WO1998014964A1 - Multiwire parallel conductor for windings of electrical machines and appliances - Google Patents

Multiwire parallel conductor for windings of electrical machines and appliances Download PDF

Info

Publication number
WO1998014964A1
WO1998014964A1 PCT/AT1997/000208 AT9700208W WO9814964A1 WO 1998014964 A1 WO1998014964 A1 WO 1998014964A1 AT 9700208 W AT9700208 W AT 9700208W WO 9814964 A1 WO9814964 A1 WO 9814964A1
Authority
WO
WIPO (PCT)
Prior art keywords
adhesive
conductors
conductor
multiple parallel
parallel conductor
Prior art date
Application number
PCT/AT1997/000208
Other languages
German (de)
French (fr)
Inventor
Paul Perger
Karl SCHRAMBÖCK
Original Assignee
Asta 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 Asta Elektrodraht Gmbh filed Critical Asta Elektrodraht Gmbh
Priority to AT97942693T priority Critical patent/ATE189555T1/en
Priority to EP97942693A priority patent/EP0931323B1/en
Priority to DE59701100T priority patent/DE59701100D1/en
Publication of WO1998014964A1 publication Critical patent/WO1998014964A1/en

Links

Classifications

    • 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
    • H01F27/2823—Wires
    • 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
    • H01F27/323—Insulation between winding turns, between winding layers

Definitions

  • the invention relates to a multiple parallel conductor for windings of electrical machines and devices, in particular twin conductors or triple conductors, wherein each individual conductor is preferably insulated and the bundle of conductors is preferably surrounded by paper insulation or a holding tape.
  • the individual conductors were provided with an epoxy resin coating after the paint insulation, the individual conductor being completely surrounded by a resin in the B state. These individual conductors were then twisted, stranded or simply arranged in parallel, wrapped with paper insulation or holding tape and cured.
  • the conductors for example processed into a transformer winding, are then pre-pressed, hardened and, if necessary, re-pressed.
  • the object of the invention is to provide a multiple parallel conductor, the properties of which during and after winding and after hardening meet the required criteria, both mechanically and electrically, and certainly do not excludes oil-impregnable gas inclusions, especially in the narrow sides and in the edge area.
  • the invention is characterized in that at least one of the longitudinal surfaces of the individual conductors of the conductor bundle is provided with a crosslinkable adhesive.
  • the adhesive is a partially cross-linked reaction resin, preferably an epoxy resin.
  • the epoxy resins have both the desired adhesive strength and the required mechanical strength in the event of a short shot.
  • the adhesive is an anaerobically crosslinking synthetic resin.
  • these air-hardening systems do not impair the desired dielectric strength, on the other hand the adhesive strength is increased for this application, but they do not require additional hardening and can therefore be processed more quickly and cost-effectively.
  • the adhesive is applied to a maximum of 95%, in particular 80% of the longitudinal surface.
  • the edge and narrow side area remains free of adhesive, because the adhesive can no longer escape during the further production steps.
  • the edge areas and narrow sides of the individual conductors are free of adhesive.
  • the advantage of this is that there is no material application in the sensitive edge and narrow side area.
  • At least one of the mutual contact surfaces of the individual conductors is provided with the adhesive. This measure ensures a mechanically very compact conductor bundle.
  • the invention is explained in more detail with reference to drawings. 1 shows a twin conductor with one-sided adhesive layer, FIG. 2 shows a twin conductor with double-sided adhesive layer and FIG. 3 shows a twisted conductor.
  • the enamelled wire conductors 1 are coated with adhesive resin 2 on the longitudinal contact surfaces and wrapped with paper insulation 3.
  • the conductor bundle is hardened later.
  • the adhesive surface should be approx. 80% of the contact area and the edge and narrow side area must remain free of adhesive.
  • epoxy resins in the partially cross-linked state, the so-called B state have proven themselves due to their favorable winding properties, viscosity and shorter curing times.
  • the enamelled wire conductors 1 are coated with adhesive resin 2 both on the longitudinal contact surfaces and on the outer longitudinal surfaces.
  • the paper insulation 3 is wound over this composite and thus results in a slightly stronger, but more compact, twin conductor. This also applies to multiple parallel conductors consisting of three, four or more conductors.
  • a stranded conductor consisting of individual conductors 1 is provided with the partial coating 2.
  • This wire conductor can either be provided with paper insulation or a holding strap.
  • This tether may be a large mesh.
  • the wire conductor does not necessarily have to be surrounded by insulation. Because the individual conductors 1 are fixed, the bundle of conductors practically holds itself.
  • the conductor bundle has a very high mechanical strength and the electrical criteria are guaranteed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Programmable Controllers (AREA)
  • Rectifiers (AREA)
  • Insulating Of Coils (AREA)
  • Insulating Bodies (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The invention seeks to obtain a multiwire parallel conductor with properties meeting the required mechanical and electric criteria during and after winding and after hardening, and excluding with all certainty non oil impregnable gas inclusions in narrow sides and rim area. Enamel-insulated wire conductors (1) are coated with adhesive resin (2) on longitudinal contact surfaces and wrapped with paper insulation (3). The conductor bundle hardens afterwards. The adhesive area should represent approximately 80 % of the contact surface and the edge area must remain free of adhesive. In practice epoxy resins in a partially cross-linked state, so-called state B, have proved useful on account of their good winding properties, viscosity and shorter hardening times. Indicated design enables the conductor bundle to mechanically withstand the press-in process and associated shear strain after hardening of adhesive layers and does not impair the required electric strength of about 4.5kV/mm. The invention primarily guarantees that there will be no inclusions of air or gas bubbles which could otherwise lead to glow effects.

