EP1383140A1 - Câble multi-fonctionnel pour les télécommunications externes - Google Patents

Câble multi-fonctionnel pour les télécommunications externes Download PDF

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Publication number
EP1383140A1
EP1383140A1 EP02254950A EP02254950A EP1383140A1 EP 1383140 A1 EP1383140 A1 EP 1383140A1 EP 02254950 A EP02254950 A EP 02254950A EP 02254950 A EP02254950 A EP 02254950A EP 1383140 A1 EP1383140 A1 EP 1383140A1
Authority
EP
European Patent Office
Prior art keywords
cable
pairs
outside
multipurpose
core
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.)
Ceased
Application number
EP02254950A
Other languages
German (de)
English (en)
Inventor
Arzate Fermin c/o Servicios Condumex S.A Marquez
Osornio Victor c/o Sevicios Condumex S.A Osornio
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.)
Servicios Condumex SA de CV
Original Assignee
Servicios Condumex SA de CV
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 Servicios Condumex SA de CV filed Critical Servicios Condumex SA de CV
Priority to EP02254950A priority Critical patent/EP1383140A1/fr
Publication of EP1383140A1 publication Critical patent/EP1383140A1/fr
Ceased 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
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • 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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable

Definitions

  • the present invention relates to the development of outside plant cables to be used in Voice, Video, Data and Distribution (VVDD) type communications, and specially to telephone cables with larger bandwidth operation levels while maintain or preserve operation frequencies for voice transmission.
  • VVDD Voice, Video, Data and Distribution
  • telecommunication cables for interior use based on metal conductors with polyolefin insulation, formed into pairs and without shielding insulating them against electromagnetic interferences have had an accelerated development.
  • Said cables are basically focussed on local area networks (LAN), houses, department buildings, or industrial structures, public buildings, intelligent buildings or school centers.
  • LAN local area networks
  • This growth of local area networks has provoked that the users of digital services such as Internet, video on demand, high definition television, teleconferences, voice and fax services request telephone networks flexible enough to offer said services with a higher quality and faster transmission speeds compared to the ones handled currently in the outside plant telephone cables which have remained without important technical changes.
  • USA patent 5,739,473 describes a flame retardant telecommunication cable for office building use; said cable has a conductor array insulated in groups of twisted pairs and the insulation used in the core group is different from the insulation used in the surrounding groups.
  • the main characteristic of this system is its structure and the use of a fluorinated copolymer.
  • US patent 4,319,071 describes a cable for telephone communication purposes with high multipair with small conductors the main characteristic of which is a liquid filling based on waterproof paraffin oils.
  • the applicant has developed a multipurpose telephone cable with larger bandwidth operation levels, from 0 to 100 MHz conserving the operation frequencies for voice transmission.
  • the cables object of the instant invention present an improvement regarding electromagnetic interference levels between adjacent pairs or between sectors or groups constituting the cable and multipair telecommunication cables are obtained with constructions containing from 2 to 600 pairs.
  • the geometric formation of the cables may vary depending on the final installation purpose. Said installation can be directly on the ground or in telephone ducts when they are rounded cables. In the case of air installations, the cable developed presents a mechanical support element that can be metallic or not. When the cable developed shows a reinforcement mechanical element, the final appearance of the cable will be in the shape of an "8", called self-supporting cable, to differentiate them from rounded cable.
  • the cable according to the instant invention is an electrically improved cable. Specially regarding its near end crosstalk (NEXT) values and electromagnetic interference level between groups.
  • the interference level between adjacent sectors or groups of the same cable will generally have a minimum value of 9 db (decibels) in order to ensure an improved electric performance compared to the electromagnetic interference levels currently known in conventional telephone cables.
  • “shorter” (maximized) pairing lays lengths are used, compared to conventional outside plant telephone cables.
  • the length reduction of the pairing lay lengths provides the cable the capacity to work in a larger bandwidth because, with the reduction of pairing lay lengths a cable is obtained with better balanced pairs, minimizing thus the electromagnetic induction effects among pairs belonging to the same group and among pairs belonging to different groups (smaller number of disturbers).
  • said cable can used in transmission systems integrating services where better and larger transmission qualities at higher speeds are required, as well as pair multiplexion. Examples of services where said cables can be used are: ISDN (Integrated Service Digital Network), ISBDN (Integrated Service bandwidth Digital Network), xDSL (Digital Subscriber Line), and others.
  • the cable design contemplates diaphony values in operation frequencies up to 100 MHz.
  • the increase regarding the operation bandwidth of VVDD cables permits to increase the number of signals or transmissions circulating through the twisted pairs constituting the cable.
  • the metal conductor used as core conductor in this type of cables presents a smooth and uniform surface finishing as well as a constant diameter. These characteristics contribute globally to provide the cable with better attenuation and increased impedance values, which are important factors in the performance of the electric cable.
  • the insulated material extruded on the core conductor presents 10% maximum eccentricities with regard to the total of insulated conductors. This, in turn, contributes to obtain better mutual capacitance values, and has a positive impact on the final results, especially at (NEXT) electromagnetic interference level between adjacent pairs in the same group or between pairs of different groups or sectors in the finished cable.
  • the multipurpose cable for outside telecommunications 10 figure 1 object of the instant invention shows a practically solid cylindrical section, i.e., without interstices, because of the shape of the union of conductor pairs.
  • Said cable consists of the following pairs: a plurality of metallic electrical conductors 11, for telecommunications, as the main core of the outside plant cable 10, in 19, 22, 24 and 26 AWG gauges, insulated with a polyolefinic material plastic layer 19, fig. 2, presenting a minimum conductor eccentricity, figure 5.
  • Said core is characterized by constructions from 2 to 600 twisted pairs 21 figure 4, formed with optimized lay lengths different among them, fig. 6a, b, c 22 and components of the groups or sectors of the finished cable. It is thus possible to reduce the electromagnetic interference level (NEXT in db). This is obtained making a careful selection of the pairing lay lengths involved and a random assembly of the pairs to form finally the groups or sectors 20, figure 4, of cable components 10 figure 1.
  • Cable manufacturing is conducted through the following steps:
  • the step of pairing VVDD cables with fewer than 10 pairs is conducted separately and then the pairs are cabled to provide the final configuration.
  • the pairing and cabling steps are selected in such way that the electromagnetic induction (NEXT) between pairs of groups or between different groups or sectors is minimized, obtaining thus a superior electrical performance, specially with regard to NEXT.
  • the insulated conductors are assembled in pairs with pairing lays optimized to ensure a high electrical performance of the cable, specially regarding the NEXT parameter between pairs of the same group or between pairs of different groups or sectors.
  • pairs are grouped in sectors of 10 pairs, in the case of cables of up 100 pairs or in groups (5 sectors of 10 pairs) of 50 pairs in the case of cables consisting of 150 to 600 pairs. Sectors or groups are guided through assembling devices to be cabled and to form the core final assembly.
  • the cable core is impregnated with the filling material (jelly) through an immersion process ensuring thus core waterproofing.
  • the application of an outside cover based on low and medium density polyolefins is also conducted in an extruder, using for this purpose extrusion guides and dies according to the final dimensions of the cable.
  • the shielded core is impregnated with a flooding compound, the function of which is to prevent humidity penetration inside the cable and reduce the corrosion of metal elements such as shield or armor.

