EP1928001A1 - Electrical transport conductor for overhead line - Google Patents
Electrical transport conductor for overhead line Download PDFInfo
- Publication number
- EP1928001A1 EP1928001A1 EP07121598A EP07121598A EP1928001A1 EP 1928001 A1 EP1928001 A1 EP 1928001A1 EP 07121598 A EP07121598 A EP 07121598A EP 07121598 A EP07121598 A EP 07121598A EP 1928001 A1 EP1928001 A1 EP 1928001A1
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- European Patent Office
- Prior art keywords
- conductor
- insulating material
- conductor according
- rod
- layer
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- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
- H01B3/427—Polyethers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
- H01B3/428—Polyacetals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/08—Several wires or the like stranded in the form of a rope
- H01B5/10—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material
- H01B5/102—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core
- H01B5/105—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core composed of synthetic filaments, e.g. glass-fibres
Definitions
- the invention relates to an electrical transport conductor for high voltage overhead line.
- a conductor comprising at least one central composite rod consisting of continuous fibers impregnated with a thermosetting resin matrix and around which are arranged conductive son of aluminum or aluminum alloy.
- the composite rod consists of organic or inorganic fibers, for example aramid, silicon carbide or carbon, impregnated with a synthetic resin, preferably an epoxy resin.
- a synthetic resin preferably an epoxy resin.
- This ring can be coated with a polyimide resin or wrapped with a polyimide film, forming an insulating layer.
- Aluminum conductor wires are wrapped around such a ring or a set of such rods to form an electrical transport conductor.
- the polyimide coating has the function of avoiding corrosion problems at the interface between the conductive wires and the rod comprising carbon fibers.
- part of the main stream is derived from the conductive layers of aluminum or aluminum alloy son through the capacity formed by the combination of these conductive son, the insulating layer and carbon fibers.
- a potential difference therefore appears at the terminals of this insulating layer.
- This difference in potential gives rise to a potentially unacceptable electric field for the insulating layer, whatever the nature of the matrix of thermosetting material, whatever the nature and the implementation of the insulating layer and whatever the number of layers of conductive wires.
- the electrical voltage induced in this insulating layer is a function of the length of the conductor, the intensity of the electric current conveyed and is independent of the voltage between phases.
- the invention proposes an electrical transport conductor in particular for overhead electrical lines and comprising at least one central composite rod consisting of continuous fibers impregnated with a thermosetting resin matrix, this rod being coated with at least one layer of insulating material and aluminum or aluminum alloy conductor wires being wound around this ring, characterized in that it comprises a device for short-circuiting said fibers and said conductive wires.
- said device is arranged at at least one end of the conductor.
- said short-circuiting device is made during the manufacture of anchor sleeves or during the manufacture of in-line junctions.
- anchoring sleeve By anchoring sleeve is understood the sleeve disposed on a pylon and supporting one end of the conductor.
- line junction By line junction is meant a terminal junction of conductors between two pylons.
- Said insulating material may be a polyether-ether-ketone.
- said insulating material is poly (oxy-1,4-phenyleneoxy-1,4-phenylene-carbonyl-1,4-phenylene).
- Said insulating material may consist of at least one tape placed on said rod.
- the nature of said insulating material is fiberglass.
- Said conductive son may be wound in at least one layer covering said rod coated with said insulating material.
- the conductor comprises a plurality of composite rods of which at least one is coated with a said layer of insulating material.
- the conductor may comprise a plurality of composite rods contained in a said layer of insulating material.
- Said conductive son diposées in layers may consist of round, trapezoidal son or Z.
- the shape of these conductive son may vary depending on the layer.
- the said fibers may be carbon.
- the figure 1 is a cross-sectional view of an electrical transport conductor according to the invention.
- FIGS. 2A to 2C illustrate a first embodiment of the invention.
- FIGS. 3A to 3C illustrate a second embodiment of the invention.
