EP1308968A1 - Leistungs- oder Nachrichtenkabel geeignet zur Eingrabung - Google Patents

Leistungs- oder Nachrichtenkabel geeignet zur Eingrabung Download PDF

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Publication number
EP1308968A1
EP1308968A1 EP02292568A EP02292568A EP1308968A1 EP 1308968 A1 EP1308968 A1 EP 1308968A1 EP 02292568 A EP02292568 A EP 02292568A EP 02292568 A EP02292568 A EP 02292568A EP 1308968 A1 EP1308968 A1 EP 1308968A1
Authority
EP
European Patent Office
Prior art keywords
cable
outer layer
layer
cable according
external
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.)
Granted
Application number
EP02292568A
Other languages
English (en)
French (fr)
Other versions
EP1308968B1 (de
Inventor
Bernard Poisson
Jean-François Lecoeuvre
Patrick Sanchez
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.)
Silec Cable SAS
Original Assignee
Sagem SA
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 Sagem SA filed Critical Sagem SA
Publication of EP1308968A1 publication Critical patent/EP1308968A1/de
Application granted granted Critical
Publication of EP1308968B1 publication Critical patent/EP1308968B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01B7/1875—Multi-layer sheaths
    • H01B7/1885—Inter-layer adherence preventing means
    • 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
    • H01B7/184—Sheaths comprising grooves, ribs or other projections

Definitions

  • the present invention relates to a cable withstand high mechanical particularly suitable for being buried.
  • the invention applies not only to an energy cable whatever the supply voltage, but also to a communication cable, including a fiber cable optics.
  • the sheaths of cable protection are generally made of polyethylene or polyvinyl chloride and to get satisfactory mechanical strength, it is necessary to foresee a significant increase in the thickness of the cable protection sheath so that the unwinding of cable and the use of cable preparation tools become difficult.
  • the cable protection sheath with an external layer produced made of a material having a higher elasticity that the protective sheath and having relative to the protective sheath less grip than strength tearing of the outer layer.
  • the outer layer achieves by its elasticity cushioning of constraints and thus indirectly provides reduced risk of damage to the cable so the use of a textured material thin in the trench is no longer necessary.
  • materials with high elasticity can easily be cut by the usual cable preparation tools and the limited adhesion of the outer layer compared with the protective sheath allows successively to be carried out cutting the outer layer and then protective sheath using preparation tools usual.
  • the outer layer has an outer contour having parts projecting.
  • the protruding parts are requested first and depreciation that they realize minimizes the constraint to which the central part of the cable is subjected to.
  • the protruding parts constitute pads wear when rubbing on the ground during unwinding of the cable and its laying in the trench, which verifies that the abrasion did not cause a wear of the outer layer beyond an acceptable amount.
  • the parts of the outer layer of lesser thickness between the projecting parts allow a better thermal evacuation than that achieved by a layer of uniform thickness.
  • the outer layer has an outline external in slots whose protruding parts are longitudinal or arranged in a helix around the cable. This provides multidirectional protection of the cable while promoting flexion of the cable during unwinding.
  • the outer layer has reinforcing fibers which preferably extend in a direction substantially longitudinal of the cable.
  • the electrical cable illustrated comprises in a manner known per se a conductor 1 covered with a conductive layer 2, itself covered an insulating layer 3.
  • the insulating layer 3 is at turn covered with a conductive layer 4 on which is disposed a metal shield 5 covered a protective sheath 6, the latter generally being made of polyethylene or polyvinyl chloride.
  • the cable further comprises a outer layer 7 which covers the protective sheath 6 and is made of a material with elasticity higher than the protective sheath 6 and whose adhesion to the protective sheath 6 is less than the resistance tearing of the outer layer.
  • Layer external 7 is for example made of crosslinked elastomer, or in elastomeric thermoplastic material, that is to say a multiphase polymer comprising a thermoplastic phase and a mixed polymer phase, the polymer obtained can be either in mass form or under cell form, and not naturally adhering to protective shealth.
  • the outer layer 7 has a niche outline, the projecting parts 8 extend in a helix around the cable.
  • the outer layer further includes reinforcing fibers 9, for example aramid fibers, which extend between the parts protruding 8 and thus provide a reinforcement of the layer external 7 in the parts of lesser thickness thereof.
  • the fibers of reinforcement 9 extend like the protruding parts 8, in propeller in a substantially longitudinal direction of the cable.
  • Figure 2 illustrates a second embodiment in which the cable has the same structure base covered with an outer layer 7 produced in a material with higher elasticity than protective sheath 6.
  • the outer layer 7 does not have reinforcing fibers 9 and has a polygonal outer contour whose edges 10 projecting extend in the longitudinal direction of the cable.
  • the outer layer according to the invention can be applied to a cable without metal shield 5 or conductive layers and can have any external contour, including a smooth circular outer contour corresponding to a layer external 7 of constant thickness.
  • a cable can be made with several metallic conductors or with optical fibers extending in a protective sheath itself covered an elastic outer layer.
  • the thickness of the outer layer 7 is adapted to the size of the cable, the efforts to which it risks to be subjected during its installation and to the nature of the soil in which the cable is to be laid.
  • an outer layer having a thickness between 1 mm and 5 mm gave satisfactory results when tests simulating handling, installation and use of the cable.
  • reinforcing fibers can be provided extending lengthwise, or segments of reinforcing fibers distributed randomly in elastic layer 7, the fibers of reinforcement having as main function to distribute a radial impact on the area surrounding the impact point.
  • the protruding parts are shown with widths identical, parts of different widths can be provided, a wider part which can in particular be made to facilitate marking of the cable.

