EP2742514B1 - Câble électrique - Google Patents

Câble électrique Download PDF

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Publication number
EP2742514B1
EP2742514B1 EP12740048.9A EP12740048A EP2742514B1 EP 2742514 B1 EP2742514 B1 EP 2742514B1 EP 12740048 A EP12740048 A EP 12740048A EP 2742514 B1 EP2742514 B1 EP 2742514B1
Authority
EP
European Patent Office
Prior art keywords
cable
layer
outer sheath
electric cable
conductor
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.)
Active
Application number
EP12740048.9A
Other languages
German (de)
English (en)
Other versions
EP2742514A1 (fr
Inventor
Raphael König
Heiner Gradwohl
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.)
Studer Cables AG
Original Assignee
Leoni Studer AG
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Filing date
Publication date
Application filed by Leoni Studer AG filed Critical Leoni Studer AG
Publication of EP2742514A1 publication Critical patent/EP2742514A1/fr
Application granted granted Critical
Publication of EP2742514B1 publication Critical patent/EP2742514B1/fr
Active 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
    • 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
    • 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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
    • 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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame

Definitions

  • the invention relates to an electric cable with a conductor, with at least one surrounding insulating layer and with an outer sheath.
  • Electric cables in particular medium voltage cables with a higher voltage range, which can be at 1000 V, must continue to function in the event of a fire for a defined period of time, without the voltage collapsing or the current being cut off.
  • Such cables are sometimes used where the security of the power supply to the safety of persons or the availability of necessary equipment must be ensured even in case of fire.
  • These may be skyscrapers, hospitals, metro stations, metro services, tunnel power supplies, airports, etc., ie those infrastructures that have high numbers of people or large and expensive property and / or require the highest level of availability.
  • EP-A-0 017 609 discloses a plastic-insulated electrical cable with a flame-retardant inner cable, which is provided with an intumescent in case of fire inner jacket.
  • a filler having esterifiable hydroxyl groups and, moreover, it is provided with a catalyzed acid catalyst and a blowing agent.
  • the electrical lines are disadvantageously associated with each individual insulation, which are surrounded by the inner shell, which in turn is enclosed by an outer sheath. Such a cable is thus not suitable for the required power with 1000 V of a medium voltage cable.
  • the present invention has been based on the object to provide an electric cable, which ensures a longer period of operation than known cables in case of fire and yet it is compact and inexpensive to produce in its construction.
  • the object is achieved by arranging at least one intumescent layer surrounding the conductor over the entire cable length, which is integrated in the cable in such a way that it can foam when the electric cable is heated and provides heat protection thereof.
  • Fig. 1 a designed for a single-phase operation electric cable 10 is shown, which is sometimes suitable for medium voltage and high voltage cables, which are used for operating voltages in particular for 1000 V or more.
  • the electric cable 10 has a conductor 12, which in the present case is formed by a strand consisting of a plurality of wires 12 '.
  • a surrounding insulating layer 13 and an outer shell 16 is provided.
  • an intumescent layer 15 extending over the entire cable length is arranged between the insulation layer 13 and the outer sheath 16, which intumesces when the electric cable is heated, thereby providing heat protection over an increased period of time.
  • This intumescent layer 15 is composed essentially of a polymer carrier and expandable graphite. It can be applied to a surrounding the insulating layer 13 band-shaped layer 14 and an inner shell 14 'by bandaging or extrusion.
  • This band-shaped layer 14 in turn is formed for example as a metal shield and it comes to an electrical protective function, which serves as a diffusion barrier against ingress of molecular water and heat dissipation, this to increase the life of the cable.
  • the mechanical protection of the cable 10 forming outer shell 16 is made of such a material and a thickness that this example, in case of fire and a corresponding heating Cracks and / or melts, so that this intumescent layer can foam up to a multiple of the cable outside diameter.
  • the outer shell 16 is also applied by extrusion or by bandaging and it consists, for example, essentially of a polyolefin copolymer.
  • conductor 12 could be surrounded by one or more semiconductor layers, at least one intervening dielectric isolation layer, and / or other layers.
  • a cable can be used, the three inventive, preferably as in Fig. 1 illustrated trained Einleitertiv includes. This can be equipped with an additional jacket, a reinforcement, etc.

