EP0815567B1 - Elektrokabel - Google Patents
Elektrokabel Download PDFInfo
- Publication number
- EP0815567B1 EP0815567B1 EP96905648A EP96905648A EP0815567B1 EP 0815567 B1 EP0815567 B1 EP 0815567B1 EP 96905648 A EP96905648 A EP 96905648A EP 96905648 A EP96905648 A EP 96905648A EP 0815567 B1 EP0815567 B1 EP 0815567B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal screen
- adhesive
- cable
- conductor
- electric 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
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 43
- 239000004065 semiconductor Substances 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 239000000853 adhesive Substances 0.000 claims abstract description 16
- 230000001070 adhesive effect Effects 0.000 claims abstract description 16
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 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 5
- 239000011888 foil Substances 0.000 claims description 16
- 230000008961 swelling Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 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
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 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
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 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
- 230000035515 penetration 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
- 238000010792 warming Methods 0.000 description 1
Images
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 according to the preamble of Claim 1.
- a generic electrical cable is suitable preferably as a medium voltage cable for voltages between 10 and 50 kV or also as high-voltage cable up to 420 kV.
- a known electrical cable according to US-5,281,757 consists essentially of a centrally arranged, several copper or aluminum wires stranded together generated electrical conductor and ring-shaped from the latter enclosing multi-layer insulation, which from a Conductor surrounding first semiconductor layer, one made of an aging-resistant Plastic, for example made of cross-linked polyethylene, existing insulation sheath, a second semiconductor layer, a Swelling tape, a neutral conductor and one made of plastic manufactured outer jacket is manufactured.
- the ring-shaped in cross section The neutral conductor is from a band around the source band, this completely enveloping metal foil tape formed with its band edges forms an overlap point. This metal foil is glued together at this point of overlap.
- the aim is that the metal foil almost floating between the outer Sheath and the layer adjacent to the inside is arranged.
- the metal foil almost floating between the outer Sheath and the layer adjacent to the inside is arranged.
- there is a gap between the outer jacket and Metal foil is no longer given a full temperature conductivity, which in the event of a short circuit is more likely to destroy the Can lead metal foil.
- the isolation through the Layer between the metal foil and the internal semiconductor not beneficial.
- the object of the present invention is an electric cable according to the type described above to further develop that in the case of this being easier Manufacturing neither liquid nor moisture, especially Water vapor, can penetrate inside and with this one increased resistance to aging compared to conventional cables is achieved.
- the object is characterized by the characterizing part of the claim 1 solved.
- this metal screen is on its entire inside with a semiconductor designed Provide adhesive, which is designed as a film and before Finishing the cable attached to the inside of the metal screen is.
- This electric cable according to the invention offers simple and consequently, cost-effective manufacture, absolute tightness especially before moisture and liquid penetration.
- the inside of this metal shade protected against corrosion by the adhesive film attached to it.
- FIG. 1 shows an electrical cable 10, which is particularly suitable for medium voltages in a voltage range between 10 and 50 kV or for high voltages up to 420 kV and one centrically arranged, made of several copper or aluminum wires 14 or the like produced electrical Conductor 12 and a multilayer enclosing it Isolation system includes.
- the latter has a electrical conductor 12 surrounding semiconductor layer 15, one of these comprehensive insulation sleeve 16, an outer semiconductor layer 17, a metal shield which surrounds the latter and serves as a neutral conductor 20 and an outer jacket 18.
- For the metal screen 20 is an aluminum foil tape is provided, which runs along the cable is placed around the outer semiconductor layer 17 and such Width that there is a along the cable 10th extending overlap point 22 forms.
- the band edges overlap at an angle of at least 10 °, they could but overlap so far that this metal screen two or would be sheathed several times around the inside of the cable.
- the metal screen 20 is at its overlap point 22 continuously over the entire cable length an adhesive 23 sealingly joined together and thus forms a liquid and vapor impermeable protective sleeve inside the cable.
- the adhesive 23 is on the entire inside the metal screen 20 attached, advantageously as a semiconductor film trained and prior to manufacturing the cable by a pressing process glued to the inside of the metal screen 20.
- the adhesive 23 exposes itself essentially an adhesive material and chemically produced carbon black and its formation as a semiconductor enables an electrical Contact from the metal screen to the outer semiconductor layer 17 in spite of the full range between them Adhesive film.
- the outer semiconductor layer 17 and the metal screen 20 is also a semiconductor Source tape 19 inserted, which primarily has two functions. If the outer layer of the cable is damaged, which has, among other things, cracked the metal screen this swelling band 19 the water penetrating into the interior of the cable as well as the moisture and the strong swelling The same will cause the water to continue flowing in the longitudinal direction of the cable prevented.
- this swelling band 19 due to its elastic design, a cushion function in particular the outer diameter when the cable is installed changing insulation sleeve 16 and this surrounding semiconductor layer 17.
- This swelling band 19 is out a nonwoven fabric or the like with one on the inside like also plastic coating applied on the outside manufactured, the latter being mixed with carbon particles, which gives the source tape the semiconducting property as a whole to lend.
