EP0727793B1 - Insulating tape with edges, in particular for transformer, and transformer provided with such insulating tape - Google Patents

Insulating tape with edges, in particular for transformer, and transformer provided with such insulating tape Download PDF

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Publication number
EP0727793B1
EP0727793B1 EP19960400312 EP96400312A EP0727793B1 EP 0727793 B1 EP0727793 B1 EP 0727793B1 EP 19960400312 EP19960400312 EP 19960400312 EP 96400312 A EP96400312 A EP 96400312A EP 0727793 B1 EP0727793 B1 EP 0727793B1
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EP
European Patent Office
Prior art keywords
insulating
edge
insulating strip
notched
transformer
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.)
Expired - Lifetime
Application number
EP19960400312
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German (de)
French (fr)
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EP0727793A1 (en
Inventor
Jean-Luc Scheer
Vasselin
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.)
Legrand SNC
Legrand France SA
Original Assignee
Legrand SA
Legrand SNC
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Publication date
Application filed by Legrand SA, Legrand SNC filed Critical Legrand SA
Publication of EP0727793A1 publication Critical patent/EP0727793A1/en
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Publication of EP0727793B1 publication Critical patent/EP0727793B1/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures

Definitions

  • the present invention relates generally insulating strips of the type used, in particular, in certain transformers, to ensure a dielectric insulation between two windings.
  • This insulating strip which, while being thick relatively weak, is semi-rigid, has, for example, a composite structure, by combining a layer of material synthetic to a layer of paper.
  • the insulating tape can therefore be curved without tearing, it is usual to notch its edges, that is to say to affect at least locally each of these of slots, which, extending generally transversely to count from their edge, delimit notches between them.
  • this insulating tape does not cover the notches thereof along its notched edges.
  • the present invention generally has for subject a provision to the contrary to ensure this dielectric insulation.
  • an insulating strip of the kind of which at least one of the edges is notched, said edge being at least locally affected by slots, which, extending generally transversely from of its edge, delimit notches between them
  • this strip insulator being generally characterized in that, an insulating tape, capable of elongation, being secured, along its notched edge, on at least one of the sides of it, this insulating tape continuously covers its notches, extending across the edge of its edge notched to the root, at least, of the slots therein; it also relates to any transformer comprising at minus one turn of such an insulating strip between two windings.
  • the elongation capacity of the ribbon insulation used according to the invention allows it advantageously to stretch without breaking when the strip insulation is curved, so that despite the spacing of the notches of it, it ensures a solution of continuity between these notches, thus avoiding any leakage of insulation dielectric at their place.
  • these are, for example, to provide dielectric isolation between two windings 10P, 10S within any transformer, the winding 10P being for example a primary winding and the winding 10S a secondary winding.
  • the processor concerned does not fall under its whole of the present invention, only have been shown, and only partially, in FIGS. 4A, 4B, 4C, those of its elements that are necessary for the understanding of the invention.
  • the wire 11P constituting the winding 10P is wound on a carcass 12, which, at one of its ends, at less, and, in practice, to each of these, includes, transversely, one cheek 13.
  • This carcass 12 is usually made of material insulating synthetic.
  • its section transverse is assumed to be quadrangular, and, for example, rectangular.
  • each of the notched edges 15 of the insulating strip 14 is exposed.
  • notched edge 15 is at least locally, and in practical along its entire length, affected by slots 16, which, generally extending transversely from its edge 17, over only a fraction of the width of the assembly, delimit two by two notches 18.
  • the slots 16 are established at a regular pace, parallel to each other others, but this is not always necessarily the case.
  • the slots 16 are joined lips, and their roots 19 are all aligned, at a distance from edge 17, parallel to this one.
  • the ribbon insulator 20 extends on both sides of the edge notched 15 to which it is subject, bypassing continuously tranche 17 of it.
  • the insulating tape 20 extends beyond this root 19 relative to the edge 17, to cover completely, securely, the notches 18.
  • the insulating tape 20 thus implemented according to the invention is, for example, and preferably, a simple tape.
  • this insulating tape 20 must have a elongation coefficient greater than 50%, and, preferably, at least equal to 80%.
  • the first is polyvinyl chloride, and the second in carbon tetrafluoride.
  • the insulating tape 14 itself can traditional be made of a material of the type sold under the commercial designation "MYLAR CELLITE" by the MICEL company.
  • the ribbon insulator 20 used according to the invention is not opposed at the spacing of the notches 18 in line with an edge of the carcass 12.
  • the insulating strip 14 must be rigid enough to avoid that, during its installation, the insulating tape 20, and with it the notched edge 15 to which it is secured, does not inadvertently fold inward the carcass 12, moving away from the relevant cheek 13 thereof, when, in line with an edge of this carcass 12, it is subject to a significant extension effort.
  • this insulating strip 14 is, preferably, at least equal to 0.14 mm.
  • It can for example be equal to 0.20 or 0.25 mm.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)
  • Insulating Bodies (AREA)

