EP0700057A2 - Câble d'énergie étanche à l'eau longitudinalement et transversalement - Google Patents

Câble d'énergie étanche à l'eau longitudinalement et transversalement Download PDF

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Publication number
EP0700057A2
EP0700057A2 EP95109668A EP95109668A EP0700057A2 EP 0700057 A2 EP0700057 A2 EP 0700057A2 EP 95109668 A EP95109668 A EP 95109668A EP 95109668 A EP95109668 A EP 95109668A EP 0700057 A2 EP0700057 A2 EP 0700057A2
Authority
EP
European Patent Office
Prior art keywords
power cable
cable according
tape
screen
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.)
Granted
Application number
EP95109668A
Other languages
German (de)
English (en)
Other versions
EP0700057A3 (fr
EP0700057B1 (fr
Inventor
Dietmar Dipl.-Ing. Banowski
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.)
Nexans SA
Alcatel Lucent SAS
Original Assignee
Alcatel Kabel AG and Co
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 Alcatel Kabel AG and Co filed Critical Alcatel Kabel AG and Co
Publication of EP0700057A2 publication Critical patent/EP0700057A2/fr
Publication of EP0700057A3 publication Critical patent/EP0700057A3/fr
Application granted granted Critical
Publication of EP0700057B1 publication Critical patent/EP0700057B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01B7/17—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

Definitions

  • the present invention relates to a longitudinally and transversely watertight electrical energy cable with a screen made of metallic wires or strips arranged above the conductor insulation or a conductive layer above it, and a closed metallic sheath as a cross-water barrier in the further layer structure, the screen area containing swelling materials when exposed to moisture.
  • the so-called layered sheath which has long been used in the production of communication cables, in the form of a metal foil which surrounds the cable core and is sealed at the edges, has now become established that is glued to the outer jacket.
  • this measure protects the undamaged cable in normal, undisturbed operation, the layered jacket construction does not prevent water ingress and moisture conduction along the cable axis in the event of a fault if this moisture protection is destroyed at one point by the action of external forces.
  • the invention is therefore based on the object to find a way that allows the screen area of an electrical power cable to seal against moisture transmission, but at the same time to ensure that potential differences between the electrical screen of the power cable and the metallic sheath to ensure cross-water resistance in the Avoid cables from the outset.
  • This object is achieved according to the invention in that at least one swellable material and at the same time a strip containing conductive inserts is provided above the screen.
  • the swellable material ensures local limitation, e.g. B. after mechanical damage to the outer shell and the metallic shell, moisture penetration. At the same time, however, it also guarantees that the swelling material closes cavities at the point of damage and thus prevents further penetration of moisture into the interior of the cable.
  • the Conductive inserts also ensure a permanent electrically conductive contact between the cable shield and the metallic sheath if the tape according to the invention directly surrounds the shield wires or tapes or a transverse helix applied thereon and the metallic sheath, for. B. in the form of an aluminum tape applied with overlapping tape edges.
  • the tape used is a nonwoven tape containing swellable material and doped with metal particles.
  • the basis of such so-called swellable nonwovens is formed by plastic layer nonwovens, the layers of which are built up from or contain swellable material.
  • Swellable masses for example in powder form, can be those based on cellulose but also those based on synthetic materials.
  • Such tapes allow a short-term access to moisture to the swellable material, moreover, by installing the swellable material in such tape material, a simple manufacturing process is guaranteed and ensured that the materials to be sealed off the cable core even after the manufacture of the cable, the transport or its installation to the Places are available where they effectively block the damaged area when moisture breaks in.
  • the conductive material also embedded in such a swellable nonwoven in addition to the swellable material can consist, for example, of metal tinsel or short threads, for example of copper or aluminum, the usual wall thickness of such swellable nonwovens ensures that a constant metallic conductive contact between the metallic shield of the metal over the cable length Cable and the metallic sheath used for water resistance is ensured.
  • the tape is a non-woven tape containing swellable material and interwoven with metallic threads or strips.
  • the metallic thread or strip e.g. B. made of aluminum or copper, runs alternately from one surface of the tape to the other, in addition to the simultaneous, problem-free contacting of the metallic shield and the metallic sheath ensures this embodiment regular cross-connections along the entire cable route.
  • possible potential differences along the cable are compensated, special measures to compensate for potential differences, for example in the socket area, are no longer necessary.
  • the arrangement of the tape according to the invention in the layer structure of the cable can be such that the swellable material and tape containing conductive inserts run in the longitudinal direction of the cable.
  • it can often be expedient to let two or more bands run in the longitudinal direction on opposite sides in the cable. This is particularly the case if additional winding devices are to be dispensed with in the production process.
  • the band containing swellable materials and conductive inserts helically surrounds the screen.
  • Such a winding can be applied in the form of a closed layer, but one can also apply two tapes in opposite directions and at a distance to the shielding of the electrical cable, so that a so-called cross helix results as the image.
  • the decisive factor is that in addition to the plugging by embedded swellable material, a permanent electrical connection between the screen and the Cross-watertight metallic sheath along the cable is ensured.
  • the so-called inner conductive layer 2 for example made of a soot-filled polymer material, extruded.
  • This inner conductive layer 2 is followed by the electrical insulation 3, for example made of a cross-linked polyethylene, it is covered by the so-called outer conductive layer 4, in the illustrated embodiment also made of a carbon-black conductive polymer material, such as polyethylene or one of its copolymers.
  • a conductive tape 5 is arranged above the outer conductive layer 4, for example a crepe paper tape made conductive by graphite or carbon black, optionally in combination with a swellable nonwoven tape.
  • This conductive tape 5 serves practically as a cushion layer for the screen 6 located above it from z.
  • the tape 7 designed according to the invention, also swellable nonwoven, is used to block the shield area and to prevent it from being passed on to the cable at one point. ensures constant contact between the screen 6 and the metallic sheath 8 arranged above the band 7.
  • This metallic shell 8 is, for example, one on the polyethylene outer jacket 9 facing surface with a copolymer of ethylene or a hot melt adhesive coated aluminum tape, the tape edges overlap each other and which are glued together in the overlap area.
  • a permanent connection to the outer jacket takes place after the coating of the aluminum strip has melted and has hardened again after cooling.

