EP0264684A1 - Composite insulator with an insulating covering moulded onto it - Google Patents

Composite insulator with an insulating covering moulded onto it Download PDF

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Publication number
EP0264684A1
EP0264684A1 EP87114361A EP87114361A EP0264684A1 EP 0264684 A1 EP0264684 A1 EP 0264684A1 EP 87114361 A EP87114361 A EP 87114361A EP 87114361 A EP87114361 A EP 87114361A EP 0264684 A1 EP0264684 A1 EP 0264684A1
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EP
European Patent Office
Prior art keywords
fittings
insulator
composite insulator
coating
rod
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Granted
Application number
EP87114361A
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German (de)
French (fr)
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EP0264684B1 (en
Inventor
Maurice Soucille
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe Europeenne dIsolateurs en Verre et Composite SEDIVER SA
Original Assignee
Ceraver SA
Societe Europeenne dIsolateurs en Verre et Composite SEDIVER SA
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Publication of EP0264684A1 publication Critical patent/EP0264684A1/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
    • H01B17/32—Single insulators consisting of two or more dissimilar insulating bodies
    • H01B17/325—Single insulators consisting of two or more dissimilar insulating bodies comprising a fibre-reinforced insulating core member
    • 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
    • H01B17/38—Fittings, e.g. caps; Fastenings therefor
    • H01B17/40—Cementless fittings

Definitions

  • the present invention relates to a composite insulator with an overmolded insulating coating.
  • a composite insulator with an overmolded insulating coating Such an insulator and a method for its manufacture are described in particular in French patent No. 2 506 997. It comprises a ring of fibers agglomerated by a synthetic resin, whose ends are respectively secured in blind holes provided by two metal fittings d anchoring, and the side wall of which receives by overmolding a finned coating of elastomer, for example of EPDM.
  • Each metal fitting described for example in French Patent No. 2,541,501, thus presents an internal cylindrical housing whose inlet is provided with a bead defining the "entrance plane" of the fitting; the insulator creepage line is defined between the "entry planes" of the two end fittings.
  • the insulating coating of the rod must adhere perfectly to the internal face of the bead to prevent any trace of moisture from reaching the rod and rapidly damaging the insulator.
  • the entry of the fitting remains a critical area, because it is the seat of power arcs which are likely to deteriorate the anchoring of the rod and the sealing.
  • the present invention aims to avoid these drawbacks.
  • the subject of the present invention is a composite insulator with an overmolded insulating coating, comprising a central rod of fibers agglomerated by a synthetic resin, two end fittings, a coating of elastomeric fins, characterized in that each end of said rod and the the end of the corresponding fitting which has the shape of a solid cylinder are placed end to end and clamped in a common sleeve, and that said covering covers the entire side wall of said sleeve and at least part of the side wall of said fittings, so as to leave only an area necessary for hanging the insulator.
  • double internal anchoring This gives an isolator called "double internal anchoring" which has many advantages. For a given length of insulator, the creepage distance of the insulator is extended. The anchor itself is much better protected from the point of view of sealing. In addition, the area where a power arc can occur is far from the anchor and is on a non-critical part of the fitting.
  • any form of fitting can be provided: its hooking end can be in the form of a button, clevis, tenon, ball joint housing, eyelet, Y clevis in particular.
  • the insulator 30 in FIG. 1 comprises a central rod 32, and two end fittings; the fitting 31 illustrated has a cylindrical end 33 having the same diameter as the rod 32, and the other end in the form of a button 35.
  • the attachment is effected by introducing the ends of the rod 32 and the fitting into a metal tube 34 ductile, followed by swaging, for example by the process described in french patent No. 2 514 546.
  • the coating fins 36 completely covers the elastomeric tube 34, and a large part of the side wall 37 of the fitting 31, so as to leave only an area necessary for the attachment of the button 35.
  • the covering 36 ends with a fin 38.
  • This embodiment is particularly advantageous because it is very economical.
  • the metal part 31 has a very simple shape; the tube 34 can be a steel tube which is commonly found on the market and which does not need to be galvanized, since it is extremely well protected by the coating 36.
  • the insulator 40 in FIG. 2 is very close to that of the insulator 30 in FIG. 1. Identical elements have been indicated by the same reference numbers.
  • the covering 46 is distinct from the covering 36 because it ends in a sleeve 48.
  • the cylindrical end of the fitting 51 has a diameter smaller than that of the rod 52.
  • the sleeving can still be carried out using a metal tube 54.
  • the covering 56 ends with a fin 58, while, in FIG. 6, the covering 66 of the insulator 60 ends with a sleeve 68.
  • the diameter of the rod 72 which is less than that of the cylindrical end of the fitting 71; the sleeving is carried out using a tube 74 and the elastomer coating 76 ends with a fin 78, while in the insulator 80 of FIG. 8 the coating 86 ends with a sleeve 88.
  • the line of flight of the insulator is elongated compared to the provisions of the prior art, in particular by the fact that it is possible to provide additional fins; the electrical performance of the insulator is improved.
  • the power arcs which risked deteriorating the anchoring in the previous arrangements, are carried over into the extreme outer zone of the fittings, which does not present any significant drawback.
  • These fittings are made of a material chosen from steel, cast iron, bronze, aluminum in particular.
  • the invention applies for example to suspension insulators for voltages which can go beyond 735 Kvolts.

