EP2294161A1 - Aderkonstruktion für kabel mit im brandfall geltendem isolations-/funktionserhalt - Google Patents
Aderkonstruktion für kabel mit im brandfall geltendem isolations-/funktionserhaltInfo
- Publication number
- EP2294161A1 EP2294161A1 EP09757241A EP09757241A EP2294161A1 EP 2294161 A1 EP2294161 A1 EP 2294161A1 EP 09757241 A EP09757241 A EP 09757241A EP 09757241 A EP09757241 A EP 09757241A EP 2294161 A1 EP2294161 A1 EP 2294161A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- conductor
- insulation
- fire
- ceramic
- 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
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 19
- 238000010276 construction Methods 0.000 title description 9
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 239000004020 conductor Substances 0.000 claims abstract description 23
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 239000000654 additive Substances 0.000 claims abstract description 9
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 7
- 229920000642 polymer Polymers 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 33
- 238000002468 ceramisation Methods 0.000 description 11
- 239000000945 filler Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000012764 mineral filler Substances 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 238000000576 coating method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000011254 layer-forming composition Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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 fire-resistant insulation of its inner conductor.
- Such a wire is described in terms of the 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 DE 197 17 645 C2.
- 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 Manufacture of electrical cables with improved behavior in case of fire in terms of their isolation and functional integrity can be used.
- 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 is a tubular structure for a flame forms the protection of the optical waveguide, wherein a second outer cladding layer consists of a fire-retardant material, in particular a FRNC material.
- 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 a construction of the core construction with a first inner layer enclosing the conductor, consisting of a first composition and a second layer surrounding the first layer, consisting of a second composition, wherein the formation of a ceramic in the second outer layer forming the second composition in a lower temperature range than in the inner first layer-forming composition.
- the invention has the advantage that when the onset of temperature in the event of fire, the ceramization of the second outer layer already begins in a lower temperature range and takes place, the conductor is not in contact with this when reaching the upper temperature limit for the ceramization of the outer second layer Layer stands, but by contrast, through the inner first, a composition with a higher Keramleiterstemperatur Suiteende and the conductor immediately enclosing first layer is isolated.
- Ceramizing fillers are preferably used as ceramic-forming additives, as are described by way of example in DE 197 17 645 C2 cited as the closest prior art, either in pure form of the corresponding substances or in the form of mixtures of these substances, for example can set different ceramization temperatures of the ceramic-forming additives by the use of suitable mixtures.
- 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 which form on exposure to temperature by addition of suitable glass formers, as likewise described in DE 197 17 645 C2. 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 thus 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 specific 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 notes that in the two different layers forming compositions are each contained in different temperature ranges ceramizing additives.
- the ceramic formation in the outer second layer takes place in a temperature range between 200 ° Celsius and 600 ° Celsius and the ceramic formation in the inner layer in a temperature range above 600 ° Celsius.
- temperature ranges are intended to be understood only as examples.
- 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.
- the person skilled in the art has different basic components, generally based on crosslinkable polymers, and different ceramizing additives and mixtures thereof, as described. It may further be provided that 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 1 1, wherein the inner first layer 1 1 is surrounded by a second, outer layer 12.
- the two layers 1 1 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 temperature of the corresponding used different mineral fillers of the inner first layer 1 1 above 600 ° Celsius is.
- further layers of insulating material or cladding material may be applied to complete the vein construction.
Landscapes
- Insulated Conductors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008026062 | 2008-05-30 | ||
PCT/EP2009/003863 WO2009146858A1 (de) | 2008-05-30 | 2009-05-29 | Aderkonstruktion für kabel mit im brandfall geltendem isolations-/funktionserhalt |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2294161A1 true EP2294161A1 (de) | 2011-03-16 |
EP2294161B1 EP2294161B1 (de) | 2011-11-16 |
Family
ID=41131225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09757241A Active EP2294161B1 (de) | 2008-05-30 | 2009-05-29 | Aderkonstruktion für kabel mit im brandfall geltendem isolations-/funktionserhalt |
Country Status (7)
Country | Link |
---|---|
US (1) | US8642889B2 (de) |
EP (1) | EP2294161B1 (de) |
AT (1) | ATE533828T1 (de) |
AU (1) | AU2009254219B2 (de) |
BR (1) | BRPI0912116B1 (de) |
ES (1) | ES2381622T3 (de) |
WO (1) | WO2009146858A1 (de) |
Families Citing this family (1)
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)
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 |
KR101036558B1 (ko) * | 2003-03-31 | 2011-05-24 | 올렉스 오스트레일리아 피티와이 리미티드 | 내화 케이블 및 물품 디자인 |
-
2009
- 2009-05-29 EP EP09757241A patent/EP2294161B1/de active Active
- 2009-05-29 BR BRPI0912116A patent/BRPI0912116B1/pt not_active IP Right Cessation
- 2009-05-29 ES ES09757241T patent/ES2381622T3/es active Active
- 2009-05-29 US US12/995,396 patent/US8642889B2/en not_active Expired - Fee Related
- 2009-05-29 AT AT09757241T patent/ATE533828T1/de active
- 2009-05-29 WO PCT/EP2009/003863 patent/WO2009146858A1/de active Application Filing
- 2009-05-29 AU AU2009254219A patent/AU2009254219B2/en not_active Ceased
Non-Patent Citations (1)
Title |
---|
See references of WO2009146858A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009146858A1 (de) | 2009-12-10 |
AU2009254219A1 (en) | 2009-12-10 |
ATE533828T1 (de) | 2011-12-15 |
EP2294161B1 (de) | 2011-11-16 |
AU2009254219B2 (en) | 2014-11-06 |
US8642889B2 (en) | 2014-02-04 |
BRPI0912116B1 (pt) | 2018-11-06 |
BRPI0912116A2 (pt) | 2015-11-03 |
US20110139487A1 (en) | 2011-06-16 |
ES2381622T3 (es) | 2012-05-30 |
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