Landscapes

  • Insulated Conductors (AREA)
  • Communication Cables (AREA)
  • Building Environments (AREA)
  • Bridges Or Land Bridges (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
EP95109668A 1994-09-02 1995-06-22 Câble d'énergie étanche à l'eau longitudinalement et transversalement Expired - Lifetime EP0700057B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4431221 1994-09-02
DE4431221A DE4431221A1 (de) 1994-09-02 1994-09-02 Längs- und querwasserdichtes Energiekabel

Publications (3)

Publication Number Publication Date
EP0700057A2 true EP0700057A2 (fr) 1996-03-06
EP0700057A3 EP0700057A3 (fr) 1996-10-09
EP0700057B1 EP0700057B1 (fr) 1998-10-21

Family

ID=6527216

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109668A Expired - Lifetime EP0700057B1 (fr) 1994-09-02 1995-06-22 Câble d'énergie étanche à l'eau longitudinalement et transversalement

Country Status (6)

Country Link
EP (1) EP0700057B1 (fr)
AT (1) ATE172573T1 (fr)
DE (2) DE4431221A1 (fr)
DK (1) DK0700057T3 (fr)
ES (1) ES2125521T3 (fr)
NO (1) NO953449L (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0890961A3 (fr) * 1997-07-10 1999-06-16 Alcatel Câble électrique
EP1128396A1 (fr) * 2000-02-28 2001-08-29 Nexans Câble électrique
WO2004006272A1 (fr) * 2002-05-27 2004-01-15 Telefonaktiebolaget L M Ericsson (Publ) Cable a barrette de blindage
EP2317525A1 (fr) * 2009-11-03 2011-05-04 Nexans Câble électrique pour moyenne et haute tension
EP2034491A3 (fr) * 2007-09-05 2012-04-11 HEW-KABEL GmbH Ligne de données électrique, très flexible et blindée

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008015693U1 (de) 2008-11-26 2009-02-19 Draka Comteq Berlin Gmbh & Co. Kg Kommunikationskabel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005875A1 (de) 1980-02-16 1981-09-03 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Feuchtigkeitsgeschuetztes kunststoffisoliertes elektrisches energiekabel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE462099B (sv) * 1985-11-15 1990-05-07 Dow Chemical Co Emi avskaermningskompositmaterial
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
DE3840200C2 (de) * 1988-11-29 1996-02-08 Heraeus Noblelight Gmbh Verfahren zur Herstellung eines Vlieses
US5010209A (en) * 1988-12-20 1991-04-23 Pirelli Cable Corp. Power cable with water swellable agents and elongated metal elements outside cable insulation
ATE107794T1 (de) * 1989-04-07 1994-07-15 Siemens Ag Extrudierbare mischung auf polymerbasis für elektrische kabel und elektrisches kabel mit einem innenmantel aus dieser mischung.
DE9208880U1 (de) * 1992-07-01 1992-11-19 Siemens AG, 8000 München Starkstromkabel mit längswasserdichtem Schirmbereich
DE4306835A1 (de) * 1993-03-05 1994-09-08 Kabelwerk Koepenick Gmbh Längswasserdichtes elektrisches Kabel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005875A1 (de) 1980-02-16 1981-09-03 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Feuchtigkeitsgeschuetztes kunststoffisoliertes elektrisches energiekabel

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0890961A3 (fr) * 1997-07-10 1999-06-16 Alcatel Câble électrique
EP1128396A1 (fr) * 2000-02-28 2001-08-29 Nexans Câble électrique
WO2004006272A1 (fr) * 2002-05-27 2004-01-15 Telefonaktiebolaget L M Ericsson (Publ) Cable a barrette de blindage
US7053309B2 (en) 2002-05-27 2006-05-30 Telefonaktiebolaget Lm Ericsson (Publ) Cable with shielding strip
CN1328734C (zh) * 2002-05-27 2007-07-25 艾利森电话股份有限公司 一种带有屏蔽片的电缆
EP1508145B1 (fr) 2002-05-27 2016-02-24 NKT Cables Group A/S Cable a barrette de blindage
EP3002763B1 (fr) 2002-05-27 2018-07-25 NKT Cables Group A/S Un câble électrique isolé
EP2034491A3 (fr) * 2007-09-05 2012-04-11 HEW-KABEL GmbH Ligne de données électrique, très flexible et blindée
EP2317525A1 (fr) * 2009-11-03 2011-05-04 Nexans Câble électrique pour moyenne et haute tension
WO2011054887A1 (fr) * 2009-11-03 2011-05-12 Nexans Câble électrique pour moyenne ou haute tension
US9281102B2 (en) 2009-11-03 2016-03-08 Nexans Electric power cable for medium or high voltage

Also Published As

Publication number Publication date
DK0700057T3 (da) 1999-06-28
NO953449L (no) 1996-03-04
EP0700057A3 (fr) 1996-10-09
DE59503976D1 (de) 1998-11-26
EP0700057B1 (fr) 1998-10-21
NO953449D0 (no) 1995-09-01
ES2125521T3 (es) 1999-03-01
ATE172573T1 (de) 1998-11-15
DE4431221A1 (de) 1996-03-07

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