GB854797A - High-tension electric cable - Google Patents
High-tension electric cableInfo
- Publication number
- GB854797A GB854797A GB39047/58A GB3904758A GB854797A GB 854797 A GB854797 A GB 854797A GB 39047/58 A GB39047/58 A GB 39047/58A GB 3904758 A GB3904758 A GB 3904758A GB 854797 A GB854797 A GB 854797A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- film
- layers
- scratches
- dec
- 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
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
Landscapes
- Insulating Bodies (AREA)
Abstract
854,797. Cables. ALGEMENE KUNSTZIJDE UNIE N. V. Dec. 3, 1958 [Dec. 24, 1957], No. 39047/58. Class 36 In a high-tension cable having a number of thin insulating layers of a solid organic artificial substance between the conductor and its sheathing, the layers being separated from one another only by oil, the layers consist of films or foils which are highly resistant to the action of the oil and have been finely scratched on at least one side so as to provide freedom of movement .for the oil. Examples of insulating materials are polymethylene terephthalate, polyethylene terephthalate, polyamides, polyethylene, polypropylene, polybutylene, polybutadiene, polyvinyl chloride, polystyrene, and cellulose ester, such as cellulose acetate, the material preferably having a dielectric constant close to that of the oil. The scratching is preferably effected by grinding discs which are traversed rapidly from side to side of the film as it is advanced slowly longitudinally. The film may alternatively be " goffered " so as to provide parallel rectilinear scratches across the film, the distance between the scratches being at least three times the depth of the scratch. The films may be preheated to reduce the tendency to shrink at the working temperature, and film-thickness may be graded. from the conductor outwards.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL854797X | 1957-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB854797A true GB854797A (en) | 1960-11-23 |
Family
ID=19847217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB39047/58A Expired GB854797A (en) | 1957-12-24 | 1958-12-03 | High-tension electric cable |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB854797A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1281008B (en) * | 1961-03-31 | 1968-10-24 | Pirelli | High voltage electrical cable |
-
1958
- 1958-12-03 GB GB39047/58A patent/GB854797A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1281008B (en) * | 1961-03-31 | 1968-10-24 | Pirelli | High voltage electrical cable |
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