EP0746860A1 - Twisted-conductor bundle for the windings of electric machines and equipment - Google Patents

Twisted-conductor bundle for the windings of electric machines and equipment

Info

Publication number
EP0746860A1
EP0746860A1 EP95909572A EP95909572A EP0746860A1 EP 0746860 A1 EP0746860 A1 EP 0746860A1 EP 95909572 A EP95909572 A EP 95909572A EP 95909572 A EP95909572 A EP 95909572A EP 0746860 A1 EP0746860 A1 EP 0746860A1
Authority
EP
European Patent Office
Prior art keywords
conductor
partial
spacers
conductors
stack
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
Application number
EP95909572A
Other languages
German (de)
French (fr)
Other versions
EP0746860B1 (en
Inventor
Paul Perger
Gernot Schnaubelt
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.)
ASTA Elektrodraht GmbH
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
Publication of EP0746860A1 publication Critical patent/EP0746860A1/en
Application granted granted Critical
Publication of EP0746860B1 publication Critical patent/EP0746860B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
    • 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
    • H01F27/2823—Wires
    • H01F2027/2838—Wires using transposed wires

Definitions

  • the invention relates to a wire conductor for windings of electrical machines and devices, in particular transformers, which is composed of individual enamel-insulated partial conductors to form a rectangular cross-section, the individual conductors running obliquely on the two flat sides of the cross-section in the opposite sense and on the narrow sides of the cross-section through an offset pass from one side to the other and the superimposed partial conductors are arranged next to one another in cross-section, possibly at a distance.
  • Such stranded conductors are known.
  • the top and bottom conductors change from two adjacent stacks of individual conductors to the other stack, the individual conductors preferably being offset by half a step length.
  • a constant overall height is achieved with odd-numbered stranded conductors.
  • the insulation of the finished stranded conductors was mainly carried out using paper wrapping.
  • This twisted pair has the advantage over the conventional twisted pair that better cooling is achieved.
  • this wire conductor is not continuously wrapped with paper insulation, but has a large-mesh net tape as a covering.
  • the object of the invention is to provide a twisted pair conductor of the type cited at the outset which on the one hand avoids the above disadvantages and on the other hand takes into account the needs of the machine and device designers, and allows a higher utilization of the material while preferably reducing the overall height.
  • the twisted conductor according to the invention is characterized in that at least one spacer is arranged between two superimposed partial conductors of each partial conductor stack, the transverse channel of each partial conductor stack thus formed preferably being aligned with one another.
  • the calculator strives for a frequent subdivision of the copper cross-section and sets the step length of the wire conductor very short. This minimizes the stray field and additional losses.
  • the invention does not conflict with these requirements either.
  • the spacers are arranged at a distance from one another in a plane of the partial conductor stack.
  • several channels for the coolant passage will be provided. The cooling that can be achieved in this way is reflected in the advantages mentioned.
  • the spacers are arranged in at least two different levels of the partial conductor stack. Corresponding to the hot spots to be expected, which can be determined by calculation beforehand, the arrangement of such cooling channels is essential. According to a special embodiment of the invention, the spacers arranged in different levels of the partial conductor stack are provided one above the other. This ensures a continuous flow through the winding in the axial direction.
  • the spacers arranged in different planes of the partial conductor stack are provided offset.
  • an optimal coolant circulation is given.
  • the stranded conductor is covered with a large-mesh net tape. Since the twist conductor running off the machine is wound on a drum or a winding core, the net band prevents the spacers from falling out. In addition, the wire conductor is also better and easier to wind up.
  • the mesh band is a glass fabric bandage pre-impregnated with partially cross-linked epoxy resin. This ensures the cohesion of the conductor bundle and increases the mechanical stability of the stranded conductor after heat treatment.
  • the covering is only provided in the area of the crank or the spacers. The bulges that occur in paper insulation and that reduce the winding gap or the oil channel are thereby reliably avoided.
  • the spacers for attachment to the partial conductor are coated on at least one surface with epoxy resin or have a glass fiber fleece pre-impregnated with partially crosslinked epoxy resin. This ensures that the spacers adhere well to the conductor surface.
  • the invention is not limited to stranded conductors with partial conductors that have a rectangular cross section.
  • round wire stranded conductors or stranded conductors with laterally integrated spacers are also included.
  • FIG. 1 shows a drill conductor according to the invention in the diagram and FIG. 2 shows an elevation. 1 and 2, a stranded conductor 1 is shown, the partial conductors 2 consisting of flat wires being arranged one above the other. It is known per se that the stranded conductor consisting of flat wires consists of up to approximately 80 partial conductors.
  • the top and bottom subconductors 2 each change from the two partial conductor stacks to the other partial conductor stack, the partial conductors preferably being offset by half the step length. This deformation for the passage of the partial conductor 2 from one partial conductor stack into the other partial conductor stack is the offset 3. After the offset 3 of the partial conductors 2, they run obliquely.
  • At least one spacer 4 is arranged between two partial conductors 2 of each partial conductor stack arranged one above the other, the transverse channel 5 of each partial conductor stack formed in this way being aligned with one another.
  • the spacers 4 can be arranged in one plane or in different planes of the partial conductor stack. This results in a cooling channel 5 for a coolant passage. When using this stranded conductor in a transformer winding, a cooling channel is provided in the axial direction.
  • a sheath can be provided.
  • This wrapping can be a large-mesh glass fabric bandage pre-impregnated with partially crosslinked epoxy resin.
  • the cooling channels 5 are formed by inserting spacers 4 between the partial conductors 2.
  • Partial conductor stack introduced from one side.
  • the spacers 4 are aligned with each other, so that a good coolant passage is guaranteed.
  • the spacers 4 can be introduced with a device, which is preferably arranged after the drill head, similar to a loading device.
  • the spacers 4 consist in particular of plastic.

