EP2294161B1 - Ensemble gaine pour câbles, conservant sa fonction et ses propriétés d'isolation en cas d'incendie - Google Patents

Ensemble gaine pour câbles, conservant sa fonction et ses propriétés d'isolation en cas d'incendie Download PDF

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Publication number
EP2294161B1
EP2294161B1 EP09757241A EP09757241A EP2294161B1 EP 2294161 B1 EP2294161 B1 EP 2294161B1 EP 09757241 A EP09757241 A EP 09757241A EP 09757241 A EP09757241 A EP 09757241A EP 2294161 B1 EP2294161 B1 EP 2294161B1
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EP
European Patent Office
Prior art keywords
layer
conductor
composition
insulation
fire
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.)
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Application number
EP09757241A
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German (de)
English (en)
Other versions
EP2294161A1 (fr
Inventor
Hermann-Josef Jansen
Benjamin Kluge-Engel
Michael Ingenhaag
Walter Sonnenschein
Michael Kittler
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.)
Prysmian Kabel und Systeme GmbH
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Prysmian Kabel und Systeme GmbH
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Publication date
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Publication of EP2294161A1 publication Critical patent/EP2294161A1/fr
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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
    • H01B7/29—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 a wire for use in electrical cables with a conductor enclosing fire-resistant insulation on the basis of crosslinkable polymers with ceramic-forming additives, in which the insulation comprises a first layer consisting of a first composition and the first layer outside enclosing second layer consisting of a second composition, wherein the first and second compositions are adjusted so that the formation of a ceramic in the first layer and in the second layer adjusts at different temperatures.
  • Such a vein is in terms of technical background and in terms of the design of correspondingly fire-resistant and therefore the isolation and functional integrity of the wire or a cable constructed thereon in case of fire ensuring compositions for producing the insulation, for example in the DE 197 17 645 C2 described.
  • a layer produced from the correspondingly fire-resistant, adjusted composition is usually applied to the conductor, whereupon a further jacket of the conductor consisting of further insulation layers and / or layers of a suitably suitable jacket material is constructed.
  • the individual strands are usually grouped into multi-stranded or multi-stranded stranded souls, which are used for
  • the structure of a thermal stress forming a ceramic insulation for a cable is still in the generic EP 1 347 464 A1 described.
  • the known insulation consists of two layers comprising different, consisting of crosslinkable polymers and ceramic-forming additives containing compositions. There is an indication that variation in the addition of the glass forming additives can change the temperature range within which a ceramic layer forms.
  • an optical cable with an optical waveguide is known in the cable sheath an inner protective layer of a heat-resistant material such as glass and / or ceramic and / or mica is arranged such that it forms a tubular structure for the protection of the optical waveguide after a flame, wherein a second outer cladding layer of a fire-retardant material, in particular a FRNC material consists.
  • a jacket construction can not be sufficient for a high load in case of fire.
  • the invention has for its object to improve the insulation and functional integrity in case of fire in a vein mentioned above.
  • the invention provides for this purpose that the first and the second composition are set such that the formation of the ceramic in the composition forming the second outer layer in a temperature range between 200 ° C and 600 ° Celsius, and thus in a lower temperature range than in the inner first layer-forming composition having a ceramic formation in a temperature range above 600 ° Celsius.
  • the invention has the advantage that the formation of the ceramization of the second outer layer already begins in a lower temperature range and takes place when the temperature begins to rise in the event of fire, the conductor not reaching the upper temperature limit for the ceramization of the outer second layer with this layer, but by the inner first, a composition with a higher Keramleiterstemperatur Societyende and the conductor immediately enclosing first layer is isolated.
  • Ceramizing fillers are preferably used as ceramic-forming additives, as they are exemplarily cited in the closest prior art DE 197 17 645 C2 are described, either in pure form of the corresponding substances mentioned or in the form of mixtures of these substances, which can be set, for example by the use of suitable mixtures different ceramization of the ceramic-forming additives.
  • the ceramizing fillers also include their precursor compounds, that is to say substances which, for example, undergo the action of heat in the corresponding ceramizing fillers. By their use, different ceramification temperatures can be set for the ceramic-forming additives to be introduced in the two layers of the cable insulation.
  • the invention also encompasses the inclusion of the formation of glassy coatings on the ceramic surfaces forming on exposure to temperature by addition of suitable glass formers, as likewise disclosed in US Pat DE 197 17 645 C2 is described. As a result of this, in the end, those temperatures can be set at different levels at which the formation of the protective jacket takes place within the two layers of the core insulation in the case of a fire.
  • the invention can be realized with filled silicone compounds and EPR-based compounds with glass formers.
  • the invention is therefore to be realized with all known to one of ordinary skill and suitable for the respective requirements and to be selected in detail compositions, so that it does not depend on the concrete structure of the compositions for the formation of the two layers in the individual case.
  • the skilled person can resort to all known basic materials for the construction of the insulation, as long as he observes that in the two different layers forming compositions are each contained in different temperature ranges ceramizing additives.
  • the temperature ranges mentioned should be understood only as an example. Depending on the technical requirements of the fire resistance of cable insulation or wire insulation other temperature ranges for the ceramization of ceramic-forming additives can be selected in individual cases, for example, a ceramization temperature of 700 ° C in the outer second layer and a ceramization temperature of 900 ° C in the inner first layer.
  • a ceramization temperature of 700 ° C in the outer second layer and a ceramization temperature of 900 ° C in the inner first layer.
  • the person skilled in the art has different basic components, generally based on crosslinkable polymers, and different ceramic additives and mixtures thereof, as described.
  • At least one further layer of an insulating material and / or a jacket material is applied to the fire-resistant insulation.
  • the inner conductor may be formed as a bare or metallumhüllter copper conductor, also as einrähtiger, Hodrähtiger or finely stranded copper conductor.
  • an inner conductor 10 is enclosed by a first inner layer 11, wherein the inner first layer 11 is surrounded by a second, outer layer 12.
  • the two layers 11 and 12 each consist of different compositions based on crosslinkable polymers which, due to their ceramic-forming additives such as fillers and / or glass formers, have different temperature ranges of conversion from the elastomeric region to the ceramic region.
  • ceramic-forming additives such as fillers and / or glass formers
  • compositions can each be designed so that the insulation in the transition region support each other electrically and mechanically.
  • the temperature at which the ceramization of the fillers used in the outer second layer 12 begins in one embodiment of the invention at about 200 ° C, while the ceramization of the corresponding used different mineral fillers of the inner first layer 11 above 600 ° Celsius lies.

