EP2923362B1 - Fil verni - Google Patents

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Publication number
EP2923362B1
EP2923362B1 EP13783319.0A EP13783319A EP2923362B1 EP 2923362 B1 EP2923362 B1 EP 2923362B1 EP 13783319 A EP13783319 A EP 13783319A EP 2923362 B1 EP2923362 B1 EP 2923362B1
Authority
EP
European Patent Office
Prior art keywords
nanofiller
platelets
winding wire
wire
enameled
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.)
Active
Application number
EP13783319.0A
Other languages
German (de)
English (en)
Other versions
EP2923362A1 (fr
Inventor
Roxana Haase
Johann Reicher
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.)
Schwering and Hasse Elektrodraht GmbH
Original Assignee
Schwering and Hasse Elektrodraht GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schwering and Hasse Elektrodraht GmbH filed Critical Schwering and Hasse Elektrodraht GmbH
Publication of EP2923362A1 publication Critical patent/EP2923362A1/fr
Application granted granted Critical
Publication of EP2923362B1 publication Critical patent/EP2923362B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/308—Wires with resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/002—Inhomogeneous material in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2927—Rod, strand, filament or fiber including structurally defined particulate matter

Definitions

  • the invention relates to an enameled wire, in particular enamelled copper wire or aluminum enameled wire.
  • Copper enameled wires and / or aluminum enameled wires are basically known in practice. These enamelled wires are used in electrical machines for generating electric fields. For this purpose, a plurality of windings of the enameled wire are arranged, for example, in a groove. The efficiency of the machines known from practice depends on the available utilization of the groove surface and the proportion of the active surface (groove fill factor). In order to achieve the necessary electrical strength, the enameled wires are covered with an insulating layer. In the case of the enamel-insulated wires known from practice, the insulation layer must have a prescribed minimum thickness in order to achieve the required electrical properties, such as, for example, dielectric strength. The prescribed minimum layer thickness is thus one of the limiting factors for achieving higher groove fill factors.
  • the invention is therefore based on the technical problem of specifying an enameled wire of the type described above, which is characterized by an advantageous thin insulating layer with which a groove surface is optimally exploitable and with which the fill factors known from practice can be improved. Furthermore, the invention has the technical problem of providing a method for producing an enameled wire, which is characterized by a simple feasibility and high environmental compatibility and energy efficiency.
  • the invention teaches an enameled wire, in particular enamelled copper wire or aluminum enameled wire, wherein a surface of a reeling wire forming a core of the enameled wire is completely or substantially completely coated with an electroinsulating lacquer of at least one lacquer polymer, the electroinsulating lacquer containing at least one nanofiller, wherein the nanofiller is formed by a plurality of platelets, wherein a platelet cladding formed by the nanofiller preferably surrounds the winding wire completely or substantially completely.
  • the enameled wire can be used in winding bodies, for example in electrical machines for generating electric fields.
  • the winding wire consists essentially or completely of copper or aluminum.
  • the use of any electrically conductive materials, preferably metals as a winding wire is possible.
  • the lacquer polymer is preferably a matrix in which the nanofiller or the platelets are arranged.
  • the platelets or the nanofiller is particularly preferably arranged exclusively in the polymer matrix.
  • the platelets have a uniform or substantially uniform orientation. It is recommended that parallel or substantially parallel to the winding wire oriented surfaces of the platelets of a platelet layer in a preferably cylindrical outer surface.
  • the platelets are preferably arranged without overlapping or substantially without overlapping along a longitudinal axis of the winding wire in the platelet jacket and / or the platelets are preferably arranged without overlapping or substantially without overlapping the winding wire circumferentially in the platelet jacket. It is recommended that adjacent platelets are arranged in a platelet jacket spaced from each other. In one embodiment, adjacent platelets collide directly to each other, wherein it is possible that in some areas a preferably filled with the lacquer polymer free space between adjacent plates is formed. It is recommended that at least two platelet coats and preferably at least three platelet coats surround the winding wire.
  • the at least two platelet coats are advantageously arranged offset relative to one another around the winding wire such that platelets of an outer platelet layer are positioned in the radial direction above platelet spaces, which platelet spaces are formed between adjacent platelets of an inner platelet layer.
  • at least two platelet shells or the inner platelet jacket and the outer platelet jacket preferably form a gap-free or substantially gap-free jacket around the winding wire in their projection onto the winding wire.
  • the platelets are arranged in a polymer matrix arranged by the lacquer polymer. It is possible that at least a portion of the platelets rests directly on the winding wire.
  • the platelets are for the most part and particularly preferably completely embedded in the polymer matrix such that lacquer polymer is arranged between the platelets and the winding wire.
  • an aspect ratio of the nanofiller or platelets is preferably greater than 100.
  • the aspect ratio means in particular the ratio of the lateral extent of the platelets to the thickness of the platelets. Lateral expansion is preferably the longest possible chord through a cross-sectional area of a platelet. For example, for a platelet having a circular cross-sectional area, the lateral extent is the diameter of the circular cross-sectional area of the platelet.
  • the thickness of a platelet is oriented transversely to the cross-sectional area in the context of the invention.
  • the aspect ratio is greater than 1000. According to a Embodiment, the aspect ratio is 500 to 1000, preferably 100 to 5000 and particularly preferably 100 to 10,000.
