EP2511913B1 - Electrical cable - Google Patents

Electrical cable Download PDF

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Publication number
EP2511913B1
EP2511913B1 EP20110305435 EP11305435A EP2511913B1 EP 2511913 B1 EP2511913 B1 EP 2511913B1 EP 20110305435 EP20110305435 EP 20110305435 EP 11305435 A EP11305435 A EP 11305435A EP 2511913 B1 EP2511913 B1 EP 2511913B1
Authority
EP
European Patent Office
Prior art keywords
insulation
conductors
characterized
line according
line
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.)
Active
Application number
EP20110305435
Other languages
German (de)
French (fr)
Other versions
EP2511913A1 (en
Inventor
Peter Ulfig
Walter Winkelbauer
Christian Dr. Cornelissen
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
Nexans SA
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 Nexans SA filed Critical Nexans SA
Priority to EP20110305435 priority Critical patent/EP2511913B1/en
Publication of EP2511913A1 publication Critical patent/EP2511913A1/en
Application granted granted Critical
Publication of EP2511913B1 publication Critical patent/EP2511913B1/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00Communication cables or conductors
    • H01B11/02Cables with twisted pairs or quads
    • H01B11/06Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screen
    • H01B11/10Screens specially adapted for reducing interference from external sources
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/04Flexible cables, conductors, or cords, e.g. trailing cables
    • H01B7/041Flexible cables, conductors, or cords, e.g. trailing cables attached to mobile objects, e.g. portable tools, elevators, mining equipment, hoisting cables
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/003Power cables including electrical control or communication wires