Landscapes

  • Insulated Conductors (AREA)

Claims (8)

  1. Fil destiné à être utilisé dans des câbles électriques avec une isolation ignifuge entourant un conducteur (10) à base de polymères réticulables avec des additifs formant de la céramique, l'isolation présentant une première couche (11) constituée d'une première composition et une deuxième couche (12) entourant extérieurement la première couche (11) et constituée d'une deuxième composition, la première et la deuxième composition étant ajustées de telle sorte que la formation d'une céramique dans la première couche (11) et dans la deuxième couche (12) se produit à des températures différentes, caractérisé en ce que la première et la deuxième composition sont ajustées de telle sorte que la formation de la céramique dans la composition formant la deuxième couche extérieure (12) se produit dans une plage de température comprise entre 200° Celsius et 600° Celsius et donc dans une plage de température inférieure à celle de la composition formant la première couche intérieure (11) dans laquelle la céramique se forme dans une plage de température supérieure à 600° Celsius.
  2. Fil selon la revendication 1, caractérisé en ce qu'au moins une autre couche de matière isolante et/ou de matière enveloppante est appliquée sur l'isolation ignifuge constituée des deux couches (11, 12).
  3. Fil selon la revendication 1 ou 2, caractérisé en ce que le conducteur (10) est en cuivre.
  4. Fil selon la revendication 3, caractérisé en ce que le conducteur (10) est réalisé sous forme de conducteur en cuivre nu.
  5. Fil selon la revendication 3, caractérisé en ce que le conducteur (10) est réalisé sous forme de conducteur en cuivre revêtu de métal.
  6. Fil selon l'une quelconque des revendications 3 à 5, caractérisé en ce que le conducteur en cuivre (10) est réalisé sous forme de monobrin.
  7. Fil selon l'une quelconque des revendications 3 à 5, caractérisé en ce que le conducteur en cuivre (10) est réalisé sous forme de multibrins.
  8. Fil selon l'une quelconque des revendications 3 à 5, caractérisé en ce que le conducteur en cuivre (10) est réalisé sous forme de brins fins.
EP09757241A 2008-05-30 2009-05-29 Ensemble gaine pour câbles, conservant sa fonction et ses propriétés d'isolation en cas d'incendie Active EP2294161B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008026062 2008-05-30
PCT/EP2009/003863 WO2009146858A1 (fr) 2008-05-30 2009-05-29 Ensemble gaine pour câbles, conservant sa fonction et ses propriétés d'isolation en cas d'incendie

Publications (2)

Publication Number Publication Date
EP2294161A1 EP2294161A1 (fr) 2011-03-16
EP2294161B1 true EP2294161B1 (fr) 2011-11-16

Family

ID=41131225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09757241A Active EP2294161B1 (fr) 2008-05-30 2009-05-29 Ensemble gaine pour câbles, conservant sa fonction et ses propriétés d'isolation en cas d'incendie

Country Status (7)

Country Link
US (1) US8642889B2 (fr)
EP (1) EP2294161B1 (fr)
AT (1) ATE533828T1 (fr)
AU (1) AU2009254219B2 (fr)
BR (1) BRPI0912116B1 (fr)
ES (1) ES2381622T3 (fr)
WO (1) WO2009146858A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102280187B (zh) * 2011-08-02 2012-11-21 中国西电集团公司 一种耐油耐火绝缘单线及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534735B1 (fr) * 1982-10-15 1985-07-05 Habia Sa Revetement isolant
DE19517392A1 (de) 1995-05-11 1996-11-14 Siemens Ag Optisches Kabel mit mindestens einer Schutzschicht aus hitzebeständigem Material
DE19717645C2 (de) 1997-04-25 2001-01-18 Daetwyler Ag Altdorf Keramisierbare flammwidrige Zusammensetzung, Verfahren zur Herstellung und deren Verwendung
JP3830023B2 (ja) * 2001-01-26 2006-10-04 矢崎総業株式会社 耐火ケーブル
FR2837614B1 (fr) * 2002-03-22 2004-06-18 Nexans Composition isolante pour cable electrique de securite
US7304245B2 (en) 2003-03-31 2007-12-04 Ceram Polymerik Pry Ltd Cable and article design for fire performance

Also Published As

Publication number Publication date
US8642889B2 (en) 2014-02-04
BRPI0912116A2 (pt) 2015-11-03
ATE533828T1 (de) 2011-12-15
BRPI0912116B1 (pt) 2018-11-06
AU2009254219A1 (en) 2009-12-10
ES2381622T3 (es) 2012-05-30
US20110139487A1 (en) 2011-06-16
EP2294161A1 (fr) 2011-03-16
AU2009254219B2 (en) 2014-11-06
WO2009146858A1 (fr) 2009-12-10

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