EP0509936A3 - Homopolar transformer with magnetic circuit insensitive to mechanical stresses, and manufacturing method - Google Patents

Homopolar transformer with magnetic circuit insensitive to mechanical stresses, and manufacturing method Download PDF

Info

Publication number
EP0509936A3
EP0509936A3 EP19920420074 EP92420074A EP0509936A3 EP 0509936 A3 EP0509936 A3 EP 0509936A3 EP 19920420074 EP19920420074 EP 19920420074 EP 92420074 A EP92420074 A EP 92420074A EP 0509936 A3 EP0509936 A3 EP 0509936A3
Authority
EP
European Patent Office
Prior art keywords
manufacturing
magnetic circuit
mechanical stresses
circuit insensitive
homopolar
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.)
Granted
Application number
EP19920420074
Other languages
French (fr)
Other versions
EP0509936B1 (en
EP0509936A2 (en
Inventor
Jacques Vallot
Marc Paupert
Alain Germain
Claude Burnot
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.)
Schneider Electric SE
Original Assignee
Merlin Gerin 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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0509936A2 publication Critical patent/EP0509936A2/en
Publication of EP0509936A3 publication Critical patent/EP0509936A3/en
Application granted granted Critical
Publication of EP0509936B1 publication Critical patent/EP0509936B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/266—Fastening or mounting the core on casing or support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions
    • H01F2038/305—Constructions with toroidal magnetic core

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Dc-Dc Converters (AREA)
  • Coils Or Transformers For Communication (AREA)
EP92420074A 1991-03-27 1992-03-13 Homopolar transformer with magnetic circuit insensitive to mechanical stresses, and manufacturing method Expired - Lifetime EP0509936B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9103831A FR2674674B1 (en) 1991-03-27 1991-03-27 HOMOPOLAR TRANSFORMER WITH MAGNETIC CIRCUIT INSENSITIVE TO MECHANICAL CONSTRAINTS, AND MANUFACTURING METHOD THEREOF.
FR9103831 1991-03-27

Publications (3)

Publication Number Publication Date
EP0509936A2 EP0509936A2 (en) 1992-10-21
EP0509936A3 true EP0509936A3 (en) 1993-05-19
EP0509936B1 EP0509936B1 (en) 1995-08-30

Family

ID=9411259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420074A Expired - Lifetime EP0509936B1 (en) 1991-03-27 1992-03-13 Homopolar transformer with magnetic circuit insensitive to mechanical stresses, and manufacturing method

Country Status (4)

Country Link
EP (1) EP0509936B1 (en)
DE (1) DE69204346T2 (en)
ES (1) ES2079164T3 (en)
FR (1) FR2674674B1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9312004U1 (en) * 1993-08-11 1993-11-25 Siemens Matsushita Components GmbH & Co. KG, 81541 München Electrical component in chip design
JPH09246034A (en) * 1996-03-07 1997-09-19 Alps Electric Co Ltd Magnetic core for pulse transformer
DK0907190T3 (en) * 1997-09-29 2002-10-14 Epcos Ag Inductive Component and Method of Preparation thereof
DE29806050U1 (en) 1998-04-02 1998-08-13 Abb Patent Gmbh, 68309 Mannheim Receptacle for a toroidal core transformer, preferably for a residual current circuit breaker
DE10134056B8 (en) 2001-07-13 2014-05-28 Vacuumschmelze Gmbh & Co. Kg Process for the production of nanocrystalline magnetic cores and apparatus for carrying out the process
DE102007034532A1 (en) 2007-07-24 2009-02-05 Vacuumschmelze Gmbh & Co. Kg Magnetic core, process for its production and residual current circuit breaker
KR101228497B1 (en) * 2011-11-25 2013-01-31 주식회사 이랜텍 Transformer of improved joint strength
DE102012201002B4 (en) 2012-01-24 2022-10-06 Siemens Aktiengesellschaft Summation current transformer housing, summation current transformer and residual current circuit breaker
KR101966749B1 (en) * 2015-12-11 2019-04-08 주식회사 아모그린텍 Current transformer with magnetic shielding
CN105976992A (en) * 2016-07-05 2016-09-28 佛山诺亚电器有限公司 High-overload internal protection distribution transformer
DE102018106449A1 (en) * 2018-03-20 2019-09-26 Vacuumschmelze Gmbh & Co. Kg Magnetic assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523766A1 (en) * 1982-03-22 1983-09-23 Merlin Gerin AC or DC differential leakage current detector - includes transformer linkage between two mains wires and oscillator detector controlling cut=out relay
EP0162488A1 (en) * 1984-04-13 1985-11-27 Koninklijke Philips Electronics N.V. Transfromer comprising coacxial coil formers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0239403A (en) * 1988-07-28 1990-02-08 Nagano Japan Radio Co Method for fixing magnetic core
JPH0266908A (en) * 1988-08-31 1990-03-07 Nippon Ferrite Ltd Magnetic core
JPH0654738B2 (en) * 1989-06-16 1994-07-20 日立フェライト株式会社 Magnetic core

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523766A1 (en) * 1982-03-22 1983-09-23 Merlin Gerin AC or DC differential leakage current detector - includes transformer linkage between two mains wires and oscillator detector controlling cut=out relay
EP0162488A1 (en) * 1984-04-13 1985-11-27 Koninklijke Philips Electronics N.V. Transfromer comprising coacxial coil formers

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 190 (E-918)(4133) 18 Avril 1990 & JP-A-20 39 403 ( NAGANO NIPPON MUSEN ) 8 Février 1990 *
PATENT ABSTRACTS OF JAPAN vol. 14, no. 241 (E-931)(4184) 22 Mai 1990 & JP-A-20 66 908 ( NIPPON FERRITE ) 7 Mars 1990 *
PATENT ABSTRACTS OF JAPAN vol. 15, no. 139 (E-1053)(4667) 9 Avril 1991 & JP-A-30 19 307 ( NIPPON FERRITE ) 28 Janvier 1991 *

Also Published As

Publication number Publication date
EP0509936B1 (en) 1995-08-30
DE69204346D1 (en) 1995-10-05
EP0509936A2 (en) 1992-10-21
FR2674674A1 (en) 1992-10-02
ES2079164T3 (en) 1996-01-01
DE69204346T2 (en) 1996-04-18
FR2674674B1 (en) 1993-10-22

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