Abstract

Composite insulator (30) with an insulating covering (36) moulded onto it, comprising a central rod (32) of fibres agglomerated by a synthetic resin, whose ends are solidly connected by sleeve-coupling respectively to two end-fittings (31) and whose lateral wall is provided, by over-moulding, with a covering having ribs made of elastomer; the said covering covers the lateral wall (37) of the said end-fittings (31) so as to provide only one zone (35) necessary for attaching the insulator. <IMAGE>

Description

La présente invention concerne un isolateur composite à revêtement isolant surmoulé. Un tel isolateur et un procédé pour sa fabrication sont décrits notamment dans le brevet français n o 2 506 997. Il comporte un jonc de fibres agglomérées par une résine synthétique, dont les extrémités sont solidarisées respectivement dans des cavités borgnes présentées par deux ferrures métalliques d'ancrage, et dont la paroi latérale reçoit par surmoulage un revêtement à ailettes en élastomère, par exemple en EPDM.The present invention relates to a composite insulator with an overmolded insulating coating. Such an insulator and a method for its manufacture are described in particular in French patent No. 2 506 997. It comprises a ring of fibers agglomerated by a synthetic resin, whose ends are respectively secured in blind holes provided by two metal fittings d anchoring, and the side wall of which receives by overmolding a finned coating of elastomer, for example of EPDM.

Chaque ferrure métallique, décrite par exemple dans le brevet français n o 2 541 501, présente donc un logement cylindrique interne dont l'entrée est munie d'un bourrelet définissant "le plan d'entrée" de la ferrure ; la ligne de fuite de l'isolateur se définit entre les "plans d'entrée" des deux ferrures d'extrémité.Each metal fitting, described for example in French Patent No. 2,541,501, thus presents an internal cylindrical housing whose inlet is provided with a bead defining the "entrance plane" of the fitting; the insulator creepage line is defined between the "entry planes" of the two end fittings.

Le revêtement isolant du jonc doit adhérer parfaitement à la face interne du bourrelet pour éviter que toute trace d'humidité puisse atteindre le jonc et détériorer très rapidement l'isolateur. De plus, l'entrée de la ferrure demeure une zone critique, car elle est le siège d'arcs de puissance qui sont susceptibles de détériorer l'ancrage du jonc et l'étanchéité.The insulating coating of the rod must adhere perfectly to the internal face of the bead to prevent any trace of moisture from reaching the rod and rapidly damaging the insulator. In addition, the entry of the fitting remains a critical area, because it is the seat of power arcs which are likely to deteriorate the anchoring of the rod and the sealing.

La présente invention a pour but d'éviter ces inconvénients.The present invention aims to avoid these drawbacks.

La présente invention a pour objet un isolateur composite à revêtement isolant surmoulé, comportant un jonc central de fibres agglomérées par une résine synthétique, deux ferrures d'extrémités, un revêtement à ailettes en élastomère, caractérisé par le fait que chaque extrémité dudit jonc et l'extrémité de la ferrure correspondante qui présente la forme d'un cylindre plein sont disposées bout à bout et serrées dans un manchon commun, et que ledit revêtement recouvre toute la paroi latérale dudit manchon et au moins une partie de la paroi latérale desdites ferrures, de manière à ne ménager qu'une zone nécessaire à l'accrochage de l'isolateur.The subject of the present invention is a composite insulator with an overmolded insulating coating, comprising a central rod of fibers agglomerated by a synthetic resin, two end fittings, a coating of elastomeric fins, characterized in that each end of said rod and the the end of the corresponding fitting which has the shape of a solid cylinder are placed end to end and clamped in a common sleeve, and that said covering covers the entire side wall of said sleeve and at least part of the side wall of said fittings, so as to leave only an area necessary for hanging the insulator.

