EP2811491B1 - Câble électrique, notamment pour des centrales solaires et éoliennes - Google Patents

Câble électrique, notamment pour des centrales solaires et éoliennes Download PDF

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Publication number
EP2811491B1
EP2811491B1 EP14170030.2A EP14170030A EP2811491B1 EP 2811491 B1 EP2811491 B1 EP 2811491B1 EP 14170030 A EP14170030 A EP 14170030A EP 2811491 B1 EP2811491 B1 EP 2811491B1
Authority
EP
European Patent Office
Prior art keywords
electric cable
cable according
strip
conductor
plastic sleeve
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.)
Revoked
Application number
EP14170030.2A
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German (de)
English (en)
Other versions
EP2811491A1 (fr
Inventor
Christoph Studer
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.)
Studer Cables AG
Original Assignee
Leoni Studer AG
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
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Application filed by Leoni Studer AG filed Critical Leoni Studer AG
Publication of EP2811491A1 publication Critical patent/EP2811491A1/fr
Application granted granted Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/022—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of longitudinal lapped tape-conductors

Definitions

  • the invention relates to an electric cable according to the preamble of claim 1.
  • Such electric cables are suitable for the transport of large currents in the air and in the ground. Therefore, they are mainly used in large solar power plants for energy transmission of direct or alternating currents, especially where a high current density also causes high thermal heating, at the same time added to the warming by solar radiation, or where at a predetermined current to minimize heating.
  • the metal reinforcement of the cables should in turn ensure that the cables are well protected against mechanical damage or against rat or termite bites.
  • the metal reinforcement is made of steel or aluminum wires, respectively wrapped steel or other metal bands. Such a reinforcement is expensive to manufacture and has only a limited effect in terms of mechanical protection.
  • An insulating sheath, at least one semiconductor layer, a metal shield enclosing this and an outer sheath are provided with at least one electrical conductor and a multilayer insulation system enclosing the latter.
  • the serving as Nulleiter metal shield is provided with an extending along the cable overlap, which is sealingly joined together over the entire cable length, preferably by means of an adhesive and thus forms a liquid and vapor-tight protective cover of the cable interior.
  • a source strip for absorbing water or moisture is contained within the metal screen neutral, which is swellable when absorbed by water.
  • Such an electric cable is thus suitable for applications in which it is laid in a humid environment with high humidity.
  • the invention has for its object to provide an electric cable of the type mentioned, which is characterized by the highest possible heat radiation, low heat transfer losses and long service life by low production costs and good insulation properties and good protection against mechanical damage.
  • the single-ended conductor structure results in the largest possible contact surface on both sides, which brings about the best possible radial and transverse heat conduction in the cable.
  • the transverse water tightness is also realized almost without additional costs.
  • the life of the insulation can be significantly improved, as the electrical aging is increased by the moisture diffusion.
  • the metallic barrier permanently blocks the ingress of water.
  • the tightness and mechanical connection of the overlapping point is preferably ensured with an adhesive applied there, in particular a hot-melt adhesive.
  • the inventive reinforcement also allows the management of the protection potential and the shielding against electric fields, in the case of a short circuit, the full-area Bandarmtechnik can derive very large currents without damage, because the thermal full contact with the plastic shells allows extremely large amounts of heat to dissipate immediately, causing overheating the reinforcement is avoided.
  • the advantages of the inventive reinforcement are fully effective both in single-core cables and in multiple conductors. Due to the geometry of stranded coaxial two- or four-conductor cables for direct current or single-phase systems are also symmetrical electric fields, a property that is particularly interesting in areas where higher-frequency interference currents of the inverter, both on the DC and on the AC side of the DC currents. 50 or 60 Hz superimpose currents. In a three-phase system, three twisted feeders produce the best result.
  • the electric cable 1 comprises an inner conductor 2 made of a plurality of stranded wires made of aluminum or copper with an inner plastic shell 3 and a concentrically applied armor, consisting of a longitudinal band 4, which consists of a metal foil of aluminum, copper, steel or brass with approx. 0.3 mm thickness is made.
  • the reinforcing strip 4 is preferably glued longitudinally at the overlap point 5 and thus forms a watertight diffusion barrier, which ensures the transverse water tightness of the electric cable.
  • an adhesive is particularly suitable in the overlap point 5 of the tape applied hot melt.
  • the reinforcing strip 4 can also be glued over the entire surface with the outer plastic sheath 6, 7 by an adhesive layer.
  • an outer plastic jacket 6, 7 is preferably applied with a plurality of functional layers, for example, an inner layer 6 with very flame-retardant behavior and an outer layer 7, a so-called Termigon layer against termite and rodents and to protect the electrical cable against abrasion when pulling in the cable is effective.
  • the metal reinforcement 4 consists of a single longitudinal band which is glued to the overlap point 5.
  • a metal reinforcement a band construction comprising a plurality of longitudinal individual bands which are glued to one another at the overlapping points.
  • the plastic insulation of the cable consisting of the inner plastic sheath 3 and the outer plastic sheath 6, 7 is produced by means of extruder machines, which make it possible, either only one layer or simultaneously in one operation several layers apply. In the inventive electric cable both methods are applicable.
  • two feeders 1a, 1b can be stranded together to form a two-conductor cable 8. They thus allow the transport of the forward and reverse current, whereby at DC the two polarities + and - are performed.
  • Fig. 3 it is also possible to manufacture four such stranded conductors 1a to 1d into a four-conductor cable 9, thereby further increasing the conductor surface and the cooling surface, and improving the transporting capacity at a given cross section.
  • the insulation systems each with an inner semiconductor, a dielectric and an outer semiconductor, wherein the semiconductor layers may consist of strips, graphite or an extruded material.