Landscapes

  • Insulated Conductors (AREA)
  • Communication Cables (AREA)
  • Organic Insulating Materials (AREA)
  • Insulating Bodies (AREA)
EP02292568A 2001-10-25 2002-10-17 Leistungs- oder Nachrichtenkabel geeignet zur Eingrabung Expired - Lifetime EP1308968B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0113788A FR2831703B1 (fr) 2001-10-25 2001-10-25 Cable d'energie ou de communication adapte a etre enterre
FR0113788 2001-10-25

Publications (2)

Publication Number Publication Date
EP1308968A1 true EP1308968A1 (de) 2003-05-07
EP1308968B1 EP1308968B1 (de) 2009-01-14

Family

ID=8868700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02292568A Expired - Lifetime EP1308968B1 (de) 2001-10-25 2002-10-17 Leistungs- oder Nachrichtenkabel geeignet zur Eingrabung

Country Status (6)

Country Link
EP (1) EP1308968B1 (de)
AT (1) ATE421155T1 (de)
DE (1) DE60230852D1 (de)
DK (1) DK1308968T3 (de)
ES (1) ES2319618T3 (de)
FR (1) FR2831703B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007120646A2 (en) * 2006-04-11 2007-10-25 General Dynamics Advanced Information Systems, Inc. Grooved jacket for undersea cable and method for manufacturing the same
CN111462948A (zh) * 2020-04-20 2020-07-28 夏纪成 地埋式抗压电缆
CN112071483A (zh) * 2020-08-26 2020-12-11 远东电缆有限公司 一种智慧能源用抗压电缆及其制备方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2996046B1 (fr) 2013-02-08 2014-09-05 Silec Cable Cable tous terrains a denudabilite facilitee
CN105489293A (zh) * 2016-03-07 2016-04-13 广西资优电气设备有限公司 电力线缆
CH713982A2 (de) 2017-07-14 2019-01-15 Studer Aeronautical Ag Elektrokabel für die Stromversorgung von Flugzeugen, Fahrzeugen, Schiffen oder anderen Einrichtungen.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB478517A (en) * 1936-07-25 1938-01-20 British Insulated Cables Ltd Improvements in electric cables
US3793476A (en) * 1973-02-26 1974-02-19 Gen Electric Insulated conductor with a strippable layer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0511611Y2 (de) * 1988-07-26 1993-03-23
GB9915141D0 (en) * 1999-06-30 1999-09-01 Read Well Services Limited Cable

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB478517A (en) * 1936-07-25 1938-01-20 British Insulated Cables Ltd Improvements in electric cables
US3793476A (en) * 1973-02-26 1974-02-19 Gen Electric Insulated conductor with a strippable layer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007120646A2 (en) * 2006-04-11 2007-10-25 General Dynamics Advanced Information Systems, Inc. Grooved jacket for undersea cable and method for manufacturing the same
WO2007120646A3 (en) * 2006-04-11 2008-02-14 Gen Dynamics Advanced Inf Sys Grooved jacket for undersea cable and method for manufacturing the same
CN111462948A (zh) * 2020-04-20 2020-07-28 夏纪成 地埋式抗压电缆
CN112071483A (zh) * 2020-08-26 2020-12-11 远东电缆有限公司 一种智慧能源用抗压电缆及其制备方法

Also Published As

Publication number Publication date
ES2319618T3 (es) 2009-05-11
FR2831703A1 (fr) 2003-05-02
ATE421155T1 (de) 2009-01-15
DK1308968T3 (da) 2009-05-04
EP1308968B1 (de) 2009-01-14
FR2831703B1 (fr) 2003-12-26
DE60230852D1 (de) 2009-03-05

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