EP0430135A1 - Rigid electrical insulator - Google Patents

Rigid electrical insulator Download PDF

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Publication number
EP0430135A1
EP0430135A1 EP90122543A EP90122543A EP0430135A1 EP 0430135 A1 EP0430135 A1 EP 0430135A1 EP 90122543 A EP90122543 A EP 90122543A EP 90122543 A EP90122543 A EP 90122543A EP 0430135 A1 EP0430135 A1 EP 0430135A1
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EP
European Patent Office
Prior art keywords
rod
rigid
electrical insulator
head
insulator according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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EP90122543A
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German (de)
French (fr)
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EP0430135B1 (en
Inventor
Ren˩ Parraud
Guy Thevenet
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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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    • 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
    • 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
    • H01B17/14—Supporting insulators

Definitions

  • the present invention relates to a rigid electrical insulator.
  • rigid insulator Two types of rigid insulator are known, the rigid rod insulator meeting the ANSI C29-6-1984 standard and the rigid base insulator conforming to the ANSI C29-7-1983 standard, or IEC 720.
  • Such an insulator comprises at least one dielectric made of porcelain, glass or cycloaliphatic resin, the lower end of which is carried by a metal rod or bag, and the head of which has a groove intended to directly receive an electric cable.
  • the groove can be located on the lateral face and / or on the upper face of the head.
  • the electric cable is held there using a tie.
  • the dimensions of the grooves and the shapes of the ligatures are standardized.
  • the object of the present invention is to provide a type of rigid electrical insulator making it possible to overcome its drawbacks.
  • the subject of the present invention is a rigid electrical insulator of the bag or rod type, the upper insulating end of which has at least one groove intended to receive an electrical cable, characterized in that it comprises at least one fixed central rod at its lower part of said bag or said rod, and at its upper part to a rigid head provided with at least one groove, the external face of said rod and of said rigid head being tightly covered by a coating, that of said the head being made of flexible elastomer and that of said rod being chosen from elastomers, resins and varnishes, said groove provided with its coating defining said groove.
  • the external surface of said rod is preferably cylindrical with a frustoconical shape.
  • the rod can be full or hollow; its end linked to said rigid head may advantageously be provided with grooves, or with suitable machining.
  • Said rigid head is made of a material chosen from thermoplastic (polyester, polyamide, polyacetal, etc.) or thermosetting materials (epoxy, polyurethane, etc.), ceramics, glass, porcelain, or metals.
  • thermoplastic polyethylene, polyamide, polyacetal, etc.
  • thermosetting materials epoxy, polyurethane, etc.
  • ceramics glass, porcelain, or metals.
  • an insulating material will be used. The latter can be loaded with mineral fillers, or insulating or semiconducting fibers.
  • Said rigid head can be molded on the corresponding end of the rod, or be fixed by gluing or any other suitable means.
  • the flexible elastomer of the coating of said rigid head is chosen from vulcanizable elastomers (EPDM, Silocone, etc.) and thermoplastic elastomers.
  • the material of the covering of the rod can be chosen from the above elastomers, varnishes, epoxy resins, polyesters, loaded or not; this coating can be smooth or include fins of various shapes.
  • a rigid composite insulator according to the invention can be used in a voltage range between 5 and 100 Kvolts and has many advantages. Thus, it resists bending forces better than known rigid insulators. In the event of significant bending corresponding to a load greater than the normalized value, no sharp break is observed which could cause the cable to fall.
  • the insulator according to the invention is much more resistant to shocks due to vandalism; there again the risks of frank rupture are limited.
  • the cable is housed in a groove defined by a groove provided in the rigid head and provided with an elastomer coating. Even if it is subjected to vibrations, the cable rests on a flexible mattress which prevents any abrasion of its strands.
  • the insulator according to the invention is lighter and less bulky than the known rigid insulators having equivalent insulation properties. We also note that its level of disturbances Radio is very weak.
  • FIG. 1 shows a composite rigid insulator according to the invention to be compared with a rigid ceramic insulator of class 57.3 of the ANSI standard.
  • a central rod 1 made of glass fibers agglomerated by a resin, one end of which 2 is fixed in a housing 4 of a fitting 5 in the form of a base.
  • Its end 3, provided with at least one groove, is linked, for example by overmolding, to a rigid head 7 of thermosetting resin.
  • the head 7 has a lateral groove 8 and an upper groove 9.
  • the external face of the rigid head 7, of the rod 1 and of a part of the fitting 5, is provided by overmolding with an elastomer coating 10. This coating defines on the side of the head 7, an upper groove 19, located opposite the groove 9, and a lateral groove 18, located opposite the groove 8.
  • the coating 10 illustrated comprises the fins 11 which may be of different profiles and of different diameters.
  • the maximum diameter of the insulator according to the invention is included between 45 mm and 65 mm, while the diameter of the corresponding porcelain insulator is 85 to 130 mm.
  • the weight of the insulator according to the invention is approximately three times less than that of the directly comparable porcelain insulator.
  • the insulator of Figure 1 was mounted in a test machine recording the load and the corresponding deflection.
  • the ANSI standard requires a flexural strength of 2,800 lbs.
  • the deflection observed is 28 mm, while for the porcelain insulator, it is a few millimeters.
  • this value is very close to the arrow causing the rupture of the head of the insulator, while, for the insulator according to the invention, the rupture occurs only when the arrow is of around 50 mm corresponding to a load of 4,300 lbs.
  • Figures 2 to 11 show alternative embodiments of several elements of the insulator of Figure 1.
  • the coating 20 of elastomer ( Figure 2) is provided with fins all having the same configuration.
  • the fins of the elastomer coating 21 Figure 3) have lower ribs 23.
  • the coating 22 ( Figure 4) is a tubular sheath whose material is of the varnish type.
  • the rod 31 has the shape of a truncated cone, the ends of which are secured respectively to a metal base 30 and to a rigid insulating head 40.
  • the rod 32 is a hollow cylinder which can optionally be filled with an insulating foam or resin 33 (FIG. 7).
  • the rod 34 is a hollow truncated cone, which can may also be filled with foam or insulating resin 33 ( Figure 9).
  • the insulator comprises two rods 61 and 62 secured parallel to one another to a metal base 50 and to a rigid insulating head 60.
  • the number of rods can be greater than two.
  • a metal ring 42 constituting a metallic connecting piece is fixed around the rod 41 under the rigid head 40.
  • the exposed faces of the rod 41 and of the head 40 are provided with waterproof coatings 43 , 44 which may be made of different materials. The junction between these two coatings can be achieved by the metal part.
  • the invention also applies to rigid rod insulators which are fixed in the central rod.
  • a head of insulating material has been described.
  • the material for coating the rigid head is chosen so as to be as flexible as possible.
  • the insulator comprises several rods, the latter are not necessarily arranged parallel to each other.

