EP0025091A2 - Isolation pour haute tension, résistant à l'eau, pour câbles électriques et procédé pour leur fabrication - Google Patents

Isolation pour haute tension, résistant à l'eau, pour câbles électriques et procédé pour leur fabrication Download PDF

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Publication number
EP0025091A2
EP0025091A2 EP80103644A EP80103644A EP0025091A2 EP 0025091 A2 EP0025091 A2 EP 0025091A2 EP 80103644 A EP80103644 A EP 80103644A EP 80103644 A EP80103644 A EP 80103644A EP 0025091 A2 EP0025091 A2 EP 0025091A2
Authority
EP
European Patent Office
Prior art keywords
insulation
water
silane compounds
silanes
moisture
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.)
Granted
Application number
EP80103644A
Other languages
German (de)
English (en)
Other versions
EP0025091A3 (en
EP0025091B1 (fr
Inventor
Hermann-Uwe Dr. Dipl.-Chem. Voigt
Cornelius Dipl.-Ing. Van Hove
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.)
Kabelmetal Electro GmbH
Original Assignee
Kabelmetal Electro GmbH
KM Kabelmetal 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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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6079743&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0025091(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kabelmetal Electro GmbH, KM Kabelmetal AG filed Critical Kabelmetal Electro GmbH
Priority to AT80103644T priority Critical patent/ATE41075T1/de
Publication of EP0025091A2 publication Critical patent/EP0025091A2/fr
Publication of EP0025091A3 publication Critical patent/EP0025091A3/de
Application granted granted Critical
Publication of EP0025091B1 publication Critical patent/EP0025091B1/fr
Expired 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
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/46—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes silicones
    • 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
    • H01B7/2813—Protection against damage caused by electrical, chemical or water tree deterioration

Definitions

  • DOS 28 17 804 It is also already planned (DOS 28 17 804) to arrange a further layer containing a hygroscopic material in an energy cable outside and separate from the outer semiconducting layer, which limits the relative humidity of the environment including the conductor insulation to a value not exceeding 70% and stabilized. This is said to lead to a real protection of the insulation even if it contains voids and impurities.
  • the invention is therefore based on the object of ensuring permanent protection of the cable insulation against the influence of moisture, without having to go over to expensive new cable constructions with perhaps other disadvantages.
  • silanes or silane compounds are grafted onto the macromolecules of the base polymers or base copolymers and are thus chemically bound to them.
  • This chemical binding of the "inhibitors” guarantees long-term protection, since the silanes do not migrate out of the insulation, even at operating voltage and operating temperatures.
  • This grafting and thus the permanent protection against water trees is independent of whether the insulating material, for. As polyethylene, forms the cable insulation in a cross-linked or non-cross-linked state.
  • silanes or corresponding compounds the already known ones, for example a vinyltrimethoxysilane, a vinyltrieth-o: iris, ilane or similar vinyllaanes, which have other hydrolyzable alkoxy groups instead of the methoxy or athoxy groups, can be used.
  • amounts of 0.2-10%, preferably 1.0-3.0% by weight, of silanes can be used in carrying out the invention.
  • the crosslinking sites are formed in the already crystallized state of the insulation, ie exclusively and only in the amorphous regions.
  • the crystal structure itself remains largely undisturbed by cross-linking points, which are weak points in the crystal structure for possible water trees.
  • Polyfunctional crosslinking points in the amorphous region of the solidified base polymers or base copolymers forming the insulation also give the polymer material a higher structural strength. Both effects - high undisturbed crystallinity and cross-linking nodes in the amorphous area of the insulation - lead to an increased, over the life of the cable constant resistance to water tree growth.
  • the physico-chemical property of the siloxane group Si-O-Si to repel water also plays an important role in protecting insulation according to the invention.
  • the polymer for example polyethylene, is quasi "hydrophobized" in its amorphous areas, i. H. water-repellent. As a result, both the pure diffusion and the electrophoretic diffusion taking place under the influence of the alternating electrical field are slowed down and the material is thus more resistant to water trees.
  • the insulation 3 should be resistant to water trees, for this purpose it can consist of a wide variety of polymer materials, on the molecules of which silanes or silane compounds are grafted.
  • the insulation can have the following composition:
  • Insulation according to the invention can be produced, for example, by means of two extruders connected in series. (Cascade technology).
  • the silanes contained in the mixture are mixed, homogenized and grafted, while the second extruder is used to mold the mass which has already been grafted and delivered via a connecting part.
  • the latter can also be degassed in the transfer area.
  • any other method is also suitable if it is only ensured that the added silanes or silane compounds are grafted.
  • a two-step process is also possible, in which the grafting process is carried out in the first step, then the grafted material is blended with a catalyst batch and in a second step the material thus prepared is finally shaped by a shaping extrusion.
  • High-voltage cables in the sense of the invention are therefore to be understood to mean all electrical cables which are preferably operated with an operating voltage of 20 kV and above.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Insulating Materials (AREA)
  • Insulated Conductors (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)
  • Graft Or Block Polymers (AREA)
EP80103644A 1979-08-31 1980-06-27 Isolation pour haute tension, résistant à l'eau, pour câbles électriques et procédé pour leur fabrication Expired EP0025091B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80103644T ATE41075T1 (de) 1979-08-31 1980-06-27 Wasserfeste hochspannungsisolierung fuer elektrische kabel und verfahren zu deren herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2935224 1979-08-31
DE19792935224 DE2935224A1 (de) 1979-08-31 1979-08-31 Wasserfeste hochspannungsisolierung fuer elektrische kabel

Publications (3)

Publication Number Publication Date
EP0025091A2 true EP0025091A2 (fr) 1981-03-18
EP0025091A3 EP0025091A3 (en) 1981-09-02
EP0025091B1 EP0025091B1 (fr) 1989-03-01