Description

Mehrfachparallelleiter für Wicklungen elektrischer Maschinen und Geräte Multiple parallel conductor for windings of electrical machines and devices
Die Erfindung betrifft einen Mehrfachparallelleiter für Wicklungen elektrischer Maschinen und Geräte, insbesondere Zwillingsleiter oder Drilleiter, wobei jeder Einzelleiter vorzugsweise lackisoliert ist und das Leiterbündel vorzugsweise mit einer Papierisolation oder einem Halteband umgeben ist.The invention relates to a multiple parallel conductor for windings of electrical machines and devices, in particular twin conductors or triple conductors, wherein each individual conductor is preferably insulated and the bundle of conductors is preferably surrounded by paper insulation or a holding tape.
Bisher wurden zur Herstellung von Mehrfachparallelleitern der oben genannten Art flache Teilleiter mit Lack mehrfach umhüllt um bei geringer Einzelschichtstärke des Lackes eine hohe Durchschlagfestigkeit aufgrund der geringen bis fehlenden Porigkeit dieser Schichten und der guten Materialeigenschaften zu gewährleisten. Es hat sich in der Praxis der Fertigung solcher Mehrfachparallelleiter jedoch gezeigt, daß die mechanische Festigkeit beim Wickeln oder im Kurzschlußfall nicht ausreichend hoch ist und es somit zu einem Wegkippen oder einer Verformung eines der Leiter kommt. Das Wegkippen eines Leiters wird auch durch die besonders glatten Lackoberflächen begünstigt.So far, flat subconductors have been coated with lacquer several times to produce multiple parallel conductors of the type mentioned above, in order to ensure high dielectric strength due to the low to missing porosity of these layers and the good material properties with a low individual layer thickness of the lacquer. However, it has been shown in practice in the manufacture of such multiple parallel conductors that the mechanical strength during winding or in the event of a short circuit is not sufficiently high, and thus one of the conductors tilts away or deforms. The tilting of a conductor is also promoted by the particularly smooth lacquer surfaces.
Als Abhilfe wurden daher nach der Lackisolierung die Einzelleiter mit einer Epoxidharzbeschichtung versehen, wobei der Einzelleiter vollkommen mit einem Harz im B-Zustand umgeben wurde. Diese Einzelleiter wurden danach verdrillt, verseilt oder einfach parallel angeordnet, mit Papierisolation oder Halteband umwickelt und ausgehärtet.As a remedy, the individual conductors were provided with an epoxy resin coating after the paint insulation, the individual conductor being completely surrounded by a resin in the B state. These individual conductors were then twisted, stranded or simply arranged in parallel, wrapped with paper insulation or holding tape and cured.
Die beispielsweise zu einer Transformatorenwicklung verarbeiteten Leiter werden dann vorgepreßt, ausgehärtet und gegebenenfalls nachgepreßt. Beim Vorpressen derThe conductors, for example processed into a transformer winding, are then pre-pressed, hardened and, if necessary, re-pressed. When pressing the
Wicklung ist das im B-Zustand befindliche Harz bei den Kanten der Leiter ausgetreten, wodurch sich Gaseinschlüsse bilden konnten. In den Fällen, wo zwischen den Einzelleitern solche Lösungsmittel- bzw. Luftbläschen eingeschlossen wurden, konnte es im Betrieb zu Glimmerscheinungen und in der Folge zur Zerstörung des Isolationssystems kommen, da diese Gaseinschlüsse bzw. derartige Hohlräume nach dem Wärmebehandlungsprozeß nicht mehr ölimprägnierbar waren.Winding, the resin in the B state has leaked out at the edges of the conductors, which could lead to gas inclusions. In the cases where such solvent or air bubbles were trapped between the individual conductors, glow phenomena could occur during operation and, as a result, the insulation system could be destroyed, since these gas inclusions or such cavities were no longer oil-impregnable after the heat treatment process.
