EP0815567A1 - Elektrokabel - Google Patents
ElektrokabelInfo
- Publication number
- EP0815567A1 EP0815567A1 EP96905648A EP96905648A EP0815567A1 EP 0815567 A1 EP0815567 A1 EP 0815567A1 EP 96905648 A EP96905648 A EP 96905648A EP 96905648 A EP96905648 A EP 96905648A EP 0815567 A1 EP0815567 A1 EP 0815567A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal screen
- cable
- adhesive
- semiconductor layer
- cable according
- 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
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 39
- 239000004065 semiconductor Substances 0.000 claims abstract description 26
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 230000007935 neutral effect Effects 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 230000008961 swelling Effects 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000011889 copper foil Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002313 adhesive film Substances 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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 with at least one electrical conductor and a multi-layer insulation system enclosing it, which has an insulation sheath, at least one semiconductor layer, a metal shield enveloping it and an outer jacket, the metal shield serving as a neutral conductor having a along the Cable extending overlap point is provided.
- An electrical cable of the generic type according to Swiss patent application No. 00 610 / 92-4 is preferably suitable as a medium voltage cable for voltages between 10 and 50 kV or as a high voltage cable up to 420 kV.
- a centrally arranged electrical conductor produced from a plurality of copper or aluminum wires stranded together and from a multilayer insulation which surrounds the latter in an annular manner, which consists of a first semiconductor layer surrounding the conductor, and one made of an aging-resistant plastic, for example of cross-linked polyethylene , existing insulating sleeve, a second semiconductor layer, a swelling tape, a neutral conductor and an outer jacket made of plastic.
- the neutral conductor which is ring-shaped in cross section, is formed from a metal foil strip which is wrapped around the swelling band and completely envelops it and which forms an overlap point with its band edges.
- This known electrical cable which can be single-core or a three-conductor cable, can be manufactured in an extremely compact manner and has a high resistance to aging.
- the same When the same is laid, for example, in a cable pipe or the like laid in the ground, it is constantly exposed to moist ambient air in many applications and, despite the outer sheath consisting of plastic, water vapor particles can infiltrate in this, thereby increasing the service life of this insulation and thus of the cable can decrease.
- the object of the present invention is to develop an electrical cable of the type described in the introduction in such a way that, with simple manufacture presupposed, neither liquid nor moisture, in particular water vapor, can penetrate into the interior and achieve an increased resistance to aging compared to conventional cables becomes.
- the object is achieved in that the metal screen is joined at its overlap point in a sealing manner throughout the entire cable length, preferably by means of an adhesive, and thus forms a liquid and vapor-barrier protective sheath of the cable interior.
- the entire inside of this metal screen is provided with an adhesive designed as a semiconductor, which is designed as a film and is attached to the inside of the metal screen before the cable is manufactured.
- This electrical cable according to the invention offers absolute tightness, in particular in the case of simple and therefore inexpensive production, in particular before moisture and liquid penetrate.
- the inside of this metal screen is protected against corrosion by the adhesive film attached to it.
- FIG. 1 is the only figure showing a perspective view of an electrical cable according to the invention, illustrated in section on the end face.
- FIG. 1 shows an electrical cable 10, which is used in particular for medium voltages in a voltage range between 10 and 50 kV or for high voltages up to 420 kV, and an electrically arranged center made of a plurality of copper or aluminum wires 14 or the like which are stranded together ⁇ trical conductor 12 and a multi-layer insulation system enclosing this.
- the latter has a semiconductor layer 15 surrounding the electrical conductor 12, an insulation sleeve 16 encompassing it, an outer semiconductor layer 17, a metal shield 20 enveloping the latter and serving as a neutral conductor, and an outer jacket 18.
- An aluminum foil strip is provided for the metal screen 20, which is placed along the cable around the outer semiconductor layer 17 and has such a width that it forms an overlap point 22 extending along the cable 10.
- the band edges over lapping at an angle of at least 10 °, but they could overlap to such an extent that this metal screen would be sheathed two or more times around the interior of the cable.
- the metal screen 20 is joined at its overlap point 22 in a sealing manner over the entire cable length by means of an adhesive 23 and thus forms a liquid and vapor impermeable protective sheath for the inside of the cable.