- an electrical transport conductor in particular for overhead power lines, whose operating temperature is greater than or equal to 200 ° C. It comprises at least one central composite rod 1 consisting of fibers, preferably continuous filaments of carbon fibers, impregnated with a matrix of thermosetting resin, preferably epoxy, this ring being coated with a layer of insulating material 2 and aluminum or aluminum alloy wire 3 being wound around this ring.
- the continuous fibers are impregnated with resin and then the rod formed is subjected to a heat treatment by continuous elevation of temperature.
- Such a ring of mechanical reinforcement has the advantage of having a low specific weight and to accept significant mechanical stresses.
- the number of composite rods used for a conductor is such that the latter passes an alternating bending test intended to demonstrate that the stresses present during unwinding under mechanical tension in the pulleys do not affect or degrade the performance of the driver.
- the conductor is tensioned at 15% of its rated breaking load.
- This driver is installed a carriage with three pulleys placed in a vertical plane and whose axes are placed in the same horizontal plane. The distance between the end pulleys is 3200 mm ⁇ 600 mm.
- the pulleys are of the same type as those used during the unwinding of conventional conductors on the overhead lines (bottom of throat trimmed with neoprene): Diameter of the pulley at the bottom of the groove (mm) Diameter of the conductor (mm) 800 ⁇ 38 1000 > 38
- the carriage makes three movements back and forth, at a horizontal speed ranging from 0.5 to 2 m / s over a length of between 50 and 60 m. Acceleration and braking are smooth.
- the driver and accessories assembly must hold at least 95% of the rated breaking load of the driver.
- three rods 1A, 1B, 1C are arranged centrally and are coated on the one hand with a layer of insulating material 2 and on the other hand each with another layer of insulating material 2A, 2B, 2C .
- Conductive son 3 of aluminum or aluminum alloy, here son trapezoidal, are wound in two layers on these rods.
- the insulating material of the layers 2 is compatible with the operating temperature greater than or equal to 200 ° C and is placed on the rod 1 without subsequent heating.
- this insulating material is extruded on the rod 1 and consists of a polyether-ether-ketone.
- this insulating material consists of at least one ribbon of glass fibers.
- the conductor comprises a device for short-circuiting carbon fibers and conducting wires in aluminum or aluminum alloy, which is disposed at least one end of the conductor.
- This short-circuiting device is made during the manufacture of anchor sleeves and or during the manufacture of in-line junctions.
- FIGS. 2A to 2C illustrate a first embodiment of the invention.
- FIGS. 3A to 3C illustrate a second embodiment of the invention.
- FIG. 3A On the figure 3A is shown a conductor as described above and the end of the rod 1 or rods 1A, 1B and 1C provided with their insulating layer is stripped and free of conductor son 3.
- This conductor end is intended to be connected to a sleeve M 'containing an electrical contact protection coating E.
- This sleeve M' also comprises a metal contact C.
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Non-Insulated Conductors (AREA)
- Insulated Conductors (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
- Communication Cables (AREA)
- Ropes Or Cables (AREA)
- Conductive Materials (AREA)
Abstract
Description
L'invention concerne un conducteur de transport électrique pour ligne aérienne en haute tension.The invention relates to an electrical transport conductor for high voltage overhead line.
Elle se rapporte plus précisément à un conducteur comportant au moins un jonc composite central constitué de fibres continues et imprégnées par une matrice de résine thermodurcissable et autour duquel sont disposés des fils conducteurs en aluminium ou en alliage d'aluminium.It relates more specifically to a conductor comprising at least one central composite rod consisting of continuous fibers impregnated with a thermosetting resin matrix and around which are arranged conductive son of aluminum or aluminum alloy.
Un tel conducteur est décrit dans le document de brevet
Selon ce document de l'art antérieur, le jonc composite est constitué de fibres organiques ou minérales, par exemple d'aramide, de carbure de silicium ou de carbone, imprégnées par une résine synthétique, de préférence une résine époxy. Ce jonc peut être revêtu d'une résine polyimide ou enrubannée d'un film polyimide, formant une couche isolante. Des fils conducteurs en aluminium sont enroulés autour d'un tel jonc ou d'un ensemble de tels joncs pour former un conducteur de transport électrique.According to this document of the prior art, the composite rod consists of organic or inorganic fibers, for example aramid, silicon carbide or carbon, impregnated with a synthetic resin, preferably an epoxy resin. This ring can be coated with a polyimide resin or wrapped with a polyimide film, forming an insulating layer. Aluminum conductor wires are wrapped around such a ring or a set of such rods to form an electrical transport conductor.
