JPS5720419A - Electric device - Google Patents
Electric deviceInfo
- Publication number
- JPS5720419A JPS5720419A JP9519380A JP9519380A JPS5720419A JP S5720419 A JPS5720419 A JP S5720419A JP 9519380 A JP9519380 A JP 9519380A JP 9519380 A JP9519380 A JP 9519380A JP S5720419 A JPS5720419 A JP S5720419A
- Authority
- JP
- Japan
- Prior art keywords
- insulator
- electric field
- mold
- coils
- field intensity
- 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
- 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
- H01F41/005—Impregnating or encapsulating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
Abstract
PURPOSE:To improve the insulating characteristic of an electric device in which its body is injection molded with insulator by coating the part having small electric field intensity of the device body with a material for preventing the adhesion of the insulator to the body before molding the insulator, thereby concentrating voids occurred in the insulator to the part having small electric field intensity. CONSTITUTION:A transformer body 4 having low and high voltage coils 2 and 3 and a core 1 wound with the coils is filled in a mold 5, insulator 6 is filled in the space between the coils 2, 3 and the core 1, the mold 5, and the molded electric device is thus formed. Thus, when the insulator 6 is solidified and shrinked, irregular voids 7 are produced, and the entire dielectric strength is weakened. Accordingly, a plurality of parts having low electric field intensity of the body 4 are selected, and an adhesion preventive layer 8 made of mold releasing agent is formed in advance on the inner surface of the mold 5 in contact with the parts. Thus, even if the insulator 6 is exfoliated to produce voids 7, the shrinkage margin of the insulator 6 is provided thereat, and the void 7 is not produced at the high electric field part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9519380A JPS5720419A (en) | 1980-07-11 | 1980-07-11 | Electric device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9519380A JPS5720419A (en) | 1980-07-11 | 1980-07-11 | Electric device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5720419A true JPS5720419A (en) | 1982-02-02 |
Family
ID=14130906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9519380A Pending JPS5720419A (en) | 1980-07-11 | 1980-07-11 | Electric device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5720419A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58203112A (en) * | 1982-05-21 | 1983-11-26 | Toray Ind Inc | Production of polyester fiber |
| JPS591713A (en) * | 1982-06-22 | 1984-01-07 | Toray Ind Inc | Production of polyethylene terephthalate fiber |
| JPS5915513A (en) * | 1982-07-13 | 1984-01-26 | Toray Ind Inc | Production of polyester fiber |
| JPS5921714A (en) * | 1982-07-23 | 1984-02-03 | Toray Ind Inc | Method for drawing polyester fiber |
| JPS5953736A (en) * | 1982-09-22 | 1984-03-28 | 東レ株式会社 | Polyester tire cord and production thereof |
-
1980
- 1980-07-11 JP JP9519380A patent/JPS5720419A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58203112A (en) * | 1982-05-21 | 1983-11-26 | Toray Ind Inc | Production of polyester fiber |
| JPH0532491B2 (en) * | 1982-05-21 | 1993-05-17 | Toray Industries | |
| JPS591713A (en) * | 1982-06-22 | 1984-01-07 | Toray Ind Inc | Production of polyethylene terephthalate fiber |
| JPS5915513A (en) * | 1982-07-13 | 1984-01-26 | Toray Ind Inc | Production of polyester fiber |
| JPS5921714A (en) * | 1982-07-23 | 1984-02-03 | Toray Ind Inc | Method for drawing polyester fiber |
| JPS5953736A (en) * | 1982-09-22 | 1984-03-28 | 東レ株式会社 | Polyester tire cord and production thereof |
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