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  • Insulators (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Insulating Bodies (AREA)
  • Inorganic Insulating Materials (AREA)
  • Organic Insulating Materials (AREA)
  • Steroid Compounds (AREA)

Abstract

The invention relates to a rigid electrical insulator of the line post or pin type, of which the lower end is fixed to the said line post or to the said pin and the insulating upper end of which has at least one groove intended to receive an electrical cable. According to the invention, this insulator comprises at least one central rod (1) fixed at its lower portion to the said line post (5) or to the said pin and at its upper portion to a rigid head (7) equipped with at least one indentation (8), the external face of the said rod and of the said rigid head being covered in a sealed manner by a covering (10), that of the said head being made from flexible elastomer and that of the rod being chosen from elastomers, resins and varnishes, the said indentation (8) provided with its covering defining the said groove (18). <IMAGE>

Description

La présente invention concerne un isolateur électrique rigide.The present invention relates to a rigid electrical insulator.

On connaît deux types d'isolateur rigide, l'isolateur rigide à tige répondant à la norme ANSI C29-6-1984 et l'isolateur rigide à socle conforme à la norme ANSI C29-7-1983, ou IEC 720.Two types of rigid insulator are known, the rigid rod insulator meeting the ANSI C29-6-1984 standard and the rigid base insulator conforming to the ANSI C29-7-1983 standard, or IEC 720.