Description

La présente invention concerne d'une manière générale les bandes isolantes du type de celles mises en oeuvre, notamment, dans certains transformateurs, pour assurer une isolation diélectrique entre deux enroulements.The present invention relates generally insulating strips of the type used, in particular, in certain transformers, to ensure a dielectric insulation between two windings.

Ces deux enroulements sont bobinés sur une même carcasse, entre les joues que présente celle-ci à ses extrémités.These two windings are wound on the same carcass, between the cheeks that it presents to its extremities.

Après le bobinage d'un premier de ces enroulements, il est usuel de l'enrubanner de plusieurs tours d'une bande isolante, avant de procéder au bobinage du deuxième.After the winding of a first of these windings, it it is usual to wrap several turns of a strip insulating, before proceeding to the winding of the second.

Cette bande isolante, qui, tout en étant d'épaisseur relativement faible, est semi-rigide, a, par exemple, une structure composite, en associant une couche de matière synthétique à une couche de papier.This insulating strip, which, while being thick relatively weak, is semi-rigid, has, for example, a composite structure, by combining a layer of material synthetic to a layer of paper.

Quoi qu'il en soit, elle doit être pliée à l'équerre au contact de chacune des joues de la carcasse, pour assurer à cet endroit la continuité de l'isolation diélectrique.Anyway, it should be bent square in contact with each of the cheeks of the carcass, to ensure at this point the continuity of the dielectric insulation.

Elle doit conjointement pouvoir suivre la courbure de la carcasse, soit continûment, s'il s'agit d'une carcasse de section transversale circulaire, soit ponctuellement, le long des arêtes de cette carcasse, s'il s'agit d'une carcasse de section transversale polygonale, et, par exemple, rectangulaire.It must jointly be able to follow the curvature of the carcass, or continuously, if it is a carcass of circular cross section, either punctually, along edges of this carcass, if it is a carcass of polygonal cross section, and, for example, rectangular.

Pour que la bande isolante puisse en conséquence être cintrée sans se déchirer, il est usuel de cranter ses bords, c'est-à-dire d'affecter au moins localement chacun de ceux-ci de fentes, qui, s'étendant globalement transversalement à compter de leur tranche, délimitent entre elles des crans.So that the insulating tape can therefore be curved without tearing, it is usual to notch its edges, that is to say to affect at least locally each of these of slots, which, extending generally transversely to count from their edge, delimit notches between them.

Cette disposition donne satisfaction, mais elle a pour inconvénient de pouvoir être éventuellement à l'origine de fuites, si, sous l'effet conjugué de l'écartement des crans et du chevauchement de ceux-ci, notamment dans les angles, les fentes de tours successifs viennent malencontreusement à plus ou moins coïncider.This provision is satisfactory, but its purpose is disadvantage of being able to possibly be at the origin of leaks, if, under the combined effect of the spacing of the notches and overlapping them, especially in the corners, successive round slots unfortunately come to more or less coincide.

Pour minimiser ce risque, les réglementations normatives en la matière imposent de prévoir un tour supplémentaire, ce qui en pratique conduit à ce jour à enrouler sur au moins quatre tours la bande isolante mise en oeuvre.To minimize this risk, regulations normative in the matter impose to plan a tour additional, which in practice has led to date to wind over at least four turns the insulating tape used.

Il n'est pas rare, cependant, que, même dans ces conditions, les essais d'isolation diélectrique à satisfaire, nécessairement effectués à une tension élevée, par exemple 4000 volts, n'aboutissent à un claquage.It is not uncommon, however, that even in these conditions, the dielectric insulation tests to be satisfied, necessarily performed at high voltage, for example 4000 volts, do not result in a breakdown.

