EP0949636A1 - Conducteur multicouche à effet de peau réduit - Google Patents
Conducteur multicouche à effet de peau réduit Download PDFInfo
- Publication number
- EP0949636A1 EP0949636A1 EP99400692A EP99400692A EP0949636A1 EP 0949636 A1 EP0949636 A1 EP 0949636A1 EP 99400692 A EP99400692 A EP 99400692A EP 99400692 A EP99400692 A EP 99400692A EP 0949636 A1 EP0949636 A1 EP 0949636A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conductor
- conductive wires
- layers
- wires
- insulating tapes
- 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
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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
- H01B7/30—Insulated conductors or cables characterised by their form with arrangements for reducing conductor losses when carrying alternating current, e.g. due to skin effect
- H01B7/303—Conductors comprising interwire insulation
Definitions
- the present invention relates to a multilayer conductor with skin effect reduced, for power cable, this conductor comprising several layers of wires superimposed conductors and insulating tapes arranged between the different layers of wires.
- the conductor is segmented and includes six sector-shaped segments which are juxtaposed. Each segment has several layers of conductive wires, which are bare conductive wires and whose layers are then separated by insulation between two superimposed layers, or all of which can be enamelled for wire-to-wire and layer-to-layer insulation resulting.
- the insulation is advantageously constituted by a cellulose paper tape, to satisfy the requirements of high resistance mechanical, high resistance to swelling or solubility, high stability thermal and easy splicing of the conductor and low cost, required for this isolation.
- the cellulose paper strip allows in particular a splicing or termination of the conductor by compression without it being necessary remove the inter-layer insulating tapes over a certain length beforehand, due to their rupture by compression of the conductor.
- the debris from the insulating tapes which results from their compression, may cause changes in electrical characteristics expected at the splicing or termination level.
- this driver does not allow the use of other methods splicing or termination, in particular a welding method such as that known under the Cadwell process, often preferred but requiring by against first removing the inter-layer insulating tape on a certain length at the end of the conductor for correct welding.
- a welding method such as that known under the Cadwell process
- Such preliminary operation is long and delicate, especially in the case of segmented conductors with large cross-sections. Indeed, it requires to flourish the conductor to access and cut the insulating tapes, then to reconstitute the conductor ensuring that the layers of the reconstituted conductor are well concentric.
- the object of the present invention is to avoid the drawbacks of such a known multilayer conductor.
- a multilayer conductor with reduced skin effect, for power cable comprising several layers of conducting wires superimposed one on the other and insulating tapes between said layers of conductive wires, characterized in that said insulating tapes are laid lengthwise and contain a substantially uniform elongation preload over the length of the driver.
- Figures 1 and 2 show a multilayer conductor 1 and a segment 2 of multi-segment and multi-layer conductors, respectively, which comprise several layers of conductive wires 3 and insulating tapes 4 each separating one of the layers of son of another superimposed on the previous one.
- the layers of superimposed conductive wires are sectoral.
- the layers of superimposed conductive wires are concentric.
- Figure 3 schematically illustrates the conductor aforementioned multilayer or the aforementioned segment, in accordance with the present invention. Bare conductive wires and insulating tapes have been designated under the same references 3 and 4 as in Figures 1 and 2.
- the insulating tapes 4 between the different layers of wires nudes 3 contain an elongation preload, which is substantially homogeneous over the entire length of the conductor or segment concerned.
- Each of these ribbons is laid lengthwise on the layer of son that it covers. Its prestress elongation is given by the material of the ribbon chosen in material heat-shrinkable and laid stretched or is given by the material of the tape chosen in elastic material and placed under controlled mechanical tension.
- the multilayer segment illustrated in FIG. 4 is an embodiment optimized. It has conductive wires, which are wired in sector layers superimposed and are alternately naked and then designated under the reference 3 above and enamelled and then designated under the reference 6 in each of layers, and 4 insulating tapes between the different layers, which are retractable like the insulating tapes 4 in FIG. 3.
- the bare wires 3 and the wires enamelled 4 were simply distinguished from each other by the hatching in one direction for the former and hatching in another direction for the other.
- the bare wires 3 and the wires 4 before enameling are wires identical, of the same diameter.
- the enamel covering the wires 4 increases only very little the diameter of these.
- the section differences between bare wires 3 and enamelled wires 4 are absorbed in the wiring of the layers of wires.
- the wiring of the layers of wires is done helically, alternately left and right.
- the alternation of naked sons and enamelled avoids metal to metal contact between wires of the same layer, while the insulating tape 4 avoids metal-to-metal contact between wires of adjacent layers superimposed. It follows that the resulting multilayer conductor is of realization optimized to also present a reduced proximity effect.
- the multilayer conductor segmented comprises an intermediate ribbon, disposed between two adjacent segments.
- This intermediate tape can be a retractable insulating tape like the tapes 4 between layers.
- it may be a conventional insulating tape, that is to say not shrink, in particular in paper, the removal of which over a certain length at the end of the conductor then poses no particular problem due to a slight natural development or easy to obtain terminal portions of segments.
- this intermediate strip may be a semiconductor strip.