Abstract

The aim of the invention is to provide a twisted-conductor bundle which meets the requirements of machine and equipment designers and enables the material to be used more efficiently while preferably also reducing the equipment height. Described is a twisted-conductor bundle (1) made up of flat-wire conductors (2) disposed one above the other. As in the prior art, the bundle may consist of up to about 80 conductors. The invention calls for at least one spacer (4) to be disposed between two superposed conductors (2) in each conductor stack, the transverse channels (5) thus formed in each conductor stack being flush with each other. The spacers (4) may be located in the same plane or in different planes in the conductor stack. A cooling channel (5) is thus formed through which coolant may be passed. When this twisted-conductor bundle is used in a transformer winding, a cooling channel is formed in the direction of the winding axis. The invention makes it possible for the first time to improve cooling in the axial direction. The improved cooling enables the current density to be increased, thus reducing the amount of copper necessary for the winding.

Description

BESCHREIBUNG DESCRIPTION
Drilleiter für Wicklungen elektrischer Maschinen und GeräteWire ladder for windings of electrical machines and devices
Die Erfindung betrifft einen Drilleiter für Wicklungen elektrischer Maschinen und Geräte, insbesondere Transformatoren, der aus einzelnen lackisolierten Teilleitern zu einem rechteckigen Querschnitt zusammengesetzt ist, wobei die Einzelleiter an den beiden Flachseiten des Querschnitts im entgegengesetzten Sinne schräg verlaufen und an den Schmalseiten des Querschnitts durch eine Kröpfung von einer Seite auf die andere übertreten und die übereinander angeordneten Teilleiter im Querschnitt, gegebenenfalls im Abstand, nebeneinander angeordnet sind.The invention relates to a wire conductor for windings of electrical machines and devices, in particular transformers, which is composed of individual enamel-insulated partial conductors to form a rectangular cross-section, the individual conductors running obliquely on the two flat sides of the cross-section in the opposite sense and on the narrow sides of the cross-section through an offset pass from one side to the other and the superimposed partial conductors are arranged next to one another in cross-section, possibly at a distance.
Derartige Drilleiter, deren Teilleiter einen rechteckigen Querschnitt aufweisen, sind bekannt. Bei der Verseilung der Teilleiter zum Drilleiter wechselt aus zwei nebeneinander liegenden Stapeln von Einzelleitern jeweils der oberste und unterste Leiter in den anderen Stapel über, wobei die Einzelleiter vorzugsweise um jeweils eine halbe Schrittlänge versetzt werden. Dabei wird bei ungeradzahligen Drilleitern eine gleichbleibende Gesamthöhe erreicht. Vorwiegend wurde die Isolation der fertig hergestellten Drilleiter mittels Papierumwicklung vorgenommen.Such stranded conductors, the partial conductors of which have a rectangular cross section, are known. When the partial conductors are stranded to the twisted conductor, the top and bottom conductors change from two adjacent stacks of individual conductors to the other stack, the individual conductors preferably being offset by half a step length. A constant overall height is achieved with odd-numbered stranded conductors. The insulation of the finished stranded conductors was mainly carried out using paper wrapping.
Ein sicherlich bahnbrechender Schritt bei der Entwicklung der Drilleiter war der sogenannte Großdrilleiter. Darunter versteht man Drilleiter mit einer Teilleiteranzahl von 35 bis zu 80 Leitern.The so-called Großdrilleiter was certainly a groundbreaking step in the development of the drill conductor. This means a stranded conductor with a number of partial conductors from 35 to 80 conductors.
Aus der AT-PS öA 726/91 ist ein Drilleiter , der eingangs zitierten Art bekannt, bei dem im Abstandsraum zwischen den beiden Teilleiterstapeln im Bereich der Kröpfung Zwischenstücke angeordnet sind, sodaß ein Kühlkanal für den Kühlmitteldurchtritt in radialer Richtung gegeben ist.From AT-PS öA 726/91 a twisted pair, of the type mentioned at the outset, in which intermediate pieces are arranged in the space between the two partial conductor stacks in the region of the offset, so that a cooling channel for the coolant passage is provided in the radial direction.