Un tel isolateur comporte au moins un diélectrique en porcelaine, en verre ou en résine cycloaliphatique, dont l'extrémité inférieure est portée par une tige ou un sache métallique, et dont la tête présente une gorge destinée à recevoir directement un câble électrique.
La gorge peut être située sur la face latérale et/au la face supérieure de la tête. Le câble électrique y est maintenu à l'aide d'une ligature. Les dimensions des gorges et les formes des ligatures sont normalisées.Such an insulator comprises at least one dielectric made of porcelain, glass or cycloaliphatic resin, the lower end of which is carried by a metal rod or bag, and the head of which has a groove intended to directly receive an electric cable.
The groove can be located on the lateral face and / or on the upper face of the head. The electric cable is held there using a tie. The dimensions of the grooves and the shapes of the ligatures are standardized.

On constate que, lorsque les isolateurs connus sont soumis à des actes de vandalisme, leur diélectrique risque de se briser totalement en entraînant la chute du câble.
On observe en outre une résistance à la flexion parfois insuffisante et une certaine érosion du câble au niveau de sa zone de contact avec la gorge de l'isolateur, pouvant entraîner la rupture du câble.It is noted that, when the known insulators are subjected to acts of vandalism, their dielectric is liable to break completely, causing the cable to fall.
There is also observed a resistance to flexion which is sometimes insufficient and a certain erosion of the cable at the level of its zone of contact with the groove of the insulator, which can cause the cable to break.

La présente invention a pour but de réaliser un type d'isolateur électrique rigide permettant de pallier ses inconvénients.The object of the present invention is to provide a type of rigid electrical insulator making it possible to overcome its drawbacks.

La présente invention a pour objet un isolateur électrique rigide de type à sache ou à tige, dont l'extrémité supérieure isolante présente au moins une gorge destinée à recevoir un câble électrique, caractérisé par le fait qu'il comporte au moins un jonc central fixé à sa partie inférieure audit sache ou à ladite tige, et à sa partie supérieure à une tête rigide munie d'au moins une rainure, la face externe dudit jonc et de ladite tête rigide étant recouverte de manière étanche par un revêtement, celui de ladite tête étant en élastomère souple et celui dudit jonc étant choisi parmi les élastomères, les résines et les vernis, ladite rainure munie de son revêtement définissant ladite gorge.The subject of the present invention is a rigid electrical insulator of the bag or rod type, the upper insulating end of which has at least one groove intended to receive an electrical cable, characterized in that it comprises at least one fixed central rod at its lower part of said bag or said rod, and at its upper part to a rigid head provided with at least one groove, the external face of said rod and of said rigid head being tightly covered by a coating, that of said the head being made of flexible elastomer and that of said rod being chosen from elastomers, resins and varnishes, said groove provided with its coating defining said groove.

La surface externe dudit jonc est de préférence cylindrique au en tronc de cône.The external surface of said rod is preferably cylindrical with a frustoconical shape.

Le jonc peut être plein ou creux ; son extrémité liée à ladite tête rigide peut être avantageusement munie de cannelures, ou d'un usinage approprié.The rod can be full or hollow; its end linked to said rigid head may advantageously be provided with grooves, or with suitable machining.

Ladite tête rigide est en un matériau choisi parmi les matériaux thermoplastiques (polyester, polyamide, polyacétal,...) ou thermodurcissables (époxy, polyuréthane...), les céramiques, le verre, la porcelaine, ou les métaux. De préférence, pour des raisons électriques, on prendra un matériau isolant. Ce dernier peut être chargé de charges minérales, ou de fibres isolantes ou semi-conductrices.Said rigid head is made of a material chosen from thermoplastic (polyester, polyamide, polyacetal, etc.) or thermosetting materials (epoxy, polyurethane, etc.), ceramics, glass, porcelain, or metals. Preferably, for electrical reasons, an insulating material will be used. The latter can be loaded with mineral fillers, or insulating or semiconducting fibers.

Ladite tête rigide peut être moulée sur l'extrémité correspondante du jonc, ou être fixée par collage ou tout autre moyen approprié.Said rigid head can be molded on the corresponding end of the rod, or be fixed by gluing or any other suitable means.