On obtient ainsi un isolateur dit "à double ancrage interne" qui présente de nombreux avantages. Pour une longueur d'isolateur donnée, la ligne de fuite de l'isolateur est allongée. L'ancrage proprement dit est beaucoup mieux protégé du point de vue de l'étanchéité. En outre, la zone où peut se produire un arc de puissance est éloignée de l'ancrage et se trouve sur une partie non critique de la ferrure.This gives an isolator called "double internal anchoring" which has many advantages. For a given length of insulator, the creepage distance of the insulator is extended. The anchor itself is much better protected from the point of view of sealing. In addition, the area where a power arc can occur is far from the anchor and is on a non-critical part of the fitting.

Toute forme de ferrure peut être prévue : son extrémité d'accrochage peut être en forme de bouton, chape, tenon, logement de rotule, oeillet, chape Y notamment.Any form of fitting can be provided: its hooking end can be in the form of a button, clevis, tenon, ball joint housing, eyelet, Y clevis in particular.

D'autres caractéristiques et avantages de la présente invention apparaîtront au cours de la description suivante de divers modes de réalisation donnés à titre d'exemples non limitatifs. Dans le dessin annexé :

  • - Les figures 1 et 2 sont deux vues partielles en coupe d'isolateurs de suspension selon l'invention.
  • - Les figures 3 et 4 sont des variantes des figures 1 et 2, le diamètre du jonc étant supérieur à celui de la ferrure.
  • - Les figures 5 et 6 sont des variantes des figures 1 et 2, le diamètre du jonc étant inférieur à celui de la ferrure.
Other characteristics and advantages of the present invention will appear during the following description of various embodiments given by way of nonlimiting examples. In the attached drawing:
  • - Figures 1 and 2 are two partial sectional views of suspension insulators according to the invention.
  • - Figures 3 and 4 are variants of Figures 1 and 2, the diameter of the rod being greater than that of the fitting.
  • - Figures 5 and 6 are variants of Figures 1 and 2, the diameter of the rod being less than that of the fitting.

L'isolateur 30 de la figure 1 comporte un jonc central 32, et deux ferrures extrêmes ; la ferrure 31 illustrée a une extrémité cylindrique 33 présentant le même diamètre que le jonc 32, et l'autre extrémité en forme de bouton 35. La solidarisation est effectuée par introduction des extrémités du jonc 32 et de la ferrure dans un tube 34 en métal ductile, suivie d'un manchonnage, par exemple selon le procédé décrit dans le brevet français n o 2 514 546. Le revêtement à ailettes 36 en élastomère recouvre entièrement le tube 34, ainsi qu'une grande partie de la paroi latérale 37 de la ferrure 31, de manière à ne laisser qu'une zone nécessaire à l'accrochage du bouton 35. Le rev êtement 36 se termine par une ailette 38.
Ce mode de réalisation est particulièrement avantageux, car très économique. La pièce métallique 31 a une forme très simple ; le tube 34 peut être un tube en acier que l'on trouve couramment dans le commerce et qui n'a pas besoin d'être galvanisé, puisqu'il est extrêmement bien protégé par le revêtement 36.The insulator 30 in FIG. 1 comprises a central rod 32, and two end fittings; the fitting 31 illustrated has a cylindrical end 33 having the same diameter as the rod 32, and the other end in the form of a button 35. The attachment is effected by introducing the ends of the rod 32 and the fitting into a metal tube 34 ductile, followed by swaging, for example by the process described in french patent No. 2 514 546. the coating fins 36 completely covers the elastomeric tube 34, and a large part of the side wall 37 of the fitting 31, so as to leave only an area necessary for the attachment of the button 35. The covering 36 ends with a fin 38.
This embodiment is particularly advantageous because it is very economical. The metal part 31 has a very simple shape; the tube 34 can be a steel tube which is commonly found on the market and which does not need to be galvanized, since it is extremely well protected by the coating 36.