  • the platelets have a thickness of up to a maximum of 20 nm. It is recommended that the platelets have a thickness of a few nanometers, for example from 1 to 15 nm, preferably from 1 to 10 nm and particularly preferably up to 5 nm.
  • the platelets have a lateral extent of at least 100 nm. It is possible that the platelets have a lateral extent of at least 300 nm, and preferably of at least 500 nm. According to a preferred embodiment, the lateral diameter of the platelets is approximately 100 to 100,000 nm and preferably 100 to 50,000 nm.
  • the nanofiller is a layered silicate.
  • a mixture of different sheet silicates is used as nanofiller.
  • the flakes preferably consist of the layered silicate or essentially of the layered silicate.
  • platelets of different sheet silicates are contained in the electrical insulating varnish. Particularly preferably, the platelets are obtainable by exfoliation.
  • the phyllosilicate is expediently at least one component selected from the group "talc, hectorite, montmorillonite, bentonite". It is within the scope of the invention that the nanofiller consists essentially of any layered silicate.
  • an organically modified sheet silicate contains at least one preferably cationic surfactant.
  • the organically modified phyllosilicate is obtainable, for example, by ion exchange, embedded in the phyllosilicate Cations are exchanged by the preferably cationic surfactant.
  • cationic surfactants for example, ammonium, sulfonium or phosphonium salts can be used. Preference is given to ammonium salts, in particular quaternary ammonium salts of the following general formula: wherein R 1 to R 4 are organic radicals selected from the group "alkyl, acyl, aryl, arylalkyl, ester or fatty acid groups" represent.
  • the radicals R 1 , R 2 , R 3 and R 4 may be the same or different.
  • the anion X- may be an inorganic or organic anion, for example Cl - , methyl sulfonate CH 3 OSO 3 - act.
  • An example of a surfactant is given in the following formula:
  • n is a natural number between 0 and 20.
  • the electrical insulating lacquer contains up to 10% by volume of the nanofiller.
  • the percentages by volume relate to the volume of the electrical insulating varnish with the nanofiller contained therein.
  • the electrosolier lacquer expediently contains 0.5 to 8% by volume, preferably 1 to 7% by volume and particularly preferably 1 to 5% by volume of the nanofiller.
  • the ratio of the diameter of the winding wire to the square of the thickness of the Elektroisolierlacks is greater than or equal to 1.0 microns -1 .
  • the ratio of the diameter of the winding wire to the square of the thickness of the Elektroisolierlacks is greater than or equal to 2.5 microns -1 , preferably greater than or equal to 3.5 microns -1 and more preferably greater than or equal to 4.2 microns -1 .
  • the ratio of the thickness of the winding wire to the square of the thickness of the electrically insulating lacquer is at least 5.1 ⁇ m -1 , preferably at least 6.3 ⁇ m -1 and according to one embodiment at least 8.1 ⁇ m -1 .
  • the ratio of the diameter of the winding wire to the square of the thickness of the Elektroisolierlacks is at least 4.2 microns -1 , when the diameter of the winding wire is preferably between 100 .mu.m and 1000 .mu.m.
  • the ratio of the thickness of the winding wire to the square of the thickness of the electrically insulating lacquer is more than 8.1 ⁇ m -1 , when the winding wire has a thickness of preferably more than 1000 ⁇ m.
  • the winding wire has a diameter of at least 100 .mu.m, preferably of at least 150 .mu.m and more preferably of at least 200 .mu.m.
  • the thickness of the Elektroisolierlacks is according to a preferred embodiment, at least 3.5 microns.
  • the electrical insulating lacquer is formed by at least two, advantageously identical or substantially identical, electrically insulating lacquer layers. It is possible that the electrical insulating lacquer is formed from more than two or a plurality of Elektroisolierlack Anlagenen.
  • An electrical insulating lacquer layer contains at least the lacquer polymer and the nanofiller. It is within the scope of the invention that at least one further, preferably different from the Elektroisolierlack layer is disposed on the Elektroisolierlack.
  • the lacquer polymer expediently comprises at least one component selected from the group "polyester, polyesterimide, polyamideimide, polyimide, polyurethane, polyesteramideimide, polyamide, polyvinylformal".
  • the polyester is a THEIC polyester.
  • the polyesterimide may be a THEIC polyesterimide.
  • Theic means in the context of the invention, especially tris-hydroxyethyl isocyanurates.
  • the polyamide is an aliphatic and / or aromatic polyamide.
  • the polyamide may be a polyamide having aliphatic structural units and / or aromatic structural units. It is within the scope of the invention that the lacquer polymer has modifying units.
  • the polyester may contain THEIC modifier units or non-polar alkyl chains (end group modification).
  • the polyesterimide can be THEIC-modified.
  • the polyurethane can z. B. be isocyanurate, silane or siloxane-modified.
  • polyamide or polyamide-imide it is possible, for example, to use polytetrafluoroethylene (PTFE) or siloxanes, preferably polysiloxanes, in particular polydimethylsiloxanes, as modifying units.
  • PTFE polytetrafluoroethylene
  • siloxanes preferably polysiloxanes, in particular polydimethylsiloxanes, as modifying units.
  • at least one further functional layer is arranged on an outer side or the outer surface of the electrically insulating varnish. By the arranged on the outer surface functional layer, for example, the sliding behavior of the enameled wire is optimized.
  • a sliding layer is disposed on the outer surface of the electrical insulating varnish.
  • a friction coefficient of the sliding layer is preferably smaller than a friction coefficient of the electrical insulating varnish. In this way, it is ensured that in the production of a wound body from the enameled wire, a better utilization of space takes place.
  • the invention for solving the technical problem teaches a method for producing an enameled wire, wherein a nanofiller comprising a multiplicity of flakes in a lacquer polymer and / or lacquer polymer precursor wherein a winding wire is coated with a coating of the lacquer polymer with the nanofiller dispersed therein and / or of the lacquer polymer precursor with the nanofiller dispersed therein, wherein the coiled wire coated with the coating is passed through a lacquering nozzle such that the platelets of the nanofiller form a platelet coat surrounding the winding wire, wherein the coating is cured on the winding wire to form a Elektroisolierlacks preferably by heating.