L'élastomère souple du revêtement de ladite tête rigide est choisi parmi les élastomères vulcanisables (EPDM, Silocone...) et les élastomères thermoplastiques. Le matériau du revêtement du jonc peut être choisi parmi les élastomères précédents, les vernis, les résines époxy, polyesters, chargées ou non ; ce revêtement peut être lisse ou comporter des ailettes de formes variées.The flexible elastomer of the coating of said rigid head is chosen from vulcanizable elastomers (EPDM, Silocone, etc.) and thermoplastic elastomers. The material of the covering of the rod can be chosen from the above elastomers, varnishes, epoxy resins, polyesters, loaded or not; this coating can be smooth or include fins of various shapes.

Un isolateur rigide composite selon l'invention est utilisable dans un domaine de tension compris entre 5 et 100 Kvolts et présente de nombreux avantages.
Ainsi, il résiste mieux aux efforts de flexion que les isolateurs rigides connus. En cas de flexion importante correspondant à une charge supérieure à la valeur normalisée, on n'observe pas de rupture franche susceptible d'entraîner la chute du câble.
L'isolateur selon l'invention résiste beaucoup mieux aux chocs dûs au vandalisme ; là encore les risques de rupture franche sont limités. Par ailleurs le câble est logé dans une gorge définie par une rainure prévue dans la tête rigide et pourvue d'un revêtement en élastomère. Même s'il subit des vibrations, le câble repose sur un matelas souple qui évite toute abrasion de ses brins.
L'isolateur selon l'invention est plus léger et moins encombrant que les isolateurs rigides connus présentant des propriétés d'isolement équivalentes. On constate en outre que son niveau de perturbations Radio est très faible.A rigid composite insulator according to the invention can be used in a voltage range between 5 and 100 Kvolts and has many advantages.
Thus, it resists bending forces better than known rigid insulators. In the event of significant bending corresponding to a load greater than the normalized value, no sharp break is observed which could cause the cable to fall.
The insulator according to the invention is much more resistant to shocks due to vandalism; there again the risks of frank rupture are limited. Furthermore, the cable is housed in a groove defined by a groove provided in the rigid head and provided with an elastomer coating. Even if it is subjected to vibrations, the cable rests on a flexible mattress which prevents any abrasion of its strands.
The insulator according to the invention is lighter and less bulky than the known rigid insulators having equivalent insulation properties. We also note that its level of disturbances Radio is very weak.

D'autres caractéristiques et avantages de la présente invention apparaîtront au cours de la description suivante de modes de réalisation donnés à titre illustratif mais nullement limitatif. Dans le dessin annexé :

  • La figure 1 est une vue schématique semi-coupée longitudinalement d'un isolateur rigide composite selon l'invention.
  • Les figures 2 à 4 sont des vues partielles schématiques en coupe de trois variantes de revêtement d'un isolateur selon l'invention.
  • Les figures 5 à 9 sont des vues partielles schématiques en coupe longitudinale d'isolateurs selon l'invention avec diverses variantes de jonc.
  • La figure 10 est une vue partielle schématique en coupe d'une variante d'isolateur selon l'invention à plusieurs joncs.
  • La figure 11 est une vue schématique en coupe d'une autre variante d'isolateur selon l'invention.
Other characteristics and advantages of the present invention will appear during the following description of embodiments given by way of illustration but in no way limitative. In the attached drawing:
  • Figure 1 is a schematic semi-cut longitudinally view of a rigid composite insulator according to the invention.
  • Figures 2 to 4 are schematic partial sectional views of three variants of coating of an insulator according to the invention.
  • Figures 5 to 9 are schematic partial views in longitudinal section of insulators according to the invention with various variants of rod.
  • Figure 10 is a partial schematic sectional view of an alternative insulator according to the invention with several rods.
  • Figure 11 is a schematic sectional view of another alternative insulator according to the invention.

On voit dans la figure 1 un isolateur rigide composite selon l'invention à comparer avec un isolateur rigide en céramique de la classe 57.3 de la norme ANSI.FIG. 1 shows a composite rigid insulator according to the invention to be compared with a rigid ceramic insulator of class 57.3 of the ANSI standard.

