EP0815567B1 - Cable electrique - Google Patents

Cable electrique Download PDF

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Publication number
EP0815567B1
EP0815567B1 EP96905648A EP96905648A EP0815567B1 EP 0815567 B1 EP0815567 B1 EP 0815567B1 EP 96905648 A EP96905648 A EP 96905648A EP 96905648 A EP96905648 A EP 96905648A EP 0815567 B1 EP0815567 B1 EP 0815567B1
Authority
EP
European Patent Office
Prior art keywords
metal screen
adhesive
cable
conductor
electric cable
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
EP96905648A
Other languages
German (de)
English (en)
Other versions
EP0815567A1 (fr
Inventor
Ewald Sarbach
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 Schweiz AG
Original Assignee
Studer Draht und Kabelwerk 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4193643&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0815567(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Studer Draht und Kabelwerk AG filed Critical Studer Draht und Kabelwerk AG
Publication of EP0815567A1 publication Critical patent/EP0815567A1/fr
Application granted granted Critical
Publication of EP0815567B1 publication Critical patent/EP0815567B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/023—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of helicoidally wound tape-conductors
    • 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 electrical cable according to the preamble of Claim 1.
  • a generic electrical cable is suitable preferably as a medium voltage cable for voltages between 10 and 50 kV or also as high-voltage cable up to 420 kV.
  • a known electrical cable according to US-5,281,757 consists essentially of a centrally arranged, several copper or aluminum wires stranded together generated electrical conductor and ring-shaped from the latter enclosing multi-layer insulation, which from a Conductor surrounding first semiconductor layer, one made of an aging-resistant Plastic, for example made of cross-linked polyethylene, existing insulation sheath, a second semiconductor layer, a Swelling tape, a neutral conductor and one made of plastic manufactured outer jacket is manufactured.
  • the ring-shaped in cross section The neutral conductor is from a band around the source band, this completely enveloping metal foil tape formed with its band edges forms an overlap point. This metal foil is glued together at this point of overlap.
  • the aim is that the metal foil almost floating between the outer Sheath and the layer adjacent to the inside is arranged.
  • the metal foil almost floating between the outer Sheath and the layer adjacent to the inside is arranged.
  • there is a gap between the outer jacket and Metal foil is no longer given a full temperature conductivity, which in the event of a short circuit is more likely to destroy the Can lead metal foil.
  • the isolation through the Layer between the metal foil and the internal semiconductor not beneficial.
  • the object of the present invention is an electric cable according to the type described above to further develop that in the case of this being easier Manufacturing neither liquid nor moisture, especially Water vapor, can penetrate inside and with this one increased resistance to aging compared to conventional cables is achieved.
  • the object is characterized by the characterizing part of the claim 1 solved.
  • this metal screen is on its entire inside with a semiconductor designed Provide adhesive, which is designed as a film and before Finishing the cable attached to the inside of the metal screen is.
  • This electric cable according to the invention offers simple and consequently, cost-effective manufacture, absolute tightness especially before moisture and liquid penetration.
  • the inside of this metal shade protected against corrosion by the adhesive film attached to it.
  • FIG. 1 shows an electrical cable 10, which is particularly suitable for medium voltages in a voltage range between 10 and 50 kV or for high voltages up to 420 kV and one centrically arranged, made of several copper or aluminum wires 14 or the like produced electrical Conductor 12 and a multilayer enclosing it Isolation system includes.
  • the latter has a electrical conductor 12 surrounding semiconductor layer 15, one of these comprehensive insulation sleeve 16, an outer semiconductor layer 17, a metal shield which surrounds the latter and serves as a neutral conductor 20 and an outer jacket 18.
  • For the metal screen 20 is an aluminum foil tape is provided, which runs along the cable is placed around the outer semiconductor layer 17 and such Width that there is a along the cable 10th extending overlap point 22 forms.
  • the band edges overlap at an angle of at least 10 °, they could but overlap so far that this metal screen two or would be sheathed several times around the inside of the cable.
  • the metal screen 20 is at its overlap point 22 continuously over the entire cable length an adhesive 23 sealingly joined together and thus forms a liquid and vapor impermeable protective sleeve inside the cable.
  • the adhesive 23 is on the entire inside the metal screen 20 attached, advantageously as a semiconductor film trained and prior to manufacturing the cable by a pressing process glued to the inside of the metal screen 20.
  • the adhesive 23 exposes itself essentially an adhesive material and chemically produced carbon black and its formation as a semiconductor enables an electrical Contact from the metal screen to the outer semiconductor layer 17 in spite of the full range between them Adhesive film.
  • the outer semiconductor layer 17 and the metal screen 20 is also a semiconductor Source tape 19 inserted, which primarily has two functions. If the outer layer of the cable is damaged, which has, among other things, cracked the metal screen this swelling band 19 the water penetrating into the interior of the cable as well as the moisture and the strong swelling The same will cause the water to continue flowing in the longitudinal direction of the cable prevented.
  • this swelling band 19 due to its elastic design, a cushion function in particular the outer diameter when the cable is installed changing insulation sleeve 16 and this surrounding semiconductor layer 17.
  • This swelling band 19 is out a nonwoven fabric or the like with one on the inside like also plastic coating applied on the outside manufactured, the latter being mixed with carbon particles, which gives the source tape the semiconducting property as a whole to lend.
  • Such an electrical cable usually has an outside diameter between 10 and 70 millimeters. It will be single or used as a three-wire cable, in the latter case of application the three individual cables are stranded together and by are held together in a comprehensive coat.
  • the foil tape used as a metal screen can in principle also made of copper or another electrically conductive material be.
  • the point of overlap of this film strip must also do not necessarily run parallel to the conductor along the cable, but the film could also be helical or in a row following layers around the cable.

