JPS5484229A - Reducing method of iron loss of three phase transformer iron core - Google Patents

Reducing method of iron loss of three phase transformer iron core

Info

Publication number
JPS5484229A
JPS5484229A JP15166677A JP15166677A JPS5484229A JP S5484229 A JPS5484229 A JP S5484229A JP 15166677 A JP15166677 A JP 15166677A JP 15166677 A JP15166677 A JP 15166677A JP S5484229 A JPS5484229 A JP S5484229A
Authority
JP
Japan
Prior art keywords
joint part
steel plate
iron loss
pattern
iron 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.)
Pending
Application number
JP15166677A
Other languages
Japanese (ja)
Inventor
Takaaki Yamamoto
Yoshihiro Oya
Tadao Nozawa
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP15166677A priority Critical patent/JPS5484229A/en
Publication of JPS5484229A publication Critical patent/JPS5484229A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/245Magnetic cores made from sheets, e.g. grain-oriented

Abstract

PURPOSE:To intend to reduce iron loss at T shape joint part, by making surface treatment on a steel plate in the range which produces rotary flux of three phase transformer iron core. CONSTITUTION:Surface treatment by which minute local distortion caused by suitable drawn pattern is made on a steel plate on which rotary flux such as T joint part of three phase three legs type transformer iron core is existed, or iron loss at T shape joint part is intended to be reduced by removing surface film which is generally given on one directional steel plate product. For example, pattern on the upper part such as length 2 mm, interval 1.0 mm and space of line 2.5 mm are drawun on the T shape joint part in the right angle direction to rolled direction, and after this, perpendicular line 1 is drawn as T shape pattern of 2 mm in parallel to the rolled direction. Comparing with steel plate which has not drawn pattern, reduction rate of iron loss at T shape joint part is improved to 2.95%.
JP15166677A 1977-12-19 1977-12-19 Reducing method of iron loss of three phase transformer iron core Pending JPS5484229A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15166677A JPS5484229A (en) 1977-12-19 1977-12-19 Reducing method of iron loss of three phase transformer iron core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15166677A JPS5484229A (en) 1977-12-19 1977-12-19 Reducing method of iron loss of three phase transformer iron core

Publications (1)

Publication Number Publication Date
JPS5484229A true JPS5484229A (en) 1979-07-05

Family

ID=15523566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15166677A Pending JPS5484229A (en) 1977-12-19 1977-12-19 Reducing method of iron loss of three phase transformer iron core

Country Status (1)

Country Link
JP (1) JPS5484229A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57126112A (en) * 1981-01-29 1982-08-05 Nippon Steel Corp Laminated iron core for transformer
JPS5842924U (en) * 1981-09-17 1983-03-23 三菱電機株式会社 Electromagnetic induction equipment core
JPS6112008A (en) * 1984-06-15 1986-01-20 ウエスチングハウス エレクトリック コ−ポレ−ション Electric induction device and method of producing same
JP2008060353A (en) * 2006-08-31 2008-03-13 Jfe Steel Kk Product iron core transformer and manufacturing method therefor
US10192669B2 (en) 2013-11-29 2019-01-29 Toshiba Industrial Products & Systems Corporation Vector magnetic characteristic controlled material and iron core
WO2019151401A1 (en) 2018-01-31 2019-08-08 Jfeスチール株式会社 Grain-oriented electrical steel sheet, transformer stacked core using same, and method for producing stacked core
WO2020255429A1 (en) * 2019-06-20 2020-12-24 株式会社日立産機システム Laminated-core stationary induction apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035679A (en) * 1973-08-07 1975-04-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035679A (en) * 1973-08-07 1975-04-04

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57126112A (en) * 1981-01-29 1982-08-05 Nippon Steel Corp Laminated iron core for transformer
JPS5842924U (en) * 1981-09-17 1983-03-23 三菱電機株式会社 Electromagnetic induction equipment core
JPH0138898Y2 (en) * 1981-09-17 1989-11-21
JPS6112008A (en) * 1984-06-15 1986-01-20 ウエスチングハウス エレクトリック コ−ポレ−ション Electric induction device and method of producing same
JPH0362007B2 (en) * 1984-06-15 1991-09-24 Westinghouse Electric Corp
JP2008060353A (en) * 2006-08-31 2008-03-13 Jfe Steel Kk Product iron core transformer and manufacturing method therefor
US10192669B2 (en) 2013-11-29 2019-01-29 Toshiba Industrial Products & Systems Corporation Vector magnetic characteristic controlled material and iron core
WO2019151401A1 (en) 2018-01-31 2019-08-08 Jfeスチール株式会社 Grain-oriented electrical steel sheet, transformer stacked core using same, and method for producing stacked core
KR20200103091A (en) 2018-01-31 2020-09-01 제이에프이 스틸 가부시키가이샤 Directional electrical steel sheet and method of manufacturing hematite core and hematite core of transformer using the same
US11495378B2 (en) 2018-01-31 2022-11-08 Jfe Steel Corporation Grain-oriented electrical steel sheet, stacked transformer core using the same, and method for producing stacked core
WO2020255429A1 (en) * 2019-06-20 2020-12-24 株式会社日立産機システム Laminated-core stationary induction apparatus
JP2021002567A (en) * 2019-06-20 2021-01-07 株式会社日立産機システム Stacked iron core type stationary induction device

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