Il comprend un jonc central 1 en fibres de verre agglomérées par une résine, dont une extrémité 2 est fixée dans un logement 4 d'une ferrure 5 en forme de socle. Son extrémité 3, munie d'au moins une cannelure, est liée, par exemple par surmoulage, à une tête rigide 7 en résine thermodurcissable. (Les cannelures peuvent être remplacées par tout autre usinage).
La tête 7 présente une rainure latérale 8 et une rainure supérieure 9. La face externe de la tête rigide 7, du jonc 1 et d'une partie de la ferrure 5, est munie par surmoulage d'un revêtement en élastomère 10. Ce revêtement définit du côté de la tête 7, une gorge supérieure 19, située en regard de la rainure 9, et une gorge latérale 18, située en regard de la rainure 8. Ces deux gorges, aux dimensions normalisées, sont destinées à recevoir un câble.It comprises a central rod 1 made of glass fibers agglomerated by a resin, one end of which 2 is fixed in a housing 4 of a fitting 5 in the form of a base. Its end 3, provided with at least one groove, is linked, for example by overmolding, to a rigid head 7 of thermosetting resin. (The splines can be replaced by any other machining).
The head 7 has a lateral groove 8 and an upper groove 9. The external face of the rigid head 7, of the rod 1 and of a part of the fitting 5, is provided by overmolding with an elastomer coating 10. This coating defines on the side of the head 7, an upper groove 19, located opposite the groove 9, and a lateral groove 18, located opposite the groove 8. These two grooves, with standardized dimensions, are intended to receive a cable.

Le revêtement 10 illustré comprend les ailettes 11 qui peuvent être de différents profils et de différents diamètres.The coating 10 illustrated comprises the fins 11 which may be of different profiles and of different diameters.

Le diamètre maximal de l'isolateur selon l'invention est compris entre 45 mm et 65 mm, alors que le diamètre de l'isolateur en porcelaine correspondant est de 85 à 130 mm.The maximum diameter of the insulator according to the invention is included between 45 mm and 65 mm, while the diameter of the corresponding porcelain insulator is 85 to 130 mm.

Le poids de l'isolateur selon l'invention est environ trois fois plus faible que celui de l'isolateur en porcelaine directement comparable.The weight of the insulator according to the invention is approximately three times less than that of the directly comparable porcelain insulator.

En ce qui concerne la résistance à la flexion, l'isolateur de la figure 1 a été monté dans une machine de test enregistrant la charge et la flèche correspondante. La norme ANSI exige une résistance à la flexion de 2.800 lbs. Pour cette valeur, la flèche observée est de 28 mm, tandis que pour l'isolateur en porcelaine, elle est de quelques millimètres. Dans le cas de l'isolateur en porcelaine, cette valeur est très proche de la flèche entraînant la rupture de la tête de l'isolateur, tandis que, pour l'isolateur selon l'invention, la rupture intervient seulement lorsque la flèche est de l'ordre de 50 mm correspondant à une charge de 4.300 lbs.With regard to the flexural strength, the insulator of Figure 1 was mounted in a test machine recording the load and the corresponding deflection. The ANSI standard requires a flexural strength of 2,800 lbs. For this value, the deflection observed is 28 mm, while for the porcelain insulator, it is a few millimeters. In the case of the porcelain insulator, this value is very close to the arrow causing the rupture of the head of the insulator, while, for the insulator according to the invention, the rupture occurs only when the arrow is of around 50 mm corresponding to a load of 4,300 lbs.

Le câble logé dans la gorge 19 ou la gorge 18, où il est fixé à l'aide d'une ligature normalisée, repose sur un matelas en élastomère souple qui ne risque pas de l'endommager à la longue.The cable housed in the groove 19 or the groove 18, where it is fixed using a standardized tie, rests on a flexible elastomer mattress which is not liable to damage it in the long run.

Si l'isolateur reçoit des impacts de balles, le choc ne peut entraîner la rupture ou l'éclatement de l'ensemble de la structure, comme cela peut être le cas pour un isolateur en porcelaine.If the insulator receives bullet impacts, the impact cannot cause the whole structure to break or burst, as can be the case for a porcelain insulator.

