BR9814391A - Electric cable comprising a conductor, at least one insulating layer, an external metal shield and a layer of an expanded polymer material placed under said metal shield - Google Patents

Electric cable comprising a conductor, at least one insulating layer, an external metal shield and a layer of an expanded polymer material placed under said metal shield

Info

Publication number
BR9814391A
BR9814391A BR9814391-3A BR9814391A BR9814391A BR 9814391 A BR9814391 A BR 9814391A BR 9814391 A BR9814391 A BR 9814391A BR 9814391 A BR9814391 A BR 9814391A
Authority
BR
Brazil
Prior art keywords
metal shield
layer
cable
conductor
placed under
Prior art date
Application number
BR9814391-3A
Other languages
Portuguese (pt)
Inventor
Sergio Belli
Alberto Bareggi
Luigi Caimi
Luca Balconi
Original Assignee
Pirelli Cavi E Sistemi Spa
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 Pirelli Cavi E Sistemi Spa filed Critical Pirelli Cavi E Sistemi Spa
Priority claimed from PCT/EP1998/008284 external-priority patent/WO1999033070A1/en
Publication of BR9814391A publication Critical patent/BR9814391A/en

Links

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
    • H01B9/027—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of semi-conducting layers
    • 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
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • H01B7/288—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using hygroscopic material or material swelling in the presence of liquid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)
  • Insulated Conductors (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Communication Cables (AREA)
  • Organic Insulating Materials (AREA)

Abstract

"CABO ELéTRICO COMPREENDENDO UM CONDUTOR, PELO MENOS UMA CAMADA ISOLANTE, UMA BLINDAGEM DE METAL EXTERNA E UMA CAMADA DE UM MATERIAL DE POLìMERO EXPANDIDO COLOCADA SOB A DITA BLINDAGEM DE METAL" Cabo elétrico, em particular para transmissão por distribuição de potência em média ou alta tensão, tendo uma blindagem de metal e uma camada expandida de bloqueio d' água semicondutiva. Esta camada exerce três funções principais, a primeira é elasticamente e uniformemente absorver forças radiais de expansão e contração das camadas de revestimento do cabo devido a ciclos térmicos do cabo durante uso, assim prevenindo deformações ou rupturas na blindagem de metal, a segunda é garantir continuidade elétrica entre o núcleo de cabo e a blindagem de metal, a terceira é efetivamente evitar penetração e propagação de umidade e/ou água ao longo do núcleo do cabo devido, por exemplo, a possíveis rupturas na blindagem de metal. A terceira função é obtida incluindo na camada expandida um material dilatável por água."ELECTRICAL CABLE UNDERSTANDING A CONDUCTOR, AT LEAST AN INSULATING LAYER, AN EXTERNAL METAL SHIELD AND A LAYER OF EXPANDED POLYMER MATERIAL PLACED UNDER THIS METAL SHIELD" Electric cable, in particular for transmission by medium or high power distribution voltage, having a metal shield and an expanded layer of semiconductive water block. This layer has three main functions, the first is to elastically and uniformly absorb radial forces of expansion and contraction of the cable sheath layers due to thermal cycles of the cable during use, thus preventing deformations or breaks in the metal shield, the second is to ensure continuity electrical between the cable core and the metal shield, the third is to effectively prevent penetration and propagation of moisture and / or water along the cable core due, for example, to possible breaks in the metal shield. The third function is achieved by including a water-swelling material in the expanded layer.

BR9814391-3A 1997-12-22 1998-12-17 Electric cable comprising a conductor, at least one insulating layer, an external metal shield and a layer of an expanded polymer material placed under said metal shield BR9814391A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT97MI002839 IT1297001B1 (en) 1997-12-22 1997-12-22 Electrical cable, for power transmission
PCT/EP1998/008284 WO1999033070A1 (en) 1997-12-22 1998-12-17 Electrical cable having a semiconductive water-blocking expanded layer

Publications (1)

Publication Number Publication Date
BR9814391A true BR9814391A (en) 2000-10-10

Family

ID=11378423

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9814391-3A BR9814391A (en) 1997-12-22 1998-12-17 Electric cable comprising a conductor, at least one insulating layer, an external metal shield and a layer of an expanded polymer material placed under said metal shield

Country Status (8)

Country Link
AR (1) AR017949A1 (en)
AU (1) AU743935B2 (en)
BR (1) BR9814391A (en)
IT (1) IT1297001B1 (en)
RU (1) RU2217826C2 (en)
SK (1) SK286682B6 (en)
TR (1) TR200001922T2 (en)
ZA (1) ZA9811632B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2343183B1 (en) * 2010-01-07 2015-07-22 Armacell Enterprise GmbH & Co. KG Elastomeric low temperature insulation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145567A (en) * 1977-06-06 1979-03-20 General Cable Corporation Solid dielectric cable resistant to electrochemical trees
EP0116754A1 (en) * 1983-02-11 1984-08-29 Cable Technology Laboratories, Inc. High voltage electric power cable with thermal expansion accommodation
DE9208880U1 (en) * 1992-07-01 1992-11-19 Siemens AG, 8000 München Power cable with longitudinally watertight shield area

Also Published As

Publication number Publication date
IT1297001B1 (en) 1999-08-03
SK9352000A3 (en) 2001-06-11
SK286682B6 (en) 2009-03-05
ITMI972839A1 (en) 1999-06-22
ZA9811632B (en) 1999-10-06
AR017949A1 (en) 2001-10-24
RU2217826C2 (en) 2003-11-27
AU743935B2 (en) 2002-02-07
AU2274199A (en) 1999-07-12
TR200001922T2 (en) 2001-01-22

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Legal Events

Date Code Title Description
B07A Technical examination (opinion): publication of technical examination (opinion)
B25A Requested transfer of rights approved

Owner name: PIRELLI S.P.A. (IT)

Free format text: TRANSFERIDO POR INCORPORACAO DE: PIRELLI CAVI E SISTEMI S.P.A.

B25A Requested transfer of rights approved

Owner name: PIRELLI AND C. S.P.A. (IT)

Free format text: TRANSFERIDO POR INCORPORACAO DE: PIRELLI S.P.A.

B25A Requested transfer of rights approved

Owner name: PRYSMIAN CAVI E SISTEMI ENERGIA S.R.L. (IT)

Free format text: TRANSFERIDO DE: PIRELLI AND C. S.P.A.

B09B Decision: refusal

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O(S) ARTIGO(S) 8O E 13 DA LPI

B09B Decision: refusal

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL.