EP0802544A1 - Vierer mit verbundenen isolierten Leitern - Google Patents

Vierer mit verbundenen isolierten Leitern Download PDF

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Publication number
EP0802544A1
EP0802544A1 EP97400850A EP97400850A EP0802544A1 EP 0802544 A1 EP0802544 A1 EP 0802544A1 EP 97400850 A EP97400850 A EP 97400850A EP 97400850 A EP97400850 A EP 97400850A EP 0802544 A1 EP0802544 A1 EP 0802544A1
Authority
EP
European Patent Office
Prior art keywords
conductors
insulated conductors
quad
cavity
quarter
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.)
Withdrawn
Application number
EP97400850A
Other languages
English (en)
French (fr)
Inventor
Jean-Louis Cancian
Jean Gombert
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.)
Sagem SA
Original Assignee
Societe Anonyme de Telecommunications SAT
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 Societe Anonyme de Telecommunications SAT filed Critical Societe Anonyme de Telecommunications SAT
Publication of EP0802544A1 publication Critical patent/EP0802544A1/de
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00Communication cables or conductors
    • H01B11/005Quad constructions

Definitions

  • the present invention relates to a fourth.
  • star quads used in telecommunication power lines.
  • the star quads consist of two pairs of insulated conductors arranged at the top of a square, the two conductors of the same pair being arranged along a diagonal of the square.
  • the conductors must be twisted and the pitch must be all the shorter as the requested speed is high.
  • local networks are asked to transmit rates of 150 Mbits / s or even more by signals at frequencies of 100 MHz or more.
  • star quads comprising insulated conductors arranged in a cylindrical tube of extruded synthetic material.
  • the conductors In order for the conductors to be properly held, in particular during the handling of wiring during which several fourths are brought together to form a cable, it is necessary that the tube is fairly rigid and thick enough. Quarters of known structure are therefore difficult to handle.
  • Document DE-A-25 16 830 also discloses a quarter star in which non-insulated conductors are arranged in cells of a central rod and held in place in these cells by extruding around the conductors a dielectric material in which the conductors are embedded.
  • a quarter star in which non-insulated conductors are arranged in cells of a central rod and held in place in these cells by extruding around the conductors a dielectric material in which the conductors are embedded.
  • Document US-A-3,610,814 also discloses a fourth star comprising insulated conductors placed side by side so as to define a central cavity. A sticky thermoplastic filling material is placed in the central cavity and around the insulated conductors. Although ensuring a good hold in position, a quarter of this type is very rigid.
  • double pair quads are known in which four insulated conductors are twisted in pairs generally arranged in a double tube to produce a fourth.
  • a quarter comprising four insulated conductors, characterized in that the insulated conductors are joined to each other to form an assembly comprising a curvilinear external contour covered by a mass of dielectric material and an empty central cavity or filled with '' a sealing material that does not reduce the flexibility of the fourth.
  • the mass of dielectric material ensures that the insulated conductors are maintained in a precise position and the fourth keeps flexibility due to the absence of dielectric material in the cavity. central delimited by conductors or very low resistance to bending of the sealing material introduced therein.
  • the fourth star comprises, in a manner known per se, four conductors 1 isolated by a solid or cellular dielectric material 2 such as polyethylene, polypropylene, polyvinyl chloride or a fluorinated polymer.
  • a solid or cellular dielectric material 2 such as polyethylene, polypropylene, polyvinyl chloride or a fluorinated polymer.
  • the insulated conductors are placed side by side to form an assembly having a curvilinear external contour which is covered by a mass of dielectric material 3, the central cavity 4 between the contiguous conductors not being filled with dielectric material.
  • the fourth according to the invention is for example produced by first forming all of the insulated conductors joined together.
  • This assembly is obtained by making a twist of four insulated conductors, which can easily be obtained on a traditional wiring machine.
  • the assembly thus obtained is then passed through an extrusion head while maintaining the assembly according to the desired twisting pitch.
  • the insulated conductors then remain suitably contiguous to each other and the extruded dielectric material covers the curvilinear external contour of the assembly without penetrating into the cavity 4.

Landscapes

  • Insulated Conductors (AREA)
  • Communication Cables (AREA)
EP97400850A 1996-04-19 1997-04-15 Vierer mit verbundenen isolierten Leitern Withdrawn EP0802544A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9604924A FR2747829B1 (fr) 1996-04-19 1996-04-19 Quarte comportant des conducteurs isoles accoles
FR9604924 1996-04-19

Publications (1)

Publication Number Publication Date
EP0802544A1 true EP0802544A1 (de) 1997-10-22

Family

ID=9491373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400850A Withdrawn EP0802544A1 (de) 1996-04-19 1997-04-15 Vierer mit verbundenen isolierten Leitern

Country Status (2)

Country Link
EP (1) EP0802544A1 (de)
FR (1) FR2747829B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2940499A1 (fr) * 2008-12-22 2010-06-25 Nexans Assemblage de fils conducteurs electriques isoles torsades
ITMC20120088A1 (it) * 2012-11-21 2014-05-22 Simone Marini Mezzo trasmissivo per segnali elettrici analogici/ digitali bilanciati, per il supporto dei protocolli ip e poe e dotato di caratteristiche meccaniche peculiari

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB389118A (en) * 1931-09-10 1933-03-10 John Richard Pheazey Improvements in or relating to electric signalling cables
CH504082A (de) * 1969-02-24 1971-02-28 Huber+Suhner Ag Adergruppe aus mehreren Kabeladern mit elektrischen Leitern, Verfahren zu deren Herstellung und Vorrichtung zur Durchführung des Verfahrens
US3610814A (en) * 1969-12-08 1971-10-05 Bell Telephone Labor Inc Spiral-four quad structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB389118A (en) * 1931-09-10 1933-03-10 John Richard Pheazey Improvements in or relating to electric signalling cables
CH504082A (de) * 1969-02-24 1971-02-28 Huber+Suhner Ag Adergruppe aus mehreren Kabeladern mit elektrischen Leitern, Verfahren zu deren Herstellung und Vorrichtung zur Durchführung des Verfahrens
US3610814A (en) * 1969-12-08 1971-10-05 Bell Telephone Labor Inc Spiral-four quad structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2940499A1 (fr) * 2008-12-22 2010-06-25 Nexans Assemblage de fils conducteurs electriques isoles torsades
WO2010072934A1 (fr) * 2008-12-22 2010-07-01 Nexans Assemblage de fils conducteurs electriques isoles torsades
CN102257577B (zh) * 2008-12-22 2013-12-25 尼克桑斯公司 扭绞绝缘电线组件
ITMC20120088A1 (it) * 2012-11-21 2014-05-22 Simone Marini Mezzo trasmissivo per segnali elettrici analogici/ digitali bilanciati, per il supporto dei protocolli ip e poe e dotato di caratteristiche meccaniche peculiari

Also Published As

Publication number Publication date
FR2747829B1 (fr) 1998-05-22
FR2747829A1 (fr) 1997-10-24

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