GB675225A - Improvements in electric cables - Google Patents

Improvements in electric cables

Info

Publication number
GB675225A
GB675225A GB2633349A GB2633349A GB675225A GB 675225 A GB675225 A GB 675225A GB 2633349 A GB2633349 A GB 2633349A GB 2633349 A GB2633349 A GB 2633349A GB 675225 A GB675225 A GB 675225A
Authority
GB
United Kingdom
Prior art keywords
paper
cable
thickness
mils
polystyrene
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
GB2633349A
Inventor
Edward Leslie Davey
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.)
WT Glover and Co Ltd
Original Assignee
WT Glover and Co Ltd
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 WT Glover and Co Ltd filed Critical WT Glover and Co Ltd
Priority to GB2633349A priority Critical patent/GB675225A/en
Publication of GB675225A publication Critical patent/GB675225A/en
Expired legal-status Critical Current

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
    • H01B7/0241—Disposition of insulation comprising one or more helical wrapped layers of insulation

Landscapes

  • Insulated Conductors (AREA)

Abstract

675,225. Compound-filled cables. GLOVER & CO., Ltd., W. T. Oct. 12, 1950 [Oct. 5, 1949], No. 26333/49. Addition to 625,512. Class 36. A super-tension cable is provided with a lapped dielectric consisting of an inner part 3 built up of not less than fourteen layers of orientated polystyrene film and an outer part of of pre-impregnated paper, the interstices of both parts being filled with an insulating compound which does not flow within the working range of the cable, and the inner part having a wall thickness lying within a range whose lower limit is equal to 10 per cent of the radius of the conductor surface and whose upper limit amounts to 45 per cent of the radial wall thickness of the whole dielectric. The inner part 3 of the insulation may consist of alternate layers of polystyrene film and paper, the thickness of both the polystyrene and the paper being about 3.5 mils. Alternatively the paper may have a thickness of 2.5 mils. and the polystyrene a thickness of 4 mils. The impregnating compound may consist of resinous compounds, petroleum jellies and similar materials having a set point of about 60 ‹ C. or higher, depending on the working range of the cable. The cable preferably comprises a conductor 1, a metallized paper screen 2, dielectric 3, 4, a copper screening tape 5, a lead or aluminium sheath 6 and a protective covering 7.
GB2633349A 1949-10-05 1949-10-05 Improvements in electric cables Expired GB675225A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2633349A GB675225A (en) 1949-10-05 1949-10-05 Improvements in electric cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2633349A GB675225A (en) 1949-10-05 1949-10-05 Improvements in electric cables

Publications (1)

Publication Number Publication Date
GB675225A true GB675225A (en) 1952-07-09

Family

ID=10242023

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2633349A Expired GB675225A (en) 1949-10-05 1949-10-05 Improvements in electric cables

Country Status (1)

Country Link
GB (1) GB675225A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2558294A1 (en) * 1984-01-17 1985-07-19 Pirelli Cavi Spa ELECTRICAL CABLE WITH INSULATING FLUID OIL

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2558294A1 (en) * 1984-01-17 1985-07-19 Pirelli Cavi Spa ELECTRICAL CABLE WITH INSULATING FLUID OIL
GB2153132A (en) * 1984-01-17 1985-08-14 Pirelli Cavi Spa Oil-filled cable

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