Description

  • The invention relates to an electrical line having at least two conductors surrounded by insulation conductors, which are stranded together and surrounded by a common electric screen, is mounted on the all around a layer of insulating material ( EP 1 134 749 A1 ).
  • Such lines are used for example for the transmission of telecommunications signals. Important for such lines is an electrically effective screen, which retains its function unchanged even after frequent bending of the line. Also of importance are the dimensions of the lines, which should be as small as possible, for example, if such a line in the soul of a power cable or a power line as control purposes serving additional element should be arranged.
  • The initially mentioned known line after the EP 1 134 749 A1 has two wires, which have an example of polyethylene (PE) or polypropylene (PP) insulation. The two cores They are surrounded by an inner sheath made of compressible insulating material. Above the inner shell, a braided electrical, for example made of copper wires existing electric screen is mounted, which is surrounded by a formed by two wound films of insulating material protective layer. The insulating properties of the insulating material of the wires are not very high, so that the wall thickness of the insulation surrounding the conductor must be made relatively thick. The materials PE and PP used are also not suitable because they melt when applying a rubber sheath when such a line is placed in an appropriate power cable or in a power line. The outer diameter of the pipe is correspondingly large. In addition, the wires used for the screen Braid can easily break after repeated bending of the line, whereby the electrical shielding of the line is at least deteriorated.
  • The invention has for its object to make the above-described line so that it is electrically effectively shielded with reduced outer diameter in the long term.
  • This object is achieved according to the invention characterized
    • that the insulation of the cores consists of a low-resistance, cross-linked elastomeric insulating material whose insulation resistance constant at room temperature is greater than 4,000 MΩkm, and
    • in that the screen consists of a polyamide-based non-woven made electrically conductive by metallization.
  • The low-resistance insulating material of the cores has a high insulation value defined by its insulation resistance constant, so that the wall thickness of the insulation of the cores can be reduced while retaining the insulation properties with respect to cores with conventional insulation materials. Corresponding cross-linked elastomeric insulating materials, for example, have the quality 3GI3 according to DIN VDE 0207, Part 20. The diameter of an envelope to such insulated and stranded together cores and thus the outer diameter of a corresponding line can thus be reduced compared to lines with conventionally insulated wires. The existing of a metallized non-woven screen represents a line surrounding the surrounding, almost seamless shell that is flexible because of the fleece structure on the one hand and mechanically very stable because of the material used polyamide on the other hand. This screen maintains its shielding effect unchanged even after bending the wire many times, because it contains no elements that can break.
  • In addition, the low-resistance insulating material advantageously has a thermal resistance of less than 20% when tested in accordance with IEC 6081 1-3-1 at 150 ° C with a test time of 1 hour (k = 0.6). The value of the heat pressure resistance is preferably less than 10%.
  • Copper is advantageously used for the metallization of the nonwoven consisting of polyamide, which is deposited on the nonwoven from the vapor phase and thereby also penetrates into it.
  • Embodiments of the subject invention are illustrated in the drawings.
  • Show it:
    • Fig. 1 and 2 two lines according to the invention with different structure in section.
    • Fig. 3 a section through an electrical cable with therein contained line according to the invention.
  • The line after Fig. 1 has two electrical wires 1 and 2, which are stranded together. Each of the two wires 1 and 2 has an electrical conductor 3 preferably made of copper and an insulation 4 surrounding it. The insulating material for the insulation 4 of the two wires 1 and 2 is a crosslinked elastomeric insulating material whose insulation resistance constant is greater than 4000 MΩkm at room temperature is. Such an insulating material has, for example, the quality 3 GI3 according to DIN VDE 0207, Part 20. The insulating material is also very low-displacement. This is evidenced by a test for heat resistance according to IEC 60811-3-1, in which it has a value of less than 20%, preferably less than 10%, at 150 ° C. (1 h test time, k = 0.6). Verdrückungsarmut and high insulation value cause significantly lower wall thicknesses for the same can be achieved compared to conventional insulation.
  • The insulation resistance constant of the insulating material used for the insulation 4 is advantageously greater than 15 MΩkm and preferably greater than 20 MΩkm at an ambient temperature of 90 ° C.
  • The conductors 3 of the wires 1 and 2 are advantageously made of copper. They can also be tinned. Their diameter can be advantageously 1.0 mm. The wall thickness of the conductors 3 surrounding insulation 4 may be 0.5 mm, so that there is an outer diameter of the wires 1 and 2 of 2.0 mm.
  • In the gussets between the wires 1 and 2 are according to the illustrated embodiment, two filling elements 5 and 6, which are stranded together with the wires 1 and 2. The structure of the filling elements 5 and 6 is arbitrary. They are advantageously made of insulating material. Over the stranding unit consisting of wires 1 and 2 as well as filling elements 5 and 6, an electrical screen 7 is arranged, which is surrounded by a layer 8 of insulating material. The thus completed electric line after Fig. 1 has an advantage of an outer diameter of 4.6 mm.
  • The all-round closed and existing over the entire length of the line screen 7 consists of a metallized and thus electrically conductive non-woven based on polyamide. Copper is advantageously used for the metallization, which is deposited on the nonwoven material from the vapor phase. It also penetrates into the nonwoven, so that a relatively thick, almost closed to pores, electrically conductive layer is formed.
  • For the layer 8 surrounding the screen 7, a spunbonded nonwoven made of polyethylene terephthalate (PETP) is advantageously used, which can be wrapped around the screen 7 as a band without gaps or can also be molded around in a longitudinally running manner. Instead of the spunbonded fabric or in addition, a jacket made of conventional insulating material can be applied over the screen 7.
  • The line after Fig. 2 has four wires 9, 10, 11 and 12, which are the same as the wires 1 and 2. However, they may have different dimensions than the wires 1 and 2. In addition to the four veins is in the lead after Fig. 2 a bare metallic conductor 13 is present, on which the screen 7 rests tightly. It essentially serves the improved contactability of the screen 7 when electrical contact elements are to be connected to the same, for example by crimping. The five elements 9 to 13 are stranded together. They are advantageously umversilt to a central core element 14 of insulating material. The core element 14 is preferably made of PETP twisted yarn.
  • The outer diameter of the pipe after the Fig. 1 or 2 is so small that a corresponding line, for example, can be easily integrated into a power cable. Such a power cable is schematically in section in Fig. 3 shown. It has three stranded phase conductors 15, 16 and 17 of conventional construction surrounded by a common jacket 18 of insulating material. The line according to the invention has such small dimensions that it can be arranged in the illustrated embodiment in the inner gusset between the three phase conductors 15, 16 and 17. she is in Fig. 3 denoted by 19. The line 19 could also elsewhere in the power cable after Fig. 3 be arranged.

Claims (7)

  1. Electrical line with at least two conductors having wires which are surrounded by an insulation, wherein the conductors are stranded together and are surrounded by a common electrical screen, which is surrounded by a layer of insulation material, characterized in
    - that the insulation (4) of the conductors consists of a poorly compressible, cross-linked elastomer insulation material whose insulation resistance constant at room temperature is greater than 4,000 MΩkm, and
    - that the screen (7) consists of a fleece material on the basis of polyamide which is rendered electrically conductive by metallization.
  2. Line according to claim 1, characterized in that the pressure resistance under heat of the insulation material of the insulation (4) of the conductors has a value of less than 20% in accordance with a test pursuant to IEC 6081 1-3-1 at 150 °C and a testing period of one hour (k=0.6).
  3. Line according to claim 2, characterized in that the value of the pressure resistance under heat is less than 10%.
  4. Line according to claim 1, characterized in that the insulation resistance constant of the insulation (4) of the conductors is greater than 15 MΩkm at an ambient temperature of 90 °C.
  5. Line according to claim 1, characterized in that the insulation resistance constant of the insulation (4) of the conductors is greater than 20 MΩkm at an ambient temperature of 90 °C.
  6. Line according to claim 1, characterized in that the conductors are stranded together with a blank metal conductor (13), to which the shield (7) abuts tightly.
  7. Line according to one of the claims 1 to 6, characterized in that the conductors are stranded around a central core element (14) of insulation material.
EP20110305435 2011-04-14 2011-04-14 Electrical cable Active EP2511913B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20110305435 EP2511913B1 (en) 2011-04-14 2011-04-14 Electrical cable