Die Aufgabe der Erfindung ist es, einen Mehrfachparalleiter zu schaffen, dessen Eigenschaften beim und nach dem Wickeln, sowie nach der Härtung den geforderten Kriterien, sowohl mechanisch wie elektrisch, entspricht und mit Sicherheit nicht ölimprägnierbare Gaseinschlüsse vor allem in den Schmalseiten und im Kantenbereich ausschließt.The object of the invention is to provide a multiple parallel conductor, the properties of which during and after winding and after hardening meet the required criteria, both mechanically and electrically, and certainly do not excludes oil-impregnable gas inclusions, especially in the narrow sides and in the edge area.
Die Erfindung ist dadurch gekennzeichnet, daß mindestens eine der Längsflächen der Einzelleiter des Leiterbündels mit einem vernetzungsfähigen Klebemittel versehen ist.The invention is characterized in that at least one of the longitudinal surfaces of the individual conductors of the conductor bundle is provided with a crosslinkable adhesive.
Durch diese Ausgestaltung wird sichergestellt, daß zum Einen nach der Härtung der Kleberschichten, das Leiterbündel mechanisch den Preßvorgang und die damit verbundene Scherbelastung übersteht und zum Anderen die geforderte Spannungsfestigkeit von ca. 4,5 kV/mm nicht beeinträchtigt. Vorallem aber ist durch die Erfindung sichergestellt, daß keinerlei Einschlüsse von Luft- bzw. Gasbläschen auftreten, und somit Glimmerscheinungen vermieden werden.This configuration ensures that, on the one hand, after the adhesive layers have hardened, the conductor bundle mechanically survives the pressing process and the associated shear stress and, on the other hand, does not impair the required dielectric strength of approximately 4.5 kV / mm. Above all, however, it is ensured by the invention that no inclusions of air or gas bubbles occur, and thus mica phenomena are avoided.
Nach einer weiteren Ausgestaltung der Erfindung ist das Klebemittel ein teilvemetztes Reaktionsharz, vorzugsweise ein Epoxidharz. Die Epoxidharze weisen sowohl die gewünschte Klebekraft, wie auch die benötigte mechanische Festigkeit im Kurzschußfall auf.According to a further embodiment of the invention, the adhesive is a partially cross-linked reaction resin, preferably an epoxy resin. The epoxy resins have both the desired adhesive strength and the required mechanical strength in the event of a short shot.
Gemäß einem weiteren Merkmal ist das Klebemittel ein anaerobisch vernetzendes Kunstharz. Diese unter Luftabschluß härtenden Systeme bieten zum einen keine Beeinträchtigung der gewünschten Spannungsfestigkeit, zum anderen ist die Klebekraft für diesen Anwendungsfall verstärkt, sie benötigen jedoch keine zusätzliche Härtung und können somit rascher und kostengünstiger verarbeitet werden.According to a further feature, the adhesive is an anaerobically crosslinking synthetic resin. On the one hand, these air-hardening systems do not impair the desired dielectric strength, on the other hand the adhesive strength is increased for this application, but they do not require additional hardening and can therefore be processed more quickly and cost-effectively.
Nach einer Ausgestaltung der Erfindung ist das Klebemittel auf maximal 95%, insbesondere auf 80% der Längsfläche, aufgetragen. Dadurch bleibt der Kanten- und Schmalseitenbereich frei von Kleber, weil der Kleber auch bei den weiteren Fertigungsschritten nicht mehr austreten kann.According to one embodiment of the invention, the adhesive is applied to a maximum of 95%, in particular 80% of the longitudinal surface. As a result, the edge and narrow side area remains free of adhesive, because the adhesive can no longer escape during the further production steps.
Nach einem Merkmal der Erfindung sind die Kantenbereiche und Schmalseiten der Einzelleiter frei von Klebemittel. Der Vorteil davon ist, daß es dadurch zu keinem Materialauftrag im sensiblen Kanten- und Schmalseitenbereich kommt.According to a feature of the invention, the edge areas and narrow sides of the individual conductors are free of adhesive. The advantage of this is that there is no material application in the sensitive edge and narrow side area.