Pour obtenir une adhérence parfaite entre la face latérale 37 de la ferrure 31, celle du manchon 34, et le revêtement en élastomère 36, il convient de nettoyer ces faces de manière connue en soi, et d'appliquer ensuite un agent d'adhérisation élastomère-métal. L'état de surface initial des faces métalliques n'est pas du tout critique, et la qualité de la liaison revêtement-ferrure est tout à fait étonnante : il faut appliquer une force supérieure à 1ON/cm pour obtenir un début d'arrachement du revêtement de la surface de la ferrure. Ce résultat est inattendu car, pour arriver à réaliser un surmoulage efficace et combler tous les interstices afin d'obtenir l'étanchéité recherchée, il faut injecter l'élastomère sous une pression très élevée, de l'ordre de 50 à 60 bars. Or, il était à craindre que, sous l'effet d'une telle pression, le produit d'adhérisation élastomère-métal soit plus au moins endommagé et qu'il apparaisse des bulles entre les faces métalliques et son revêtement. Ce n'est pas le cas.To obtain perfect adhesion between the lateral face 37 of the fitting 31, that of the sleeve 34, and the elastomer coating 36, it is advisable to clean these faces in a manner known per se, and then to apply an elastomer bonding agent -metal. The initial surface condition of the metal faces is not at all critical, and the quality of the coating-fitting connection is quite surprising: a force greater than 1ON / cm must be applied to obtain a start of tearing of the coating of the surface of the fitting. This result is unexpected because, in order to achieve effective molding and fill all the gaps in order to obtain the desired seal, the elastomer must be injected under very high pressure, of the order of 50 to 60 bars. However, it was to be feared that, under the effect of such pressure, the elastomer-metal adhesion product would be more or less damaged and that bubbles would appear between the metal faces and its coating. This is not the case.

L'isolateur 40 de la figure 2 est très voisin de celui de l'isolateur 30 de la figure 1. On a indiqué par les mêmes nombres de référence les éléments identiques. Le revêtement 46 est distinct du revêtement 36 car il se termine par un manchon 48.The insulator 40 in FIG. 2 is very close to that of the insulator 30 in FIG. 1. Identical elements have been indicated by the same reference numbers. The covering 46 is distinct from the covering 36 because it ends in a sleeve 48.

Dans l'isolateur 50 de la figure 3, on a une configuration voisine, mais l'extrémité cylindrique de la ferrure 51 a un diamètre inférieur à celui du jonc 52. Le manchonnage peut encore être effectué à l'aide d'un tube métallique 54. Le revêtement 56 se termine par une ailette 58, alors que, dans la figure 6, le revêtement 66 de l'isolateur 60 se termine par un manchon 68.In the insulator 50 of FIG. 3, there is a neighboring configuration, but the cylindrical end of the fitting 51 has a diameter smaller than that of the rod 52. The sleeving can still be carried out using a metal tube 54. The covering 56 ends with a fin 58, while, in FIG. 6, the covering 66 of the insulator 60 ends with a sleeve 68.

Dans l'isolateur 70 de la figure 6, c'est le diamètre du jonc 72 qui est inférieur à celui de l'extrémité cylindrique de la ferrure 71 ; le manchonnage est réalisé grâce à un tube 74 et le revêtement en élastomère 76 se termine par une ailette 78, alors que dans l'isolateur 80 de la figure 8 le revêtement 86 se termine par un manchon 88.In the insulator 70 of FIG. 6, it is the diameter of the rod 72 which is less than that of the cylindrical end of the fitting 71; the sleeving is carried out using a tube 74 and the elastomer coating 76 ends with a fin 78, while in the insulator 80 of FIG. 8 the coating 86 ends with a sleeve 88.

Bien entendu, l'invention n'est pas limitée aux exemples qui viennent d'être décrits. Les formes des ferrures peuvent être modifiées.Of course, the invention is not limited to the examples which have just been described. The shapes of the fittings can be changed.

