GB938813A - Improvements in and relating to the insulation of oil-immersed electrical apparatus - Google Patents
Improvements in and relating to the insulation of oil-immersed electrical apparatusInfo
- Publication number
- GB938813A GB938813A GB908759A GB908759A GB938813A GB 938813 A GB938813 A GB 938813A GB 908759 A GB908759 A GB 908759A GB 908759 A GB908759 A GB 908759A GB 938813 A GB938813 A GB 938813A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- covering
- electrical apparatus
- march
- sold
- 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
- 238000009413 insulation Methods 0.000 title 1
- -1 polyethylene terephthalate Polymers 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000004698 Polyethylene Substances 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 229920000515 polycarbonate Polymers 0.000 abstract 1
- 239000004417 polycarbonate Substances 0.000 abstract 1
- 229920000573 polyethylene Polymers 0.000 abstract 1
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract 1
- 239000005020 polyethylene terephthalate Substances 0.000 abstract 1
- 239000001294 propane Substances 0.000 abstract 1
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/30—Drying; Impregnating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Bodies (AREA)
- Organic Insulating Materials (AREA)
Abstract
938,813. Electric cables. ENGLISH ELECTRIC CO. Ltd. March 11, 1960 [March 16, 1959], No. 9087/59. Class 36. [Also in Group XXXV] The conductors of oil immersed electrical apparatus are covered by an oil-impregnated insulating covering (paper) having a greater affinity for water than for oil underneath which is a further covering of insulating material which, when impregnated with oil, is substantially impermeable to water and has a melting point in excess of 150‹ C. and a dielectric constant between 3.0 and 3.5. The inner insulating covering may be a three layer half lap wound covering of tape made from polyethylene terephthalate ester, sold as " Melinex " (Registered Trade Mark), 4,4<SP>1</SP>-dihydroxydiphenyl 2,2-propane polycarbonate, sold as " Makrofol " (Registered Trade Mark) or polyethylene which has been irradiated in excess of 40 megarads. The inner tape covering may be provided with roughened surfaces to facilitate the entry of oil.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB908759A GB938813A (en) | 1959-03-16 | 1959-03-16 | Improvements in and relating to the insulation of oil-immersed electrical apparatus |
| CH271660A CH366328A (en) | 1959-03-16 | 1960-03-10 | Electrical apparatus comprising conductors immersed in oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB908759A GB938813A (en) | 1959-03-16 | 1959-03-16 | Improvements in and relating to the insulation of oil-immersed electrical apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB938813A true GB938813A (en) | 1963-10-09 |
Family
ID=9865106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB908759A Expired GB938813A (en) | 1959-03-16 | 1959-03-16 | Improvements in and relating to the insulation of oil-immersed electrical apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH366328A (en) |
| GB (1) | GB938813A (en) |
-
1959
- 1959-03-16 GB GB908759A patent/GB938813A/en not_active Expired
-
1960
- 1960-03-10 CH CH271660A patent/CH366328A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH366328A (en) | 1962-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES8102407A1 (en) | Electrical inductive apparatus | |
| ES8602295A1 (en) | Oil-filled electric cable with alternate layers of plastic and paper tape insulation | |
| GB905240A (en) | Improvements in high voltage power cable | |
| DE2965699D1 (en) | Process for the production of winding tapes for the high voltage insulation of electric machines and apparatuses, and winding tape for making an insulating envelope for electric conductors | |
| GB938813A (en) | Improvements in and relating to the insulation of oil-immersed electrical apparatus | |
| ES472632A1 (en) | Submarine electric power cables containing naphthalene based liquids | |
| JPS56161626A (en) | Transformer | |
| GB965545A (en) | Improvements in or relating to oil-immersed electrical apparatus | |
| JPS5422589A (en) | Ultra-high voltage power cable | |
| GB928022A (en) | Improvements in high voltage power cables | |
| JPS52140802A (en) | Method of providing electric conductor with insulation treatment | |
| GB906631A (en) | Improvements in or relating to the screening of high-tension electric cables | |
| SE8008293L (en) | ELECTRICAL DEVICE WITH INSULATION OF IMPREGNATED SYNTHETIC PAPER | |
| GB1458457A (en) | Impregnated paper insulated electric cable and impregnated paper for use in insulating an electric cable | |
| GB815394A (en) | Improvements in or relating to paper screening tape for high-tension electric cables | |
| JPS5683246A (en) | Manufacturing of magnetic field coil | |
| JPS54157202A (en) | Manufacturing method of heat resisting wire for electric machine | |
| GB1028874A (en) | Improvements in or relating to electrical insulation in electrical apparatus | |
| ES463010A1 (en) | Insulated electrical conductor | |
| JPS52151801A (en) | Method of impregnating electric device with insulating varnish | |
| GB944734A (en) | Cast resin insulation with shrunk-on sleeve | |
| JPS5498995A (en) | Bushing | |
| JPS53141424A (en) | Insulating method of winding for electric machinery | |
| JPS52135085A (en) | Power cable of oil-immersed paper insulation | |
| SE7610165L (en) | ELECTRICAL APPLIANCE WITH IMPROVED DIELECTRICAL SYSTEM |