EP0406099A1 - Alternating current power line insulator with a protective spark arrester - Google Patents

Alternating current power line insulator with a protective spark arrester Download PDF

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Publication number
EP0406099A1
EP0406099A1 EP90401827A EP90401827A EP0406099A1 EP 0406099 A1 EP0406099 A1 EP 0406099A1 EP 90401827 A EP90401827 A EP 90401827A EP 90401827 A EP90401827 A EP 90401827A EP 0406099 A1 EP0406099 A1 EP 0406099A1
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EP
European Patent Office
Prior art keywords
insulator
horns
fittings
alternating current
power line
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
EP90401827A
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German (de)
French (fr)
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EP0406099B1 (en
Inventor
René Joulié
René Parraud
Maurice Soucille
Guy Thévenet
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Societe Europeenne dIsolateurs en Verre et Composite SEDIVER SA
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Societe Europeenne dIsolateurs en Verre et Composite SEDIVER SA
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Priority to AT90401827T priority Critical patent/ATE103411T1/en
Publication of EP0406099A1 publication Critical patent/EP0406099A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
    • H01B17/46—Means for providing an external arc-discharge path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/16—Series resistor structurally associated with spark gap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
    • H01T4/14—Arcing horns

Definitions

  • the present invention relates to an alternating current line insulator provided with a protective spark gap, this insulator being able to be an insulator made of tempered glass, ceramic or a composite insulator.
  • the field of application concerned is for example that of medium voltage AC networks.
  • a protective spark gap is generally associated with a chain of insulators composed of one or more elements to protect downstream equipment in the event of bypass.
  • the two ends of the insulator are equipped with a horn by means of an adjustable fixing, so that the distance between the two horns can be perfectly adjusted according to the nominal voltage of the network.
  • Such a spark gap is simple, robust, easy to maintain. Its level of protection from transformers and aero-underground lifts is considered sufficient in most cases. It fully regenerates the isolation after bypass. However, it has drawbacks. First of all, it is subject to untimely tripping caused by the presence of snow, branches or birds which short-circuit the horns. In addition, in the event of ignition, the current on is rarely cut while the arc lengthens going up between the horns. This follow-on current causes a potential rise in the earth connection, the opening of the source station's circuit breakers and the creation of a micro-interruption on the network.
  • the object of the present invention is to modify the insulator to avoid this drawback, this modification having to be as economical as possible and able to also be adapted to insulators already mounted in line and under voltage.
  • the subject of the present invention is an alternating current line isolator provided with a protective spark gap formed by two horns fixed by adjustable supports at the ends of said isolator, so that the spacing between these horns is well determined, characterized by the fact that between the end of said insulator intended to be connected to earth and the support of the corresponding horn is interposed a device for switching off the current on composite comprising one or more several pellets, made of a varistor-type material, such as zinc oxide, two end fittings, means for ensuring the electrical connection between the two fittings and an envelope formed by a filament winding made of glass fibers impregnated with resin, the assembly being provided with a finned coating of injected elastomer.
