GB1370122A - Electric cables - Google Patents

Electric cables

Info

Publication number
GB1370122A
GB1370122A GB500771A GB500771A GB1370122A GB 1370122 A GB1370122 A GB 1370122A GB 500771 A GB500771 A GB 500771A GB 500771 A GB500771 A GB 500771A GB 1370122 A GB1370122 A GB 1370122A
Authority
GB
United Kingdom
Prior art keywords
layer
cable
dielectric
extruded
conductive
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
GB500771A
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.)
Balfour Beatty PLC
Original Assignee
BICC PLC
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 ZA720930A priority Critical patent/ZA72930B/en
Application filed by BICC PLC filed Critical BICC PLC
Priority to GB500771A priority patent/GB1370122A/en
Publication of GB1370122A publication Critical patent/GB1370122A/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
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/027—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of semi-conducting layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H01B13/141—Insulating conductors or cables by extrusion of two or more insulating layers
    • 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
    • H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation

Abstract

1370122 Extruded cable BRITISH INSULATED CALLENDER'S CABLES Ltd 18 Feb 1972 [19 Feb 1971] 5007/71 Heading B5A [Also in Division H1] A single or multicore cable has a conductive core insulated by an extruded layer of synthetic plastics material or rubber and a dielectric screen comprising a thin inner extruded layer of conductive or semi-conductive plastics or rubber, firmly bonded to the insulating layer and a second outer extruded layer of similar material in contiguous, intimate and electrical contact with the inner layer but not bonded thereto so that when the cable is bared, e.g. for jointing, the outer dielectric layer may be stripped away, and the inner layer removed easily with e.g. an abrasive. The insulating materials described include rubber and similar known synthetic materials, electrically conductive material being added to the material required for the dielectric screens. A method of manufacture is described wherein the cable is completely formed on passage through the extrusion line and includes discharge scanning of the core after application of the dielectric inner layer. An example of the invention applied to a 10 kV polythene insulated cable is given.
GB500771A 1972-02-18 1972-02-18 Electric cables Expired GB1370122A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ZA720930A ZA72930B (en) 1972-02-18 1972-02-14 Improvements in electric cables
GB500771A GB1370122A (en) 1972-02-18 1972-02-18 Electric cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB500771A GB1370122A (en) 1972-02-18 1972-02-18 Electric cables

Publications (1)

Publication Number Publication Date
GB1370122A true GB1370122A (en) 1974-10-09

Family

ID=9787993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB500771A Expired GB1370122A (en) 1972-02-18 1972-02-18 Electric cables

Country Status (2)

Country Link
GB (1) GB1370122A (en)
ZA (1) ZA72930B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785138A (en) * 1985-12-06 1988-11-15 Kabel Electro Gesellschaft mit beschrankter Haftung Electric cable for use as phase winding for linear motors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785138A (en) * 1985-12-06 1988-11-15 Kabel Electro Gesellschaft mit beschrankter Haftung Electric cable for use as phase winding for linear motors

Also Published As

Publication number Publication date
ZA72930B (en) 1972-10-25

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees