EP0170170A1 - Layer winding for transformers - Google Patents

Layer winding for transformers Download PDF

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Publication number
EP0170170A1
EP0170170A1 EP85109066A EP85109066A EP0170170A1 EP 0170170 A1 EP0170170 A1 EP 0170170A1 EP 85109066 A EP85109066 A EP 85109066A EP 85109066 A EP85109066 A EP 85109066A EP 0170170 A1 EP0170170 A1 EP 0170170A1
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EP
European Patent Office
Prior art keywords
winding
layer
spacer strips
insulating wall
additional insulation
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
EP85109066A
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German (de)
French (fr)
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EP0170170B1 (en
Inventor
Herbert Mössinger
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Siemens AG
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Transformatoren Union AG
Siemens AG
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Application filed by Transformatoren Union AG, Siemens AG filed Critical Transformatoren Union AG
Priority to AT85109066T priority Critical patent/ATE30650T1/en
Publication of EP0170170A1 publication Critical patent/EP0170170A1/en
Application granted granted Critical
Publication of EP0170170B1 publication Critical patent/EP0170170B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads
    • 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 layer winding for transformers with end-side, additional insulation for winding conductor insulation having rejections from winding layers flanked radially on both sides by further winding layers and with cooling channels separated between the winding layers by an insulating wall and kept open radially one above the other by spacer strips.
  • thicker spacer strips or oil channel strips adapted to the dimensions of the diversions have usually been provided on the entire winding circumference to lead out the reinforced insulated leads, in particular from inner winding layers, in order to ensure a sufficient flow of cooling oil.
  • the use of the thicker spacer bars causes diameter increases on the winding structure and thus weight increases with the consequence of an increased material consumption and with increasing transport dimensions.
  • the invention is therefore based on the object to improve the structure of layer windings of the type mentioned in such a way that the cross-sectional area claimed by the winding becomes smaller than in the previously conventional structure, but the safe dissipation of the heat losses generated from the winding must also be ensured like the circular cross-sectional shape of the individual winding layers which is essential for the short-circuit strength.
  • the insulating walls are curved in the same direction as in the normal circumferential area at every point of the diversion area and that the additional insulation of each of the diversions is continued in each case over two or more spacer strips in the circumferential direction on the first turn of the winding layer and that the deviations from the circular shape extend in cross-section of the insulating walls including the transition zones per diversion over several spacer strips in the circumferential direction of the winding.
  • the insulating walls consist of paper webs which are wound onto one another and glued to one another point by point, one end of each spacer strip is glued to the adjacent insulating wall, and the additional insulation of the leads is more elastic in itself than the insulating walls and the winding layers.
  • the winding structure according to the invention is very advantageous because, by not having to reinforce the cooling channels flanking the winding layers with leads, it leads to a smaller overall cross-section of the winding arrangement and thus also to smaller overall dimensions of the transformer, and because the winding arrangement according to the invention also surprisingly ensures compliance with the short-circuit voltage is advantageously influenced.
  • Radially above the winding layer 1 are, for example, winding layers 2 and 3 connected to diverters (not shown).
  • an insulating wall 4 is provided, which separates axially parallel cooling channels 5 from one another.
  • the cooling channels 5 are kept open by spacer strips 7.
  • the winding conductor ends of the last turn of each of the winding layers 1, 2 and 3 are led out of the winding arrangement in the form of axles 8.
  • the leads 8 carry an additional insulation 9 above the normal winding conductor insulation, which is usually designed for the full rated voltage of the transformer.
  • the additional insulation 9 extends into the respective end turn of the associated winding layer 1, 2 or 3 and is held there by, for example, three pairs of spacer strips 7.
  • the thickness of the additional insulation 9 is at nominal voltages from 200 kV in the order of the thickness of the spacer strips 7, so that the exit of the cooling channels 5 in the area of the diversion 8 would be practically closed without special measures in the area of the discharge line 8 via about two or more sectors formed by spacer strips 7.
  • the annular cross is maintained for them to strive for sectional shape.
  • the spacer strips 7 have so far been made reinforced over the entire winding circumference wherever they clamp a winding layer provided with a lead 8.
  • the spacer strips 7 are now reinforced, which abut one end of an additional insulation 9.
  • These reinforced spacer strips 7 have a shoulder 6 at their end abutting the additional insulation 9, by means of which they are adapted to the additional insulation 9 protruding into the cooling channel 5.
  • the spacer strips 7 which are supported on the reinforced spacer strips 7 via the insulating wall 4 are designed to be correspondingly weaker than the spacer strips 7 in the normal circumferential range.
  • the spacer strips 7 may also have different thicknesses within the diversion area.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