  • the lateral surface of the pellets has areas not covered with fibers, these areas forming cells partially filled with resin.
  • FIG. 1 a chain of insulators 1 consisting of two insulators 2 and 3.
  • the cover 13 and the rod 14 are provided with supports 4 and 5 for two horns 6 and 7.
  • Perforated portions 8 and 9 of these horns associated with fasteners 10 make it possible to adjust their spacing.
  • An anti-bird device 11, fixed to the cover 12, is provided between the two horns 6 and 7.
  • a follow-up current cut-off device 30, similar to the device 20, is more clearly visible in FIG. 3.
  • This device 30 comprises, between its two fittings 23 and 24, two pellets 31 and 32 of zinc oxide, metallized along their flat faces 33.
  • a stack having a common axis 35 is produced by interposing between the pellets 31 and 32 a tubular spacer 36, which may be metallic or insulating, it has an internal housing 37, like the fittings 23 and 24.
  • This whole assembly is provided with an envelope 40 based on filament winding and defining ribbons 41 forming a lattice leaving free of the alveolar zones 42.
  • the fibers are impregnated with resin and the zones 42 contain resin.
  • the angle of the winding with respect to the axis 35 is between 30 ° and 60 °.
  • the percentage of surface represented by the zones 42 with respect to the entire surface of the stack is approximately 25%. It can vary between 15% and 35%.
  • the envelope formed is perfectly adherent to the lateral surfaces of the fittings 23 and 24, of the spacer 36 and of the pads 31 and 32.
  • a finned coating 50 is then injected of elastomer, for example EPDM, silicone or other insulating material, in order to ensure complete sealing of the device 30.
  • FIG. 4 shows the shape of the voltage curves U as a function of the current I for a horn spark gap of the prior art (curve A) and for a horn spark gap associated with a device according to the invention (curve B) .
  • the horn spark gap 6, 7 starts (as in curve A), then this voltage is transferred to the device 20 which becomes on and cuts the current immediately in less than a quarter of a period (curve B). For example, it admits a large amplitude overcurrent, such as a 65 kA wave of 0.4 microsecond duration.
  • Comparative tests were carried out between the two insulators of FIGS. 1 and 2, both subjected to a voltage of 13.9 kV and to a short-circuit current of 8 kA, obtained by short-circuiting the two horns by a silver wire.
  • the circuit breaker of the apparatus has been tripped.
  • the follow-on current was removed in less than a quarter of a period.
  • the immediate current cutoff device has many advantages. It holds the line tension, even in pollution conditions, when all the line tension is applied to it as a result of accidental shunting of the horns due to birds, branches, snow, etc.
  • removing the follow-on current avoids: - the opening of the source station circuit breakers and their wear, - micro-cuts which disrupt the quality of service, - the potential surges of the earth electrode prejudicial to medium voltage, low voltage equipment and to the telephone.
  • the isolator according to the invention with its immediate current cut-off device is simpler to implement and more economical than an isolator associated with a surge arrester.
  • the immediate current cut-off device is almost always de-energized during operation. No aging of zinc oxide pellets is to be feared under the effect of the network voltage.
  • the horn spark gap retains the insulation in the event of a hypothetical breakdown of the current cut-off device.
  • the invention is not limited to the embodiment which has just been described.
  • the insulator can be a composite insulator or be formed from a chain of ceramic dielectric insulators.
  • the immediate current cut-off device may comprise a single tablet or more than two stacked tablets.
  • the illustrated winding mode can be replaced by any other arrangement, in particular a winding without cells.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Communication Cables (AREA)
  • Cable Accessories (AREA)
  • Thermistors And Varistors (AREA)

