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

Open circuit in secondary winding protection for current transformers Download PDF

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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
Application number
PCT/IL2007/001226
Other languages
French (fr)
Other versions
WO2009047748A2 (en
Inventor
Vladimir Gurevich
Anatoly Shkolnik
Original Assignee
Israel Electric Corporation
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 Corporation filed Critical Israel Electric Corporation
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

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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)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Transformers (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 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 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
WO2013066914A2 (en) * 2011-11-04 2013-05-10 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

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