Dieser Drilleiter hat gegenüber dem konventionellen Drilleiter den Vorteil, daß eine bessere Kühlung erreicht wird. Natürlich wird dieser Drilleiter nicht kontinuierlich mit Papierisolation umwickelt, sondern er weist als Umhüllung ein großmaschiges Netzband auf.This twisted pair has the advantage over the conventional twisted pair that better cooling is achieved. Of course, this wire conductor is not continuously wrapped with paper insulation, but has a large-mesh net tape as a covering.
Durch die große Bündelhöhe sind die radialen Kühlkanäle der Wicklung jedoch sehr lang. Da der Hauptstrom des Kühlmittels aber in axialer Richtung erfolgt, kann es im mittigen Bereich des Drilleiters zu Wärmestaus kommen. Dieser Wärmestau muß vom Transformatorenberechner einkalkuliert werden, indem die Stromdichte entsprechend klein gewählt wird. Eine geringe Stromdichte bedingt jedoch einen hohen Kupferbedarf für die Wicklung.Due to the large bundle height, the radial cooling channels of the winding are very long. However, since the main flow of the coolant occurs in the axial direction, heat build-up can occur in the central area of the conduit. This heat build-up must be taken into account by the transformer calculator by selecting the current density accordingly low. However, a low current density requires a high copper requirement for the winding.
Aufgabe der Erfindung ist es, einen Drilleiter der eingangs zitierten Art zu schaffen, der einseits die obigen Nachteile vermeidet und der anderseits den Bedürfhissen der Maschinen- und Gerätekonstrukteure Rechnung trägt, und eine höhere Ausnutzung des Materials bei vorzugsweise gleichzeitiger Verringerung der Bauhöhe erlaubt.The object of the invention is to provide a twisted pair conductor of the type cited at the outset which on the one hand avoids the above disadvantages and on the other hand takes into account the needs of the machine and device designers, and allows a higher utilization of the material while preferably reducing the overall height.
Der erfindungsgemäße Drilleiter ist dadurch gekennzeichnet, daß zwischen zwei übereinander angeordneten Teilleitern jedes Teilleiterstapels mindestens ein Distanzstück angeordnet ist, wobei vorzugsweise der derart gebildete Querkanal jedes Teilleiterstapels miteinander fluchtet. Mit der Erfindung ist es erstmals möglich eine bessere Kühlung in axialer Richtung zu erreichen. Durch die bessere Kühlung kann jedoch die Stromdichte erhöht werden, sodaß ein geringer Kupferbedarf für die Wicklung erforderlich ist. Daraus ergeben sich weitere Vorteile, nämlich eine Einsparung beim Gewicht und eine kleinere Bauhöhe. Beide Faktoren tragen zu einer kostengünstigeren Herstellung bei.The twisted conductor according to the invention is characterized in that at least one spacer is arranged between two superimposed partial conductors of each partial conductor stack, the transverse channel of each partial conductor stack thus formed preferably being aligned with one another. With the invention it is possible for the first time to achieve better cooling in the axial direction. Due to the better cooling, however, the current density can be increased, so that less copper is required for the winding. This results in further advantages, namely savings in weight and a smaller overall height. Both factors contribute to a more cost-effective production.
Darüber hinaus strebt der Berechner eine oftmalige Unterteilung des Kupferquerschnittes an, und setzt die Schrittlänge des Drilleiters sehr kurz an. Damit wird eine Minimierung des Streufeldes und der Zusatzverluste erreicht. Auch diesen Forderungen steht die Erfindung nicht entgegen.In addition, the calculator strives for a frequent subdivision of the copper cross-section and sets the step length of the wire conductor very short. This minimizes the stray field and additional losses. The invention does not conflict with these requirements either.
Gemäß einer besonderen Ausgestaltung der Erfindung sind die Distanzstücke in einer Ebene des Teilleiterstapels im Abstand voneinander angeordnet. Natürlich wird man, axial gesehen, mehrere Kanäle für den Kühlmitteldurchtritt vorsehen. Die damit erzielbare Kühlung schlägt sich in den erwähnten Vorteilen wieder.According to a special embodiment of the invention, the spacers are arranged at a distance from one another in a plane of the partial conductor stack. Of course, from an axial point of view, several channels for the coolant passage will be provided. The cooling that can be achieved in this way is reflected in the advantages mentioned.