Les figures 2 à 11 montrent des variantes de réalisation de plusieurs éléments de l'isolateur de la figure 1.Figures 2 to 11 show alternative embodiments of several elements of the insulator of Figure 1.

On voit dans les figures 2, 3, 4 divers revêtements pour le jonc 1. Le revêtement 20 en élastomère (figure 2) est muni d'ailettes ayant toutes la même configuration. Les ailettes du revêtement 21 en élastomère (figure 3) comportent des nervures inférieures 23. Le revêtement 22 (figure 4) est une gaine tubulaire dont le matériau est du type vernis.We see in Figures 2, 3, 4 various coatings for the rod 1. The coating 20 of elastomer (Figure 2) is provided with fins all having the same configuration. The fins of the elastomer coating 21 (Figure 3) have lower ribs 23. The coating 22 (Figure 4) is a tubular sheath whose material is of the varnish type.

Dans la figure 5, le jonc 31 a la forme d'un tronc de cône dont les extrémités sont solidarisées respectivement à une embase métallique 30 et à une tête rigide isolante 40.In FIG. 5, the rod 31 has the shape of a truncated cone, the ends of which are secured respectively to a metal base 30 and to a rigid insulating head 40.

Dans la figure 6 le jonc 32 est un cylindre creux qui peut être éventuellement rempli d'une mousse ou résine isolante 33 (figure 7).In FIG. 6, the rod 32 is a hollow cylinder which can optionally be filled with an insulating foam or resin 33 (FIG. 7).

Dans la figure 8 le jonc 34 est un tronc de cône creux, qui peut également être éventuellement rempli de mousse ou de résine isolante 33 (figure 9).In Figure 8 the rod 34 is a hollow truncated cone, which can may also be filled with foam or insulating resin 33 (Figure 9).

Dans la figure 10 l'isolateur comprend deux joncs 61 et 62 solidarisés parallèlement l'un à l'autre à une embase métallique 50 et à une tête rigide isolante 60. Selon une autre variante, le nombre de joncs peut être supérieur à deux.In FIG. 10, the insulator comprises two rods 61 and 62 secured parallel to one another to a metal base 50 and to a rigid insulating head 60. According to another variant, the number of rods can be greater than two.

Dans la figure 11, un anneau métallique 42 constituant une pièce métallique de raccordement est fixée autour du jonc 41 sous la tête rigide 40. Comme dans les variantes précédentes, les faces exposées du jonc 41 et de la tête 40 sont munies de revêtements étanches 43, 44 qui peuvent être en matériaux différents. La jonction entre ces deux revêtements peut être réalisée par la pièce métallique.In FIG. 11, a metal ring 42 constituting a metallic connecting piece is fixed around the rod 41 under the rigid head 40. As in the preceding variants, the exposed faces of the rod 41 and of the head 40 are provided with waterproof coatings 43 , 44 which may be made of different materials. The junction between these two coatings can be achieved by the metal part.

Bien entendu l'invention n'est pas limitée aux modes de réalisation qui viennent d'être décrits.Of course, the invention is not limited to the embodiments which have just been described.

L'invention s'applique également aux isolateurs rigides à tige venant se fixer dans le jonc central.The invention also applies to rigid rod insulators which are fixed in the central rod.

On a décrit une tête en matériau isolant. On peut également envisager une tête métallique.A head of insulating material has been described. One can also consider a metal head.

Le matériau du revêtement de la tête rigide est choisi de manière à être le plus souple possible.The material for coating the rigid head is chosen so as to be as flexible as possible.

Dans le cas où l'isolateur comporte plusieurs joncs, ces derniers ne sont pas forcément disposés parallèlement les uns aux autres.In the case where the insulator comprises several rods, the latter are not necessarily arranged parallel to each other.