Le revêtement en polyimide a en particulier pour fonction d'éviter les problèmes de corrosion à l'interface entre les fils conducteurs et le jonc comportant des fibres de carbone.In particular, the polyimide coating has the function of avoiding corrosion problems at the interface between the conductive wires and the rod comprising carbon fibers.
Compte tenu de la résistivité non nulle des fibres de carbone, une partie du courant principal est dérivée des couches de fils conducteurs en aluminium ou alliage d'aluminium au travers de la capacité formée par l'association de ces fils conducteurs, de la couche isolante et des fibres de carbone. Une différence de potentiel apparaît donc aux bornes de cette couche isolante. Cette différence de potentiel donne naissance à un champ électrique potentiellement inadmissible pour la couche isolante, quelle que soit la nature de la matrice de matière thermodurcissable, quelle que soit la nature et la mise en oeuvre de la couche isolante et quel que soit le nombre de couches de fils conducteurs.Given the non-zero resistivity of the carbon fibers, part of the main stream is derived from the conductive layers of aluminum or aluminum alloy son through the capacity formed by the combination of these conductive son, the insulating layer and carbon fibers. A potential difference therefore appears at the terminals of this insulating layer. This difference in potential gives rise to a potentially unacceptable electric field for the insulating layer, whatever the nature of the matrix of thermosetting material, whatever the nature and the implementation of the insulating layer and whatever the number of layers of conductive wires.
Par calculs, il peut être constaté que la tension électrique induite dans cette couche isolante est fonction de la longueur du conducteur, de l'intensité du courant électrique véhiculé et est indépendante de la tension électrique entre phases.By calculation, it can be observed that the electrical voltage induced in this insulating layer is a function of the length of the conductor, the intensity of the electric current conveyed and is independent of the voltage between phases.
Ces conducteurs étant destinés à véhiculer un courant électrique d'intensité pouvant être égale à deux fois l'intensité correspondante d'un câble classique équivalent, la tension induite dans le revêtement isolant peut causer des dommages à celui-ci à court ou moyen terme.Since these conductors are intended to convey an electrical current of intensity that may be twice the corresponding intensity of a conventional equivalent cable, the voltage induced in the insulating coating may cause damage to it in the short or medium term.
Pour résoudre ce problème, l'invention propose un conducteur de transport électrique en particulier pour lignes électriques aériennes et comportant au moins un jonc composite central constitué de fibres continues imprégnées par une matrice de résine thermodurcissable, ce jonc étant revêtu d'au moins une couche de matière isolante et des fils conducteurs en aluminium ou en alliage d'aluminium étant enroulés autour de ce jonc, caractérisé en ce qu'il comporte un dispositif de mise en court-circuit des dites fibres et des dits fils conducteurs.To solve this problem, the invention proposes an electrical transport conductor in particular for overhead electrical lines and comprising at least one central composite rod consisting of continuous fibers impregnated with a thermosetting resin matrix, this rod being coated with at least one layer of insulating material and aluminum or aluminum alloy conductor wires being wound around this ring, characterized in that it comprises a device for short-circuiting said fibers and said conductive wires.
Selon un mode de réalisation préféré, ledit dispositif est disposé à au moins une extrémité du conducteur.According to a preferred embodiment, said device is arranged at at least one end of the conductor.
Et avantageusement, ledit dispositif de mise en court-circuit est réalisé lors de la confection de manchons d'ancrage ou lors de la confection de jonctions en ligne.And advantageously, said short-circuiting device is made during the manufacture of anchor sleeves or during the manufacture of in-line junctions.