Dans le brevet américain No 3 533 037, il est superposé, à la bande isolante, un ruban isolant, susceptible d'allongement, qui, formé d'un ruban adhésif double face, n'intervient en pratique que pour la seule fixation de cette bande isolante.In U.S. Patent No. 3,533,037, it is superimposed, on the insulating strip, an insulating tape, susceptible elongation, which, formed of a double-sided adhesive tape, only intervenes in practice for the sole fixation of this insulating tape.

De largeur inférieure à celle de la bande isolante, ce ruban isolant ne recouvre pas les crans de celle-ci le long de ses bords crantés.Of width less than that of the insulating strip, this insulating tape does not cover the notches thereof along its notched edges.

Il n'est donc pas en mesure d'assurer par lui-même toute l'isolation diélectrique nécessaire.He is therefore unable to insure by himself all necessary dielectric insulation.

La présente invention a d'une manière générale pour objet une disposition permettant au contraire d'assurer cette isolation diélectrique.The present invention generally has for subject a provision to the contrary to ensure this dielectric insulation.

De manière plus précise, elle a tout d'abord pour objet une bande isolante, du genre dont l'un au moins des bords est cranté, ledit bord étant au moins localement affecté de fentes, qui, s'étendant globalement transversalement à compter de sa tranche, délimitent des crans entre elles, cette bande isolante étant d'une manière générale caractérisée en ce que, un ruban isolant, susceptible d'allongement, lui étant assujetti, le long de son bord cranté, sur l'une au moins des faces de celui-ci, ce ruban isolant recouvre en continu ses crans, en s'étendant en largeur de la tranche de son bord cranté jusqu'à la racine, au moins, des fentes de celui-ci ; elle a encore pour objet tout transformateur comportant au moins un tour d'une telle bande isolante entre deux enroulements.More precisely, it has first of all for object an insulating strip, of the kind of which at least one of the edges is notched, said edge being at least locally affected by slots, which, extending generally transversely from of its edge, delimit notches between them, this strip insulator being generally characterized in that, an insulating tape, capable of elongation, being secured, along its notched edge, on at least one of the sides of it, this insulating tape continuously covers its notches, extending across the edge of its edge notched to the root, at least, of the slots therein; it also relates to any transformer comprising at minus one turn of such an insulating strip between two windings.

En pratique, la capacité d'allongement du ruban isolant mis en oeuvre suivant l'invention lui permet avantageusement de s'étirer sans rupture lorsque la bande isolante est cintrée, en sorte que, malgré l'écartement des crans de celle-ci, il assure une solution de continuité entre ces crans, en évitant ainsi toute fuite d'isolation diélectrique à leur endroit.In practice, the elongation capacity of the ribbon insulation used according to the invention allows it advantageously to stretch without breaking when the strip insulation is curved, so that despite the spacing of the notches of it, it ensures a solution of continuity between these notches, thus avoiding any leakage of insulation dielectric at their place.

Il s'agit par exemple d'un simple ruban adhésif.It is for example a simple adhesive tape.

Les objets de l'invention, leurs caractéristiques et leurs avantages, ressortiront d'ailleurs de la description qui va suivre, à titre d'exemple, en référence aux dessins schématiques annexés sur lesquels :

  • la figure 1 est une vue partielle en plan d'une bande isolante de l'art antérieur ;
  • la figure 2 est, avec un arrachement local, une vue partielle en plan d'une bande isolante suivant l'invention ;
  • la figure 3 est, à échelle supérieure, une vue partielle en coupe transversale de cette bande isolante, suivant la ligne III-III de la figure 2 ;
  • les figures 4A, 4B, 4C sont des vues partielles en perspective illustrant la mise en oeuvre de cette bande isolante dans un transformateur, avec un arrachement local pour la figure 4B.
    • The objects of the invention, their characteristics and their advantages will appear from the description which follows, by way of example, with reference to the appended schematic drawings in which:
  • Figure 1 is a partial plan view of an insulating strip of the prior art;
  • Figure 2 is, with a cutaway, a partial plan view of an insulating strip according to the invention;
  • Figure 3 is, on a larger scale, a partial cross-sectional view of this insulating strip, along line III-III of Figure 2;
  • Figures 4A, 4B, 4C are partial perspective views illustrating the implementation of this insulating strip in a transformer, with a local cutaway for Figure 4B.

