EP0809261A2 - Câble électrique résistant au feu ou conducteur électrique résistant au feu et procédé de fabrication - Google Patents

Câble électrique résistant au feu ou conducteur électrique résistant au feu et procédé de fabrication Download PDF

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Publication number
EP0809261A2
EP0809261A2 EP97401017A EP97401017A EP0809261A2 EP 0809261 A2 EP0809261 A2 EP 0809261A2 EP 97401017 A EP97401017 A EP 97401017A EP 97401017 A EP97401017 A EP 97401017A EP 0809261 A2 EP0809261 A2 EP 0809261A2
Authority
EP
European Patent Office
Prior art keywords
flame
retardant material
fire
layer
electrical
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
EP97401017A
Other languages
German (de)
English (en)
Other versions
EP0809261A3 (fr
EP0809261B1 (fr
Inventor
Hans-Joachim Hübner
Gert Warden
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.)
Nexans SA
Original Assignee
Alcatel SA
Alcatel Alsthom Compagnie Generale dElectricite
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 Alcatel SA, Alcatel Alsthom Compagnie Generale dElectricite filed Critical Alcatel SA
Publication of EP0809261A2 publication Critical patent/EP0809261A2/fr
Publication of EP0809261A3 publication Critical patent/EP0809261A3/fr
Application granted granted Critical
Publication of EP0809261B1 publication Critical patent/EP0809261B1/fr
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
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0033—Apparatus or processes specially adapted for manufacturing conductors or cables by electrostatic coating
    • 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 fire-proof electrical cable or a fire-proof electrical line with at least one wire having an electrical conductor and electrical insulation, at least one layer of a flame-retardant material and an outer jacket, and a method for producing such a fire-proof electrical cable or such a fire-proof electrical wire.
  • DE 39 19 502 A1 relates to a method for producing a fire-resistant electrical cable, in which the electrical conductor is wrapped in at least one layer with a mica-coated film or a corresponding tape made of a polymeric material. The wound conductor is then subjected to a temperature treatment and the polymer material is melted and optionally crosslinked. This results in electrical insulation which contains mica in a form parallel to the conductor surface.
  • a method for producing fire-proof insulation in which the continuous conductor is directly coated with a powdery mixture of a briefly non-melting component such as a low-melting glass and mineral substances such as mica or glass-ceramic mixtures and then a temperature treatment for the purpose of melting the binder and mechanical connection of the particles of the powdery mixture is subjected before the electrical plastic or rubber insulation is applied.
  • a briefly non-melting component such as a low-melting glass and mineral substances such as mica or glass-ceramic mixtures
  • the invention is based on the problem of specifying a fire-safe electrical cable or such an electrical line, which is simple and inexpensive to produce at a high production speed, and a corresponding production method.
  • the advantages that can be achieved by the invention are, in particular, that the flocking of an electrical conductor, a wire with electrical insulation or a stranding with multiple wires with the flame-retardant material enables high production speeds and the manufacture of the flame-retardant layer in one operation.
  • the application and drying of the adhesive can take place in a line with the extrusion of the electrical insulation and / or the outer jacket.
  • the cable according to the invention or the line according to the invention has good emergency running properties in the event of a fire, since the electrical insulation is maintained over a period of half an hour or more.
  • even surfaces with the smallest outside diameter can be reliably provided with a layer of flame-retardant material.
  • mica having good electrical insulation properties is used as the flame-retardant material even at high temperatures.
  • FIG. 1 shows a first embodiment
  • FIG. 2 shows a second
  • FIG. 3 shows a third embodiment of a fire-proof electrical cable according to the invention
  • FIG. 4 shows the production of a fire-proof electrical cable or such a cable according to the invention.
  • the fire-safe electrical line 1 shown by way of example in FIG. 1 has an electrical conductor 3 to which a layer 5 of flame-retardant material 7 is directly applied by flocking the circumference of the electrical conductor 3, which is provided with an adhesive, with the powdery flame-retardant material 7, for example with mica. Electrical insulation 9 and an outer jacket 11 are arranged above this.
  • the electrical insulation 9 directly surrounds the electrical conductor 3.
  • a layer 5 of flame-retardant material 7 is applied to the wire 13 consisting of the electrical conductor 3 and the electrical insulation 9.
  • This layer 5 is by flocking the periphery of the insulation 9 provided with an adhesive with a powdered flame retardant material 7 such as. B. mica.
  • An outer jacket 11 is arranged over the layer 5.
  • the fire-proof electrical line 1 shown by way of example in FIG. 3 has three wires 13 stranded with one another around a filler 12. Each of the cores 13 has an electrical conductor 3 and an electrical insulation 9 lying thereover. As shown in FIG. 1, a layer of flame-retardant material can be provided between the electrical conductor 3 and electrical insulation 9. The formed from the three wires 13 Soul 14 is enclosed by an inner jacket 15 filling the gusset. A layer 5 of flame-retardant material 7 is formed over the inner jacket 15, in that the flame-retardant material 7 is applied to the circumference of the inner jacket 15 provided with an adhesive by flocking. To the outside, the line 1 is closed by an outer jacket 11.
  • 4 shows an example of a device for producing fire-proof electrical cables or lines.
  • 4 shows the application of a layer 5 of flame-retardant material 7 to an electrical conductor 3 as an example.
  • this method can also be used in the same way for the application of such a flame-retardant layer to a wire, to a twisted strand or any other strand.
  • a thin layer of an adhesive 23 is first applied to the electrical conductor 3 on all sides when it passes through the device, for example by means of an annular nozzle 21. As an adhesive 23 z. B.
  • a hot melt adhesive which is held in a container 25 by means of a heating device 27 in the molten state and is fed to the ring nozzle 21 by means of a suitable conveying device.
  • the electrical conductor 3 coated with the molten adhesive 23 passes through a flocking chamber 29.
  • the powdery flame-retardant material 7 is set in turbulence. If necessary under the influence of an electrostatic field, the electrical conductor 3 provided with the molten adhesive 23 is evenly flocked with the flame-retardant material 7 as it passes through the flocking chamber 29.
  • the flocking is not in one such flocking chamber 29, but with the help of a special flocking nozzle under the action of an electrostatic field.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulated Conductors (AREA)
EP97401017A 1996-05-24 1997-05-02 Câble électrique résistant au feu ou conducteur électrique résistant au feu et procédé de fabrication Expired - Lifetime EP0809261B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19620963A DE19620963A1 (de) 1996-05-24 1996-05-24 Brandsicheres elektrisches Kabel oder brandsichere elektrische Leitung und Verfahren zur Herstellung
DE19620963 1996-05-24