Par manchon d'ancrage est entendu le manchon disposé sur un pylone et supportant une extrémité du conducteur. Par jonction de ligne est entendue une jonction d'extrémité de conducteurs entre deux pylones.By anchoring sleeve is understood the sleeve disposed on a pylon and supporting one end of the conductor. By line junction is meant a terminal junction of conductors between two pylons.
Ladite matière isolante peut être un poly-éther-éther-cétone.Said insulating material may be a polyether-ether-ketone.
Et de préférence, ladite matière isolante est du poly (oxy-1,4-phénylène-oxy-1,4-phénylène-carbonyle-1,4-phénylène).And preferably, said insulating material is poly (oxy-1,4-phenyleneoxy-1,4-phenylene-carbonyl-1,4-phenylene).
Ladite matière isolante peut être constituée d'au moins un ruban posé sur ledit jonc.Said insulating material may consist of at least one tape placed on said rod.
Et de préférence, la nature de ladite matière isolante est de la fibre de verre.And preferably, the nature of said insulating material is fiberglass.
Lesdits fils conducteurs peuvent être enroulés selon au moins une couche recouvrant ledit jonc revêtu de ladite matière isolante.Said conductive son may be wound in at least one layer covering said rod coated with said insulating material.
Et de préférence, le conducteur comporte plusieurs joncs composites dont au moins un est revêtu d'une dite couche de matière isolante.And preferably, the conductor comprises a plurality of composite rods of which at least one is coated with a said layer of insulating material.
Le conducteur peut comporter plusieurs joncs composites contenus dans une dite couche de matière isolante.The conductor may comprise a plurality of composite rods contained in a said layer of insulating material.
Lesdits fils conducteurs diposés en couches peuvent être constitués de fils de forme ronde, trapézoïdale ou Z. La forme de ces fils conducteurs peut varier en fonction de la couche.Said conductive son diposées in layers may consist of round, trapezoidal son or Z. The shape of these conductive son may vary depending on the layer.
Lesdites fibres peuvent être en carbone.The said fibers may be carbon.
L'invention est décrite ci-après plus en détail à l'aide de figures ne représentant que des modes de réalisation préférés de l'invention.The invention is described below in more detail with the aid of figures representing only preferred embodiments of the invention.
La
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Les
Dans le cas des conducteurs pour lignes aériennes, trois types de température sont à prendre en considération :
- la température maximale admise en régime permanent,
- la température maximale admise lors de surcharges de courtes, moyennes ou longues durées,
- la température maximale admise lors d'un court-circuit.
- the maximum permissible temperature in steady state,
- the maximum temperature allowed during overloads of short, medium or long duration,
- the maximum temperature allowed during a short circuit.
Ces conducteurs sont tels que la température maximale admise soit dans les trois cas précités supérieure ou égale à 200 °C, température dite plus loin température de fonctionnement.These conductors are such that the maximum permissible temperature is in the three aforementioned cases greater than or equal to 200 ° C, said temperature further operating temperature.
Sur la
Par un procédé de pultrusion, les fibres continues sont imprégnées de résine puis le jonc formé est soumis à un traitement thermique par élévation continue de température.By a pultrusion process, the continuous fibers are impregnated with resin and then the rod formed is subjected to a heat treatment by continuous elevation of temperature.
Un tel jonc de renforcement mécanique a pour avantage d'avoir un poids spécifique faible et d'accepter des contraintes mécaniques importantes.Such a ring of mechanical reinforcement has the advantage of having a low specific weight and to accept significant mechanical stresses.
Le jonc constitué d'une pluralité de filaments continus en fibres de carbone assemblés et imprégnées par une résine époxy est tel que :
- sa contrainte mécanique à la rupture est supérieure ou égale à 2,6 G Pa,
- son allongement à la rupture est supérieur à 2 %,
- son module d'élasticité est supérieur à 90 G Pa,
- son coefficient de dilatation linéaire est inférieur à 2 10-6 / °C,
- son poids spécifique est inférieur à 2 kg/dm3,
- son taux en poids de fibres de carbone est supérieur à 70 %,
- après vieillissement pendant 30 jours à la température de fonctionnement de 200 °C, sa contrainte mécanique à la rupture est supérieure ou égale à 2,6 G Pa et cela dans les deux cas suivants : jonc sous charge mécanique de 25 % de sa contrainte mécanique initiale et jonc sans charge mécanique,
- après enroulement de 180 ° sur un diamètre maximal de 120 fois le diamètre du jonc et ensuite soumis trois fois consécutivement à une charge mécanique de 25 % de sa charge de rupture initiale, le jonc présente une contrainte mécanique à la rupture supérieure ou égale à 2,6 G Pa.