1. A layer winding for transformers provided at its front end with leads (8) equipped with an additional insulation (9) in addition to the winding conductor insulation, and which consists of winding layers (1, 2, 3) radially-flanked on both sides by further winding layers, and with cooling channels (5) separated from one another by an insulating wall (4) between the winding layers (1, 2, 3), arranged radially one-above-another, and kept open by spacer strips (7), characterised in that - the insulating walls (4), which each flank a lead (8), are curved in the region of this lead (8) radially inwards or outwards, as the case may be, from that winding layer (1, 2, 3) which supports the latter, by special spacer strips (7') along their entire axial length ; - that in contrast to the winding layer (1, 2 or 3) which retains its cross-sectional circular ring shape, the insulating walls (4) differ in their cross-sectional shape which is otherwise likewise circularly ring-shaped ; - that the shortest distance between the insulating wall (4) and the additional insulation (9) of the lead (8) in the region of said lead is smaller than the internal width between the insulating wall (4) and the adjacent winding layer (1, 2 or 3) in this region but is equal to at least half the internal width between the insulating wall (4) and the adjacent winding layer (1, 2 or 3) outside of this region ; and - that the sum of the radial thickness - corresponding to the internal width - of the spacer strips (7, 7') which flank the same insulating wall (4) both internally and externally is equal in the normal peripheral zone and in the region of the leads, where the thickness of the thicker, special spacer strips (7') is reduced at their end adjacent to the additional insulation (9) of the lead (8) by the thickness of the additional insulation (9).

Description

Die Erfindung betrifft eine Lagenwicklung für Transformatoren mit stirnseitigen, eine Zusatzisolierung zur Wickelleiterisolierung aufweisenden Ausleitungen aus radial auf beiden Seiten von weiteren Wicklungslagen flankierten Wicklungslagen und mit zwischen den Wicklungslagen durch eine Isolierwand voneinander getrennten, radial übereinanderliegenden durch Distanzleisten offengehaltenen Kühlkanälen.The invention relates to a layer winding for transformers with end-side, additional insulation for winding conductor insulation having rejections from winding layers flanked radially on both sides by further winding layers and with cooling channels separated between the winding layers by an insulating wall and kept open radially one above the other by spacer strips.

Derartige Lagenwicklungen sind durch die DE-OS 22 46 398 bekannt.Such layer windings are known from DE-OS 22 46 398.

Darüber hinaus sind durch die DE-OS 30 35 262 für Transformatorlagenwicklungen verstärkt isolierte Ausleitungen bekannt, deren verstärkte Isolierung aus unverleimt aufeinandergewickelten Kreppapierlagen besteht, die zusammen mit dem Ausleitungsleiter faltenfrei abgebogen werden können.In addition, from DE-OS 30 35 262 for transformer layer windings, increasingly isolated rejects are known, the reinforced insulation of which is composed of crepe paper layers which are wound together without glue and which, together with the rejection conductor, can be bent without wrinkles.

Zum Herausführen der verstärkt isolierten Ausleitungen, insbesondere von innenliegenden Wicklungslagen, werden bisher üblicherweise am ganzen Wicklungsumfang dickere, den Abmessungen der Ausleitungen angepaßte Distanz- oder Ölkanalleisten vorgesehen, um einen ausreichenden Kühl- ölfluß zu gewährleisten. Die Verwendung der dickeren Distanzleisten verursacht Durchmesservergrößerungen am Wicklungsaufbau und dadurch Gewichtserhöhungen mit der Folge eines erhöhten Werkstoffverbrauchs und mit steigenden Transportabmessungen.Up to now, thicker spacer strips or oil channel strips adapted to the dimensions of the diversions have usually been provided on the entire winding circumference to lead out the reinforced insulated leads, in particular from inner winding layers, in order to ensure a sufficient flow of cooling oil. The use of the thicker spacer bars causes diameter increases on the winding structure and thus weight increases with the consequence of an increased material consumption and with increasing transport dimensions.

