JPS5484229A - Reducing method of iron loss of three phase transformer iron core - Google Patents
Reducing method of iron loss of three phase transformer iron coreInfo
- 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
Links
Classifications
-
- 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
- H01F27/245—Magnetic 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%.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5035679A (en) * | 1973-08-07 | 1975-04-04 |
-
1977
- 1977-12-19 JP JP15166677A patent/JPS5484229A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5035679A (en) * | 1973-08-07 | 1975-04-04 |
Cited By (12)
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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