Abstract

Alternating current power line insulator with a protective spark arrester formed from two horns fixed by means of adjustable supports in such a way that the spacing between these horns is well defined, characterised by the fact that between the end (13) of the said insulator (1) intended to be connected to earth and the support for the corresponding horn (7) is interposed a composite follow-current interrupting device (20) comprising, between two metal end-fittings (23, 24), at least one thyristor, the assembly being provided with a casing and a synthetic covering. <IMAGE>

Description

La présente invention concerne un isolateur de ligne à courant alternatif muni d'un éclateur de protection, cet isolateur pouvant être un isolateur en verre trempé, en céramique ou un isolateur composite.The present invention relates to an alternating current line insulator provided with a protective spark gap, this insulator being able to be an insulator made of tempered glass, ceramic or a composite insulator.

Le domaine d'application concerné est par exemple celui des réseaux moyenne tension à courant alternatif.The field of application concerned is for example that of medium voltage AC networks.

Un éclateur de protection est généralement associé à une chaîne d'isolateurs composée d'un ou plusieurs éléments pour protéger un appareillage en aval en cas de contournement. Les deux extrémités de l'isolateur sont équipées d'une corne par l'intermédiaire d'une fixation réglable, de manière que l'écartement entre les deux cornes puisse être parfaitement ajusté en fonction de la tension nominale du réseau.A protective spark gap is generally associated with a chain of insulators composed of one or more elements to protect downstream equipment in the event of bypass. The two ends of the insulator are equipped with a horn by means of an adjustable fixing, so that the distance between the two horns can be perfectly adjusted according to the nominal voltage of the network.

Un tel éclateur est simple, robuste, facile d'entretien. Son niveau de protection des transformateurs et des remontées aéro-souterraines est jugé suffisant dans la plupart des cas. Il régénère intégralement l'isolement après le contournement.
Il présente toutefois des inconvénients. Tout d'abord il est soumis à des déclenchements intempestifs provoqués par la présence de neige, de branches ou d'oiseaux qui court-circuitent les cornes. Par ailleurs, en cas d'amorçage, le courant de suite est rarement coupé alors que l'arc s'allonge en remontant entre les cornes. Ce courant de suite provoque une montée de potentiel de la prise de terre, l'ouverture des disjoncteurs du poste source et la création d'une microcoupure sur le réseau.Such a spark gap is simple, robust, easy to maintain. Its level of protection from transformers and aero-underground lifts is considered sufficient in most cases. It fully regenerates the isolation after bypass.
However, it has drawbacks. First of all, it is subject to untimely tripping caused by the presence of snow, branches or birds which short-circuit the horns. In addition, in the event of ignition, the current on is rarely cut while the arc lengthens going up between the horns. This follow-on current causes a potential rise in the earth connection, the opening of the source station's circuit breakers and the creation of a micro-interruption on the network.

La présente invention a pour but de modifier l'isolateur pour éviter cet inconvénient, cette modification devant être la plus économique possible et pouvoir s'adapter également sur des isolateurs déjà montés en ligne et sous tension.The object of the present invention is to modify the insulator to avoid this drawback, this modification having to be as economical as possible and able to also be adapted to insulators already mounted in line and under voltage.

La présente invention a pour objet un isolateur de ligne à courant alternatif muni d'un éclateur de protection formé de deux cornes fixées par des supports réglables aux extrémités dudit isolateur, de manière que l'écartement entre ces cornes soit bien déterminé, caractérisé par le fait qu'entre l'extrémité dudit isolateur destinée à être reliée à la terre et le support de la corne correspondante est interposé un dispositif de coupure de courant de suite composite comportant une ou plusieurs pastilles, en un matériau de type varistance, tel que l'oxyde de zinc, deux ferrures d'extrémités, des moyens pour assurer la liaison électrique entre les deux ferrures et une enveloppe formée d'un enroulement filamentaire en fibres de verre imprégnées de résine, l'ensemble étant muni d'un revêtement à ailettes en élastomère injecté. De préférence, la surface latérale des pastilles présente des zones non recouvertes de fibres, ces zones formant des alvéoles partiellement remplis de résine.The subject of the present invention is an alternating current line isolator provided with a protective spark gap formed by two horns fixed by adjustable supports at the ends of said isolator, so that the spacing between these horns is well determined, characterized by the fact that between the end of said insulator intended to be connected to earth and the support of the corresponding horn is interposed a device for switching off the current on composite comprising one or more several pellets, made of a varistor-type material, such as zinc oxide, two end fittings, means for ensuring the electrical connection between the two fittings and an envelope formed by a filament winding made of glass fibers impregnated with resin, the assembly being provided with a finned coating of injected elastomer. Preferably, the lateral surface of the pellets has areas not covered with fibers, these areas forming cells partially filled with resin.

