EP0802542B1 - Hochspannungskabel - Google Patents

Hochspannungskabel Download PDF

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Publication number
EP0802542B1
EP0802542B1 EP97104646A EP97104646A EP0802542B1 EP 0802542 B1 EP0802542 B1 EP 0802542B1 EP 97104646 A EP97104646 A EP 97104646A EP 97104646 A EP97104646 A EP 97104646A EP 0802542 B1 EP0802542 B1 EP 0802542B1
Authority
EP
European Patent Office
Prior art keywords
mantle
layer
layers
cable
voltage 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
EP97104646A
Other languages
English (en)
French (fr)
Other versions
EP0802542A2 (de
EP0802542A3 (de
Inventor
Bo Svarrer Hansen
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.)
NKT Cables AS
Original Assignee
NKT Cables AS
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=8092255&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0802542(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by NKT Cables AS filed Critical NKT Cables AS
Publication of EP0802542A2 publication Critical patent/EP0802542A2/de
Publication of EP0802542A3 publication Critical patent/EP0802542A3/de
Application granted granted Critical
Publication of EP0802542B1 publication Critical patent/EP0802542B1/de
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
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/36—Insulated conductors or cables characterised by their form with distinguishing or length marks
    • H01B7/361—Insulated conductors or cables characterised by their form with distinguishing or length marks being the colour of the insulation or conductor
    • 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
    • H01B9/027—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of semi-conducting layers