Landscapes

  • Insulated Conductors (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Installation Of Indoor Wiring (AREA)

Claims (4)

  1. Câble électrique comprenant un conducteur (12) au moins une couche (13) isolante et une gaine (16) extérieure, au moins une couche (15) intumescente étant disposée sur toute la longueur du câble en l'entourant, couche qui est intégrée dans le câble (10) de manière à mousser au chauffage et à donner une protection de ce câble vis-à-vis de la chaleur, caractérisé en ce qu'au moins une couche (13) isolante entoure le conducteur (12) constitué de plusieurs fils (12'), la au moins une couche (15) intumescente étant disposée entre la couche (13) isolante et la gaine (16) extérieure et composée d'un support polymère et de graphite expansible et la gaine (16) extérieure, formant une protection mécanique du câble (10), étant fabriquée en une matière et en une épaisseur telles, qu'elle se déchire et/ou fond en cas d'incendie et d'un chauffage correspondant de sorte que la couche (15) intumescente peut mousser d'un multiple du diamètre extérieur du câble.
  2. Câble électrique suivant la revendication 1, caractérisé en ce qu'il est prévu entre la couche (13) isolante et la couche (15) intumescente, prévue sous forme de bande ou extrudée, une couche (14) en forme de bande et une gaine (14') intérieure.
  3. Câble électrique suivant la revendication 1 ou 2, caractérisé en ce que la gaine (16) extérieure est déposée par un procédé d'extrusion ou par bandage.
  4. Câble électrique suivant l'une des revendications 1 à 3, caractérisé en ce que la gaine (16) extérieure est composée en deux couches d'un copolymère de polyoléfine.
EP12740048.9A 2011-08-09 2012-07-16 Câble électrique Active EP2742514B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01317/11A CH705184B1 (de) 2011-08-09 2011-08-09 Elektrokabel.
PCT/EP2012/002972 WO2013020630A1 (fr) 2011-08-09 2012-07-16 Câble électrique

Publications (2)

Publication Number Publication Date
EP2742514A1 EP2742514A1 (fr) 2014-06-18
EP2742514B1 true EP2742514B1 (fr) 2016-08-31

Family

ID=46581886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12740048.9A Active EP2742514B1 (fr) 2011-08-09 2012-07-16 Câble électrique

Country Status (5)

Country Link
EP (1) EP2742514B1 (fr)
CH (1) CH705184B1 (fr)
MY (1) MY175367A (fr)
SG (1) SG2014008205A (fr)
WO (1) WO2013020630A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3012930A4 (fr) * 2013-06-19 2017-03-08 Relats, S.A. Gaine de protection contre le feu, thermique et électrique, auto-fermante
ES2439395B1 (es) * 2013-11-15 2014-11-14 Relats, S. A. Funda de protección contra el fuego, térmica y eléctrica autocerrable
CN107731365A (zh) * 2017-09-29 2018-02-23 惠州市鼎丰泰科技有限公司 一种新型导电排
CN110660521B (zh) * 2019-09-30 2021-06-04 江苏亨通线缆科技有限公司 高性能耐火阻燃铁路信号电缆及其制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012071732A1 (fr) * 2010-12-02 2012-06-07 Dow Global Technologies Llc Ignifuge polymère intumescent à base de silicium-phosphore-azote sans halogène
WO2012174712A1 (fr) * 2011-06-21 2012-12-27 Dow Global Technologies Llc Composition polymère ignifuge exempte d'halogène comportant un agent ignifugeant intumescent à base de pipérazine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2915188C2 (de) * 1979-04-10 1983-02-17 Siemens AG, 1000 Berlin und 8000 München Kunststoffisoliertes elektrisches Kabel mit flammwidrigem Innenmantel
US5132054A (en) * 1991-05-16 1992-07-21 Specified Technologies Inc. Composition of matter for a fire retardant intumescent material having two stages of expansion and a process for making thereof
DE10162532C1 (de) * 2001-12-19 2003-10-09 Hilti Ag Expandierbare Graphit-Intercalationsverbindungen, Verfahren zu ihrer Herstellung und ihre Verwendung
US7015398B2 (en) * 2003-03-10 2006-03-21 Gavriel Vexler Communications cable
CA2469534A1 (fr) * 2003-06-18 2004-12-18 Hilti Aktiengesellschaft L'utilisation de composes d'insertion a base de graphite thermoextensibles pour la production de joints de protection contre les incendies et methode pour leur production
EP2102873B1 (fr) * 2006-12-19 2014-07-23 Union Carbide Chemicals & Plastics Technology LLC Câble comprenant une composition d'épaississement par cisaillement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012071732A1 (fr) * 2010-12-02 2012-06-07 Dow Global Technologies Llc Ignifuge polymère intumescent à base de silicium-phosphore-azote sans halogène
WO2012174712A1 (fr) * 2011-06-21 2012-12-27 Dow Global Technologies Llc Composition polymère ignifuge exempte d'halogène comportant un agent ignifugeant intumescent à base de pipérazine

Also Published As

Publication number Publication date
SG2014008205A (en) 2014-04-28
EP2742514A1 (fr) 2014-06-18
CH705184A2 (de) 2013-02-15
WO2013020630A1 (fr) 2013-02-14
CH705184B1 (de) 2015-07-15
MY175367A (en) 2020-06-23

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