GB965545A - Improvements in or relating to oil-immersed electrical apparatus - Google Patents
Improvements in or relating to oil-immersed electrical apparatusInfo
- Publication number
- GB965545A GB965545A GB4122159A GB4122159A GB965545A GB 965545 A GB965545 A GB 965545A GB 4122159 A GB4122159 A GB 4122159A GB 4122159 A GB4122159 A GB 4122159A GB 965545 A GB965545 A GB 965545A
- Authority
- GB
- United Kingdom
- Prior art keywords
- insulation
- oil
- main
- transformers
- impervious
- 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.)
- Expired
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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
Abstract
965,545. Transformers. ENGLISH ELECTRIC CO. Ltd. Nov. 29, 1960 [Dec. 4, 1959]. No. 41221/59. Heading H1T. The main insulation 14a, Fig. 2, oil impregnated in use, of oil immersed electrical apparatus, e.g. transformers, having a plurality of conductors 13, is part covered by insulation 14b impervious to liquids which restricts ingress of water to the main insulation, the insulation 14b having a melting point in excess of 150‹ C. and a dielectric constant between 3.0 and 3.5. In coils 12, Fig. 1, the part insulation 14b is wound such that adjacent conductors 13 have their inner insulation 14a exposed at alternate main oil surfaces 16a, 16b. The part insulation may be completely covered by further insulation 14c, impregnated by the oil 15. Alternative arrangements of the part insulation are described (Figs. 3 and 6, not shown). In Figs. 4 and 5 (not shown), the main insulation is a laminated arrangement of continuous layers separated by discontinuous layers of the impervious insulation, the discontinuities occurring in different positions in adjacent layers. The main and part insulations are preferably of similar permittivity. Materials which may be used for the part insulation include polyethylene terephthalate film, polycarbonate film and irradiated polyethylene film.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4122159A GB965545A (en) | 1959-12-04 | 1959-12-04 | Improvements in or relating to oil-immersed electrical apparatus |
| CH1330960A CH369198A (en) | 1959-12-04 | 1960-11-28 | Electrical device with insulated conductors immersed in oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4122159A GB965545A (en) | 1959-12-04 | 1959-12-04 | Improvements in or relating to oil-immersed electrical apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB965545A true GB965545A (en) | 1964-07-29 |
Family
ID=10418684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4122159A Expired GB965545A (en) | 1959-12-04 | 1959-12-04 | Improvements in or relating to oil-immersed electrical apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH369198A (en) |
| GB (1) | GB965545A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114021407A (en) * | 2021-11-05 | 2022-02-08 | 三峡大学 | Optimization method for reducing metal conductor material consumption of oil-immersed transformer winding |
-
1959
- 1959-12-04 GB GB4122159A patent/GB965545A/en not_active Expired
-
1960
- 1960-11-28 CH CH1330960A patent/CH369198A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114021407A (en) * | 2021-11-05 | 2022-02-08 | 三峡大学 | Optimization method for reducing metal conductor material consumption of oil-immersed transformer winding |
| CN114021407B (en) * | 2021-11-05 | 2024-04-16 | 三峡大学 | Optimization method for reducing consumption of metal conductor material of winding of oil-immersed transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CH369198A (en) | 1963-05-15 |
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