    • Tel qu'illustré sur les figures 4A, 4B, 4C, il s'agit, par exemple, d'assurer une isolation diélectrique entre deux enroulements 10P, 10S au sein d'un quelconque transformateur, l'enroulement 10P étant par exemple un enroulement primaire et l'enroulement 10S un enroulement secondaire.As illustrated in FIGS. 4A, 4B, 4C, these are, for example, to provide dielectric isolation between two windings 10P, 10S within any transformer, the winding 10P being for example a primary winding and the winding 10S a secondary winding.

    Le transformateur concerné ne relevant pas dans sa totalité de la présente invention, seuls ont été représentés, et seulement en partie, sur les figures 4A, 4B, 4C, ceux de ses éléments qui sont nécessaires à la compréhension de l'invention.The processor concerned does not fall under its whole of the present invention, only have been shown, and only partially, in FIGS. 4A, 4B, 4C, those of its elements that are necessary for the understanding of the invention.

    De manière connue en soi, et tel que schématisé sur la figure 4A, le fil llP constitutif de l'enroulement 10P est bobiné sur une carcasse 12, qui, à l'une de ses extrémités, au moins, et, en pratique, à chacune de celles-ci, comporte, transversalement, une joue 13.In a manner known per se, and as shown schematically on the FIG. 4A, the wire 11P constituting the winding 10P is wound on a carcass 12, which, at one of its ends, at less, and, in practice, to each of these, includes, transversely, one cheek 13.

    Cette carcasse 12 est usuellement en matière synthétique isolante.This carcass 12 is usually made of material insulating synthetic.

    Dans la forme de réalisation représentée, sa section transversale est supposée être quadrangulaire, et, par exemple, rectangulaire.In the embodiment shown, its section transverse is assumed to be quadrangular, and, for example, rectangular.

    Mais elle pourrait tout aussi bien être circulaire.But it could just as easily be circular.

    Il en est de même pour le contour de la joue 13.It is the same for the cheek contour 13.

    Tel que schématisé sur la figure 4B, il est usuel d'enrubanner, ensuite, suivant un ou plusieurs tours, sur l'enroulement 10P, une bande isolante 14, dont l'un au moins des bords 15, et en pratique chacun de ceux-ci, est cranté, pour pouvoir être plié à l'équerre au contact de la joue 13 correspondante de la carcasse 12 tout en suivant la courbure de cette dernière.As shown schematically in Figure 4B, it is usual to wrap, then, in one or more turns, on winding 10P, an insulating strip 14, at least one of which edges 15, and in practice each of these is notched, to be able to be bent at right angles to the cheek 13 corresponding to the carcass 12 while following the curvature of the latter.

    C'est seulement ensuite que, tel que schématisé sur la figure 4C, le fil 11S constitutif de l'enroulement 10S est à son tour bobiné.It is only then that, as shown schematically on the FIG. 4C, the wire 11S constituting the winding 10S is at his turn wound.

    A ce jour, et tel que représenté sur la figure 1, chacun des bords crantés 15 de la bande isolante 14 est à nu.To date, and as shown in FIG. 1, each of the notched edges 15 of the insulating strip 14 is exposed.

    Un tel bord cranté 15 est au moins localement, et en pratique sur toute sa longueur, affecté de fentes 16, qui, s'étendant globalement transversalement à compter de sa tranche 17, sur une fraction seulement de la largeur de l'ensemble, délimitent deux à deux entre elles des crans 18.Such a notched edge 15 is at least locally, and in practical along its entire length, affected by slots 16, which, generally extending transversely from its edge 17, over only a fraction of the width of the assembly, delimit two by two notches 18.

    Dans la forme de réalisation représentée, les fentes 16 sont établies à un pas régulier, parallèlement les unes aux autres, mais il n'en est pas toujours obligatoirement ainsi.In the embodiment shown, the slots 16 are established at a regular pace, parallel to each other others, but this is not always necessarily the case.

    En outre, dans la forme de réalisation représentée, les fentes 16 sont à lèvres jointives, et leurs racines 19 sont toutes alignées, à distance de la tranche 17, parallèlement à celle-ci.Furthermore, in the embodiment shown, the slots 16 are joined lips, and their roots 19 are all aligned, at a distance from edge 17, parallel to this one.