Nach einem weiteren Merkmal der Erfindung sind die Distanzstücke in mindestens zwei verschiendenen Ebenen des Teilleiterstapels angeordnet. Entsprechend der zu erwartenden Hot-Spots, die rechnerisch im voraus bestimmt werden können, ist die Anordnung derartiger Kühlkanäle unumgänglich. Nach einer besonderen Ausgestaltung der Erfindung sind die in verschiedenen Ebenen des Teilleiterstapels angeordneten Distanzstücke übereinander vorgesehen. Eine kontinuierliche Durchströmung der Wicklung in axialer Richtung ist dadurch gewährleistet.According to a further feature of the invention, the spacers are arranged in at least two different levels of the partial conductor stack. Corresponding to the hot spots to be expected, which can be determined by calculation beforehand, the arrangement of such cooling channels is essential. According to a special embodiment of the invention, the spacers arranged in different levels of the partial conductor stack are provided one above the other. This ensures a continuous flow through the winding in the axial direction.
Gemäß einem weiteren Merkmal der Erfindung sind die in verschiedenen Ebenen des Teilleiterstapels angeordneten Distanzstücke versetzt vorgesehen. Insbesondere im Hinblick auf einen Drilleiter, der bereits einen radialen Kühlkanal aufweist, ist eine optimale Kühlmittelzirkulation gegeben.According to a further feature of the invention, the spacers arranged in different planes of the partial conductor stack are provided offset. In particular with regard to a twisted pair conductor that already has a radial cooling channel, an optimal coolant circulation is given.
Entsprechend einer weiteren Ausgestaltung der Erfindung ist der Drilleiter mit einem großmaschigen Netzband umhüllt. Da der von der Maschine ablaufende Drilleiter auf eine Trommel oder einen Wicklungskern gewickelt wird, wird durch das Netzband das eventuelle Herausfallen der Distanzstücke vermieden. Darüber hinaus ist der Drilleiter auch besser und leichter aufzuwickeln.According to a further embodiment of the invention, the stranded conductor is covered with a large-mesh net tape. Since the twist conductor running off the machine is wound on a drum or a winding core, the net band prevents the spacers from falling out. In addition, the wire conductor is also better and easier to wind up.
Nach einer besonderen Ausgestaltung der Erfindung ist das Netzband eine mit teilvernetzten Epoxidharz vorimprägnierte Glasgewebebandage. Dadurch wird der Zusammenhalt des Leiterbündels gewährleistet und nach einer Wärmebehandlung die mechanische Stabilität des Drilleiters erhöht.According to a special embodiment of the invention, the mesh band is a glass fabric bandage pre-impregnated with partially cross-linked epoxy resin. This ensures the cohesion of the conductor bundle and increases the mechanical stability of the stranded conductor after heat treatment.
Gemäß einem weiteren Merkmal der Erfindung ist die Umhüllung nur im Bereich der Kröpfung bzw. der Distanzstücke vorgesehen. Dadurch werden die bei Papierisolation auftretenden Aufbauschungen, die den Wickelspalt bzw. den Ölkanal verringern, sicher vermieden.According to a further feature of the invention, the covering is only provided in the area of the crank or the spacers. The bulges that occur in paper insulation and that reduce the winding gap or the oil channel are thereby reliably avoided.
Nach einem besonderen Merkmal der Erfindung sind die Distanzstücke zur Befestigung am Teilleiter auf mindestens einer Fläche mit Epoxidharz bestrichen bzw. weisen ein mit teilvernetzten Epoxidharz vorimprägniertes Glasfaserflies auf. Eine gute Haftung der Distanzstücke auf der Teilleiteroberfläche ist damit sichergestellt.According to a special feature of the invention, the spacers for attachment to the partial conductor are coated on at least one surface with epoxy resin or have a glass fiber fleece pre-impregnated with partially crosslinked epoxy resin. This ensures that the spacers adhere well to the conductor surface.
Natürlich ist die Erfindung nicht auf Drilleiter mit Teilleitern, die einen rechteckigen Querschnitt aufweisen beschränkt. Im Sinne der Erfindung sind auch Runddraht- Drilleiter oder Drilleiter mit seitlich integrierten Distanzstücken umfaßt.Of course, the invention is not limited to stranded conductors with partial conductors that have a rectangular cross section. For the purposes of the invention, round wire stranded conductors or stranded conductors with laterally integrated spacers are also included.
