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ZA200203953B - Detection transformer for an earth leakage protection device and protection device comprising such a transformer. - Google Patents

Detection transformer for an earth leakage protection device and protection device comprising such a transformer.

Info

Publication number
ZA200203953B
ZA200203953B ZA200203953A ZA200203953A ZA200203953B ZA 200203953 B ZA200203953 B ZA 200203953B ZA 200203953 A ZA200203953 A ZA 200203953A ZA 200203953 A ZA200203953 A ZA 200203953A ZA 200203953 B ZA200203953 B ZA 200203953B
Authority
ZA
South Africa
Prior art keywords
transformer
protection device
detection
earth leakage
detection transformer
Prior art date
Application number
ZA200203953A
Inventor
Christelle Juraszek
Simon Tian
Marc Paupert
Original Assignee
Schneider Electric Ind Sa
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 Schneider Electric Ind Sa filed Critical Schneider Electric Ind Sa
Publication of ZA200203953B publication Critical patent/ZA200203953B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G01R15/183—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core
    • G01R15/185—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core with compensation or feedback windings or interacting coils, e.g. 0-flux sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/20—Measuring number of turns; Measuring transformation ratio or coupling factor of windings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Transformers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Regulation Of General Use Transformers (AREA)

Abstract

The detection transformer which is used with excitation and processing units is toroidal and contains the protected conductors. The transformer magnetic circuit is based on iron with crystals which do not exceed 100 nanometers in thickness and has a static or low frequency magnetic cycle (21) which is virtually rectangular. The coercive force (Hc) in the magnetic cycle is preferably less than 1.5 Amperes/meter. An Independent claim is also included for a differential protection equipment which uses the detection transformer and magnetic circuit.
ZA200203953A 2001-05-21 2002-05-17 Detection transformer for an earth leakage protection device and protection device comprising such a transformer. ZA200203953B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0106674A FR2824951B1 (en) 2001-05-21 2001-05-21 DETECTION TRANSFORMER FOR DIFFERENTIAL PROTECTION DEVICE AND PROTECTION DEVICE COMPRISING SUCH A TRANSFORMER

Publications (1)

Publication Number Publication Date
ZA200203953B true ZA200203953B (en) 2002-11-21

Family

ID=8863499

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA200203953A ZA200203953B (en) 2001-05-21 2002-05-17 Detection transformer for an earth leakage protection device and protection device comprising such a transformer.

Country Status (7)

Country Link
EP (1) EP1260821B1 (en)
CN (1) CN1241216C (en)
AT (1) ATE311607T1 (en)
DE (1) DE60207632T2 (en)
ES (1) ES2252413T3 (en)
FR (1) FR2824951B1 (en)
ZA (1) ZA200203953B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2862423B1 (en) * 2003-11-18 2005-12-30 Schneider Electric Ind Sas DEVICE AND METHOD FOR DIFFERENTIAL PROTECTION AND ELECTRICAL APPARATUS COMPRISING SUCH A DEVICE
IT1392716B1 (en) * 2009-01-13 2012-03-16 Seneca S R L METHOD OF MEASUREMENT OF AN ELECTRIC CURRENT
CN102881437A (en) * 2011-07-12 2013-01-16 三信国际电器上海有限公司 Current transformer for detecting aftercurrent, and aftercurrent protection device
DE102013009587A1 (en) * 2012-06-14 2013-12-19 Robert Bosch Gmbh Measuring device for detecting saturation of magnetic core of transformer in direct current static converter, has measuring coil detecting induced voltage, arranged at measuring bridge and formed as winding distributed over bridge length
CN102937682A (en) * 2012-11-29 2013-02-20 东莞市拓诚实业有限公司 Detection equipment and detection method for leakage protector
FR3050081B1 (en) * 2016-04-12 2018-03-23 Schneider Electric Industries Sas DEVICE FOR DETECTING A DEFAULT CURRENT
CN113809716B (en) * 2021-09-25 2023-09-15 浙江巨磁智能技术有限公司 B-type leakage protection method realized by pure hardware
DE102022129457B4 (en) * 2022-11-08 2024-05-29 Bender Gmbh & Co. Kg Electrical circuit arrangement and method for galvanically isolated, universal current sensitive differential current measurement
FR3147377B1 (en) * 2023-03-29 2025-02-28 Chauvin Arnoux Measuring method and single-core loop ohmmeter with AC leakage flux compensation
FR3147376B1 (en) * 2023-03-29 2025-02-28 Chauvin Arnoux Measuring method and single-core loop ohmmeter with DC leakage flux compensation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529931A (en) * 1983-04-07 1985-07-16 Ford Motor Company Single-coil current measuring circuit
US4881989A (en) * 1986-12-15 1989-11-21 Hitachi Metals, Ltd. Fe-base soft magnetic alloy and method of producing same
JP2501860B2 (en) * 1988-03-15 1996-05-29 日立金属株式会社 Magnetic sensor and current sensor, and device using the same
JPH03218475A (en) * 1989-11-06 1991-09-26 Nkk Corp Method and device for measuring current
JPH07128373A (en) * 1993-11-02 1995-05-19 Sumitomo Special Metals Co Ltd Dc current sensor
FR2733374B1 (en) * 1995-04-18 1997-06-06 Schneider Electric Sa DIFFERENTIAL PROTECTION DEVICE SENSITIVE TO PULSED CURRENTS
FR2774822B1 (en) * 1998-02-11 2000-03-17 Schneider Electric Ind Sa DIFFERENTIAL PROTECTION DEVICE

Also Published As

Publication number Publication date
ATE311607T1 (en) 2005-12-15
DE60207632T2 (en) 2006-07-06
CN1387213A (en) 2002-12-25
DE60207632D1 (en) 2006-01-05
FR2824951B1 (en) 2003-07-25
EP1260821A1 (en) 2002-11-27
ES2252413T3 (en) 2006-05-16
EP1260821B1 (en) 2005-11-30
CN1241216C (en) 2006-02-08
FR2824951A1 (en) 2002-11-22

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