La structure d'un tel dispositif de coupure de courant de suite présente des analogies avec celle des parafoudres décrits dans les demandes de brevets européens publiés sous les numéros 0 274 674, 0 281 945, 0 304 690. Mais il faut remarquer que, contrairement au parafoudre qui est connecté aux bornes du réseau, le dispositif de coupure de courant de suite est hors tension ; il n'agit qu'en cas de surtensions temporaires : c'est pourquoi il est pratiquement insensible au vieillissement qui serait dû à l'application de contraintes électriques permanentes.The structure of such a current cut-off device has analogies with that of the surge arresters described in the European patent applications published under the numbers 0 274 674, 0 281 945, 0 304 690. But it should be noted that, unlike to the surge arrester which is connected to the terminals of the network, the immediate current cut-off device is de-energized; it only acts in the event of temporary overvoltages: this is why it is practically insensitive to aging which would be due to the application of permanent electrical stresses.

D'autres caractéristiques et avantages de la présente invention apparaîtront au cours de la description suivante d'un mode de réalisation donné à titre illustratif mais nullement limitatif.Other characteristics and advantages of the present invention will appear during the following description of an embodiment given by way of illustration but in no way limitative.

Dans le dessin annexé :

  • - La figure 1 est une vue schématique d'un isolateur de ligne à courant alternatif muni d'un éclateur de protection selon l'art antérieur.
  • - La figure 2 est une vue schématique d'un isolateur de suspension muni d'un éclateur de protection et d'un dispositif de coupure de courant de suite composite selon l'invention.
  • - La figure 3 est une vue schématique en coupe partielle d'un dispositif de coupure de courant de suite composite, analogue à celui de la figure 2.
  • - La figure 4 montre l'allure des courbes V = f(I) pour les dispositifs apparaissant dans les figures 1 et 2.
In the attached drawing:
  • - Figure 1 is a schematic view of an AC line isolator provided with a protective spark gap according to the prior art.
  • - Figure 2 is a schematic view of a suspension isolator provided with a protective spark gap and a device for switching the current on composite according to the invention.
  • FIG. 3 is a diagrammatic view in partial section of a device for switching off current from a composite sequence, similar to that of FIG. 2.
  • - Figure 4 shows the shape of the curves V = f (I) for the devices appearing in Figures 1 and 2.

On voit dans la figure 1 une chaîne d'isolateurs 1 constituée de deux isolateurs 2 et 3. On a référencé 12 et 13 les capots de ces isolateurs, et 14 la tige de l'isolateur 12 destinée à supporter une pince tenant un câble ; le capot 13 est destiné à être connecté à la terre. Le capot 13 et la tige 14 sont munis de supports 4 et 5 pour deux cornes 6 et 7. Des portions ajourées 8 et 9 de ces cornes associées à des fixations 10 permettent d'effectuer un réglage de leur écartement. Un dispositif anti-oiseaux 11, fixé sur le capot 12, est prévu entre les deux cornes 6 et 7.We see in Figure 1 a chain of insulators 1 consisting of two insulators 2 and 3. There are referenced 12 and 13 the covers of these insulators, and 14 the rod of the insulator 12 for supporting a clamp holding a cable; the cover 13 is intended to be connected to the Earth. The cover 13 and the rod 14 are provided with supports 4 and 5 for two horns 6 and 7. Perforated portions 8 and 9 of these horns associated with fasteners 10 make it possible to adjust their spacing. An anti-bird device 11, fixed to the cover 12, is provided between the two horns 6 and 7.

On retrouve dans la figure 2 les mêmes éléments que dans la figure 1 repérés par les mêmes références. Le support 5 n'apparaît pas dans cette figure 2. Par contre entre la partie 9 de la corne 7 et le capot 13 est fixé, par l'intermédiaire de deux barres 21 et 22, un dispositif de coupure de courant de suite 20 au niveau de ses ferrures d'extrémités 23 et 24.We find in Figure 2 the same elements as in Figure 1 identified by the same references. The support 5 does not appear in this figure 2. On the other hand, between the part 9 of the horn 7 and the cover 13 is fixed, by means of two bars 21 and 22, a current cut-off device 20 to the level of its end fittings 23 and 24.

Un dispositif de coupure de courant de suite 30, analogue au dispositif 20, est visible plus clairement dans la figure 3.A follow-up current cut-off device 30, similar to the device 20, is more clearly visible in FIG. 3.