In der Zeichnung ist ein Ausfuhrungsbeispiel der Erfindung dargestellt. Die Fig. 1 zeigt einen erfindungsgemäßen Drilleiter im Schaubild und Fig. 2 einen Aufriß. Gemäß der Fig. 1 und 2 ist ein Drilleiter 1 dargestellt, wobei die aus Flachdrähten bestehenden Teilleiter 2 übereinander angeordnet sind. Dabei ist es an sich bekannt, daß der aus Flachdrähten bestehende Drilleiter aus bis zu zirka 80 Teilleitem besteht. Bei der Verdrillung der Teilleiter zum Drilleiter, die maschinell erfolgt, wechselt aus den zwei Teilleiterstapeln jeweils der oberste und der unterste Teilleiter 2 in den anderen Teilleiterstapel über, wobei vorzugsweise die Teilleiter um jeweils die halbe Schrittlänge versetzt werden. Diese Verformung für das Übertreten des Teilleiters 2 von einem Teilleiterstapel in das andere Teilleiterstapel ist die Kröpfung 3. Nach der Kröpfung 3 der Teilleiter 2 verlaufen sie schräg.An exemplary embodiment of the invention is shown in the drawing. FIG. 1 shows a drill conductor according to the invention in the diagram and FIG. 2 shows an elevation. 1 and 2, a stranded conductor 1 is shown, the partial conductors 2 consisting of flat wires being arranged one above the other. It is known per se that the stranded conductor consisting of flat wires consists of up to approximately 80 partial conductors. When the partial conductors are twisted to the twisted conductor, which is done mechanically, the top and bottom subconductors 2 each change from the two partial conductor stacks to the other partial conductor stack, the partial conductors preferably being offset by half the step length. This deformation for the passage of the partial conductor 2 from one partial conductor stack into the other partial conductor stack is the offset 3. After the offset 3 of the partial conductors 2, they run obliquely.
Zwischen zwei übereinander angeordneten Teilleitern 2 jedes Teilleiterstapels ist mindestens ein Distanzstück 4 angeordnet, wobei der derart gebildete Querkanal 5 jedes Teilleiterstapels miteinander fluchtet.At least one spacer 4 is arranged between two partial conductors 2 of each partial conductor stack arranged one above the other, the transverse channel 5 of each partial conductor stack formed in this way being aligned with one another.
Die Distanzstücke 4 können in einer Ebene oder in verschiedenen Ebenen des Teilleiterstapels angeordnet sein. Es ergibt sich also ein Kühlkanal 5 für einen Kühlmitteldurchtritt. Bei einer Verwendung dieses Drilleiters in einer Transformatorenwicklung ist ein Kühlkanal in axialer Richtung gegeben.The spacers 4 can be arranged in one plane or in different planes of the partial conductor stack. This results in a cooling channel 5 for a coolant passage. When using this stranded conductor in a transformer winding, a cooling channel is provided in the axial direction.
Um das Zusammenhalten des Teilleiterbündels zu einem Drilleiter zu gewährleisten, kann eine Umhüllung vorgesehen sein. Diese Umhüllung kann eine großmaschige mit teilvernetzten Epoxidharz vorimprägnierte Glasgewebebandage sein.In order to ensure that the partial conductor bundle is held together to form a twisted conductor, a sheath can be provided. This wrapping can be a large-mesh glass fabric bandage pre-impregnated with partially crosslinked epoxy resin.
Die Kühlkanäle 5 werden durch Einschub von Distanzstücken 4 zwischen die Teilleiter 2 gebildet. Vorzugsweise werden die Distanzstücke 4 für jedesThe cooling channels 5 are formed by inserting spacers 4 between the partial conductors 2. Preferably, the spacers 4 for each
Teilleiterstapel von einer Seite eingebracht. Natürlich werden die Distanzstücke 4 miteinander fluchten, sodaß ein guter Kühlmitteldurchtritt gewährleistet ist.Partial conductor stack introduced from one side. Of course, the spacers 4 are aligned with each other, so that a good coolant passage is guaranteed.
Die Distanzstücke 4 können mit einer Vorrichtung, die vorzugsweise nach dem Drillkopf angeordnet ist, ähnlich einer Beschickungsvorrichtung eingebracht werden.The spacers 4 can be introduced with a device, which is preferably arranged after the drill head, similar to a loading device.
Die Distanzstücke 4 bestehen insbesondere aus Kunststoff.The spacers 4 consist in particular of plastic.
Bei einem Großdrilleiter mit 80 Teilleitern kann eine Aufdehnung von 15 mm erreicht werden, sodaß eine gute Kühlmittelzirkulation gewährleistet ist. In the case of a large conductor with 80 partial conductors, an expansion of 15 mm can be achieved, so that good coolant circulation is guaranteed.