Publications (3)

Publication Number Publication Date
EP0809261A2 true EP0809261A2 (fr) 1997-11-26
EP0809261A3 EP0809261A3 (fr) 1998-06-03
EP0809261B1 EP0809261B1 (fr) 2002-04-10

Family

ID=7795225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97401017A Expired - Lifetime EP0809261B1 (fr) 1996-05-24 1997-05-02 Câble électrique résistant au feu ou conducteur électrique résistant au feu et procédé de fabrication

Country Status (2)

Country Link
EP (1) EP0809261B1 (fr)
DE (2) DE19620963A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106024168A (zh) * 2016-07-27 2016-10-12 浙江秦山电缆有限公司 一种高绝缘电阻的阻燃四芯电缆线及其制备方法
EP3142125A1 (fr) * 2015-09-09 2017-03-15 Lapp Engineering & Co. Cable

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10236288A1 (de) * 2002-08-08 2004-02-26 Nexans Elektrisches Kabel

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976325C (de) * 1951-11-13 1963-06-27 Licentia Gmbh Verfahren zur Herstellung von Schichtstoffen aus Glimmerblaettchen
DE1891839U (de) * 1964-03-06 1964-04-30 Continental Elektro Ind Ag Elektrische gummi- oder kunststoffisolierte einfach- oder mehrfachleitung.
US4131690A (en) * 1975-05-05 1978-12-26 Northern Electric Company Limited Method of powder coating an insulated electrical conductor
NO141732C (no) * 1977-01-12 1984-09-04 Norsk Kabelfabrik As Flammebestandig kabelkonstruksjon
FR2411475A1 (fr) * 1977-12-06 1979-07-06 Thomson Brandt Cable electrique resistant a la propagation de l'incendie, et procede de fabrication d'un tel cable
DE3007341A1 (de) * 1980-02-27 1981-09-10 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Brandsicheres kunststoffisoliertes elektrisches kabel oder leitung
DE8022502U1 (de) * 1980-08-23 1980-11-20 Felten & Guilleaume Carlswerk Ag, 5000 Koeln Graphitiervorrichtung für die Leitschichten elektrischer Kabel
DE3919502A1 (de) * 1989-06-15 1990-12-20 Kabelmetal Electro Gmbh Ein- oder mehradriges elektrisches kabel
HU201626B (en) * 1989-09-05 1990-11-28 Magyar Kabel Muevek Device for making surface layer on work pieces moving longitudinally particularly by use of dusty integumentary material in cable industry
DE4437596A1 (de) * 1994-10-20 1996-04-25 Daetwyler Ag Flammwidrige Zusammensetzung zur Herstellung von elektrischen Kabeln mit Isolations- und/oder Funktionserhalt

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3142125A1 (fr) * 2015-09-09 2017-03-15 Lapp Engineering & Co. Cable
CN106024168A (zh) * 2016-07-27 2016-10-12 浙江秦山电缆有限公司 一种高绝缘电阻的阻燃四芯电缆线及其制备方法

Also Published As

Publication number Publication date
EP0809261A3 (fr) 1998-06-03
EP0809261B1 (fr) 2002-04-10
DE19620963A1 (de) 1997-11-27
DE59706935D1 (de) 2002-05-16

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