Claims (11)

Isolateur électrique rigide de type à socle ou à tige, dont l'extrémité inférieure est fixée audit socle ou à ladite tige et dont l'extrémité supérieure isolante présente au moins une gorge destinée à recevoir un câble électrique, caractérisé par le fait qu'il comporte au moins un jonc central (1) fixé à sa partie inférieure audit socle (5) ou à ladite tige, et à sa partie supérieure à une tête rigide (7) munie d'au moins une rainure (8), la face externe dudit jonc et de ladite tête rigide étant recouverte de manière étanche par un revêtement (10), celui de ladite tête étant en élastomère souple et celui du jonc étant choisi parmi les élastomères, les résines et les vernis, ladite rainure (8) munie de son revêtement définissant ladite gorge (18).Rigid electrical insulator of the base or rod type, the lower end of which is fixed to the said base or the said rod and the upper insulating end of which has at least one groove intended to receive an electric cable, characterized in that it comprises at least one central rod (1) fixed at its lower part to said base (5) or to said rod, and at its upper part to a rigid head (7) provided with at least one groove (8), the external face said rod and said rigid head being tightly covered by a coating (10), that of said head being made of flexible elastomer and that of the rod being chosen from elastomers, resins and varnishes, said groove (8) provided with its covering defining said groove (18). Isolateur électrique rigide selon la revendication 1, caractérisé par le fait que ledit jonc (1) a une surface extérieure cylindrique.Rigid electrical insulator according to claim 1, characterized in that said rod (1) has a cylindrical outer surface. Isolateur électrique rigide selon la revendication 1, caractérisé par le fait que ledit jonc (31) a une surface extérieure en tronc de cône.Rigid electrical insulator according to claim 1, characterized in that said rod (31) has an outer surface in the form of a truncated cone. Isolateur électrique rigide selon l'une des revendications précédentes, caractérisé par le fait que ledit jonc (32) est creux.Rigid electrical insulator according to one of the preceding claims, characterized in that the said rod (32) is hollow. Isolateur électrique rigide selon la revendication 4, caractérisé par le fait que la cavité interne dudit jonc (34) est remplie d'une mousse ou d'une résine isolante (33).Rigid electrical insulator according to claim 4, characterized in that the internal cavity of said rod (34) is filled with a foam or an insulating resin (33). Isolateur électrique rigide selon l'une des revendications 1 à 5, caractérisé par le fait que l'extrémité (3) du jonc liée à ladite tête rigide présente au moins une cannelure.Rigid electrical insulator according to one of claims 1 to 5, characterized in that the end (3) of the rod connected to said rigid head has at least one groove. Isolateur électrique rigide selon l'une des revendications précédentes, caractérisé par le fait que ladite tête rigide (7) est en un matériau choisi parmi les matériaux thermosplastiques, les matériaux thermodurcissables, les métaux, les céramiques, le verre, la porcelaine.Rigid electrical insulator according to one of the preceding claims, characterized in that the said rigid head (7) is made of a material chosen from thermosplastic materials, thermosetting materials, metals, ceramics, glass, porcelain. Isolateur électrique rigide selon la revendication 7, caractérisé par le fait que ledit matériau de ladite tête rigide (7) est chargé de charges minérales, ou de fibres isolantes ou semi-conductrices.Rigid electrical insulator according to claim 7, characterized in that the said material of the said rigid head (7) is loaded with mineral fillers, or with insulating or semiconductive fibers. Isolateur électrique rigide selon l'une des revendications précédentes, caractérisé par le fait que le matériau du revêtement du jonc est choisi parmi les élastomères vulcanisables, thermoplastiques les vernis, les résines époxy, polyesters, chargées ou non.Rigid electrical insulator according to one of claims above, characterized in that the material of the covering of the rod is chosen from vulcanizable elastomers, thermoplastics, varnishes, epoxy resins, polyesters, loaded or not. Isolateur électrique rigide selon l'une des revendications précédentes, caractérisé par le fait que le matériau souple du revêtement de ladite tête rigide est choisi parmi les élastomères vulcanisables et thermoplastiques.Rigid electrical insulator according to one of the preceding claims, characterized in that the flexible material of the coating of said rigid head is chosen from vulcanizable and thermoplastic elastomers. Isolateur électrique rigide selon l'une des revendications précédentes, caractérisé par le fait qu'il comprend plusieurs joncs (61, 62) disposés parallèlement entre eux.Rigid electrical insulator according to one of the preceding claims, characterized in that it comprises several rods (61, 62) arranged parallel to each other.
EP90122543A 1989-12-01 1990-11-26 Rigid electrical insulator Expired - Lifetime EP0430135B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8915898 1989-12-01
FR8915898A FR2655471B1 (en) 1989-12-01 1989-12-01 RIGID ELECTRICAL INSULATOR.