Landscapes

  • Insulated Conductors (AREA)
  • Non-Insulated Conductors (AREA)

Claims (6)

  1. Câble électrique, comprenant au moins un conducteur (2) de courant composé de plusieurs fils métalliques câblés ensemble et pourvu d'une armure (4) métallique se trouvant entre une gaine (3) intérieure en matière plastique et une enveloppe (6, 7) extérieure en matière plastique, l'armure (4) métallique étant formée d'un agencement de ruban s'étendant en longueur, qui est pourvu d'au moins un ruban longitudinal déposé concentriquement autour de la gaine (3) intérieure en matière plastique, lequel est relié au point (5) de chevauchement, de préférence à une colle, notamment une colle à chaud, qui y est déposée, caractérisé en ce que
    le ruban longitudinal de l'armure (4) métallique est déposé directement et concentriquement autour de la gaine (3) intérieure en matière plastique et est fabriqué en une épaisseur plus grande que 0,1 mm, le câble (1) électrique étant utilisé pour des centrales héliothermiques ou des éoliennes.
  2. Câble électrique suivant la revendication 1, caractérisé en ce que
    l'agencement (4) de ruban est en une feuille métallique, en un métal comme l'aluminium, le cuivre, l'acier et/ou le laiton.
  3. Câble électrique suivant la revendication 1 ou 2, caractérisé en ce que
    l'agencement (4) de ruban est composé de plusieurs rubans longitudinaux ayant des cordons (5) de chevauchement collés entre eux.
  4. Câble électrique suivant la revendication 1 ou 2, caractérisé en ce que
    l'agencement (4) de ruban est constitué d'un ruban individuel, qui est collé par toute sa surface à l'enveloppe (6, 7) extérieure en matière plastique par une couche collante.
  5. Câble électrique suivant l'une des revendications précédentes 1 à 4, caractérisé en ce que
    la gaine (3) intérieure en matière plastique ou l'enveloppe (6, 7) extérieure en matière plastique ont une structure en une couche ou en plusieurs couches.
  6. Câble électrique suivant l'une des revendications précédentes 1 à 5, caractérisé en ce que
    il est fabriqué sous la forme d'un câble à un seul conducteur ayant des matériaux sans halogène et un indice de température assez élevé, ainsi que de la matière isolante réticulée.
EP14170030.2A 2013-06-03 2014-05-27 Câble électrique, notamment pour des centrales solaires et éoliennes Revoked EP2811491B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01052/13A CH708133B1 (de) 2013-06-03 2013-06-03 Elektrokabel, insbesondere für Solar- bzw. Windkraftwerke.