- the multi-layer conductor, segmented or not, produced in accordance with the invention is itself coated with a semiconductor layer preferably helically banded on the peripheral layer of the conductor, for making an energy cable comprising this conductor.
Landscapes
- Insulated Conductors (AREA)
Abstract
Description
- lesdits rubans isolants sont en matériau élastique et posés sous tension chacun sur la couche de fils conducteurs recouverte par celui-ci,
- lesdits rubans isolants sont en matériau thermorétractable et posés tendus chacun sur la couche de fils conducteurs recouverte par celui-ci,
- le conducteur comporte plusieurs segments multicouches ayant une forme de secteur et juxtaposés les uns aux autres, lesdits fils conducteurs étant agencés en couches sectorielles superposées et séparées par lesdits rubans isolants dans chaque segment,
- lesdits fils conducteurs sont alternativement des fils conducteurs nus et des fils conducteurs émaillés dans chacune desdites couches.
- Les figures 1 et 2 sont deux vues en coupe transversale d'un conducteur multicouche et d'un segment de conducteur multicouche, respectivement, du type de ceux visés par la présente invention,
- La figure 3 est une représentation schématique longitudinale d'un conducteur ou d'un segment de conducteur de structure conforme à celui de la figure 1 ou 2 mais de réalisation adaptée selon la présente invention,
- La figure 4 est une vue en coupe d'un mode de réalisation optimisée d'un segment de conducteur selon l'invention.
Claims (6)
- Conducteur multicouche à effet de peau réduit, pour câble d'énergie, comportant plusieurs couches de fils conducteurs superposées les unes sur les autres et des rubans isolants entre lesdites couches de fils conducteurs, caractérisé en ce que lesdits rubans isolants (4) sont posés en long et contiennent une précontrainte d'allongement sensiblement homogène sur la longueur du conducteur.
- Conducteur selon la revendication 1, caractérisé en ce que lesdits rubans isolants (4) sont en matériau élastique et posés sous tension chacun sur la couche de fils conducteurs (3, 6) recouverte par celui-ci.
- Conducteur selon la revendication 1, caractérisé en ce que lesdits rubans isolants (4) sont en matériau thermorétractable et posés tendus chacun sur la couche de fils conducteurs (3, 6) recouverte par celui-ci.
- Conducteur selon l'une des revendications 1 à 3, caractérisé en ce qu'il comporte plusieurs segments multicouches (2) ayant une forme de secteur et juxtaposés les uns aux autres, lesdits fils conducteurs (3, 6) étant agencés en couches sectorielles superposées et séparées par lesdits rubans isolants (4), dans chaque segment.
- Conducteur selon l'une des revendications 1 à 4, caractérisé en ce que lesdits fils conducteurs sont alternativement des fils conducteurs nus (3) et des fils conducteurs émaillés (6), dans chacune desdites couches.
- Conducteur selon la revendication 5, caractérisé en ce que lesdits fils conducteurs (3, 6) sont sensiblement de même diamètre.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9804431 | 1998-04-09 | ||
FR9804431A FR2777383B1 (fr) | 1998-04-09 | 1998-04-09 | Conducteur multicouche a effet de peau reduit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0949636A1 true EP0949636A1 (fr) | 1999-10-13 |
EP0949636B1 EP0949636B1 (fr) | 2003-12-17 |
Family
ID=9525046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19990400692 Expired - Lifetime EP0949636B1 (fr) | 1998-04-09 | 1999-03-22 | Conducteur multicouche à effet de peau réduit |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0949636B1 (fr) |
FR (1) | FR2777383B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008031337B3 (de) * | 2008-07-02 | 2010-04-01 | Nkt Cables Gmbh | Elektrisches Sekorleiterlabel vom Millikentyp |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008045553A1 (de) | 2008-09-03 | 2010-03-04 | Dürr Systems GmbH | Lackiereinrichtung und zugehöriges Verfahren |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB724337A (en) * | 1952-04-14 | 1955-02-16 | Sumitomo Electric Industries | High frequency electric conductor |
DE19520587A1 (de) * | 1995-06-06 | 1996-12-12 | Siemens Ag | Wechselstromkabel mit zwei konzentrischen Leiteranordnungen aus verseilten Einzelleitern |
-
1998
- 1998-04-09 FR FR9804431A patent/FR2777383B1/fr not_active Expired - Fee Related
-
1999
- 1999-03-22 EP EP19990400692 patent/EP0949636B1/fr not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB724337A (en) * | 1952-04-14 | 1955-02-16 | Sumitomo Electric Industries | High frequency electric conductor |
DE19520587A1 (de) * | 1995-06-06 | 1996-12-12 | Siemens Ag | Wechselstromkabel mit zwei konzentrischen Leiteranordnungen aus verseilten Einzelleitern |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008031337B3 (de) * | 2008-07-02 | 2010-04-01 | Nkt Cables Gmbh | Elektrisches Sekorleiterlabel vom Millikentyp |
Also Published As
Publication number | Publication date |
---|---|
FR2777383B1 (fr) | 2000-05-12 |
FR2777383A1 (fr) | 1999-10-15 |
EP0949636B1 (fr) | 2003-12-17 |
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