Gemäß einer weiteren Ausgestaltung der Erfindung ist mindestens eine der gegenseitigen Berührungsflächen der Einzelleiter mit dem Klebemittel versehen. Durch diese Maßnahme wird ein mechanisch sehr kompaktes Leiterbündel gewährleistet. Die Erfindung wird anhand von Zeichnungen näher erläutert. Die Fig. 1 zeigt einen Zwillingsleiter mit einseitiger Kleberschicht, Fig. 2 einen Zwillingsleiter mit beidseitiger Kleberschicht und Fig. 3 einen Drilleiter.According to a further embodiment of the invention, at least one of the mutual contact surfaces of the individual conductors is provided with the adhesive. This measure ensures a mechanically very compact conductor bundle. The invention is explained in more detail with reference to drawings. 1 shows a twin conductor with one-sided adhesive layer, FIG. 2 shows a twin conductor with double-sided adhesive layer and FIG. 3 shows a twisted conductor.
In der Fig. 1 sind die Lackdrahtleiter 1 mit Klebeharz 2 an den Berührungslängsflächen beschichtet und mit Papierisolation 3 umwickelt. Das Leiterbündel wird später ausgehärtet. Die Klebefläche soll ca. 80% der Berührungsfläche sein und der Kanten- und Schmalseitenbereich muß frei von Kleber bleiben. In der Praxis haben sich Epoxidharze im teilvernetzten Zustand, dem sogenannten B-Zustand, aufgrund ihrer günstigen Wicklungseigenschaften.Viskosität und der kürzeren Aushärtzeiten bewährt.In FIG. 1, the enamelled wire conductors 1 are coated with adhesive resin 2 on the longitudinal contact surfaces and wrapped with paper insulation 3. The conductor bundle is hardened later. The adhesive surface should be approx. 80% of the contact area and the edge and narrow side area must remain free of adhesive. In practice, epoxy resins in the partially cross-linked state, the so-called B state, have proven themselves due to their favorable winding properties, viscosity and shorter curing times.
In der Fig. 2 sind die Lackdrahtleiter 1 mit Klebeharz 2 sowohl an den Berührungslängsflächen als auch an den Außenlängsflächen beschichtet. Über diesen Verbund wird die Papierisolation 3 gewickelt und ergibt somit einen zwar geringfügig stärkeren, jedoch kompakteren, Zwillingsleiter. Sinngemäß gilt dies auch für Mehrfachparallelleiter bestehend aus drei, vier oder mehr Leitern.In FIG. 2, the enamelled wire conductors 1 are coated with adhesive resin 2 both on the longitudinal contact surfaces and on the outer longitudinal surfaces. The paper insulation 3 is wound over this composite and thus results in a slightly stronger, but more compact, twin conductor. This also applies to multiple parallel conductors consisting of three, four or more conductors.
Gemäß der Fig. 3 ist ein aus Einzelleiter 1 bestehender Drilleiter mit der partiellen Beschichtung 2 versehen. Dieser Drilleiter kannn entweder mit einer Papierisolation oder einem Halteband versehen sein. Dieses Halteband ist gegebenenfalls ein großmaschiges Netz. Der Drilleiter muß aber nicht unbedingt mit einer Isolation umgeben sein. Durch die Verröbelung der Einzelleiter 1 hält sich das Leiterbündel praktisch selbst.According to FIG. 3, a stranded conductor consisting of individual conductors 1 is provided with the partial coating 2. This wire conductor can either be provided with paper insulation or a holding strap. This tether may be a large mesh. The wire conductor does not necessarily have to be surrounded by insulation. Because the individual conductors 1 are fixed, the bundle of conductors practically holds itself.
Wesentlich ist, daß die gegenseitigen Längsberührungsflächen der Einzelleiter 1 mit dem Klebemittel 2 versehen sind. Nach dem Aushärten weist das Leiterbündel eine sehr hohe mechanische Festigkeit auf und die elektrischen Kriterien sind gewährleistet. It is essential that the mutual longitudinal contact surfaces of the individual conductors 1 are provided with the adhesive 2. After curing, the conductor bundle has a very high mechanical strength and the electrical criteria are guaranteed.