Ce dispositif 30 comprend, entre ses deux ferrures 23 et 24, deux pastilles 31 et 32 en oxyde de zinc, métallisées suivant leurs faces planes 33. On réalise un empilement ayant un axe commun 35 en interposant entre les pastilles 31 et 32 une entretoise tubulaire 36, qui peut être métallique ou isolante elle présente un logement interne 37, comme les ferrures 23 et 24.This device 30 comprises, between its two fittings 23 and 24, two pellets 31 and 32 of zinc oxide, metallized along their flat faces 33. A stack having a common axis 35 is produced by interposing between the pellets 31 and 32 a tubular spacer 36, which may be metallic or insulating, it has an internal housing 37, like the fittings 23 and 24.

Afin d'assurer la continuité électrique, on dispose dans les logements 37 des lamelles métalliques 38, en contact avec les faces métallisées 33 des pastilles, et des ressorts 39 de faible pression.In order to ensure electrical continuity, there are in the housings 37 metal strips 38, in contact with the metallized faces 33 of the pads, and springs 39 of low pressure.

Tout cet ensemble est muni d'une enveloppe 40 à base d'enroulement filamentaire et définissant des rubans 41 formant un treillis laissant libres des zones alvéolaires 42.
Les fibres sont imprégnées de résine et les zones 42 contiennent de la résine. L'angle du bobinage par rapport à l'axe 35 est compris entre 30° et 60°. Le pourcentage de surface représentée par les zones 42 par rapport à l'ensemble de la surface de l'empilement est de 25 % environ. Il peut varier entre 15 % et 35 %. Après polymérisation de la résine, l'enveloppe formée est parfaitement adhérente aux surfaces latérales des ferrures 23 et 24, de l'entretoise 36 et des pastilles 31 et 32. On injecte ensuite un revêtement à ailettes 50 en élastomère, par exemple en EPDM, silicone ou autre matériau isolant, afin d'assurer l'étanchéité complète du dispositif 30.This whole assembly is provided with an envelope 40 based on filament winding and defining ribbons 41 forming a lattice leaving free of the alveolar zones 42.
The fibers are impregnated with resin and the zones 42 contain resin. The angle of the winding with respect to the axis 35 is between 30 ° and 60 °. The percentage of surface represented by the zones 42 with respect to the entire surface of the stack is approximately 25%. It can vary between 15% and 35%. After polymerization of the resin, the envelope formed is perfectly adherent to the lateral surfaces of the fittings 23 and 24, of the spacer 36 and of the pads 31 and 32. A finned coating 50 is then injected of elastomer, for example EPDM, silicone or other insulating material, in order to ensure complete sealing of the device 30.

On voit dans la figure 4 l'allure des courbes tension U en fonction du courant I pour un éclateur à cornes de l'art antérieur (courbe A) et pour un éclateur à cornes associé à un dispositif selon l'invention (courbe B).
En cas de surtension, l'éclateur à cornes 6, 7 s'amorce (comme dans la courbe A), puis cette tension est reportée sur le dispositif 20 qui devient passant et coupe le courant de suite en moins d'un quart de période (courbe B). Par exemple il admet une surintensité de grande amplitude, telle qu'une onde de 65 kA de durée 0,4 microseconde.FIG. 4 shows the shape of the voltage curves U as a function of the current I for a horn spark gap of the prior art (curve A) and for a horn spark gap associated with a device according to the invention (curve B) .
In the event of an overvoltage, the horn spark gap 6, 7 starts (as in curve A), then this voltage is transferred to the device 20 which becomes on and cuts the current immediately in less than a quarter of a period (curve B). For example, it admits a large amplitude overcurrent, such as a 65 kA wave of 0.4 microsecond duration.