- the adhesive 23 is applied to the entire inside of the metal screen 20, advantageously in the form of a semiconductor film, and is glued to the inside of the metal screen 20 by a pressing process before the cable is manufactured.
- the adhesive 23 expediently consists essentially of an adhesive material and of chemically produced carbon black, and its formation as a semiconductor enables electrical contact from the metal screen to the outer semiconductor layer 17, despite the adhesive film located between them in full.
- a swelling band 19 likewise formed as a semiconductor, is advantageously inserted, which primarily has two functions.
- this swelling band 19 absorbs the water penetrating into the cable interior as well as the moisture, and the strong swelling of the latter causes the water to continue flowing in the longitudinal direction of the cable prevented.
- this swelling tape 19 performs a cushioning function, in particular the insulation sleeve 16, which changes in the outer diameter when the cable is laid, and the semiconductor layer 17 surrounding it.
- This swelling tape 19 is made of a nonwoven fabric or the like with a plastic coating applied to the inside as well as to the outside, the latter being mixed with carbon particles, which give the source tape the semiconducting property as a whole.
- the first semiconductor layer 15, the insulation sheath 16 and the outer semiconductor layer 17 are first pulled on one after the other. Then the swelling tape 19 is applied around the outer semiconductor layer 17 and then the tape-shaped metal screen 20 is placed around it and glued to the overlap point 22 by heating it up, for example to approximately 120 ° Celsius. Finally, the outer jacket 18, in which a tough polyethylene insulation material is used, is drawn around the metal screen 20, with a vacuum or partial vacuum advantageously being created between these to create perfect adhesion of this outer jacket to the metal screen, or the Outer jacket 18 is applied to the metal screen 20 by means of a press extrusion, in which the metal screen 20 is pulled onto the metal screen with pressure.
- Such an electrical cable generally has an outside diameter between 10 and 70 millimeters. It is used individually or as a three-wire cable, the three individual cables being twisted together in the latter application and being held together by a sheath comprising them.
- the foil strip used as a metal screen can also be made of copper or another electrically conductive material.
- the point of overlap of this film strip does not necessarily have to run parallel to the conductor along the cable, but the film could also be wound helically or in successive layers around the cable.
Landscapes
- Insulated Conductors (AREA)
- Inorganic Insulating Materials (AREA)
Description
Claims
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 (de) | 1995-03-14 | 1996-03-12 | Elektrokabel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0815567A1 true EP0815567A1 (de) | 1998-01-07 |
| EP0815567B1 EP0815567B1 (de) | 1999-02-03 |
Family
ID=4193643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96905648A Revoked EP0815567B1 (de) | 1995-03-14 | 1996-03-12 | Elektrokabel |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0815567B1 (de) |
| AT (1) | ATE176547T1 (de) |
| AU (1) | AU4936096A (de) |
| CH (1) | CH690473A5 (de) |
| DE (1) | DE59601264D1 (de) |
| WO (1) | WO1996028830A1 (de) |
Families Citing this family (1)
| 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)
| 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 |
-
1995
- 1995-03-14 CH CH00721/95A patent/CH690473A5/de not_active IP Right Cessation
-
1996
- 1996-03-12 WO PCT/CH1996/000091 patent/WO1996028830A1/de not_active Ceased
- 1996-03-12 DE DE59601264T patent/DE59601264D1/de not_active Expired - Fee Related
- 1996-03-12 AT AT96905648T patent/ATE176547T1/de not_active IP Right Cessation
- 1996-03-12 EP EP96905648A patent/EP0815567B1/de not_active Revoked
- 1996-03-12 AU AU49360/96A patent/AU4936096A/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9628830A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4936096A (en) | 1996-10-02 |
| EP0815567B1 (de) | 1999-02-03 |
| ATE176547T1 (de) | 1999-02-15 |
| CH690473A5 (de) | 2000-09-15 |
| DE59601264D1 (de) | 1999-03-18 |
| WO1996028830A1 (de) | 1996-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1484945A1 (de) | Elektrische Heizleitung oder Heizband | |
| DE69708674T2 (de) | Elektrische energiekabel | |