Claims

PATENTANSPRÜCHE PATENT CLAIMS
1. Drilleiter für Wicklungen elektrischer Maschinen und Geräte, insbesondere Trans- formatoren, der aus einzelnen lackisolierten Teilleitern zu einem rechteckigen Quer¬ schnitt zusammengesetzt ist, wobei die Einzelleiter an den beiden Flachseiten des Querschnitts im entgegengesetzten Sinne schräg verlaufen und an den Schmalseiten des Querschnitts durch eine Kröpfung von einer Seite auf die andere übertreten und die übereinander angeordneten Teilleiter im Querschnitt, gegebenenfalls im Abstand nebeneinander angeordnet sind, dadurch gekennzeichnet, daß zwischen zwei übereinander angeordneten Teilleitern (2) jedes Teilleiterstapels mindestens ein Distanzstück (4) angeordnet ist, wobei vorzugsweise der derart gebildete Quer¬ kanal (5) jedes Teilleiterstapels miteinander flucht.1. stranded conductor for windings of electrical machines and devices, in particular transformers, which is composed of individual enameled partial conductors to form a rectangular cross-section, the individual conductors running obliquely on the two flat sides of the cross-section in the opposite sense and through on the narrow sides of the cross-section transfer a crank from one side to the other and the superimposed partial conductors are arranged in cross-section, possibly spaced next to one another, characterized in that at least one spacer (4) is arranged between two superimposed partial conductors (2) of each partial conductor stack, preferably the transverse channel (5) of each partial conductor stack thus formed is aligned with one another.
2. Drilleiter nach Anspruch 1, dadurch gekennzeichnet, daß die Distanzstücke (4) in einer Ebene des Teilleiterstapels im Abstand voneinander angeordnet sind.2. stranded wire according to claim 1, characterized in that the spacers (4) are arranged in a plane of the partial conductor stack at a distance from each other.
3. Drilleiter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Distanzstücke (4) in mindestens zwei verschiedenen Ebenen des Teilleiterstapels angeordnet sind.3. stranded wire according to claim 1 or 2, characterized in that the spacers (4) are arranged in at least two different levels of the partial conductor stack.
4. rilleiter nach Anspruch 3, dadurch gekennzeichnet, daß die in verschiedenen Ebenen des Teilleiterstapels angeordneten Distanzstücke (4) übereinander vorgesehen sind.4. Rilleiter according to claim 3, characterized in that the spacers (4) arranged in different planes of the partial conductor stack are provided one above the other.
5. Drilleiter nach Anspruch 4, dadurchgekennzeichnet, daß die in verschiedenen Ebenen des Teilleiterstapels angeordneten Distanzstücke (4) versetzt vorgesehen sind.5. stranded wire according to claim 4, characterized in that the spacers (4) arranged in different planes of the partial conductor stack are provided offset.
6. rilleiter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Drilleiter (1) mit einem großmaschigen Netzband umhüllt ist.6. rilleiter according to any one of claims 1 to 5, characterized in that the twisted conductor (1) is covered with a large-mesh network tape.