Definitions

  • the invention relates to a high-voltage cable which consists of an inner conductor and a number of outer layers, which mainly serve the purpose of insulating the conductor from the surroundings and protect the cable from mechanical damage, moisture and corrosion, and where the two outer of these layers form a mantle with an inner insulation layer and an outer, relatively thin semiconductor layer.
  • the insulation layers of the mantle serve the purpose of a.o. protect the cable from being damaged by external stress during transportation and in connection with the laying down and the mounting. Furthermore, the mantle serves as an outer insulation and protection against corrosion, and the last-mentioned problems make heavy demands on the density of the layer.
  • the semiconductor layer of the mantle In the finished spigot-and-socket joint the semiconductor layer of the mantle would, all things being equal, make a conducting connection between the conducting parts of the cable and the earth. Therefore, the semiconductor layer would short-circuit the currents which might run in these parts. Such a short-circuit would result in undesired current dissipation, and furthermore, a true density control of the insulation layer of the mantle would not be possible. To eliminate these disadvantages the semiconductor layer of the mantle is therefore removed from its insulation layer along a piece which extends from the exposed led layer to somewhat outside the box.
  • This operation is usually done manually by means of simple pieces of tools, such as a spoke shave on the place where the cable is laid down.
  • the operator will therefore often have to work under difficult conditions, and since the semiconductor layer of the conventional mantles not with certainty is to be distinguished from the underlying insulation layer and furthermore are relatively thin, e.g. typically in sizes of 0,2 mm., the process in itself is difficult and time demanding and the result is often dissatisfactory. If there is cut to deep, the insulation layer will be damaged, and if there is not cut deep enough, the risk of short-circuit is still present.
  • the purpose of the invention is to provide a high-voltage cable of the type mentioned in the opening paragraph being adapted in such a way, that its semiconductor layer quickly and securely can be removed manually from its insulation layer even under difficult working conditions, and which at the same time is able to reveal if the cable has been damaged during the transportation and the handling.
  • the novel and characteristic features according to the invention in which this is obtained, is that there for the two mantle layers are used materials, which are easy to distinguish from each other, whereby the operator securely can identify the limit between the two layers, when the semiconductor layer of the mantle is to be removed from its insulation layer at an cable end which is to be joined in a box. If the cable should be damaged during the transportation and/or in connection with the work of laying down the cable, the damaged area will furthermore be revealed in those cases, where the damage has uncovered the insulation layer.
  • the two mantle layers are especially easy to distinguish from each other when their materials are of different colours.
  • the two outer mantle layers can with advantage be made of plastic with an additive of carbon black in an amount of by way of example 30% in order to make the layer to be conductive.
  • the outer mantle layer will take the black colour of the carbon black.
  • the inner mantle layer can then be made of polymeres, such as polyethylene, polyvinyl chloride or polyurithane with a different colour than black.
  • the different colours of the materials therefore efficiently determine the work of the operator and thereby ensures an optimum result, where the outer mantle layer efficiently has been removed without having damaged the inner mantle layer.
  • the material of the inner mantle layer can furthermore with advantage be red or white.
  • the operator will physically be able to registrate the limit between the two mantle layers, when he, when during the work of removing the outer layer, can ascertain that the material has changed character.
  • the embodiment shown is only to be understood as an example, and the cable can within the scope of the invention be constructed in many other expedient ways.
  • the main point is, that the cable at the outside is provided with a mantle with an inner insulation layer and an outer, relatively thin semiconductor layer.
  • the cable is build up by a number of layers, which in order to give an overall understanding, briefly is mentioned in the following.
  • the real conductor 1 of the cable which conductor is serving the purpose of transmission of the electric current, is in the middle of the cable.
  • a conductor will usually have a relatively large diameter, which e.g. can be approximately 50 mm, and the conductor is therefore typically divided into a number of sectional wires in order to provide the cable with an adequately large flexibility allowing the cable to be wounded up upon a cable drum and follow the differences of level of the terrain.
  • the wires consist of copper and/or aluminium, and the interspace between the wires are filled with swelling powder and semiconducting tape (not shown). Innermost there can furthermore be arranged a solid core of aluminium (not shown).
  • a conducting screen 2 has been extruded in the shape of an inner semiconductor serving the purpose of equalizing the electric field around the sectional wires of the conductor.
  • extruded insulation 3 of e.g. crosslinked polyethylene for insulating the conductor from the surroundings.
  • an insulation screen 4 consisting of a semiconducting material and serving the same purpose as the conductor screen 2, namely to equalize and homogenize the field.
  • a band winding 5, which has been wounded around the insulation screen 4, makes a thermic barrier, with the purpose of preventing the plastic from melting.
  • the winding consists of craped carbon paper and swelling band which swells, when it is exposed to water, and thereby forms an obstruction for moisture which tries to penetrate along the cable.
  • a mantle 8 with an inner insulation layer 9 of for example polyester and an outer, relatively thin semiconductor layer 10 of plastic to which has been added carbon black in a proportion of for example 30% in order to make the layer semiconducting.
  • the insulation layer 9 of the mantle 8 serves the purpose of functioning as an outer insulation to the cable and protect it from mechanical damage and corrosion, while the superjacent semiconductor layer 10 functions, when the density of the insulation layer 9 is to be tested.
  • the semiconductor layer 10 is furthermore relatively thin, e.g. about 0.2 mm, and the operator will therefore have to be extremely careful in order not to cut too deep and damage the insulation layer 9 or oppositely leave semiconducting deposits 10, which might be the course of a short-circuit.
  • a second advantage is, that the special construction of the mantle 8 can reveal, if a cable has been damaged during the transportation and the handling to such a degree that some of the insulation layer 9 of the mantle 8 has been uncovered.
  • the plastic material of the semiconductor layer 10 can, for example, be coloured black by a content of carbon black in order to make the plastic semiconducting, and the material of the insulation layer 9 can then have a correspondingly contrasting colour, which e.g. can be red, yellow, green or white.
  • the materials of the two layers 9, 10 can have structures which can be distinguished from each other.
  • the plastic material of the semiconductor layer 10 be more coarse and/or more soft than the material of the insulation layer 9.
  • a particular expedient embodiment is obtained by combining the first and the second embodiment so that it is possible to distinguish the materials of the two layers 9, 10 from each other as well physically as visually.

Landscapes

  • Cable Accessories (AREA)
  • Communication Cables (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Organic Insulating Materials (AREA)
  • Conductive Materials (AREA)
  • Insulated Conductors (AREA)

Claims (10)

