GB675224A - Improvements in electric cables - Google Patents

Improvements in electric cables

Info

Publication number
GB675224A
GB675224A GB26332/49A GB2633249A GB675224A GB 675224 A GB675224 A GB 675224A GB 26332/49 A GB26332/49 A GB 26332/49A GB 2633249 A GB2633249 A GB 2633249A GB 675224 A GB675224 A GB 675224A
Authority
GB
United Kingdom
Prior art keywords
dielectric
lead sheath
paper
mils
impregnated
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
GB26332/49A
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
Priority to BE484104D priority Critical patent/BE484104A/xx
Priority to NL77748D priority patent/NL77748C/xx
Priority to BE498508D priority patent/BE498508A/xx
Priority to BE498509D priority patent/BE498509A/xx
Priority to NL696904373A priority patent/NL141712B/en
Priority to GB21213/47A priority patent/GB625512A/en
Priority to CH270121D priority patent/CH270121A/en
Priority to FR969538D priority patent/FR969538A/en
Application filed by WT Glover and Co Ltd filed Critical WT Glover and Co Ltd
Priority to CH288079D priority patent/CH288079A/en
Priority to FR60497D priority patent/FR60497E/en
Priority to FR61032D priority patent/FR61032E/en
Priority to US187040A priority patent/US2650261A/en
Priority to DEG3889A priority patent/DE914507C/en
Priority to DEG8698A priority patent/DE924390C/en
Publication of GB675224A publication Critical patent/GB675224A/en
Priority to GB28071/56A priority patent/GB817616A/en
Priority to DEG22860A priority patent/DE1063667B/en
Priority to FR72319D priority patent/FR72319E/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
    • H01B9/00—Power cables
    • H01B9/06—Gas-pressure cables; Oil-pressure cables; Cables for use in conduits under fluid pressure
    • H01B9/0644—Features relating to the dielectric of gas-pressure cables
    • H01B9/0655—Helically wrapped insulation
    • 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
    • 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

675,224. Gas-filled cables. GLOVER & CO., Ltd., W. T. Oct. 12, 1950 [Oct. 13, 1949], No. 26332/49. Addition to 625,512. Class 36. A super-tension electric cable is provided with a lapped dielectric consisting of an inner part 3 built up of not less than fourteen alternate single strip layers of orientated polystyrene film and pre-impregnated paper, and an outer part 4 of pre-impregnated paper, the interstices of both parts being filled with gas under super-atmospheric pressure under operating conditions, and the inner part 3 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 wall thickness of the whole dielectric. The polystyrene film is about 4 mils. thick and the interleaving paper about 2.5 mils. The cable preferably comprises a conductor 1, a metallized paper screen 2, dielectric 3, 4, a copper tape screen 5, lead sheath 6, metal re-inforcing tapes 7, 8, 9, an outer lead sheath 10 and a protective covering of bitumen-impregnated jute or the like 11. Under operating conditions the cable core within the lead sheath 6 contains nitrogen under a pressure of fourteen atmospheres.
GB26332/49A 1947-08-05 1949-10-13 Improvements in electric cables Expired GB675224A (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
BE484104D BE484104A (en) 1947-08-05
NL77748D NL77748C (en) 1947-08-05
BE498508D BE498508A (en) 1947-08-05
BE498509D BE498509A (en) 1947-08-05
NL696904373A NL141712B (en) 1947-08-05 METHOD OF MANUFACTURING AN ELECTROLUMINESCENT ELEMENT, AS WELL AS THE MANUFACTURED ELEMENT.
GB21213/47A GB625512A (en) 1947-08-05 1947-08-05 Improvements in electric cables
CH270121D CH270121A (en) 1947-08-05 1948-07-09 High voltage cables.
FR969538D FR969538A (en) 1947-08-05 1948-07-24 Improvements to electric cables
CH288079D CH288079A (en) 1947-08-05 1950-09-22 High voltage cables.
FR60497D FR60497E (en) 1947-08-05 1950-09-26 Improvements to electric cables
FR61032D FR61032E (en) 1947-08-05 1950-09-27 Improvements to electric cables
US187040A US2650261A (en) 1947-08-05 1950-09-27 Gas-filled electric cable with paper and polystyrene insulation
DEG3889A DE914507C (en) 1947-08-05 1950-09-29 High-voltage cable with a conductor and an overlapping dielectric
DEG8698A DE924390C (en) 1947-08-05 1950-10-26 High voltage cables
GB28071/56A GB817616A (en) 1947-08-05 1956-09-13 Improvements in electric cables
DEG22860A DE1063667B (en) 1947-08-05 1957-09-03 High-voltage cable with a conductor and a dielectric that is rolled up over it
FR72319D FR72319E (en) 1947-08-05 1957-09-12 Improvements to electric cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB270121X 1947-08-05

Publications (1)

Publication Number Publication Date
GB675224A true GB675224A (en) 1952-07-09

Family

ID=10252738

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26332/49A Expired GB675224A (en) 1947-08-05 1949-10-13 Improvements in electric cables

Country Status (1)

Country Link
GB (1) GB675224A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153132A (en) * 1984-01-17 1985-08-14 Pirelli Cavi Spa Oil-filled cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153132A (en) * 1984-01-17 1985-08-14 Pirelli Cavi Spa Oil-filled cable

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