GB940269A - Improvements relating to electric cables - Google Patents

Improvements relating to electric cables

Info

Publication number
GB940269A
GB940269A GB366460A GB366460A GB940269A GB 940269 A GB940269 A GB 940269A GB 366460 A GB366460 A GB 366460A GB 366460 A GB366460 A GB 366460A GB 940269 A GB940269 A GB 940269A
Authority
GB
United Kingdom
Prior art keywords
cable
polyethylene
impregnated
oil
layers
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
GB366460A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB940269A publication Critical patent/GB940269A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Insulating Materials (AREA)

Abstract

Cable insulation comprises at least one layer of cross-linked polyethylene impregnated with cable oil. Cross-linking may be performed chemically by admixture with 3% of a peroxide such as di-x-cumyl peroxide and subsequent heat treatment, or by irradiation. Impregnation may be effected before or after the polyethylene is applied to the cable, application being either by extrusion or lapping. Suitable oils are conventional hydrocarbon, high purity, non-acidic and non-polar cable oils, preferably prepared from a naphthenic base and having a viscosity within the range 95-105 Saybolt at 100 DEG C. The insulation is preferably built up in layers of impregnated polyethylene tapes alternating with impregnated Kraft paper tapes, the latter acting as a wick or reservoir for changes in oil content of the polyethylene due to temperature variations. Some or all of the Kraft layers may be replaced by varnished cambric or by polyethylene terephthalate, polycarbonates, polymericamides or like materials. The cable may be adapted to oil or gas-filled pressure systems, nitrogen being a suitable gas. Test data are disclosed.
GB366460A 1959-02-20 1960-02-02 Improvements relating to electric cables Expired GB940269A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79461759A 1959-02-20 1959-02-20

Publications (1)

Publication Number Publication Date
GB940269A true GB940269A (en) 1963-10-30

Family

ID=25163159

Family Applications (1)

Application Number Title Priority Date Filing Date
GB366460A Expired GB940269A (en) 1959-02-20 1960-02-02 Improvements relating to electric cables

Country Status (3)

Country Link
DE (1) DE1161604B (en)
FR (1) FR1248920A (en)
GB (1) GB940269A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450968A (en) * 1965-11-18 1969-06-17 Gen Electric Electrical elements with impregnated dielectrics and insulators
US3527874A (en) * 1966-09-27 1970-09-08 Sumitomo Electric Industries Crosslinked polyethylene oil filled high voltage powered cable
US4096346A (en) * 1973-01-31 1978-06-20 Samuel Moore And Company Wire and cable

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL136429C (en) * 1963-08-19 1900-01-01
DE2352450C2 (en) * 1973-10-19 1982-05-13 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Stabilized insulating material based on polyolefin, in particular based on a cross-linked polyethylene

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450968A (en) * 1965-11-18 1969-06-17 Gen Electric Electrical elements with impregnated dielectrics and insulators
US3527874A (en) * 1966-09-27 1970-09-08 Sumitomo Electric Industries Crosslinked polyethylene oil filled high voltage powered cable
US4096346A (en) * 1973-01-31 1978-06-20 Samuel Moore And Company Wire and cable

Also Published As

Publication number Publication date
FR1248920A (en) 1960-12-23
DE1161604B (en) 1964-01-23

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