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP20110305435 EP2511913B1 (en) 2011-04-14 2011-04-14 Electrical cable
ES11305435T ES2414652T3 (en) 2011-04-14 2011-04-14 Electric driving
US13/440,155 US9117571B2 (en) 2011-04-14 2012-04-05 Electrical lines
CL2012000906A CL2012000906A1 (en) 2011-04-14 2012-04-10 electrical conductor with at least two conductors surrounded the insulation by the intertwining each other and surrounded by a common electrical shielding around which is a layer of insulating material.
KR1020120038033A KR101915076B1 (en) 2011-04-14 2012-04-12 Electrical cable
CN2012101114725A CN102737759A (en) 2011-04-14 2012-04-16 Electrical cable

Publications (2)

Publication Number Publication Date
EP2511913A1 EP2511913A1 (en) 2012-10-17
EP2511913B1 true EP2511913B1 (en) 2013-06-05

Family

ID=44533423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110305435 Active EP2511913B1 (en) 2011-04-14 2011-04-14 Electrical cable

Country Status (6)

Country Link
US (1) US9117571B2 (en)
EP (1) EP2511913B1 (en)
KR (1) KR101915076B1 (en)
CN (1) CN102737759A (en)
CL (1) CL2012000906A1 (en)
ES (1) ES2414652T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD745851S1 (en) * 2013-07-10 2015-12-22 Paracable, Inc. Electronics cable

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911202A (en) * 1973-01-31 1975-10-07 Moore & Co Samuel Electron cured plastic insulated conductors
US4154892A (en) * 1974-04-09 1979-05-15 Montedison S.P.A. Electric cables having a sheathing comprising a plasticized vinylchloride polymer
CH646814A5 (en) * 1979-06-20 1984-12-14 Huber & Suhner Ag Two-conductor or multi-conductor cable
DE3151235C2 (en) * 1981-12-21 1989-06-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
US5804762A (en) * 1996-03-22 1998-09-08 Parker-Hannifin Corporation EMI shielding gasket having shear surface attachments
JP3464581B2 (en) * 1996-06-27 2003-11-10 東レ・ダウコーニング・シリコーン株式会社 Silicone rubber composition for wire coating
EP1134749B1 (en) 2000-03-06 2004-09-22 Nexans Electrical cable
US20020117325A1 (en) * 2001-02-23 2002-08-29 Mennone Michael P. Flame resistant cable structure
DE10315609B4 (en) * 2003-04-05 2015-09-24 Nexans Data transmission cable
CA2563956C (en) * 2004-04-27 2013-03-26 Prysmian Cavi E Sistemi Energia S.R.L. Process for manufacturing a cable resistant to external chemical agents
JP2006019080A (en) * 2004-06-30 2006-01-19 Hitachi Cable Ltd Differential signal transmission cable
GB0614706D0 (en) * 2006-07-25 2006-09-06 Gore W L & Ass Uk Fabric
CN101113568A (en) * 2007-08-07 2008-01-30 东华大学 Ferrous metal electromagnetic screen fabric and method for making same
DE102007041981A1 (en) * 2007-09-05 2009-03-12 Hew-Kabel/Cdt Gmbh & Co. Kg Highly flexible shielded electrical data cable
CN201160017Y (en) * 2008-01-05 2008-12-03 富士康(昆山)电脑接插件有限公司 Cable
US8703288B2 (en) * 2008-03-21 2014-04-22 General Cable Technologies Corporation Low smoke, fire and water resistant cable coating
CN101667473A (en) * 2008-09-04 2010-03-10 尼克桑斯公司 Flexible wire
DE502008002331D1 (en) * 2008-11-12 2011-02-24 Nexans Flexible electrical cable
KR101576907B1 (en) * 2009-02-20 2015-12-14 엘에스전선 주식회사 Insulation Material for Electric Cables with Superior Flexibility and Crosslinkability and Electric Cable Produced with the Same
US20100300725A1 (en) * 2009-05-28 2010-12-02 Akinari Nakayama Electric-wire cable equipped with foamed insulator

Also Published As

Publication number Publication date
US9117571B2 (en) 2015-08-25
CL2012000906A1 (en) 2012-06-29
CN102737759A (en) 2012-10-17
KR20120117665A (en) 2012-10-24
KR101915076B1 (en) 2018-11-06
US20120261159A1 (en) 2012-10-18
EP2511913A1 (en) 2012-10-17
ES2414652T3 (en) 2013-07-22

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