    Tel que représenté sur les figures 2 et 3, le long de l'un au moins des bords crantés 15 de la bande isolante 14, et, en pratique, le long de chacun de ceux-ci, se trouve assujetti, suivant l'invention, sur l'une au moins des faces d'un tel bord cranté 15, un ruban isolant 20, qui recouvre en continu ses crans 18, et qui est susceptible d'allongement.As shown in Figures 2 and 3, along at least one of the notched edges 15 of the insulating strip 14, and, in practice, along each of these, is subject, according to the invention, on at least one of the faces of such an edge notched 15, an insulating tape 20, which continuously covers its notches 18, and which is susceptible to elongation.

    Les bords crantés 15 de la bande isolante 14 suivant l'invention sont ainsi "bordés".The notched edges 15 of the following insulating strip 14 the invention are thus "bordered".

    Dans la forme de réalisation représentée, le ruban isolant 20 s'étend sur l'une et l'autre des deux faces du bord cranté 15 auquel il est assujetti, en contournant en continu la tranche 17 de celui-ci.In the embodiment shown, the ribbon insulator 20 extends on both sides of the edge notched 15 to which it is subject, bypassing continuously tranche 17 of it.

    Il s'étend, en largeur, de cette tranche 17 jusqu'à la racine 19, au moins, des fentes 16.It extends in width from this section 17 to the root 19, at least, of the slots 16.

    En pratique, le ruban isolant 20 s'étend au-delà de cette racine 19 par rapport à la tranche 17, pour recouvrir complètement, en toute sûreté, les crans 18.In practice, the insulating tape 20 extends beyond this root 19 relative to the edge 17, to cover completely, securely, the notches 18.

    Le ruban isolant 20 ainsi mis en oeuvre suivant l'invention est, par exemple, et préférentiellement, un simple ruban adhésif.The insulating tape 20 thus implemented according to the invention is, for example, and preferably, a simple tape.

    Autrement dit, son assujettissement à un bord cranté 15 de la bande isolante 14 résulte du simple collage assuré par le matériau adhésif qu'il porte sur l'une de ses faces.In other words, its subjection to a notched edge 15 of the insulating strip 14 results from the simple bonding provided by the adhesive material it wears on one of its faces.

    En pratique, ce ruban isolant 20 doit avoir un coefficient d'allongement supérieur à 50 %, et, préférentiellement, au moins égal à 80 %.In practice, this insulating tape 20 must have a elongation coefficient greater than 50%, and, preferably, at least equal to 80%.

    A titre indicatif, et sans qu'il puisse en résulter une quelconque limitation pour l'invention, il peut être précisé que le ruban adhésif vendu sous la référence 6150 par la Société BARNIER et celui vendu sous la référence 7510 par la Société PPI donnent satisfaction.As an indication, and without it being able to result from it any limitation for the invention it may be specified that the adhesive tape sold under the reference 6150 by the company BARNIER and the one sold under the reference 7510 by the PPI Company give satisfaction.

    Le premier est en polychlorure de vinyle, et le deuxième en tétrafluorure de carbone.The first is polyvinyl chloride, and the second in carbon tetrafluoride.

    La bande isolante 14 elle-même peut de manière traditionnelle être réalisée en un matériau du type de celui vendu sous la désignation commerciale "MYLAR CELLITE" par la Société MICEL.The insulating tape 14 itself can traditional be made of a material of the type sold under the commercial designation "MYLAR CELLITE" by the MICEL company.

    Il s'agit d'un matériau de structure composite, associant à une couche en matière synthétique une couche en papier.It is a composite structure material, combining a layer of synthetic material with a layer of paper.

    Ainsi que l'illustrent les figures 4B et 4C, le ruban isolant 20 mis en oeuvre suivant l'invention ne s'oppose pas à l'écartement des crans 18 au droit d'une arête de la carcasse 12.As illustrated in Figures 4B and 4C, the ribbon insulator 20 used according to the invention is not opposed at the spacing of the notches 18 in line with an edge of the carcass 12.

    Il s'étire simplement entre ces crans 18, tout en assurant la continuité recherchée entre ceux-ci. It simply stretches between these notches 18, while ensuring the desired continuity between them.