- Such an electrical cable usually has an outside diameter between 10 and 70 millimeters. It will be single or used as a three-wire cable, in the latter case of application the three individual cables are stranded together and by are held together in a comprehensive coat.
- the foil tape used as a metal screen can in principle also made of copper or another electrically conductive material be.
- the point of overlap of this film strip must also do not necessarily run parallel to the conductor along the cable, but the film could also be helical or in a row following layers around the cable.
Landscapes
- Insulated Conductors (AREA)
- Inorganic Insulating Materials (AREA)
Description
- Fig. 1
- als einzige Figur eine perspektivische Darstellung eines erfindungsgemässen, stirnseitig im Schnitt veranschaulichten Elektrokabels.
Claims (7)
- Elektrokabel, mit mindestens einem elektrischen Leiter (12) und einem diesen umschliessendes mehrschichtiges Isolations-System, welches eine den Leiter (12) umgebende Halbleiterschicht (15), eine diese umfassende Isolationshülle (16), eine äussere Halbleiterschicht (17), einen Metallschirm-Nulleiter (20) sowie einen Aussenmantel (18) aufweist, wobei der Metallschirm (20) mit einer sich entlang des Kabels erstreckenden Überlappungsstelle (22) versehen ist, an welcher der Metall schirm (20) durchgehend über die gesamte Kabellänge vorzugsweise mittels eines Klebstoffes (23) abdichtend zusammengefügt ist und somit eine flüssigkeits- und dampfundurchlässige Schutzhülle des Kabelinnerns bildet, gekennzeichnet durch die Kombination folgender Merkmale:dass ein innerhalb des Metallschirm-Nulleiters (20) vorgesehenes Quellband (19) in welchem Wasser oder Feuchtigkeit absorbierbar und es bei Wasseraufnahme aufquellbar ist, halbleitend ausgebildet ist und zudem der Klebstoff (23) aus einem Halbleiter-Material hergestellt ist,dass der Aussenmantel (18) auf den Metallschirm (20) aufgezogen ist indem zwischen diesen zumindest ein Teilvakuum zwecks Schaffung einer einwandfreien Haftung des Aussenmantels am Metallschirm erzeugt ist, oderdass der Aussenmantel (18) mittels einer Press-Extrusion auf den Metallschirm (20) aufgebracht ist, bei dem dieser mit Druck auf den Metallschirm (20) aufgezogen ist.
- Elektrokabel nach Anspruch 1, dadurch gekennzeichnet, dass der Metallschirm (20) an seiner gesamten Innenseite mit einem Klebstoff (23) versehen ist.
- Elektrokabel nach Anspruch 1, dadurch gekennzeichnet, dass der Klebstoff (23) als Folie an der Innenseite des Metallschirms (20) angebracht ist.
- Elektrokabel nach Anspruch 1, dadurch gekennzeichnet, dass sich der Klebstoff (23) im wesentlichen aus einem Klebermaterial sowie aus einem diesem beigemischten, chemisch erzeugten Russ zusammensetzt.
- Elektrokabel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass für den Metallschirm (20) ein aus Aluminium oder Kupfer bestehendes Folienband verwendet wird, wobei dieses Folienband entlang des Kabels (10) um die äussere Halbleiterschicht (17) gelegt ist und eine solche Breite aufweist, dass es die entlang des Kabels (10) verlaufende Überlappungsstelle (22) bildet.
- Elektrokabel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Quellband (19) aus einem Vliesstoff oder dergleichen mit einer auf dessen Innen- wie auch auf der Aussenseite aufgetragenen Kunststoffbeschichtung gefertigt ist, wobei letzterer Kohlenstoffpartikel zugemischt sind, welche dem Quellband insgesamt die halbleitende Eigenschaft verleihen.
- Elektrokabel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Klebstoff (23) bei annähernd höher als 80° Celsius mit dem Metallschirm (20) verklebbar ist.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH00721/95A CH690473A5 (de) | 1995-03-14 | 1995-03-14 | Elektrokabel. |
| CH721/95 | 1995-03-14 | ||
| PCT/CH1996/000091 WO1996028830A1 (de) | 1995-03-14 | 1996-03-12 | Elektrokabel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0815567A1 EP0815567A1 (de) | 1998-01-07 |
| EP0815567B1 true 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 |
| FI863463L (fi) * | 1985-08-30 | 1987-03-01 | Kable Tapes Ltd | Skyddstejp foer elektriska kraftkablar. |
| 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 DE DE59601264T patent/DE59601264D1/de not_active Expired - Fee Related
- 1996-03-12 EP EP96905648A patent/EP0815567B1/de not_active Revoked
- 1996-03-12 WO PCT/CH1996/000091 patent/WO1996028830A1/de not_active Ceased
- 1996-03-12 AT AT96905648T patent/ATE176547T1/de not_active IP Right Cessation
- 1996-03-12 AU AU49360/96A patent/AU4936096A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| AU4936096A (en) | 1996-10-02 |
| WO1996028830A1 (de) | 1996-09-19 |
| DE59601264D1 (de) | 1999-03-18 |
| EP0815567A1 (de) | 1998-01-07 |
| ATE176547T1 (de) | 1999-02-15 |
| CH690473A5 (de) | 2000-09-15 |
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