Dans toutes les variantes, la ligne de fuite de l'isolateur est allongée par rapport aux dispositions de l'art antérieur, notamment par le fait que l'on peut prévoir des ailettes supplémentaires ; les performances électriques de l'isolateur en sont améliorées.
Par ailleurs, on a aussi considérablement allongé le chemin que doivent parcourir les gouttes d'humidité avant de parvenir au niveau de l'ancrage proprement dit.
De plus, les arcs de puissance, qui risquaient de détériorier l'ancrage dans les dispositions antérieures, se reportent dans la zone extérieure extrême des ferrures, ce qui ne présente pas d'inconvénient notable. Ces ferrure sont en un matériau choisi parmi l'acier, la fonte, le bronze, l'aluminium notamment.In all variants, the line of flight of the insulator is elongated compared to the provisions of the prior art, in particular by the fact that it is possible to provide additional fins; the electrical performance of the insulator is improved.
In addition, we have also considerably lengthened the path that must be followed by the drops of moisture before reaching the level of the anchoring proper.
In addition, the power arcs, which risked deteriorating the anchoring in the previous arrangements, are carried over into the extreme outer zone of the fittings, which does not present any significant drawback. These fittings are made of a material chosen from steel, cast iron, bronze, aluminum in particular.

L'invention s'applique par exemple aux isolateurs de suspension pour des tensions pouvant aller au-delà de 735 Kvolts. The invention applies for example to suspension insulators for voltages which can go beyond 735 Kvolts.

Claims (3)

1/ Isolateur composite à revêtement isolant surmoulé, comportant un jonc central (32) de fibres agglomérées par une résine synthétique, deux ferrures d'extrémités (31) et un revêtement à ailettes (36) en élastomère, caractérisé par le fait que chaque extrémité (33) dudit jonc (32) et l'extrémité de la ferrure correspondante (31) qui présente la forme d'un cylindre plein (33) sont disposées bout à bout et serrées dans un manchon commun (34), et que ledit revêtement (36) recouvre toute la paroi latérale dudit manchon et au moins une partie de la partie latérale desdites ferrures de m anière à ne ménager qu'une zone (35) nécessaire à l'accrochage de l'isolateur.1 / Composite insulator with overmolded insulating coating, comprising a central rod (32) of fibers agglomerated by a synthetic resin, two end fittings (31) and a finned coating (36) made of elastomer, characterized in that each end (33) of said rod (32) and the end of the corresponding fitting (31) which has the shape of a solid cylinder (33) are placed end to end and clamped in a common sleeve (34), and that said coating (36) covers the entire side wall of said sleeve and at least part of the side part of said fittings so as to provide only an area (35) necessary for the attachment of the insulator. 2/ Isolateur composite selon la revendication 1, caractérisé par le fait que la zone d'accrochage (35) desdites ferrures est en forme de socle, de tenon, de bouton, de chape, de logement de rotule, et d'oeillet.2 / composite insulator according to claim 1, characterized in that the attachment zone (35) of said fittings is in the form of base, tenon, button, clevis, ball joint housing, and eyelet. 3/ Isolateur composite selon l'une des revendications précédentes, caractérisé par le fait que le matériau desdites ferrures est choisi parmi l'acier, la fonte, le bronze, l'aluminium.3 / composite insulator according to one of the preceding claims, characterized in that the material of said fittings is chosen from steel, cast iron, bronze, aluminum.
EP87114361A 1986-10-02 1987-10-01 Composite insulator with an insulating covering moulded onto it Expired - Lifetime EP0264684B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8613758A FR2604821B1 (en) 1986-10-02 1986-10-02 COMPOSITE INSULATOR WITH OVER-MOLDED INSULATING COATING
FR8613758 1986-10-02

Publications (2)

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EP0264684A1 true EP0264684A1 (en) 1988-04-27
EP0264684B1 EP0264684B1 (en) 1995-01-04

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EP87114361A Expired - Lifetime EP0264684B1 (en) 1986-10-02 1987-10-01 Composite insulator with an insulating covering moulded onto it