Der Erfindung liegt daher die Aufgabe zugrunde, den Aufbau von Lagenwicklungen der eingangs genannten Art so zu verbessern, daß die von der Wicklung beanspruchte Querschnittsfläche kleiner wird als bei bisher üblichem Aufbau, wobei jedoch die sichere Abführung der entstehenden Verlustwärme aus der Wicklung ebenso gewährleistet bleiben muß wie die für die Kurzschlußfestigkeit wesentliche kreisringförmige Querschnittsform der einzelnen Wicklungslagen.The invention is therefore based on the object to improve the structure of layer windings of the type mentioned in such a way that the cross-sectional area claimed by the winding becomes smaller than in the previously conventional structure, but the safe dissipation of the heat losses generated from the winding must also be ensured like the circular cross-sectional shape of the individual winding layers which is essential for the short-circuit strength.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst,

  • - daß die jeweils eine Ausleitung flankierenden Isolierwände im Bereich dieser Ausleitung von der diese tragenden Wicklungslage durch besondere Distanzleisten über ihre gesamte axiale Länge radial nach innen oder nach außen abgewölbt sind,
  • - daß die Isolierwände hierdurch im Gegensatz zu der im Querschnitt ihre Kreisringform behaltenden Wicklungslage von ihrem im übrigen ebenfalls kreisringförmigen Querschnitt abweichen,
  • - daß der kleinste Abstand zwischen der Isolierwand und der Zusatzisolierung der Ausleitung in deren Bereich zwar kleiner ist als die lichte Weite zwischen der Isolierwand und der benachbarten Wicklungslage in diesem Bereich, jedoch mindestens halb so groß ist wie die lichte Weite zwischen der Isolierwand und der benachbarten Wicklungslage außerhalb diesem Bereich und
  • - daß die Summe der der lichten Weite entsprechenden radialen Dicke der dieselbe Isolierwand von innen und von außen flankierenden Distanzleisten im Normalumfangsbereich und im Ausleitungsbereich gleich ist, wobei die dickeren Distanzleisten an ihrem an der Zusatzisolierung der Ausleitung anliegenden Ende in ihrer Dicke um die Dicke der Zusatzisolierung abgesetzt sind.
According to the invention, this object is achieved by
  • that the insulating walls flanking a diversion in the region of this diversion are curved radially inwards or outwards from their winding position by special spacer strips over their entire axial length,
  • that the insulating walls, in contrast to the winding layer which retains its circular cross-section, differ from its cross-sectional cross-section,
  • - That the smallest distance between the insulating wall and the additional insulation of the rejection in their area is smaller than the clear width between the insulating wall and the adjacent winding layer in this area, but is at least half as large as the clear width between the insulating wall and the neighboring one Winding position outside this area and
  • - That the sum of the radial thickness corresponding to the clear width of the same insulating wall flanking the inside and outside of the spacer strips is the same in the normal circumferential area and in the diversion area, the thicker spacer strips at their end resting on the additional insulation of the diversion in thickness by the thickness of the additional insulation are discontinued.

Zweckmäßige Ausgestaltungen der Erfindung bestehen darin, daß die Isolierwände auch an jeder Stelle des Ausleitungsbereiches in gleicher Richtung gekrümmt sind wie im Normalumfangsbereich und daß die Zusatzisolierung jeder der Ausleitungen jeweils über zwei oder mehrere Distanzleisten in Umfangsrichtung auf der ersten Windung der Wicklungslage fortgesetzt ist und daß sich die Abweichungen von der Kreisform im Querschnitt der Isolierwände einschließlich der Übergangszonen je Ausleitung über mehrere Distanzleisten in Umfangsrichtung der Wicklung erstrecken.Appropriate embodiments of the invention exist there Rin that the insulating walls are curved in the same direction as in the normal circumferential area at every point of the diversion area and that the additional insulation of each of the diversions is continued in each case over two or more spacer strips in the circumferential direction on the first turn of the winding layer and that the deviations from the circular shape extend in cross-section of the insulating walls including the transition zones per diversion over several spacer strips in the circumferential direction of the winding.