- its mechanical stress at break is greater than or equal to 2.6 G Pa,
- its elongation at break is greater than 2%,
- its modulus of elasticity is greater than 90 G Pa,
- its linear expansion coefficient is less than 2 10 -6 / ° C,
- its specific weight is less than 2 kg / dm 3 ,
- its weight ratio of carbon fibers is greater than 70%,
- after aging for 30 days at the operating temperature of 200 ° C, its mechanical stress at break is greater than or equal to 2.6 G Pa and this in the following two cases: rod under mechanical load of 25% of its mechanical stress initial and ring without mechanical load,
- after winding 180 ° over a maximum diameter of 120 times the diameter of the rod and then subjected three times consecutively to a mechanical load of 25% of its initial breaking load, the rod has a mechanical stress at break greater than or equal to 2 , 6 G Pa.
Le nombre de joncs composites utilisé pour un conducteur est tel que celui-ci passe un essai de flexions alternées destiné à démontrer que les contraintes présentes lors d'un déroulage sous tension mécanique dans les poulies n'affectent pas ou ne dégrade pas les performances du conducteur.The number of composite rods used for a conductor is such that the latter passes an alternating bending test intended to demonstrate that the stresses present during unwinding under mechanical tension in the pulleys do not affect or degrade the performance of the driver.
Le conducteur est tendu à 15 % de sa charge de rupture nominale. On installe sur ce conducteur un chariot comportant trois poulies placées dans un plan vertical et dont les axes sont placés dans un même plan horizontal. L'entraxe entre les poulies extrêmes est de 3200 mm ± 600 mm.The conductor is tensioned at 15% of its rated breaking load. This driver is installed a carriage with three pulleys placed in a vertical plane and whose axes are placed in the same horizontal plane. The distance between the end pulleys is 3200 mm ± 600 mm.
Les poulies sont du même type que celles utilisées lors du déroulage des conducteurs classiques sur les lignes aériennes (fond de gorge garni de néoprène) :
Le chariot effectue trois mouvements de va et vient, à une vitesse horizontale allant de 0,5 à 2 m/s sur une longueur comprise entre 50 et 60 m. Les accélérations et les freinages se font sans à-coup.The carriage makes three movements back and forth, at a horizontal speed ranging from 0.5 to 2 m / s over a length of between 50 and 60 m. Acceleration and braking are smooth.
L'ensemble conducteur et accessoires doit tenir au moins 95 % de la charge de rupture nominale du conducteur.The driver and accessories assembly must hold at least 95% of the rated breaking load of the driver.
Selon l'exemple illustré, trois joncs 1A, 1B, 1C sont disposés centralement et sont revêtus d'une part d'une couche de matière isolante 2 et d'autre part chacun d'une autre couche de matière isolante 2A, 2B, 2C. Des fils conducteurs 3 en aluminium ou alliage d'aluminium, ici des fils de forme trapézoïdale, sont enroulés selon deux couches sur ces joncs.According to the illustrated example, three
Selon l'invention, la matière isolante des couches 2 est compatible avec la température de fonctionnement supérieure ou égale à 200°C et est mise en place sur le jonc 1 sans chauffage ultérieur.According to the invention, the insulating material of the
Selon un premier mode de réalisation, cette matière isolante est extrudée sur le jonc 1 et est constitué d'un poly-éther-éther-cétone.According to a first embodiment, this insulating material is extruded on the
De préférence, il est utilisé du poly (oxy-1,4-phénylène-oxy-1,4-phénylène-carbonyle-1,4-phénylène), commercialisé sous le nom Victrex PEEK.Preferably, poly (oxy-1,4-phenylene-oxy-1,4-phenylene-carbonyl-1,4-phenylene), marketed under the name Victrex PEEK, is used.
