EP3176797A4 - Current transformer core, method for manufacturing same, and device equipped with said core - Google Patents

Current transformer core, method for manufacturing same, and device equipped with said core Download PDF

Info

Publication number
EP3176797A4
EP3176797A4 EP15827190.8A EP15827190A EP3176797A4 EP 3176797 A4 EP3176797 A4 EP 3176797A4 EP 15827190 A EP15827190 A EP 15827190A EP 3176797 A4 EP3176797 A4 EP 3176797A4
Authority
EP
European Patent Office
Prior art keywords
core
current transformer
device equipped
manufacturing same
transformer core
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
EP15827190.8A
Other languages
German (de)
French (fr)
Other versions
EP3176797B1 (en
EP3176797A1 (en
Inventor
Kazuhiro Hagiwara
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.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Publication of EP3176797A1 publication Critical patent/EP3176797A1/en
Publication of EP3176797A4 publication Critical patent/EP3176797A4/en
Application granted granted Critical
Publication of EP3176797B1 publication Critical patent/EP3176797B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15333—Amorphous metallic alloys, e.g. glassy metals containing nanocrystallites, e.g. obtained by annealing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15308—Amorphous metallic alloys, e.g. glassy metals based on Fe/Ni
    • 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
    • H01F27/25—Magnetic cores made from strips or ribbons
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Soft Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Transformers For Measuring Instruments (AREA)
EP15827190.8A 2014-07-28 2015-07-27 Method for manufacturing a current transformer core Active EP3176797B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014152849 2014-07-28
PCT/JP2015/071243 WO2016017578A1 (en) 2014-07-28 2015-07-27 Current transformer core, method for manufacturing same, and device equipped with said core

Publications (3)

Publication Number Publication Date
EP3176797A1 EP3176797A1 (en) 2017-06-07
EP3176797A4 true EP3176797A4 (en) 2018-03-21
EP3176797B1 EP3176797B1 (en) 2020-09-02

Family

ID=55217479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15827190.8A Active EP3176797B1 (en) 2014-07-28 2015-07-27 Method for manufacturing a current transformer core

Country Status (5)

Country Link
EP (1) EP3176797B1 (en)
JP (1) JP6491666B2 (en)
CN (1) CN106575567B (en)
ES (1) ES2833413T3 (en)
WO (1) WO2016017578A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106409460A (en) * 2016-08-22 2017-02-15 吴雅萍 Magnetically soft alloy
CN106319188B (en) * 2016-09-29 2018-01-16 安徽工业大学 A kind of magnetic field heat treatment process suitable for ring-shaped device
CN106952720B (en) * 2017-02-28 2020-05-01 佛山市中研非晶科技股份有限公司 Preparation method of cobalt-based amorphous iron core for magnetic amplifier
CN109298066A (en) * 2018-09-10 2019-02-01 兰州交通大学 A kind of open type current transformer iron core rust detection device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5252148A (en) * 1989-05-27 1993-10-12 Tdk Corporation Soft magnetic alloy, method for making, magnetic core, magnetic shield and compressed powder core using the same
JP2859286B2 (en) * 1989-03-09 1999-02-17 日立金属株式会社 Manufacturing method of ultra-microcrystalline magnetic alloy
WO2002023560A1 (en) * 2000-09-15 2002-03-21 Vacuumschmelze Gmbh & Co. Kg Half-cycle transductor with a magnetic core, use of half-cycle transductors and method for producing magnetic cores for half-cycle transductors
US20060077030A1 (en) * 2003-04-02 2006-04-13 Vacuumschmelze Gmbh & Co. Kg. Magnet core

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596360A (en) * 1982-07-02 1984-01-13 Sony Corp Heat treatment of amorphous magnetic alloy
JP2710949B2 (en) * 1988-03-30 1998-02-10 日立金属株式会社 Manufacturing method of ultra-microcrystalline soft magnetic alloy
JP3719449B2 (en) * 1994-04-15 2005-11-24 日立金属株式会社 Nanocrystalline alloy, method for producing the same, and magnetic core using the same
JP3856245B2 (en) * 1994-07-20 2006-12-13 日立金属株式会社 Method for producing high permeability nanocrystalline alloy
JPH11186020A (en) * 1997-12-18 1999-07-09 Toshiba Corp Zero-phase current transformer
JP2001052933A (en) * 1999-08-12 2001-02-23 Toshiba Corp Magnetic core and current sensor using the magnetic core

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2859286B2 (en) * 1989-03-09 1999-02-17 日立金属株式会社 Manufacturing method of ultra-microcrystalline magnetic alloy
US5252148A (en) * 1989-05-27 1993-10-12 Tdk Corporation Soft magnetic alloy, method for making, magnetic core, magnetic shield and compressed powder core using the same
WO2002023560A1 (en) * 2000-09-15 2002-03-21 Vacuumschmelze Gmbh & Co. Kg Half-cycle transductor with a magnetic core, use of half-cycle transductors and method for producing magnetic cores for half-cycle transductors
US20060077030A1 (en) * 2003-04-02 2006-04-13 Vacuumschmelze Gmbh & Co. Kg. Magnet core

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2016017578A1 *

Also Published As

Publication number Publication date
CN106575567A (en) 2017-04-19
JP6491666B2 (en) 2019-03-27
EP3176797B1 (en) 2020-09-02
EP3176797A1 (en) 2017-06-07
ES2833413T3 (en) 2021-06-15
CN106575567B (en) 2020-05-12
JPWO2016017578A1 (en) 2017-06-15
WO2016017578A1 (en) 2016-02-04

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