Nach weiteren vorteilhaften Ausgestaltungsmerkmalen der Erfindung bestehen die Isolierwände aus aufeinandergewickelten und punktweise miteinander verklebten Papierbahnen, ist jeweils ein Ende jeder Distanzleiste mit der anliegenden Isolierwand verklebt und ist die Zusatzisolierung der Ausleitungen in sich elastischer als die Isolierwände und die Wicklungslagen.According to further advantageous design features of the invention, the insulating walls consist of paper webs which are wound onto one another and glued to one another point by point, one end of each spacer strip is glued to the adjacent insulating wall, and the additional insulation of the leads is more elastic in itself than the insulating walls and the winding layers.

Der erfindungsgemäße Wicklungsaufbau ist sehr vorteilhaft, weil er durch den Verzicht auf eine Verstärkung der die Wicklungslagen mit Ausleitungen flankierenden Kühlkanäle zu einem kleineren Gesamtquerschnitt der Wicklungsanordnung und damit auch zu kleineren Gesamtabmessungen des Transformators führt und weil darüber hinaus überraschenderweise durch die erfindungsgemäße Wicklungsanordnung die Einhaltung der Kurzschlußspannung vorteilhaft beeinflußt ist.The winding structure according to the invention is very advantageous because, by not having to reinforce the cooling channels flanking the winding layers with leads, it leads to a smaller overall cross-section of the winding arrangement and thus also to smaller overall dimensions of the transformer, and because the winding arrangement according to the invention also surprisingly ensures compliance with the short-circuit voltage is advantageously influenced.

Ein Ausführungsbeispiel der Erfindung wird anhand einer Zeichnung näher erläutert. Es zeigen:

  • Fig. 1 einen Ausschnitt aus einer Draufsicht von drei Wicklungslagen in stark verkleinertem Maßstab und
  • Fig. 2 bis 5 Schnitte durch die Stirnseiten dieser drei Wicklungslagen entlang der Linien II-II, III-III, IV-IV und V-V in Fig. 1 in weniger stark verkleinertem Maßstab.
An embodiment of the invention is explained in more detail with reference to a drawing. Show it:
  • Fig. 1 shows a detail of a plan view of three winding layers in a greatly reduced scale and
  • 2 to 5 sections through the end faces of these three winding layers along the lines II-II, III-III, IV-IV and VV in Fig. 1 on a smaller scale.

Einander entsprechende Bauteile sind in allen Figuren mit gleichen Bezugszeichen versehen.Corresponding components are provided with the same reference symbols in all figures.

Eine Transformatorlagenwicklung mit einer Vielzahl von nicht dargestellten Wicklungslagen ist radial nach außen durch eine oberste Wicklungslage 1 abgeschlossen. Radial über der Wicklungslage 1 liegen beispielsweise mit nicht dargestellten Umstellern verbundene Wicklungslagen 2 und 3. Zwischen den jeweils radial aufeinanderfolgenden Wicklungslagen 1, 2 und 3 ist je eine Isolierwand 4 vorgesehen, die achsparallele Kühlkanäle 5 voneinander trennt. Die Kühlkanäle 5 sind durch Distanzleisten 7 offengehalten.A transformer layer winding with a plurality of winding layers, not shown, is closed radially outwards by an uppermost winding layer 1. Radially above the winding layer 1 are, for example, winding layers 2 and 3 connected to diverters (not shown). Between the respective radially successive winding layers 1, 2 and 3, an insulating wall 4 is provided, which separates axially parallel cooling channels 5 from one another. The cooling channels 5 are kept open by spacer strips 7.