  • a jacket is expediently formed on the winding wire in the electrical insulating varnish, which jacket comprises a plurality of platelet coats.
  • Lacquer polymer precursors are, for example, polymerizable compounds from which a lacquer polymer can be synthesized.
  • the winding wire is cleaned prior to application of the nanofiller-containing paint polymer and / or the nanofiller-containing paint polymer precursor. It is within the scope of the invention that the winding wire is passed through a glow for cleaning.
  • annealing means, in particular, a pipe flooded with water vapor.
  • the layer of the Elektroisolierlack is formed on the winding wire by, for example, a wet paint is preferably applied to the winding wire in a paint bath.
  • the wet paint may be formed from the paint polymer with the nanofiller dispersed particularly preferably homogeneously in the paint polymer and at least one solvent.
  • the lacquer polymer or the nanoparticle-containing lacquer polymer precursor comprising the nanofiller is preferably applied to the winding wire in a solvent-free manner.
  • excess, received by the winding wire wet paint or absorbed, containing the nanofiller lacquer polymer or absorbed, the nanofiller-containing lacquer polymer precursor in the invention by means of the lacquer nozzle of stripped off the winding wire.
  • alignment of the nanofiller or the platelets of the nanofiller along the winding wire is promoted by the application process of the wet paint or of the nanofiller-containing paint polymer or of the nanofiller-containing paint polymer precursor via the coating nozzle and the preferably laminar flows and shear forces that occur.
  • the platelets of the nanofiller or the nanofiller are aligned by guiding the winding wire coated with the wet paint or the platelet-containing paint polymer or the platelet-containing paint polymer precursors such that the nanofill or the platelets of the nanofiller form or form a platelet coat Platelet surrounds the winding wire.
  • the platelet jacket formed by the nanofiller surrounds the winding wire completely or essentially completely.
  • the platelets of the nanofiller are arranged without overlap in the platelet coat around the winding wire.
  • the platelets are preferably aligned with the proviso that a jacket formed by a plurality of platelet coats is formed, in which jacket the platelets are preferably arranged offset relative to one another or in a brick structure.
  • the coated with the wet paint or with the nanofiller lacquer polymer or coating polymer precursor coated wire is heated, preferably in the wet paint containing solvent removed and / or the lacquer polymer or the lacquer polymer precursor is polymerized.
  • the lacquer polymer is expediently obtained by, for example, a heat-induced reaction of the lacquer polymer precursors.
  • the arranged on the winding wire Elektroisolierlack is formed from a plurality or plurality of layers of the Elektroisolierlack or Elektroisolierlack harshen.
  • a further coating is particularly preferably arranged on the winding wire or on an electrical insulating varnish layer already located on the winding wire.
  • the invention is based on the finding that an enameled wire according to the invention is distinguished by an advantageously small thickness of an electrical insulating lacquer applied to the winding wire.
  • an enameled wire according to the invention compared to the prior art, significantly improved slot-filling factors can be achieved in the production of wound bodies from the enameled wire according to the invention.
  • Essential here is the reduction of the layer thickness of the Elektroisolierlacks, which is only 20 to 80% of the known from practice layer thicknesses of Elektroisolierlacken in the enameled wire according to the invention.
  • the inventive method is characterized by the low material use by an environmentally friendly, low emissions causing low solvent consumption in the production of the enameled wire. Due to the fact that only a small number of different electrical insulating lacquer layers are required for the formation of the enameled wire according to the invention, the method according to the invention is characterized by low energy consumption and the enameled wire according to the invention by high sustainability.
  • a paint wire 1 which contains a winding wire 2, which winding wire 2 is made in the embodiment of copper.
  • the winding wire has a diameter of 200 microns.
  • the winding wire 2 forms a core of the enameled wire 1.
  • the reeling wire 2 is completely coated with an electroinsulating lacquer 3 which contains an insulator lacquer matrix of a lacquer polymer 4 and a nanofiller in the form of a multiplicity of platelets 5.
  • the platelets 5 form according to the embodiment and Fig. 1 a jacket, which shell of three platelet coats 8a, 8b, 8c is formed and the winding wire 2 completely surrounds.
  • Fig. 1 a jacket, which shell of three platelet coats 8a, 8b, 8c is formed and the winding wire 2 completely surrounds.
  • the platelets 5 of the nanofiller are embedded in a matrix formed by the lacquer polymer 4. Furthermore, in the Fig. 1 It can be seen that the platelets in the platelet sheaths 8a, 8b, 8c are arranged without overlapping around the core of the enameled wire 1 or around the winding wire 2. The platelets 5 in the platelet coats 8a, 8b, 8c are arranged around the winding wire 2 in such a way that adjacent platelets 5a, 5b do not overlap one another.
  • Fig. 2 schematically the application of the Elektroisolierlacks 3 is shown on the winding wire 2.
  • the winding wire 2 is passed through a reservoir 6, in which reservoir 6, the lacquer polymer 4 is kept in stock.
  • the platelets 5 of the nanofiller are homogeneously dispersed.
  • the winding wire 2 is coated with the coating polymer 4 contained in the platelets 5.
  • the promotion of the winding wire 2 by a Lackierdüse 7 takes place such that the occurring currents and shear forces cause alignment of the platelets 5 along the winding wire 2, so that the platelets 5 are brick-like arranged around the winding wire 2.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulated Conductors (AREA)
  • Organic Insulating Materials (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Claims (10)