Publications (2)

Publication Number Publication Date
EP2811491A1 EP2811491A1 (fr) 2014-12-10
EP2811491B1 true EP2811491B1 (fr) 2016-11-09

Family

ID=50819604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14170030.2A Revoked EP2811491B1 (fr) 2013-06-03 2014-05-27 Câble électrique, notamment pour des centrales solaires et éoliennes

Country Status (3)

Country Link
EP (1) EP2811491B1 (fr)
CH (1) CH708133B1 (fr)
IN (1) IN2014CH02674A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10049790B2 (en) 2014-08-11 2018-08-14 Christoph Studer Electrical cable

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107910134B (zh) * 2017-10-14 2019-08-30 江苏宝安电缆有限公司 盾构机用高压电缆的制造方法
WO2019110373A1 (fr) 2017-12-06 2019-06-13 Südkabel GmbH Câble avec couche coupe-feu
DE102017129020A1 (de) * 2017-12-06 2019-06-06 Südkabel GmbH Kabel mit Brandschutzschicht
CN109559849B (zh) * 2018-11-09 2020-10-30 福州盛世凌云环保科技有限公司 一种保湿抗风蚀抗老化风电电缆及其制备方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823747A (en) 1971-03-17 1974-07-16 Western Electric Co Tubular member having a sealed longitudinal seam
US4145567A (en) 1977-06-06 1979-03-20 General Cable Corporation Solid dielectric cable resistant to electrochemical trees
EP0213946A2 (fr) 1985-08-30 1987-03-11 Kt Technologies Inc. Feuille de blindage pour câble d'énergie électrique
US4703132A (en) 1986-05-16 1987-10-27 Pirelli Cable Corporation Filling compound for multi-wire conductor of an electrical cable and cables including such compound
US5281757A (en) 1992-08-25 1994-01-25 Pirelli Cable Corporation Multi-layer power cable with metal sheath free to move relative to adjacent layers
EP1236764A1 (fr) 2001-03-02 2002-09-04 Studer Draht-und Kabelwerk AG Cable ignifugé avec une protection contre rongeurs et/ou termites
WO2005015577A1 (fr) 2003-07-25 2005-02-17 Pirelli & C. S.P.A. Procede continu de fabrication de cables electriques
WO2011078865A1 (fr) 2009-12-23 2011-06-30 Paul Cinquemani Câble électrique souple résistant aux agents chimiques extérieurs

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH690473A5 (de) * 1995-03-14 2000-09-15 Studer Ag Draht & Kabelwerk Elektrokabel.
US7880335B2 (en) * 2007-11-28 2011-02-01 General Electric Company Power backup system for offshore wind generators

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823747A (en) 1971-03-17 1974-07-16 Western Electric Co Tubular member having a sealed longitudinal seam
US4145567A (en) 1977-06-06 1979-03-20 General Cable Corporation Solid dielectric cable resistant to electrochemical trees
EP0213946A2 (fr) 1985-08-30 1987-03-11 Kt Technologies Inc. Feuille de blindage pour câble d'énergie électrique
US4703132A (en) 1986-05-16 1987-10-27 Pirelli Cable Corporation Filling compound for multi-wire conductor of an electrical cable and cables including such compound
US5281757A (en) 1992-08-25 1994-01-25 Pirelli Cable Corporation Multi-layer power cable with metal sheath free to move relative to adjacent layers
EP1236764A1 (fr) 2001-03-02 2002-09-04 Studer Draht-und Kabelwerk AG Cable ignifugé avec une protection contre rongeurs et/ou termites
WO2005015577A1 (fr) 2003-07-25 2005-02-17 Pirelli & C. S.P.A. Procede continu de fabrication de cables electriques
WO2011078865A1 (fr) 2009-12-23 2011-06-30 Paul Cinquemani Câble électrique souple résistant aux agents chimiques extérieurs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Standard HD 620-S2:2010, Part 10, section 12", CENELEC, THE EUROPEAN COMMITTEE FOR ELECTROTECHNICAL STANDARDIZATION, 2010, XP055407572

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10049790B2 (en) 2014-08-11 2018-08-14 Christoph Studer Electrical cable

Also Published As

Publication number Publication date
CH708133A2 (de) 2014-12-15
EP2811491A1 (fr) 2014-12-10
IN2014CH02674A (fr) 2015-07-10
CH708133B1 (de) 2017-06-30

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