On a effectué des essais comparatifs entre les deux isolateurs des figures 1 et 2, soumis tous les deux à une tension de 13,9 kV et à un courant de court-circuit de 8 kA, obtenu par court-circuit des deux cornes par un fil d'argent.
Dans le cas de l'isolateur de la figure 1, le disjoncteur de l'appareillage a été déclenché.
Dans le cas de l'isolateur de la figure 2, le courant de suite a été supprimé en moins d'un quart de période.Comparative tests were carried out between the two insulators of FIGS. 1 and 2, both subjected to a voltage of 13.9 kV and to a short-circuit current of 8 kA, obtained by short-circuiting the two horns by a silver wire.
In the case of the insulator in FIG. 1, the circuit breaker of the apparatus has been tripped.
In the case of the insulator in Figure 2, the follow-on current was removed in less than a quarter of a period.

Le dispositif de coupure de courant de suite selon l' invention présente de nombreux avantages.
Il tient la tension de la ligne, même dans des conditions de pollution, lorsque toute la tension de la ligne lui est appliquée par suite d'un shuntage accidentel des cornes dû aux oiseaux, aux branches, à la neige etc...The immediate current cutoff device according to the invention has many advantages.
It holds the line tension, even in pollution conditions, when all the line tension is applied to it as a result of accidental shunting of the horns due to birds, branches, snow, etc.

Par ailleurs, la suppression du courant de suite permet d'éviter :
- l'ouverture des disjoncteurs du poste source et leur usure,
- les microcoupures qui perturbent la qualité du service,
- les montées de potentiel de la prise de terre préjudiciables aux appareillages moyenne tension, basse tension, et au téléphone.Furthermore, removing the follow-on current avoids:
- the opening of the source station circuit breakers and their wear,
- micro-cuts which disrupt the quality of service,
- the potential surges of the earth electrode prejudicial to medium voltage, low voltage equipment and to the telephone.

L'isolateur selon l'invention avec son dispositif de coupure de courant de suite est plus simple à mettre en oeuvre et plus économique qu'un isolateur associé à un parafoudre.The isolator according to the invention with its immediate current cut-off device is simpler to implement and more economical than an isolator associated with a surge arrester.

Il est aisé de transformer un isolateur de l'art antérieur déjà installé (figure 1) en un isolateur selon l'invention (figure 2). Il suffit de démonter un seul boulon pour enlever la corne existante, et de serrer deux boulons pour assurer le montage du dispositif 20. Cette opération peut être faite hors tension et sous tension très facilement.It is easy to transform an insulator of the prior art already installed (Figure 1) into an insulator according to the invention (Figure 2). It is enough to disassemble a single bolt to remove the existing horn, and to tighten two bolts to ensure the mounting of the device 20. This operation can be done off and on very easily.

Le dispositif de coupure de courant de suite est pratiquement toujours hors tension en service. Aucun vieillissement des pastilles à l'oxyde de zinc n'est à craindre sous l'effet de la tension du réseau. L'éclateur à cornes conserve l'isolement en cas d'une hypothétique avarie du dispositif de coupure de courant de suite.The immediate current cut-off device is almost always de-energized during operation. No aging of zinc oxide pellets is to be feared under the effect of the network voltage. The horn spark gap retains the insulation in the event of a hypothetical breakdown of the current cut-off device.

Bien entendu l'invention n'est pas limitée au mode de réalisation qui vient d'être décrit. En particulier, l'isolateur peut être un isolateur composite ou être formé d'une chaîne d'isolateurs à diélectriques en céramique. Le dispositif de coupure de courant de suite peut comporter une seule pastille ou plus de deux pastilles empilées. Le mode de bobinage illustré peut être remplacé par toute autre disposition, notamment un bobinage sans alvéoles.Of course, the invention is not limited to the embodiment which has just been described. In particular, the insulator can be a composite insulator or be formed from a chain of ceramic dielectric insulators. The immediate current cut-off device may comprise a single tablet or more than two stacked tablets. The illustrated winding mode can be replaced by any other arrangement, in particular a winding without cells.