Claims

Patentansprüche claims
1. Mehrfachparallelleiter für Wicklungen elektrischer Maschinen und Geräte, insbesondere Zwillingsleiter und Drilleiter, wobei jeder Einzelleiter vorzugsweise lackisoliert ist und das Leiterbündel vorzugsweise mit einer Papierisolation oder einem Halteband umgeben ist, dadurch gekennzeichnet, daß mindestens eine der Längsflächen der Einzelleiter des Leiterbündels mit einem vernetzungsfähigen Klebemittel versehen ist.1. Multiple parallel conductors for windings of electrical machines and devices, in particular twin conductors and twisted pair conductors, each individual conductor preferably being insulated from lacquer and the conductor bundle preferably surrounded by paper insulation or a holding tape, characterized in that at least one of the longitudinal surfaces of the individual conductors of the conductor bundle is coated with a crosslinkable adhesive is provided.
2. Mehrfachparallelleiter nach Anspruch 1, dadurch gekennzeichnet, daß das Klebe- mittel ein teilvemetztes Reaktionsharz, vorzugsweise ein Epoxidharz ist.2. Multiple parallel conductor according to claim 1, characterized in that the adhesive is a partially cross-linked reaction resin, preferably an epoxy resin.
3. Mehrfachparallelleiter nach Anspruch 1, dadurch gekennzeichnet, daß das Klebemittel ein anaerobisch vernetzendes Kunstharz ist.3. Multiple parallel conductor according to claim 1, characterized in that the adhesive is an anaerobic cross-linking synthetic resin.
4. Mehrfachparallelleiter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Klebemittel auf maximal 95%, insbesondere auf 80% der Längsfläche, aufgetragen ist.4. Multiple parallel conductor according to one of claims 1 to 3, characterized in that the adhesive is applied to a maximum of 95%, in particular to 80% of the longitudinal surface.
5. Mehrfachparallelleiter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Kantenbereiche und Schmalseite der Einzelleiter frei von Klebemittel sind.5. Multiple parallel conductor according to one of claims 1 to 4, characterized in that the edge areas and narrow side of the individual conductors are free of adhesive.
6. Mehrfachparallelleiter nach einem der Ansprüche 1 bis 4, dadurch gekenn zeichnet, daß mindestens eine der gegenseitigen Berührungsflächen der6. Multiple parallel conductor according to one of claims 1 to 4, characterized in that at least one of the mutual contact surfaces of the
Einzelleiter mit dem Klebemittel versehen ist. Individual conductors are provided with the adhesive.
PCT/AT1997/000208 1996-09-30 1997-09-24 Multiwire parallel conductor for windings of electrical machines and appliances WO1998014964A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT97942693T ATE189555T1 (en) 1996-09-30 1997-09-24 MULTIPLE PARALLEL CONDUCTORS FOR WINDINGS OF ELECTRICAL MACHINES AND DEVICES
EP97942693A EP0931323B1 (en) 1996-09-30 1997-09-24 Multiwire parallel conductor for windings of electrical machines and appliances
DE59701100T DE59701100D1 (en) 1996-09-30 1997-09-24 MULTIPLE PARALLEL LADDER FOR WINDINGS OF ELECTRICAL MACHINES AND DEVICES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA1727/96 1996-09-30
AT172796 1996-09-30

