GB854797A - High-tension electric cable - Google Patents

High-tension electric cable

Info

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
Application number
GB39047/58A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akzo NV
Original Assignee
Algemene Kunstzijde Unie NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Algemene Kunstzijde Unie NV filed Critical Algemene Kunstzijde Unie NV
Publication of GB854797A publication Critical patent/GB854797A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/02Disposition 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.
GB39047/58A 1957-12-24 1958-12-03 High-tension electric cable Expired GB854797A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1281008B (en) * 1961-03-31 1968-10-24 Pirelli High voltage electrical cable

Cited By (1)

* Cited by examiner, † Cited by third party
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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