Claims (3)

1/ Isolateur de ligne à courant alternatif muni d'un éclateur de protection formé de deux cornes fixées par des supports réglables de manière que l'écartement entre ces cornes soit bien déterminé, caractérisé par le fait qu'entre l'extrémité (13) dudit isolateur (1) destinée à être reliée à la terre et le support de la corne (7) correspondante, est interposé un dispositif de coupure de courant de suite composite (20) comportant une ou plusieurs pastilles (31, 32), en un matériau de type varistance, tel que l'oxyde de zinc, deux ferrures d'extrémités (23, 24), des moyens (38, 39) pour assurer la liaison électrique entre les deux ferrures et une enveloppe (40) formée d'un enroulement filamentaire en fibres de verre imprégnées de résine, l'ensemble étant muni d'un revêtement à ailettes (50) en élastomère injecté.1 / AC line isolator provided with a protective spark gap formed by two horns fixed by adjustable supports so that the spacing between these horns is well determined, characterized in that between the end (13) of said insulator (1) intended to be connected to the ground and the support of the corresponding horn (7), is interposed a composite current cutoff device (20) comprising one or more pads (31, 32), in one varistor type material, such as zinc oxide, two end fittings (23, 24), means (38, 39) for ensuring the electrical connection between the two fittings and a casing (40) formed of a filament winding made of glass fibers impregnated with resin, the assembly being provided with a finned coating (50) of injected elastomer. 2/ Isolateur de ligne à courant alternatif selon la revendication 1, caractérisé par le fait que ladite enveloppe (40) est telle que lesdites fibres ne recouvrent pas la totalité de la surface latérale de l'empilement formé par ladite varistance (31) et lesdites ferrures (23, 24), mais laisse libre des zones alvéolaires (42) contenant de la résine.2 / AC line insulator according to claim 1, characterized in that said envelope (40) is such that said fibers do not cover the entire lateral surface of the stack formed by said varistor (31) and said fittings (23, 24), but leaves free of the cellular zones (42) containing resin. 3/ Isolateur de ligne à courant alternatif selon la revendication 2, caractérisé par le fait que l'angle du bobinage dudit enroulement filamentaire par rapport à l'axe (35) dudit dispositif de coupure de courant de suite est compris entre 30° et 60°.3 / AC line isolator according to claim 2, characterized in that the angle of the winding of said filament winding with respect to the axis (35) of said current cut-off device is between 30 ° and 60 °.
EP90401827A 1989-06-30 1990-06-26 Alternating current power line insulator with a protective spark arrester Expired - Lifetime EP0406099B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90401827T ATE103411T1 (en) 1989-06-30 1990-06-26 AC CATLINE INSULATOR WITH ARC FLASH PROTECTION ARRANGEMENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908823 1989-06-30
FR8908823A FR2649243B1 (en) 1989-06-30 1989-06-30 Line isolator with alternating current provided with a protective spark gap

Publications (2)

Publication Number Publication Date
EP0406099A1 true EP0406099A1 (en) 1991-01-02
EP0406099B1 EP0406099B1 (en) 1994-03-23

Family

ID=9383351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90401827A Expired - Lifetime EP0406099B1 (en) 1989-06-30 1990-06-26 Alternating current power line insulator with a protective spark arrester

Country Status (5)

