GB339804A - Improvements in electric cables - Google Patents

Improvements in electric cables

Info

Publication number
GB339804A
GB339804A GB3908429A GB3908429A GB339804A GB 339804 A GB339804 A GB 339804A GB 3908429 A GB3908429 A GB 3908429A GB 3908429 A GB3908429 A GB 3908429A GB 339804 A GB339804 A GB 339804A
Authority
GB
United Kingdom
Prior art keywords
oil
sheath
armouring
cable
lead sheath
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
GB3908429A
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.)
Callenders Cable and Construction Co Ltd
Original Assignee
Callenders Cable and Construction 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 Callenders Cable and Construction Co Ltd filed Critical Callenders Cable and Construction Co Ltd
Priority to GB3908429A priority Critical patent/GB339804A/en
Publication of GB339804A publication Critical patent/GB339804A/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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • H01B7/226—Helicoidally wound metal wires or tapes

Landscapes

  • Insulated Conductors (AREA)

Abstract

339,804. Callender's Cable & Construction Co., Ltd., and Brazier, L. G. Dec. 20, 1929. Armouring cables.-In order that no permanent change of internal volume due to temperature variations may occur in a high tension cable of the kind comprising paper or other insulation impregnated with oil or oil and resin and enclosed in a lead sheath, the sheath is reinforced by a tape wrapped on helically with a short pitch and formed of steel having an elastic limit stress of approximately 100 tons per square inch . A layer of armouring preferably in the form of flat wires or tapes applied with a long lay may be interposed between the lead sheath and the steel reinforcement.
GB3908429A 1929-12-20 1929-12-20 Improvements in electric cables Expired GB339804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3908429A GB339804A (en) 1929-12-20 1929-12-20 Improvements in electric cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3908429A GB339804A (en) 1929-12-20 1929-12-20 Improvements in electric cables

Publications (1)

Publication Number Publication Date
GB339804A true GB339804A (en) 1930-12-18

Family

ID=10407540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3908429A Expired GB339804A (en) 1929-12-20 1929-12-20 Improvements in electric cables

Country Status (1)

Country Link
GB (1) GB339804A (en)

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