Publications (1)

Publication Number Publication Date
WO1998014964A1 true WO1998014964A1 (en) 1998-04-09

Family

ID=3519713

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1997/000208 WO1998014964A1 (en) 1996-09-30 1997-09-24 Multiwire parallel conductor for windings of electrical machines and appliances

Country Status (4)

Country Link
EP (1) EP0931323B1 (en)
AT (1) ATE189555T1 (en)
DE (1) DE59701100D1 (en)
WO (1) WO1998014964A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951709A1 (en) * 1999-10-27 2001-05-03 Alcatel Sa Electrical conductor with a rectangular or quadratic cross section
WO2012113851A1 (en) * 2011-02-24 2012-08-30 Asta Elektrodraht Gmbh Continuously transposed conductor
US9153359B2 (en) 2011-02-24 2015-10-06 Asta Elektrodraht Gmbh Continuously transposed conductor
RU2575877C2 (en) * 2009-11-19 2016-02-20 Эссэкс Эроп Continuously transposed wire
US20160189824A1 (en) * 2013-09-06 2016-06-30 Furukawa Electric Co., Ltd. Rectangular wire, and method of producing the same and electrical equipment using the same
US20160189826A1 (en) * 2013-09-06 2016-06-30 Furukawa Electric Co., Ltd. Rectangular wire, and method of producing the same and electrical equipment using the same
US10991483B2 (en) * 2015-11-20 2021-04-27 Essex Furukawa Magnet Wire Japan Co., Ltd. Assembled wire, method of producing the same, and electrical equipment using the same
RU210354U1 (en) * 2021-10-29 2022-04-11 Акционерное общество "Москабельмет" (АО "МКМ") WINDING WIRE WITH RECTANGULAR COPPER CORE

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739571A1 (en) * 1976-09-17 1978-03-23 Asea Ab ELECTRICAL CONDUCTOR OR ELECTRICAL COIL WITH INSULATION OF MICA AND RESIN LAYERS
JPS5645008A (en) * 1979-09-19 1981-04-24 Toshiba Corp Gas-insulated transformer
EP0030338A1 (en) * 1979-12-11 1981-06-17 Asea Ab Insulated electric conductor for windings of transformers and reactive coils
JPS6020505A (en) * 1983-07-13 1985-02-01 Mitsubishi Electric Corp Paper wound wire
JPH04145610A (en) * 1990-10-08 1992-05-19 Fukushima Tokai Denshi Kogyo Kk Manufacture of rotary transformer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739571A1 (en) * 1976-09-17 1978-03-23 Asea Ab ELECTRICAL CONDUCTOR OR ELECTRICAL COIL WITH INSULATION OF MICA AND RESIN LAYERS
JPS5645008A (en) * 1979-09-19 1981-04-24 Toshiba Corp Gas-insulated transformer
EP0030338A1 (en) * 1979-12-11 1981-06-17 Asea Ab Insulated electric conductor for windings of transformers and reactive coils
JPS6020505A (en) * 1983-07-13 1985-02-01 Mitsubishi Electric Corp Paper wound wire
JPH04145610A (en) * 1990-10-08 1992-05-19 Fukushima Tokai Denshi Kogyo Kk Manufacture of rotary transformer