  1. Hochspannungskabel, bestehend aus einem inneren Leiter und einer Anzahl von äußeren Lagen, welche im wesentlichen zur Isolation des Leiters von der Umgebung dienen und das Kabel vor mechanischer Beschädigung, Feuchtigkeit und Korrosion schützen, wobei die beiden äußeren dieser Lagen einen Mantel mit einer inneren Isolationslage und mit einer äußeren, vergleichsweise dünnen Halbleiterlage bilden, dadurch gekennzeichnet, dass für die beiden Mantellagen Materialien verwendet werden, die einfach von einander unterschieden werden können.
  2. Hochspannungskabel gemäß Anspruch 1, dadurch gekennzeichnet, dass die Materialien der beiden Mantellagen unterschiedliche Farben aufweisen.
  3. Hochspannskabel gemäß Anspruch 1 oder 2, gekennzeichnet dadurch, dass das Material der äußeren Mantellage schwarz ist und dass das Material der inneren Mantellage nicht schwarz ist.
  4. Hochspannungskabel gemäß Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass das Material der äußeren Mantellage schwarz ist und dass das Material der inneren Mantellage rot ist.
  5. Hochspannungskabel gemäß Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass das Material der äußeren Mantellage schwarz ist und dass das Material der inneren Mantellage weiß ist.
  6. Hochspannungskabel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Material der beiden Mantellagen eine unterschiedliche Struktur aufweisen.
  7. Hochspannungskabel nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Material der äußeren Mantellage eine gröbere Struktur als das Material der inneren Mantellage aufweist.
  8. Hochspannungskabel nach einem der Ansprüche 1 bis 7, gekennzeichnet dadurch, dass das Material der äußeren Mantellage eine weichere Struktur als die Struktur des Materials der inneren Mantellage aufweist.
  9. Hochspannungskabel nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die innere Lage des Mantels aus einem Polymer wie Polyethylen, Polyvinylchlorid oder Polyurethan hergestellt ist.
  10. Hochspannungskabel gemäß einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die äußere Lage des Mantels aus einem Kunststoff mit einem Zusatz von Industrieruß hergestellt ist.
EP97104646A 1996-03-20 1997-03-19 Hochspannungskabel Revoked EP0802542B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK32396 1996-03-20
DK32396 1996-03-20
DK323/96 1996-03-20

Publications (3)

Publication Number Publication Date
EP0802542A2 EP0802542A2 (de) 1997-10-22
EP0802542A3 EP0802542A3 (de) 1998-10-21
EP0802542B1 true EP0802542B1 (de) 2002-01-02

Family

ID=8092255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97104646A Revoked EP0802542B1 (de) 1996-03-20 1997-03-19 Hochspannungskabel

Country Status (4)

Country Link
EP (1) EP0802542B1 (de)
AT (1) ATE211578T1 (de)
DE (1) DE69709432T2 (de)
DK (1) DK0802542T3 (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6357688B1 (en) 1997-02-03 2002-03-19 Abb Ab Coiling device
US6369470B1 (en) 1996-11-04 2002-04-09 Abb Ab Axial cooling of a rotor
US6376775B1 (en) 1996-05-29 2002-04-23 Abb Ab Conductor for high-voltage windings and a rotating electric machine comprising a winding including the conductor
US6396187B1 (en) 1996-11-04 2002-05-28 Asea Brown Boveri Ab Laminated magnetic core for electric machines
US6417456B1 (en) 1996-05-29 2002-07-09 Abb Ab Insulated conductor for high-voltage windings and a method of manufacturing the same
US6429563B1 (en) 1997-02-03 2002-08-06 Abb Ab Mounting device for rotating electric machines
US6439497B1 (en) 1997-02-03 2002-08-27 Abb Ab Method and device for mounting a winding
US6465979B1 (en) 1997-02-03 2002-10-15 Abb Ab Series compensation of electric alternating current machines
US6525504B1 (en) 1997-11-28 2003-02-25 Abb Ab Method and device for controlling the magnetic flux in a rotating high voltage electric alternating current machine
US6525265B1 (en) 1997-11-28 2003-02-25 Asea Brown Boveri Ab High voltage power cable termination
US6577487B2 (en) 1996-05-29 2003-06-10 Asea Brown Boveri Ab Reduction of harmonics in AC machines
US6646363B2 (en) 1997-02-03 2003-11-11 Abb Ab Rotating electric machine with coil supports
US6801421B1 (en) 1998-09-29 2004-10-05 Abb Ab Switchable flux control for high power static electromagnetic devices
US6822363B2 (en) 1996-05-29 2004-11-23 Abb Ab Electromagnetic device
US6825585B1 (en) 1997-02-03 2004-11-30 Abb Ab End plate
US6828701B1 (en) 1997-02-03 2004-12-07 Asea Brown Boveri Ab Synchronous machine with power and voltage control
US6831388B1 (en) 1996-05-29 2004-12-14 Abb Ab Synchronous compensator plant