Family

ID=6079743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103644A Expired EP0025091B1 (fr) 1979-08-31 1980-06-27 Isolation pour haute tension, résistant à l'eau, pour câbles électriques et procédé pour leur fabrication

Country Status (6)

Country Link
EP (1) EP0025091B1 (fr)
JP (1) JPS5636806A (fr)
AT (1) ATE41075T1 (fr)
AU (1) AU6087480A (fr)
CA (1) CA1153798A (fr)
DE (1) DE2935224A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129121A1 (fr) * 1983-06-01 1984-12-27 Union Carbide Corporation Compositions à base de copolymères d'alkylène-acrylate d'alkyle et de catalyseurs de condensation de silanols, et leur utilisation pour la fabrication de câbles électriques
FR2592205A1 (fr) * 1985-12-20 1987-06-26 Pirelli Cavi Spa Cables electriques et matieres pour former des revetements de conducteurs de cables electriques
EP0259653A3 (en) * 1986-08-22 1988-07-27 Licentia Patent-Verwaltungs-Gmbh Plastic insulation comprising a voltage stabilizer
EP0294543A3 (fr) * 1987-05-27 1990-05-09 Kaiser Kabel GmbH Matériau isolant électrique à résistance diélectrique durable
EP0491066A1 (fr) * 1989-06-19 1992-06-24 Sumitomo Electric Industries, Ltd. Câble de puissance
EP0621607A1 (fr) * 1993-04-20 1994-10-26 Dow Corning Corporation Méthode d'augmentation de la rigidité diélectrique d'un câble par utilisation d'un mélange fluide
EP0621608A1 (fr) * 1993-04-20 1994-10-26 Dow Corning Corporation Méthode d'augmentation de la rigidité diélectrique d'un cable par utilisation d'un fluide ayant un grand coefficient de diffusion
CN115322377A (zh) * 2022-09-01 2022-11-11 广东电网有限责任公司广州供电局 一种预缩合电力电缆绝缘老化修复液及其制备方法和应用

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318988A1 (de) 1983-05-25 1984-11-29 Siemens AG, 1000 Berlin und 8000 München Elektrische isolierungen
JP2758594B2 (ja) * 1985-11-21 1998-05-28 日本電気株式会社 チャージポンプ回路
DE3739738A1 (de) * 1987-11-24 1989-06-08 Licentia Gmbh Kunststoffisolierung zur stabilisierung gegen spannungsinduzierte defekte
JP4855231B2 (ja) * 2006-12-05 2012-01-18 株式会社奥村組 屋根の遮熱システム
CN104240824B (zh) * 2014-10-11 2016-11-09 无锡鑫宏业特塑线缆有限公司 电动汽车高压电池连接线
CN106298035A (zh) * 2015-07-26 2017-01-04 常熟市谷雷特机械产品设计有限公司 一种用于电力系统的高压电缆

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE786958A (fr) * 1969-01-22 1973-01-29 Raychem Corp Isolants haute tension.
DE2555018A1 (de) * 1975-12-06 1977-06-16 Kabel Metallwerke Ghh Feuchtigkeitsvernetzbare umhuellung fuer langgestrecktes gut
DE2554944A1 (de) * 1975-12-06 1977-06-23 Kabel Metallwerke Ghh Feuchtigkeitsvernetzter thermoplastischer kautschuk
DE2737430C2 (de) * 1977-08-19 1983-03-17 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Polyolefinisolierung mit einem Spannungsstabilisator
ZA787062B (en) * 1977-12-27 1980-04-30 Union Carbide Corp Wire or cable insulated with a dielectric composition stabilized against water treeing with organo silane compounds

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129121A1 (fr) * 1983-06-01 1984-12-27 Union Carbide Corporation Compositions à base de copolymères d'alkylène-acrylate d'alkyle et de catalyseurs de condensation de silanols, et leur utilisation pour la fabrication de câbles électriques
FR2592205A1 (fr) * 1985-12-20 1987-06-26 Pirelli Cavi Spa Cables electriques et matieres pour former des revetements de conducteurs de cables electriques
EP0259653A3 (en) * 1986-08-22 1988-07-27 Licentia Patent-Verwaltungs-Gmbh Plastic insulation comprising a voltage stabilizer
EP0294543A3 (fr) * 1987-05-27 1990-05-09 Kaiser Kabel GmbH Matériau isolant électrique à résistance diélectrique durable
EP0491066A1 (fr) * 1989-06-19 1992-06-24 Sumitomo Electric Industries, Ltd. Câble de puissance
EP0621607A1 (fr) * 1993-04-20 1994-10-26 Dow Corning Corporation Méthode d'augmentation de la rigidité diélectrique d'un câble par utilisation d'un mélange fluide
EP0621608A1 (fr) * 1993-04-20 1994-10-26 Dow Corning Corporation Méthode d'augmentation de la rigidité diélectrique d'un cable par utilisation d'un fluide ayant un grand coefficient de diffusion
CN115322377A (zh) * 2022-09-01 2022-11-11 广东电网有限责任公司广州供电局 一种预缩合电力电缆绝缘老化修复液及其制备方法和应用
CN115322377B (zh) * 2022-09-01 2024-03-26 广东电网有限责任公司广州供电局 一种预缩合电力电缆绝缘老化修复液及其制备方法和应用

Also Published As

Publication number Publication date
CA1153798A (fr) 1983-09-13
ATE41075T1 (de) 1989-03-15
DE2935224A1 (de) 1981-03-19
AU6087480A (en) 1981-03-05
EP0025091A3 (en) 1981-09-02
EP0025091B1 (fr) 1989-03-01
JPS5636806A (en) 1981-04-10

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