    Préférentiellement, la bande isolante 14 doit être assez rigide pour éviter que, lors de sa mise en place, le ruban isolant 20, et avec lui le bord cranté 15 auquel il est assujetti, ne se replie intempestivement vers l'intérieur de la carcasse 12, en s'écartant de la joue 13 concernée de celle-ci, lorsque, au droit d'une arête de cette carcasse 12, il est soumis à un effort d'allongement non négligeable.Preferably, the insulating strip 14 must be rigid enough to avoid that, during its installation, the insulating tape 20, and with it the notched edge 15 to which it is secured, does not inadvertently fold inward the carcass 12, moving away from the relevant cheek 13 thereof, when, in line with an edge of this carcass 12, it is subject to a significant extension effort.

    Pour ce faire, l'épaisseur de cette bande isolante 14 est, préférentiellement, au moins égale à 0,14 mm.To do this, the thickness of this insulating strip 14 is, preferably, at least equal to 0.14 mm.

    Elle peut par exemple être égale à 0,20 ou 0,25 mm.It can for example be equal to 0.20 or 0.25 mm.

    Bien entendu, la présente invention ne se limite pas à la forme de réalisation et à la forme de mise en oeuvre décrites et représentées, mais englobe toute variante d'exécution.Of course, the present invention is not limited to the embodiment and to the form of implementation described and represented, but includes any variant of execution.

    Claims (8)

    1. An insulating strip, in particular for a transformer, of the kind in which one at least of the edges (15) is notched, said edge (15) being at least locally provided with slits (16) which, extending generally transversely from its edge face (17), delimit tongue portions (18) between them, characterised in that, an insulating band (20) capable of elongation being fixed thereto along its notched edge (15) on one at least of the faces thereof, said insulating band (20) continuously covers its tongue portions (18), extending in respect of width from the edge face (17) of the notched edge (15) to the base (19) at least of the slits (16) therein.
    2. An insulating strip according to claim 1 characterised in that the insulating band (20) extends beyond the bases (19) of the slits (16) of the notched edge (15).
    3. An insulating strip according to either one of claims 1 and 2 characterised in that the insulating band (20) has a coefficient of elongation of greater than 50%.
    4. An insulating strip according to claim 3 characterised in that the insulating band (20) has a coefficient of elongation of greater than 80%.
    5. An insulating strip according to any one of claims 1 to 4 characterised in that the insulating band (20) extends over both of the faces of the notched edge (15), passing continuously around the edge face (17) thereof.
    6. An insulating strip according to any one of claims 1 to 5 characterised in that the insulating band (20) is an adhesive band.
    7. An insulating strip according to any one of claims 1 to 6 characterised in that the thickness thereof is at least equal to 0.14 mm.
    8. A transformer of the kind comprising at least one turn of insulating strip between two windings, characterised in that said insulating strip (14) is in accordance with any one of claims 1 to 7.
    EP19960400312 1995-02-16 1996-02-15 Insulating tape with edges, in particular for transformer, and transformer provided with such insulating tape Expired - Lifetime EP0727793B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9501780 1995-02-16
    FR9501780A FR2730848B1 (en) 1995-02-16 1995-02-16 INSULATING TAPE WITH ROPE AND EDGED EDGES, PARTICULARLY FOR A TRANSFORMER, AND TRANSFORMER COMPRISING SUCH AN INSULATING TAPE

    Publications (2)

    Publication Number Publication Date
    EP0727793A1 EP0727793A1 (en) 1996-08-21
    EP0727793B1 true EP0727793B1 (en) 2000-05-10

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    Application Number Title Priority Date Filing Date
    EP19960400312 Expired - Lifetime EP0727793B1 (en) 1995-02-16 1996-02-15 Insulating tape with edges, in particular for transformer, and transformer provided with such insulating tape

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    EP (1) EP0727793B1 (en)
    DE (1) DE69608151T2 (en)
    ES (1) ES2146845T3 (en)
    FR (1) FR2730848B1 (en)

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    ITUB20156089A1 (en) * 2015-12-02 2017-06-02 Itacoil S R L Insulating tape for electrical components

    Family Cites Families (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US3533037A (en) * 1968-08-30 1970-10-06 Motorola Inc Transformer coils with dielectric insertion

    Also Published As

    Publication number Publication date
    DE69608151D1 (en) 2000-06-15
    DE69608151T2 (en) 2000-09-28
    ES2146845T3 (en) 2000-08-16
    FR2730848B1 (en) 1997-04-25
    FR2730848A1 (en) 1996-08-23
    EP0727793A1 (en) 1996-08-21

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