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE512917C2 (sv) 1996-11-04 2000-06-05 Abb Ab Förfarande, anordning och kabelförare för lindning av en elektrisk maskin
SE509072C2 (sv) 1996-11-04 1998-11-30 Asea Brown Boveri Anod, anodiseringsprocess, anodiserad tråd och användning av sådan tråd i en elektrisk anordning
DE19729646C2 (de) * 1997-07-10 2001-08-16 Alcatel Sa Elektrisches Kabel
GB2331854A (en) * 1997-11-28 1999-06-02 Asea Brown Boveri Transformer
GB2331852A (en) * 1997-11-28 1999-06-02 Asea Brown Boveri Transformer winding arrangements
GB2331856B (en) * 1997-11-28 2002-02-27 Asea Brown Boveri Electricity supply system
GB2331853A (en) * 1997-11-28 1999-06-02 Asea Brown Boveri Transformer
EP2577683B1 (de) * 2010-05-27 2018-01-03 Prysmian Cables and Systems USA, LLC Stromkabel mit von einem mantel unterscheidbarer halbleiteraussenschicht
CN102063961A (zh) * 2010-12-01 2011-05-18 江苏亚特电缆有限公司 45kV三芯电力电缆
EP2669901B1 (de) * 2012-06-01 2015-09-16 Nexans Kabel mit Verschleißanzeige
EP3054457B1 (de) * 2015-02-09 2020-04-15 Lapp Engineering & Co. Kabel zur Verwendung im Brennstoffbereich
CN112185614B (zh) * 2019-07-03 2021-12-03 江苏亨通线缆科技有限公司 一种双层护套螺旋电缆及其制造工艺
WO2023211351A1 (en) * 2022-04-27 2023-11-02 Habia Cable Aktiebolag A multi-layered lightweight high-voltage electrical cable, a method of stripping an electrical cable, and a kit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2053960A1 (de) * 1970-11-03 1972-05-10 Kabel Metallwerke Ghh Verfahren zur Herstellung einer gefärbten, temperaturbeständigen, mechanisch festen elektrischen Leitung
GB2223877B (en) * 1988-10-17 1993-05-19 Pirelli General Plc Extra-high-voltage power cable

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6831388B1 (en) 1996-05-29 2004-12-14 Abb Ab Synchronous compensator plant
US6822363B2 (en) 1996-05-29 2004-11-23 Abb Ab Electromagnetic device
US6376775B1 (en) 1996-05-29 2002-04-23 Abb Ab Conductor for high-voltage windings and a rotating electric machine comprising a winding including the conductor
US6577487B2 (en) 1996-05-29 2003-06-10 Asea Brown Boveri Ab Reduction of harmonics in AC machines
US6417456B1 (en) 1996-05-29 2002-07-09 Abb Ab Insulated conductor for high-voltage windings and a method of manufacturing the same
US6396187B1 (en) 1996-11-04 2002-05-28 Asea Brown Boveri Ab Laminated magnetic core for electric machines
US6369470B1 (en) 1996-11-04 2002-04-09 Abb Ab Axial cooling of a rotor
US6439497B1 (en) 1997-02-03 2002-08-27 Abb Ab Method and device for mounting a winding
US6465979B1 (en) 1997-02-03 2002-10-15 Abb Ab Series compensation of electric alternating current machines
US6357688B1 (en) 1997-02-03 2002-03-19 Abb Ab Coiling device
US6429563B1 (en) 1997-02-03 2002-08-06 Abb Ab Mounting device for rotating electric machines
US6825585B1 (en) 1997-02-03 2004-11-30 Abb Ab End plate
US6646363B2 (en) 1997-02-03 2003-11-11 Abb Ab Rotating electric machine with coil supports
US6828701B1 (en) 1997-02-03 2004-12-07 Asea Brown Boveri Ab Synchronous machine with power and voltage control
US6525504B1 (en) 1997-11-28 2003-02-25 Abb Ab Method and device for controlling the magnetic flux in a rotating high voltage electric alternating current machine
US6525265B1 (en) 1997-11-28 2003-02-25 Asea Brown Boveri Ab High voltage power cable termination
US6801421B1 (en) 1998-09-29 2004-10-05 Abb Ab Switchable flux control for high power static electromagnetic devices

Also Published As

Publication number Publication date
DK0802542T3 (da) 2002-04-22
EP0802542A2 (de) 1997-10-22
DE69709432T2 (de) 2002-08-22
EP0802542A3 (de) 1998-10-21
ATE211578T1 (de) 2002-01-15
DE69709432D1 (de) 2002-02-07

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