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EP (1) EP0264684B1 (en)
JP (1) JP2532889B2 (en)
AT (1) ATE116761T1 (en)
AU (1) AU601224B2 (en)
BR (1) BR8705112A (en)
CA (1) CA1291229C (en)
DE (1) DE3750946T2 (en)
FR (1) FR2604821B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5233132A (en) * 1986-10-02 1993-08-03 Sediver Societe Europeenne D'isolateurs En Composite insulator comprising a fiber-resin rod and an insulating coating molded thereover
EP0430135B1 (en) * 1989-12-01 1995-05-10 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Rigid electrical insulator
EP1383141A1 (en) * 2002-07-18 2004-01-21 Sediver Société Europeenne d'Isolateurs en Verre et Composite Manufacturing of a composite insulator body
EP1528576A2 (en) * 2003-10-28 2005-05-04 Hitachi, Ltd. Electrical insulator
WO2012143620A1 (en) * 2011-04-19 2012-10-26 Sediver Societe Europeenne D'isolateurs En Verre Et Composite Method of manufacturing a composite insulator using a resin with high thermal performance

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8802841D0 (en) * 1988-02-08 1988-03-09 Raychem Ltd High voltage insulator
JP4460043B2 (en) * 2001-07-23 2010-05-12 古河電気工業株式会社 Optical fiber built-in insulator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1515766A1 (en) * 1964-05-28 1969-12-11 Gen Electric Electrical isolator
DE1932949A1 (en) * 1969-06-28 1971-01-07 Bbc Brown Boveri & Cie High-voltage composite insulator
GB2104171A (en) * 1981-06-30 1983-03-02 Ceraver Method of joining an insulating rod to a metal end piece
EP0121133A2 (en) * 1983-03-09 1984-10-10 DÄTWYLER AG Schweizerische Kabel- Gummi- und Kunststoffwerke Method of making an electrical synthetic insulator, and insulator made by the method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506997A1 (en) * 1981-06-01 1982-12-03 Ceraver METHOD FOR MANUFACTURING AN ORGANIC INSULATOR
FR2541501B1 (en) * 1983-02-22 1985-08-02 Ceraver PROCESS FOR FIXING A TAPERED METAL SLEEVE ON A JOINT OF COMPOSITE MATERIAL
FR2543356B1 (en) * 1983-03-25 1986-01-10 Ceraver METHOD AND DEVICE FOR MOLDING THE INSULATING COATING OF A LARGE ORGANIC INSULATOR

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1515766A1 (en) * 1964-05-28 1969-12-11 Gen Electric Electrical isolator
DE1932949A1 (en) * 1969-06-28 1971-01-07 Bbc Brown Boveri & Cie High-voltage composite insulator
GB2104171A (en) * 1981-06-30 1983-03-02 Ceraver Method of joining an insulating rod to a metal end piece
EP0121133A2 (en) * 1983-03-09 1984-10-10 DÄTWYLER AG Schweizerische Kabel- Gummi- und Kunststoffwerke Method of making an electrical synthetic insulator, and insulator made by the method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5233132A (en) * 1986-10-02 1993-08-03 Sediver Societe Europeenne D'isolateurs En Composite insulator comprising a fiber-resin rod and an insulating coating molded thereover
EP0430135B1 (en) * 1989-12-01 1995-05-10 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Rigid electrical insulator
EP1383141A1 (en) * 2002-07-18 2004-01-21 Sediver Société Europeenne d'Isolateurs en Verre et Composite Manufacturing of a composite insulator body
FR2842644A1 (en) * 2002-07-18 2004-01-23 Sediver MANUFACTURE OF A COMPOSITE INSULATOR BODY
US6822167B2 (en) 2002-07-18 2004-11-23 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Making a composite insulator body
EP1528576A2 (en) * 2003-10-28 2005-05-04 Hitachi, Ltd. Electrical insulator
EP1528576A3 (en) * 2003-10-28 2006-02-01 Hitachi, Ltd. Electrical insulator
WO2012143620A1 (en) * 2011-04-19 2012-10-26 Sediver Societe Europeenne D'isolateurs En Verre Et Composite Method of manufacturing a composite insulator using a resin with high thermal performance

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DE3750946D1 (en) 1995-02-16
CA1291229C (en) 1991-10-22
AU601224B2 (en) 1990-09-06
ATE116761T1 (en) 1995-01-15
AU7925987A (en) 1988-04-14
BR8705112A (en) 1988-05-24
FR2604821B1 (en) 1990-01-12
JP2532889B2 (en) 1996-09-11
JPS6398921A (en) 1988-04-30
DE3750946T2 (en) 1995-05-11
EP0264684B1 (en) 1995-01-04
FR2604821A1 (en) 1988-04-08

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