 4, ordinary opening contacts 5, 7, and the like. In this case, a limiting resistor 39 is connected to voltage-dividing resistors 40-41 in series, and is connected to a control power source PN via the first contact 5. A capacitor 42 for composing a delay circuit is set in parallel with the voltagedividing resistors 40-41, and is connected to the base of a transistor 44 via a Zener diode 43. Then, to the transistor 44, an auxiliary relay 45 is connected, and electromagnetic state retaining type flag indicators 28, 29 are respectively provided with working coils 28S, 29S and reset coils 28R, 29R. As this result, said delay circuit prevents the error action of an input section from being generated by surge and noise.
JP62053623A 1986-11-12 1987-03-09 Fault indicator Pending JPS6485519A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP62053623A JPS6485519A (en) 1987-03-09 1987-03-09 Fault indicator
KR870011238A KR880006815A (en) 1986-11-12 1987-10-10 Fault section detection device
GB8726268A GB2198001B (en) 1986-11-12 1987-11-10 Fault section finding apparatus
DE3738493A DE3738493C2 (en) 1986-11-12 1987-11-12 Fault location device
KR2019910001092U KR910001815Y1 (en) 1987-03-09 1991-01-26 Emergency protective circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62053623A JPS6485519A (en) 1987-03-09 1987-03-09 Fault indicator

Publications (1)

Publication Number Publication Date
JPS6485519A true JPS6485519A (en) 1989-03-30

Family

ID=12948034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62053623A Pending JPS6485519A (en) 1986-11-12 1987-03-09 Fault indicator

Country Status (1)

Country Link
JP (1) JPS6485519A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5105307A (en) * 1988-11-04 1992-04-14 Fuji Electrochemical Co., Ltd. Optical isolator
US5111189A (en) * 1989-11-27 1992-05-05 Sigma Instruments, Inc. Fault indicator with timing control
US6674334B1 (en) 1999-12-02 2004-01-06 Seiko Epson Corporation Oscillator having surface acoustic wave resonator and oscillation circuit
CN106655128A (en) * 2016-12-27 2017-05-10 国网浙江省电力公司 Partial power off control system of distribution network and distribution network system
CN106711974A (en) * 2016-12-27 2017-05-24 国网浙江省电力公司 Local power failure control system for power distribution network, and power distribution network system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55120320A (en) * 1979-03-09 1980-09-16 Mitsubishi Electric Corp Protecting relay control power supply circuit
JPS5741429B2 (en) * 1979-06-29 1982-09-02
JPS61167333A (en) * 1985-01-18 1986-07-29 エナジーサポート株式会社 Control circuit for signal transmitting-in type short-circuit and grounding detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55120320A (en) * 1979-03-09 1980-09-16 Mitsubishi Electric Corp Protecting relay control power supply circuit
JPS5741429B2 (en) * 1979-06-29 1982-09-02
JPS61167333A (en) * 1985-01-18 1986-07-29 エナジーサポート株式会社 Control circuit for signal transmitting-in type short-circuit and grounding detector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5105307A (en) * 1988-11-04 1992-04-14 Fuji Electrochemical Co., Ltd. Optical isolator
US5111189A (en) * 1989-11-27 1992-05-05 Sigma Instruments, Inc. Fault indicator with timing control
US6674334B1 (en) 1999-12-02 2004-01-06 Seiko Epson Corporation Oscillator having surface acoustic wave resonator and oscillation circuit
CN106655128A (en) * 2016-12-27 2017-05-10 国网浙江省电力公司 Partial power off control system of distribution network and distribution network system
CN106711974A (en) * 2016-12-27 2017-05-24 国网浙江省电力公司 Local power failure control system for power distribution network, and power distribution network system

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