| DE29880161U1 (de) | Isolierter elektrischer Leiter | |
| CH708133B1 (de) | Elektrokabel, insbesondere für Solar- bzw. Windkraftwerke. | |
| DE69830706T2 (de) | Elektrische energiekabel | |
| EP0815567A1 (de) | Elektrokabel | |
| DE1690498A1 (de) | Einsteckendverschluss fuer abgeschirmte Hochspannungskabel zur Einfuehrung in ein elektrisches Geraet | |
| DE2947082A1 (de) | Feuchtigkeitsgeschuetztes kunststoffisoliertes elektrisches energiekabel | |
| DE2719094A1 (de) | Kunststoffisoliertes mittel- oder hochspannungskabel | |
| DE2739600A1 (de) | Kabelendverschluss | |
| DE8613035U1 (de) | Abschirmmantel für Verkabelungen | |
| DE2811579A1 (de) | Feuchtigkeitsgeschuetztes elektrisches kunststoffisoliertes energiekabel | |
| DE69019955T2 (de) | Band für die Umhüllung von Endverschlüssen von Mittelspannungskabeln und von glatten Isolierungen. | |
| DE3306501A1 (de) | Starkstromkabel | |
| DE2508928A1 (de) | Kunststoffisoliertes, feuchtigkeitsfestes starkstromkabel | |
| DE102015216276B4 (de) | Einadriges Kabel mit einer Abdichtung gegen das Eindringen von Feuchte und einer Rücklaufader | |
| DE2516041C2 (de) | Anordnung zur Erdverbindung eines Kabelschirms und Verfahren zur Herstellung | |
| DE2832529A1 (de) | Gegen feuchtigkeit geschuetztes energiekabel | |
| DE2948651A1 (de) | Feuchtigkeitsgeschuetztes elektrisches kunststoffisoliertes energiekabel | |
| EP0779692A1 (de) | Verfahren zum Erden einer Abschirmung eines elektrischen Kabels sowie elektrisches Kabel | |
| DE6800779U (de) | Endverschluss fuer kunststoffisolierte hochspannungsleiter | |
| DD270456A3 (de) | Laenswasserdichtes starkstromkabel | |
| DE2537377C3 (de) | Anordnung zur Erdverbindung eines Kabelschirms | |
| DE9217804U1 (de) | Schirmanschluß für Starkstromkabel mit Schichtenmantel | |
| DE20006222U1 (de) | Elektrische Heizleitung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19970908 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| 17Q | First examination report despatched |
Effective date: 19980605 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19990203 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19990203 |
|
| REF | Corresponds to: |
Ref document number: 176547 Country of ref document: AT Date of ref document: 19990215 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990312 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: LUCHS & PARTNER PATENTANWAELTE |
|
| REF | Corresponds to: |
Ref document number: 59601264 Country of ref document: DE Date of ref document: 19990318 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19990325 Year of fee payment: 4 |
|
| ET | Fr: translation filed | ||
| ITF | It: translation for a ep patent filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19990503 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19990504 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19990419 |
|
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| PLAV | Examination of admissibility of opposition |
Free format text: ORIGINAL CODE: EPIDOS OPEX |
|
| PLBQ | Unpublished change to opponent data |
Free format text: ORIGINAL CODE: EPIDOS OPPO |
|
| PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
| 26 | Opposition filed |
Opponent name: KAISER KWO KABEL ENERGIE GMBH & CO Effective date: 19991102 Opponent name: ALCATEL Effective date: 19991102 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000312 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000312 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20000330 Year of fee payment: 5 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20000312 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20010326 Year of fee payment: 6 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20010327 Year of fee payment: 6 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20010409 Year of fee payment: 6 |
|
| PLBQ | Unpublished change to opponent data |
Free format text: ORIGINAL CODE: EPIDOS OPPO |
|
| PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |
|
| PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
| R26 | Opposition filed (corrected) |
Opponent name: ALCATEL * 19991102 KAISER KWO KABEL ENERGIE GMBH & Effective date: 19991102 |
|
| PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011130 |
|
| RDAH | Patent revoked |
Free format text: ORIGINAL CODE: EPIDOS REVO |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
| 27W | Patent revoked |
Effective date: 20011230 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |
|
| PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |