[go: up one dir, main page]

WO2009047748A3 - Open circuit in secondary winding protection for current transformers - Google Patents

Open circuit in secondary winding protection for current transformers Download PDF

Info

Publication number
WO2009047748A3
WO2009047748A3 PCT/IL2007/001226 IL2007001226W WO2009047748A3 WO 2009047748 A3 WO2009047748 A3 WO 2009047748A3 IL 2007001226 W IL2007001226 W IL 2007001226W WO 2009047748 A3 WO2009047748 A3 WO 2009047748A3
Authority
WO
WIPO (PCT)
Prior art keywords
secondary winding
open circuit
current transformers
winding protection
linear elements
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.)
Ceased
Application number
PCT/IL2007/001226
Other languages
French (fr)
Other versions
WO2009047748A2 (en
Inventor
Vladimir Gurevich
Anatoly Shkolnik
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.)
ISRAEL ELECTRIC CORP
Original Assignee
ISRAEL 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 ISRAEL ELECTRIC CORP filed Critical ISRAEL ELECTRIC CORP
Priority to PCT/IL2007/001226 priority Critical patent/WO2009047748A2/en
Publication of WO2009047748A2 publication Critical patent/WO2009047748A2/en
Publication of WO2009047748A3 publication Critical patent/WO2009047748A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
    • H02H7/042—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers for current transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Transformers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

Apparatus for continuously protecting current transformers (106) from hazardous voltages due to open circuit in a secondary winding (105), which comprises solid state non-linear elements (103) with voltage dependent conductivity, connected in parallel to t secondary winding output terminal of said current transformer A normally open thermo-bimetal switch (102) is placed with good thermal contact on the non-linear elements
PCT/IL2007/001226 2007-10-11 2007-10-11 Open circuit in secondary winding protection for current transformers Ceased WO2009047748A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IL2007/001226 WO2009047748A2 (en) 2007-10-11 2007-10-11 Open circuit in secondary winding protection for current transformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IL2007/001226 WO2009047748A2 (en) 2007-10-11 2007-10-11 Open circuit in secondary winding protection for current transformers

Publications (2)

Publication Number Publication Date
WO2009047748A2 WO2009047748A2 (en) 2009-04-16
WO2009047748A3 true WO2009047748A3 (en) 2009-09-03

Family

ID=40549688

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2007/001226 Ceased WO2009047748A2 (en) 2007-10-11 2007-10-11 Open circuit in secondary winding protection for current transformers

Country Status (1)

Country Link
WO (1) WO2009047748A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9568535B2 (en) 2011-11-04 2017-02-14 Abb Research Ltd. Methods for detecting an open current transformer
CN103812098B (en) * 2012-11-12 2016-08-03 苏州新宏博智能科技股份有限公司 Second open circuit protector of current mutual inductor
CN104868453B (en) * 2015-04-15 2018-03-02 国家电网公司 Protector of current mutual inductor with remote short messages warning function
FR3047084B1 (en) * 2016-01-22 2018-02-16 Safran Electrical & Power DEVICE FOR MEASURING THE CURRENT CURRENT AGAINST OVERVOLTAGES IN THE EVENT OF OPENING THE CIRCUIT

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466039A (en) * 1982-07-29 1984-08-14 Mcgraw-Edison Company Open circuit current transformer protection circuit
US4583146A (en) * 1984-10-29 1986-04-15 General Electric Company Fault current interrupter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466039A (en) * 1982-07-29 1984-08-14 Mcgraw-Edison Company Open circuit current transformer protection circuit
US4583146A (en) * 1984-10-29 1986-04-15 General Electric Company Fault current interrupter

Also Published As

Publication number Publication date
WO2009047748A2 (en) 2009-04-16

Similar Documents

Publication Publication Date Title
TW200625362A (en) Protection circuit
EP2519873A4 (en) Decentralized system and architecture for remote real time monitoring of power transformer, reactors, circuit breakers, instrument transformers, disconnect switchers and similar high voltage equipment for power plants and electric power substations
TW200719556A (en) Circuit for charging protection
WO2010089338A3 (en) Short-circuit protection device and switching system having such short-circuit protection devices
DE602008002808D1 (en) Battery with a thermal protection circuit
MXPA05006122A (en) Device for protection against surge voltages.
US20240006872A1 (en) Electronic switching protection apparatus
MX2012013696A (en) Electrical switching apparatus with overvoltage protection.
WO2009047748A3 (en) Open circuit in secondary winding protection for current transformers
EP2135099A4 (en) Monitoring system in real time of the state of capacitance graded bushings of power transformers, power reactors, current transformers, circuit breakers and similar
WO2007131762A3 (en) Power circuit with short-circuit protective circuit
TW200744267A (en) Current AC power connecting circuit device
ATE510292T1 (en) ARC PROTECTION MODULE
DE502006008183D1 (en) PROTECTION SYSTEM
WO2009027373A3 (en) Measuring and/or switching device
WO2014032631A3 (en) Design of the triggering circuit of the overvoltage protection
DE602008003210D1 (en) REST OF ELECTRIC DEVICE
KR100726823B1 (en) Outlet with earth leakage blocking function
WO2009121666A3 (en) Compact switchgear for an electrical consumer
AU2001293706A1 (en) Power supply device for low-voltage electronic residual current circuit breakers
WO2010049231A3 (en) Device for feeding a consumer network with the electric power of a supply network
WO2009121752A3 (en) Apparatus for operating a switching device
SI24088B (en) Electric circuit overload protecting device and with integrated electricity consumption meter
WO2013079595A3 (en) Circuit arrangement and method for ascertaining switching times for a dc-dc voltage converter
CN202150690U (en) Protective device of auxiliary power supply

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07827200

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07827200

Country of ref document: EP

Kind code of ref document: A2