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 103 (E - 064) 3 July 1981 (1981-07-03) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 136 (E - 320) 12 June 1985 (1985-06-12) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 420 (E - 1259) 4 September 1992 (1992-09-04) *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951709A1 (en) * 1999-10-27 2001-05-03 Alcatel Sa Electrical conductor with a rectangular or quadratic cross section
RU2575877C2 (en) * 2009-11-19 2016-02-20 Эссэкс Эроп Continuously transposed wire
WO2012113851A1 (en) * 2011-02-24 2012-08-30 Asta Elektrodraht Gmbh Continuously transposed conductor
AT12993U1 (en) * 2011-02-24 2013-03-15 Asta Elektrodraht Gmbh Continuous drill ladder
CN103477403A (en) * 2011-02-24 2013-12-25 阿斯塔导线有限公司 Continuously transposed conductor
US9153359B2 (en) 2011-02-24 2015-10-06 Asta Elektrodraht Gmbh Continuously transposed conductor
US20160189824A1 (en) * 2013-09-06 2016-06-30 Furukawa Electric Co., Ltd. Rectangular wire, and method of producing the same and electrical equipment using the same
US20160189826A1 (en) * 2013-09-06 2016-06-30 Furukawa Electric Co., Ltd. Rectangular wire, and method of producing the same and electrical equipment using the same
US10319491B2 (en) * 2013-09-06 2019-06-11 Furukawa Electric Co., Ltd. Rectangular wire, and method of producing the same and electrical equipment using the same
US10325695B2 (en) * 2013-09-06 2019-06-18 Furukawa Electric Co., Ltd. Rectangular wire, and method of producing the same and electrical equipment using the same
US10991483B2 (en) * 2015-11-20 2021-04-27 Essex Furukawa Magnet Wire Japan Co., Ltd. Assembled wire, method of producing the same, and electrical equipment using the same
RU210354U1 (en) * 2021-10-29 2022-04-11 Акционерное общество "Москабельмет" (АО "МКМ") WINDING WIRE WITH RECTANGULAR COPPER CORE

Also Published As

Publication number Publication date
DE59701100D1 (en) 2000-03-09
EP0931323B1 (en) 2000-02-02
EP0931323A1 (en) 1999-07-28
ATE189555T1 (en) 2000-02-15

Similar Documents

Publication Publication Date Title
EP0368038B1 (en) High voltage insulation system for electric machines
DE2506790C2 (en) Corona protection arrangement for conductor bars or coil windings
DE19817287A1 (en) Winding rod for the high-voltage winding of an electrical machine and method for producing such a winding rod
EP0898806B1 (en) Substrate for an electrical winding and process for producing corona shielding
DE2261686A1 (en) BANDAGE TAPE FOR ELECTRIC LADDER
EP1573882A1 (en) Litz wire coils for electric machines
DE3008818A1 (en) Jointing sleeve for HT cables - with plastic cylinder over metal tube and insulating tape wraps
EP2689514A2 (en) Manufacturing method of an electrical insulation system of a conductor in a winding head of an electric machine
EP0931323B1 (en) Multiwire parallel conductor for windings of electrical machines and appliances
EP1371124B1 (en) Method for producing a bar-type conductor
DE3503019C2 (en) Electrical sheet for the production of iron cores for electrical devices consisting of a large number of sheet layers
WO2007057251A1 (en) Mica-reinforced insulation
EP0092018B1 (en) Reactor, particularly air isolated reactor without magnetic core
DE2107332A1 (en) Process for the production of mica-containing insulation for electrical conductors
DE2538702C2 (en) Process for the production of winding insulation for electrical machines
DE1015526B (en) Insulated coil for installation in the slots of an electrical machine
DE2151753B2 (en) Coil for insertion in the slots of a stator or rotor of an electrical machine
DE19951709A1 (en) Electrical conductor with a rectangular or quadratic cross section
DE1538711B2 (en) PROCESS FOR THE MANUFACTURING OF HIGH VOLTAGE COIL WINDINGS FOR ELECTRICAL MACHINERY
CH299052A (en) Insulated electrical conductor structure and process for its manufacture.
DE2339341C2 (en) Process for the mechanical consolidation of twisted conductor layer windings formed from baked lacquer partial conductors for transformers, inductors and the like
DE102021201993A1 (en) Stator for an electrical machine, electrical machine, method for producing a stator and use of an insulating paper
DE2108343B2 (en) Stranded conductor with paper insulation for transformer windings - has stiffening tape made of shrinkable material crumpled by heat from drum
DE1438365C (en) High-voltage-resistant insulation for the slot parts of coils in electrical machines
DE1287684B (en)

Legal Events

Date Code Title Description
AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1997942693

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1997942693

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1997942693

Country of ref document: EP