  1. Fil émaillé, en particulier fil émaillé en cuivre ou fil émaillé en aluminium, une surface d'un fil torsadé (2) formant une âme de fil émaillé (1) étant revêtue complètement ou pour l'essentiel complètement d'un émaillé électro-isolant (3) composé au moins d'un polymère émaillé (4), l'émail électro-isolant (3) contenant au moins une nanomasse de remplissage, la nanomasse de remplissage étant formée d'une pluralité de plaquettes (5), une gaine en plaquettes (8a, 8b, 8c) formée par la nanomasse de remplissage entourant complètement ou pour l'essentiel complètement le fil torsadé (2).
  2. Fil émaillé selon la revendication 1, les plaquettes (5) étant disposées dans la gaine en plaquettes (8a, 8b, 8c) de préférence sans chevauchement ou pour l'essentiel sans chevauchement le long d'un axe longitudinal du fil torsadé (2) et/ou les plaquettes (5) étant disposées de préférence sans chevauchement ou pour l'essentiel sans chevauchement entourant le fil torsadé dans la gaine en plaquettes (8a, 8b, 8c).
  3. Fil émaillé selon l'une quelconque des revendications 1 ou 2, un rapport d'aspect de la nanomasse de remplissage ou des plaquettes (5) étant supérieur à 100.
  4. Fil émaillé selon l'une quelconque des revendications 1 à 3, les plaquettes (5) comportant une épaisseur jusqu'à un maximum de 20 nm.
  5. Fil émaillé selon l'une quelconque des revendications 1 à 4, les plaquettes (5) comportant une expansion latérale jusqu'à au moins 100 nm.
  6. Fil émaillé selon l'une quelconque des revendications 1 à 5, la nanomasse de remplissage étant un silicate stratifié.
  7. Fil émaillé selon l'une quelconque des revendications 1 à 6, l'émail électro-isolant (3) contenant jusqu'à 10 % vol. de la nanomasse de remplissage.
  8. Fil émaillé selon l'une quelconque des revendications 1 à 7, le rapport entre le diamètre du fil torsadé et le carré de l'épaisseur de l'émail électro-isolant (3) étant supérieur ou égal à 1µm-1.
  9. Fil émaillé selon l'une quelconque des revendications 1 à 8, l'émail électro-isolant (3) étant formé d'au moins deux couches d'émail électro-isolant, avantageusement identiques pour l'essentiel identiques.
  10. Procédé de fabrication d'un fil émaillé, en particulier d'un fil émaillé selon l'une quelconque des revendications 1 à 9, une nanomasse de remplissage comportant une pluralité de plaquettes (5) étant dispersée dans un polymère émaillé (4) et/ou un précurseur de polymère émaillé, un fil torsadé (2) étant revêtu d'un revêtement de polymère émaillé (4) avec la nanomasse de remplissage dispersée dedans et/ou de précurseur de polymère émaillé avec la nanomasse de remplissage dispersée dedans, le fil torsadé (2) revêtu du revêtement étant guidé par une buse d'émaillage (7) de manière que les plaquettes (5) de nanomasse de remplissage forment une gaine en plaquettes entourant le fil torsadé (5), le revêtement étant durci sur le fil torsadé (2) pour former un émail électro-isolant (3) de préférence par réchauffement.
EP13783319.0A 2012-11-23 2013-10-24 Fil verni Active EP2923362B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012111372.6A DE102012111372A1 (de) 2012-11-23 2012-11-23 Lackdraht
PCT/EP2013/072291 WO2014079647A1 (fr) 2012-11-23 2013-10-24 Fil verni