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  • Insulated Conductors (AREA)
EP02254950A 2002-07-15 2002-07-15 Câble multi-fonctionnel pour les télécommunications externes Ceased EP1383140A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02254950A EP1383140A1 (fr) 2002-07-15 2002-07-15 Câble multi-fonctionnel pour les télécommunications externes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02254950A EP1383140A1 (fr) 2002-07-15 2002-07-15 Câble multi-fonctionnel pour les télécommunications externes

Publications (1)

Publication Number Publication Date
EP1383140A1 true EP1383140A1 (fr) 2004-01-21

Family

ID=29762701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02254950A Ceased EP1383140A1 (fr) 2002-07-15 2002-07-15 Câble multi-fonctionnel pour les télécommunications externes

Country Status (1)

Country Link
EP (1) EP1383140A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1580767A3 (fr) * 2004-03-26 2006-01-25 Servicios Condumex S.A. De C.V. Câble multi-fonctionnel aérien renforcé pour des télécommunications externes.
CN105931749A (zh) * 2016-07-01 2016-09-07 杭州乐荣电线电器有限公司 一种柔软高频电线结构
CN109411158A (zh) * 2018-10-29 2019-03-01 江苏宏鹏电气科技有限公司 一种塑料电缆的生产工艺

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020005291A1 (en) * 2000-07-11 2002-01-17 Arzate Fermin Marquez Multipurpose cable for outside telecommunications

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020005291A1 (en) * 2000-07-11 2002-01-17 Arzate Fermin Marquez Multipurpose cable for outside telecommunications

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1580767A3 (fr) * 2004-03-26 2006-01-25 Servicios Condumex S.A. De C.V. Câble multi-fonctionnel aérien renforcé pour des télécommunications externes.
CN105931749A (zh) * 2016-07-01 2016-09-07 杭州乐荣电线电器有限公司 一种柔软高频电线结构
CN109411158A (zh) * 2018-10-29 2019-03-01 江苏宏鹏电气科技有限公司 一种塑料电缆的生产工艺

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