Publications (2)

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EP0430135A1 true EP0430135A1 (en) 1991-06-05
EP0430135B1 EP0430135B1 (en) 1995-05-10

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ID=9388054

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EP90122543A Expired - Lifetime EP0430135B1 (en) 1989-12-01 1990-11-26 Rigid electrical insulator

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EP (1) EP0430135B1 (en)
JP (1) JP3098026B2 (en)
AT (1) ATE122495T1 (en)
AU (1) AU628766B2 (en)
BR (1) BR9006100A (en)
DE (1) DE69019313T2 (en)
FR (1) FR2655471B1 (en)
NO (1) NO179306C (en)
ZA (1) ZA909649B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5298301A (en) * 1989-10-17 1994-03-29 Raychem Limited Electrical insulator
WO2003081610A1 (en) * 2002-03-22 2003-10-02 Sefag Ag Electric insulators and method for the production thereof
CN103956240A (en) * 2014-04-16 2014-07-30 宁海县雁苍山电力设备厂 Insulation column for power equipment

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2449517A1 (en) * 1979-02-23 1980-09-19 Leon Alfred Ridge tile group mould assembly - with vertical moulding volumes rigidly and dismountably joined at regular intervals
JPH03281212A (en) * 1990-03-30 1991-12-11 Fanuc Ltd Submarine gate of injection mold
DE102010016384A1 (en) * 2010-04-09 2011-12-15 Georg Jordan Gmbh Insulator, in particular for a pantograph of a rail vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE177650C (en) *
DE27870C (en) * CH. CH. HlNSDALE in Cleveland, Ohio, V. St.' A Innovations to telegraph isolators
DE1665746A1 (en) * 1966-09-20 1971-03-25 Siemens Ag Insulating body made of cast resin for high voltage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2317799A (en) * 1941-04-14 1943-04-27 Mycalex Corp Of America Line insulator
DE1932949A1 (en) * 1969-06-28 1971-01-07 Bbc Brown Boveri & Cie High-voltage composite insulator
US3586758A (en) * 1969-11-04 1971-06-22 Chance Co Ab Insulated cantilever standoff conductor support
FR2604821B1 (en) * 1986-10-02 1990-01-12 Ceraver COMPOSITE INSULATOR WITH OVER-MOLDED INSULATING COATING

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE177650C (en) *
DE27870C (en) * CH. CH. HlNSDALE in Cleveland, Ohio, V. St.' A Innovations to telegraph isolators
DE1665746A1 (en) * 1966-09-20 1971-03-25 Siemens Ag Insulating body made of cast resin for high voltage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5298301A (en) * 1989-10-17 1994-03-29 Raychem Limited Electrical insulator
WO2003081610A1 (en) * 2002-03-22 2003-10-02 Sefag Ag Electric insulators and method for the production thereof
CN103956240A (en) * 2014-04-16 2014-07-30 宁海县雁苍山电力设备厂 Insulation column for power equipment

Also Published As

Publication number Publication date
NO905143L (en) 1991-06-03
AU628766B2 (en) 1992-09-17
NO179306C (en) 1996-09-11
FR2655471B1 (en) 1992-02-21
JP3098026B2 (en) 2000-10-10
AU6700190A (en) 1991-06-06
DE69019313T2 (en) 1995-09-21
ZA909649B (en) 1991-09-25
ATE122495T1 (en) 1995-05-15
JPH03210712A (en) 1991-09-13
EP0430135B1 (en) 1995-05-10
NO905143D0 (en) 1990-11-28
NO179306B (en) 1996-06-03
DE69019313D1 (en) 1995-06-14
FR2655471A1 (en) 1991-06-07
BR9006100A (en) 1991-09-24

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