7. Drilleiter nach Anspruch 6, dadurch gekennzeichnet, daß das Netzband ein mit teilvernetzte Epoxidharz vorimprägnierte Glasgewebebandage ist.7. stranded wire according to claim 6, characterized in that the mesh band is a pre-impregnated with partially cross-linked epoxy resin glass fabric bandage.
8. Drilleiter nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Umhüllung nur im Bereich der Kröpfung bzw. der Distanzstücke vorgesehen ist. 8. stranded wire according to claim 6 or 7, characterized in that the covering is provided only in the region of the crank or the spacers.
9. Drilleiter nach mindestens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Distanzstücke (4) zur Befestigung am Teilleiter (2) auf mindestens einer Fläche mit Epoxidharz bestrichen sind, bzw. ein mit teilvemetztem Epoxidharz vorimprägniertes Glasfaserflies aufweisen. 9. stranded wire according to at least one of claims 1 to 8, characterized in that the spacers (4) for attachment to the partial conductor (2) are coated on at least one surface with epoxy resin, or have a pre-impregnated with partially crosslinked epoxy resin glass fiber fleece.
EP95909572A 1994-02-25 1995-02-23 Twisted-conductor bundle for the windings of electric machines and equipment Expired - Lifetime EP0746860B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT398/94 1994-02-25
AT0039894A AT403972B (en) 1994-02-25 1994-02-25 THIRD LADDER FOR WINDINGS OF ELECTRICAL MACHINES AND DEVICES
PCT/AT1995/000038 WO1995023420A1 (en) 1994-02-25 1995-02-23 Twisted-conductor bundle for the windings of electric machines and equipment

Publications (2)

Publication Number Publication Date
EP0746860A1 true EP0746860A1 (en) 1996-12-11
EP0746860B1 EP0746860B1 (en) 1998-04-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP95909572A Expired - Lifetime EP0746860B1 (en) 1994-02-25 1995-02-23 Twisted-conductor bundle for the windings of electric machines and equipment

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EP (1) EP0746860B1 (en)
AT (1) AT403972B (en)
DE (1) DE59501990D1 (en)
WO (1) WO1995023420A1 (en)

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Publication number Priority date Publication date Assignee Title
US7205875B2 (en) 2003-06-26 2007-04-17 Eaton Power Quality Corporation Hybrid air/magnetic core inductor
CN1581380A (en) * 2003-08-11 2005-02-16 尼克桑斯公司 Glass fiber silk screen tape commutating conducting wire, and its manufacture and use method
EP3839987B1 (en) * 2019-12-18 2024-04-17 Hitachi Energy Ltd Method and conductor structure for manufacturing an electric winding of an electromagnetic induction apparatus

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
US3283280A (en) * 1964-12-22 1966-11-01 Westinghouse Electric Corp Transposition for electrical conductors
GB1242402A (en) * 1967-11-07 1971-08-11 Bruce Peebles Ind Ltd Cable for an electrical winding
DE2151961A1 (en) * 1971-10-19 1973-04-26 Ceag Dominit Ag WINDING CONSTRUCTED FROM PARALLEL WINDED FLAT WIRE, IN PARTICULAR TRANSFORMER WINDING

Non-Patent Citations (1)

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Title
See references of WO9523420A1 *

Also Published As

Publication number Publication date
WO1995023420A1 (en) 1995-08-31
DE59501990D1 (en) 1998-05-28
ATA39894A (en) 1997-11-15
EP0746860B1 (en) 1998-04-22
AT403972B (en) 1998-07-27

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