Country Link
EP (1) EP0406099B1 (en)
AT (1) ATE103411T1 (en)
BR (1) BR9003040A (en)
DE (1) DE69007554T2 (en)
FR (1) FR2649243B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0506393A2 (en) * 1991-03-27 1992-09-30 Ngk Insulators, Ltd. Arrester
US5473116A (en) * 1994-03-31 1995-12-05 The United States Of America As Represented By The Secretary Of The Navy Quick change anti-corona connector
WO2005078461A2 (en) * 2004-02-13 2005-08-25 HSP Hochspannungsgeräte Porz GmbH Lead-through with a power semi-conductor component
CN103414108A (en) * 2013-08-21 2013-11-27 深圳供电局有限公司 Novel cavel combination gap
EP3073588A1 (en) * 2015-03-24 2016-09-28 Siemens Aktiengesellschaft Insulation kit for an overhead line
FR3107809A1 (en) * 2020-03-06 2021-09-10 Rte Reseau De Transport D'electricite Device for fixing an anti-bird rod on an anchoring end of an electrically conductive overhead line, corresponding anti-bird protection device and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467387A (en) * 1982-09-30 1984-08-21 General Electric Company Combination strut insulator and lightning arrester
EP0183873A1 (en) * 1984-12-07 1986-06-11 L 'Electricité Industrielle Belge S.A. Overvoltage arrester for a direct-current air conductor
EP0274674A1 (en) * 1986-12-12 1988-07-20 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Process for manufacturing a lightning arrester, and lightning arrester obtained by this process
EP0281945A1 (en) * 1987-03-06 1988-09-14 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Manufacturing process for a lightning arrester
EP0304690A1 (en) * 1987-08-06 1989-03-01 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Production process for a lightning arrester, and lightning arrester obtained by this process

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467387A (en) * 1982-09-30 1984-08-21 General Electric Company Combination strut insulator and lightning arrester
EP0183873A1 (en) * 1984-12-07 1986-06-11 L 'Electricité Industrielle Belge S.A. Overvoltage arrester for a direct-current air conductor
EP0274674A1 (en) * 1986-12-12 1988-07-20 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Process for manufacturing a lightning arrester, and lightning arrester obtained by this process
EP0281945A1 (en) * 1987-03-06 1988-09-14 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Manufacturing process for a lightning arrester
EP0304690A1 (en) * 1987-08-06 1989-03-01 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Production process for a lightning arrester, and lightning arrester obtained by this process

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Title
REVUE GENERALE DE L'ELECTRICITE. no. 9, octobre 1986, PARIS FR pages 39 - 41; LERONDEAU, MALAISE: "TRACTION ELECTRIQUE :LES PARAFOUDRES A OXIDE DE ZINC SUPPRIMENT LE COURANT DE SUITE" *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0506393A2 (en) * 1991-03-27 1992-09-30 Ngk Insulators, Ltd. Arrester
EP0506393A3 (en) * 1991-03-27 1993-11-10 Ngk Insulators Ltd Arrester
US5663863A (en) * 1991-03-27 1997-09-02 The Tokyo Electric Power Co., Inc. Line arrester
US5473116A (en) * 1994-03-31 1995-12-05 The United States Of America As Represented By The Secretary Of The Navy Quick change anti-corona connector
WO2005078461A2 (en) * 2004-02-13 2005-08-25 HSP Hochspannungsgeräte Porz GmbH Lead-through with a power semi-conductor component
WO2005078461A3 (en) * 2004-02-13 2008-12-18 Hsp Hochspannungsgeraete Porz Lead-through with a power semi-conductor component
CN103414108A (en) * 2013-08-21 2013-11-27 深圳供电局有限公司 Novel cavel combination gap
CN103414108B (en) * 2013-08-21 2015-07-29 深圳供电局有限公司 A kind of goat's horn combinational gap
EP3073588A1 (en) * 2015-03-24 2016-09-28 Siemens Aktiengesellschaft Insulation kit for an overhead line
WO2016150709A1 (en) * 2015-03-24 2016-09-29 Siemens Aktiengesellschaft Insulator arrangement for an overhead line
FR3107809A1 (en) * 2020-03-06 2021-09-10 Rte Reseau De Transport D'electricite Device for fixing an anti-bird rod on an anchoring end of an electrically conductive overhead line, corresponding anti-bird protection device and method

Also Published As

Publication number Publication date
BR9003040A (en) 1991-08-20
EP0406099B1 (en) 1994-03-23
DE69007554D1 (en) 1994-04-28
ATE103411T1 (en) 1994-04-15
FR2649243B1 (en) 1994-04-29
FR2649243A1 (en) 1991-01-04
DE69007554T2 (en) 1994-07-21

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