Landscapes

  • Insulated Conductors (AREA)
  • Inorganic Insulating Materials (AREA)

Claims (7)

  1. Câble électrique comportant au moins un conducteur électrique (12) entouré par un système d'isolation multi-couche,
    dans lequel
    le système d'isolation comprend une couche semi-conductrice (15) entourant le conducteur (12) et entourée elle-même par une gaine d'isolation (16), une couche semi-conductrice externe (17), un conducteur neutre (20) à blindage métallique ainsi qu'une enveloppe externe (18),
    le blindage métallique (20) présente, tout le long du câble une zone en superposition (22) à laquelle le blindage métallique est réuni en continu et de manière étanche sur toute la longueur du câble, de préférence par un adhésif (23), en formant ainsi une enveloppe perméable aux liquides et aux vapeurs, protégeant l'intérieur du câble
    ce câble présentant la combinaison des caractéristiques suivantes :
    à l'intérieur du conducteur neutre à blindage métallique (20) se trouve une bande de gonflement (19) qui peut absorber de l'eau ou de l'humidité et ainsi gonfler par admission d'eau, cette bande étant semi-conductrice, l'adhésif (23) étant également fait d'un matériau semi-conducteur,
    l'enveloppe externe (18) est montée sur le blindage métallique (20), avec au moins un vide partiel entre ces éléments de manière à obtenir une adhérence parfaite entre eux,
    ou l'enveloppe externe (18) est disposée par extrusion à la presse sur le blindage métallique (20) et s'y trouve donc appliquée sous pression.
  2. Câble électrique selon la revendication 1,
    caractérisé en ce que
    le blindage métallique (20) est garni sur toute sa surface interne, d'un adhésif (23).
  3. Câble électrique selon la revendication 1,
    caractérisé en ce que
    l'adhésif (23) est appliqué sous la forme d'une pellicule sur la face interne du blindage métallique (20).
  4. Câble électrique selon la revendication 1,
    caractérisé en ce que
    l'adhésif (23) est composé essentiellement d'un matériau adhésif auquel est mélangé du noir de carbone obtenu par voie chimique.
  5. Câble électrique selon une des revendications précédentes,
    caractérisé en ce que
    pour réaliser le blindage métallique (20), on utilise un ruban pelliculaire fait d'aluminium ou de cuivre, posé le long du câble (10) autour de la couche semi-conductrice externe (17), ce ruban ayant une largeur telle qu'il se forme une zone en superposition (22) tout le long du câble (10).
  6. Câble électrique selon une des revendications précédentes,
    caractérisé en ce que
    la bande de gonflement (19) est réalisée à partir d'un voile textile ou produit analogue en déposant sur sa face interne, et également sur sa face externe, un revêtement de matière plastique auquel sont mélangées des particules de carbone conférant à l'ensemble de la bande de gonflement la qualité de semi-conducteur.
  7. Câble électrique selon une des revendications précédentes,
    caractérisé en ce que
    l'adhésif (23) peut être collé sur le blindage métallique (20) à une température un peu supérieure à 80°.
EP96905648A 1995-03-14 1996-03-12 Cable electrique Revoked EP0815567B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH721/95 1995-03-14
CH00721/95A CH690473A5 (de) 1995-03-14 1995-03-14 Elektrokabel.
PCT/CH1996/000091 WO1996028830A1 (fr) 1995-03-14 1996-03-12 Cable electrique

Publications (2)

Publication Number Publication Date
EP0815567A1 EP0815567A1 (fr) 1998-01-07
EP0815567B1 true EP0815567B1 (fr) 1999-02-03

Family

ID=4193643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96905648A Revoked EP0815567B1 (fr) 1995-03-14 1996-03-12 Cable electrique

Country Status (6)

Country Link
EP (1) EP0815567B1 (fr)
AT (1) ATE176547T1 (fr)
AU (1) AU4936096A (fr)
CH (1) CH690473A5 (fr)
DE (1) DE59601264D1 (fr)
WO (1) WO1996028830A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH708133B1 (de) * 2013-06-03 2017-06-30 Leoni Studer Ag Elektrokabel, insbesondere für Solar- bzw. Windkraftwerke.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE401874B (sv) * 1976-09-15 1978-05-29 Asea Ab Starkstromskabel
FI863463A7 (fi) * 1985-08-30 1987-03-01 Kt Tech Inc Suojateippi sähkövoimakaapeleita varten.
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

Also Published As

Publication number Publication date
EP0815567A1 (fr) 1998-01-07
AU4936096A (en) 1996-10-02
ATE176547T1 (de) 1999-02-15
CH690473A5 (de) 2000-09-15
DE59601264D1 (de) 1999-03-18
WO1996028830A1 (fr) 1996-09-19

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