Selon un second mode de réalisation, cette matière isolante est constituée d'au moins un ruban de fibres de verre.According to a second embodiment, this insulating material consists of at least one ribbon of glass fibers.
Conformément à l'invention, le conducteur comporte un dispositif de mise en court-circuit des fibres de carbone et des fils conducteurs en aluminium ou alliage d'aluminium, qui est disposé à au moins une extréméité du conducteur.According to the invention, the conductor comprises a device for short-circuiting carbon fibers and conducting wires in aluminum or aluminum alloy, which is disposed at least one end of the conductor.
Ce dispositif de mise en court-circuit est réalisé lors de la confection de manchons d'ancrage et ou lors de la confection de jonctions en ligne.This short-circuiting device is made during the manufacture of anchor sleeves and or during the manufacture of in-line junctions.
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Claims (11)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0655250A FR2909481B1 (en) | 2006-12-01 | 2006-12-01 | ELECTRICAL TRANSPORT CONDUCTOR FOR AERIAL LINE |
Publications (2)
Publication Number | Publication Date |
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EP1928001A1 true EP1928001A1 (en) | 2008-06-04 |
EP1928001B1 EP1928001B1 (en) | 2009-09-16 |
Family
ID=38024171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07121598A Not-in-force EP1928001B1 (en) | 2006-12-01 | 2007-11-27 | Electrical transport conductor for overhead line |
Country Status (6)
Country | Link |
---|---|
US (1) | US7683262B2 (en) |
EP (1) | EP1928001B1 (en) |
AT (1) | ATE443335T1 (en) |
DE (1) | DE602007002461D1 (en) |
ES (1) | ES2333555T3 (en) |
FR (1) | FR2909481B1 (en) |
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- 2007-11-27 DE DE602007002461T patent/DE602007002461D1/en active Active
- 2007-11-27 EP EP07121598A patent/EP1928001B1/en not_active Not-in-force
- 2007-11-27 AT AT07121598T patent/ATE443335T1/en not_active IP Right Cessation
- 2007-11-27 ES ES07121598T patent/ES2333555T3/en active Active
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JPS62127812A (en) * | 1985-11-29 | 1987-06-10 | Fujikura Ltd | Optical fiber cable |
JPH03129606A (en) | 1989-07-27 | 1991-06-03 | Hitachi Cable Ltd | Aerial power cable |
EP1124235A2 (en) * | 2000-02-08 | 2001-08-16 | William Brandt Goldsworthy | Composite reinforced electrical transmission conductor |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20101355A1 (en) * | 2010-07-22 | 2012-01-23 | Tratos Cavi S P A | "ROPE FOR HIGH-VOLTAGE AIR LINES WITH HIGH THERMAL LIMIT AND 3 CARRIERS" |
EP2410534A1 (en) * | 2010-07-22 | 2012-01-25 | Tratos Cavi S.p.A. | Cord for high voltage overhead electrical lines, with high thermal limit and with 3 load-bearing cables |
WO2022229562A1 (en) * | 2021-04-29 | 2022-11-03 | Epsilon Composite | Method for discriminant monitoring of a composite multi-material assembly |
FR3122498A1 (en) * | 2021-04-29 | 2022-11-04 | Epsilon Composite | DISCRIMINANT CONTROL METHOD OF A MULTI-MATERIAL COMPOSITE ASSEMBLY |
Also Published As
Publication number | Publication date |
---|---|
ATE443335T1 (en) | 2009-10-15 |
US7683262B2 (en) | 2010-03-23 |
DE602007002461D1 (en) | 2009-10-29 |
EP1928001B1 (en) | 2009-09-16 |
FR2909481B1 (en) | 2009-01-23 |
US20080128155A1 (en) | 2008-06-05 |
ES2333555T3 (en) | 2010-02-23 |
FR2909481A1 (en) | 2008-06-06 |
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