Publications (2)

Publication Number Publication Date
EP2923362A1 EP2923362A1 (fr) 2015-09-30
EP2923362B1 true EP2923362B1 (fr) 2016-09-21

Family

ID=49488582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13783319.0A Active EP2923362B1 (fr) 2012-11-23 2013-10-24 Fil verni

Country Status (5)

Country Link
US (1) US20150279507A1 (fr)
EP (1) EP2923362B1 (fr)
DE (1) DE102012111372A1 (fr)
ES (1) ES2608786T3 (fr)
WO (1) WO2014079647A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3511950A1 (fr) * 2018-01-16 2019-07-17 Schwering & Hasse Elektrodraht GmbH Fil émaillé

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3594969B1 (fr) * 2018-07-10 2024-02-28 Schwering & Hasse Elektrodraht GmbH Procédé de fabrication d'un fil conducteur revêtu de vernis isolant électrique et vernis isolant électrique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10335159A (ja) * 1997-05-30 1998-12-18 Hitachi Ltd 乾式変圧器巻線
FR2815038B1 (fr) * 2000-10-09 2003-01-17 Cit Alcatel Composition de vernis , procede de fabrication de la composition , fil de bobinage revetu et bobine resultante
JP2004055185A (ja) * 2002-07-17 2004-02-19 Toshiba Aitekku Kk エナメル線
EP2028228B1 (fr) * 2004-10-25 2018-12-12 IGM Group B.V. Nanoparticules fonctionnalisées
US7846853B2 (en) * 2005-04-15 2010-12-07 Siemens Energy, Inc. Multi-layered platelet structure
EP2526057A1 (fr) * 2010-01-20 2012-11-28 Bayer Intellectual Property GmbH Procédé de fabrication de plaquettes de silicate en couche à rapport de format élevé
JP2013109874A (ja) * 2011-11-18 2013-06-06 Hitachi Cable Ltd 絶縁電線

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3511950A1 (fr) * 2018-01-16 2019-07-17 Schwering & Hasse Elektrodraht GmbH Fil émaillé

Also Published As

Publication number Publication date
DE102012111372A1 (de) 2014-05-28
EP2923362A1 (fr) 2015-09-30
WO2014079647A1 (fr) 2014-05-30
US20150279507A1 (en) 2015-10-01
ES2608786T3 (es) 2017-04-17

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