Die Wickelleiterenden der jeweils letzten Windung jeder der Wicklungslagen 1, 2 und 3 sind als Ausleitungen 8 achsparallel aus der Wicklungsanordnung herausgeführt. Die Ausleitungen 8 tragen über der normalen Wickelleiterisolierung eine Zusatzisolierung 9, die üblicherweise für die volle Nennspannung des Transformators ausgelegt ist. Die Zusatzisolierung 9 erstreckt sich bis in die jeweilige Endwindung der zugehörigen Wicklungslage 1, 2 oder 3 und wird dort von beispielsweise drei Paar Distanzleisten 7 gehalten.The winding conductor ends of the last turn of each of the winding layers 1, 2 and 3 are led out of the winding arrangement in the form of axles 8. The leads 8 carry an additional insulation 9 above the normal winding conductor insulation, which is usually designed for the full rated voltage of the transformer. The additional insulation 9 extends into the respective end turn of the associated winding layer 1, 2 or 3 and is held there by, for example, three pairs of spacer strips 7.

Die Dicke der Zusatzisolierung 9 liegt bei Nennspannungen ab 200 kV in der Größenordnung der Dicke der Distanzleisten 7, so daß der Ausgang der Kühlkanäle 5 in dem Bereich der Ausleitung 8 über etwa zwei oder mehr von Distanzleisten 7 gebildeten Sektoren ohne besondere Maßnahmen praktisch verschlossen wäre. Zur Beherrschung der an der Wicklung auftretenden Kurzschlußkräfte ist für diese eine Beibehaltung der kreisringförmigen Querschnittsform anzustreben. Aus diesem Grund werden bisher die Distanzleisten 7 überall dort über den gesamten Wicklungsumfang verstärkt ausgeführt, wo sie eine mit einer Ausleitung 8 versehene Wicklungslage einspannen.The thickness of the additional insulation 9 is at nominal voltages from 200 kV in the order of the thickness of the spacer strips 7, so that the exit of the cooling channels 5 in the area of the diversion 8 would be practically closed without special measures in the area of the discharge line 8 via about two or more sectors formed by spacer strips 7. To control the short-circuit forces occurring on the winding, the annular cross is maintained for them to strive for sectional shape. For this reason, the spacer strips 7 have so far been made reinforced over the entire winding circumference wherever they clamp a winding layer provided with a lead 8.

Erfindungsgemäß sind nun lediglich die Distanzleisten 7 verstärkt, die mit einem ihrer Enden an einer Zusatzisolierung 9 anliegen. Diese verstärkten Distanzleisten 7 weisen an ihrem an der Zusatzisolierung 9 anliegenden Ende einen Absatz 6 auf, durch den sie an die in den Kühlkanal 5 vorstehende Zusatzisolierung 9 angepaßt sind. Dagegen sind die sich über die Isolierwand 4 an den verstärkten Distanzleisten 7 abstützenden Distanzleisten 7 um ein entsprechendes Maß schwächer als die Distanzleisten 7 im Normalumfangsbereich ausgeführt. Zur Beibehaltung der Krümmungsrichtung der Isolierwände 4 sind die Distanzleisten 7 gegebenenfalls auch innerhalb des Ausleitungsbereiches in unterschiedlichen Dicken ausgeführt.According to the invention, only the spacer strips 7 are now reinforced, which abut one end of an additional insulation 9. These reinforced spacer strips 7 have a shoulder 6 at their end abutting the additional insulation 9, by means of which they are adapted to the additional insulation 9 protruding into the cooling channel 5. In contrast, the spacer strips 7 which are supported on the reinforced spacer strips 7 via the insulating wall 4 are designed to be correspondingly weaker than the spacer strips 7 in the normal circumferential range. In order to maintain the direction of curvature of the insulating walls 4, the spacer strips 7 may also have different thicknesses within the diversion area.

Durch diese Variation der Dicke der Distanzleisten 7 wird zwar der kreisringförmige Querschnitt für die Wicklungslagen 1, 2 und 3 beibehalten, jedoch für die im Bereich der Ausleitungen 8 jeweils von der betreffenden Wicklungslage 1, 2 oder 3 abgewölbten Isolierwände 4 aufgegeben. Diese Anordnung ermöglicht daher auch für Wicklungslagen mit verstärkt isolierten Ausleitungen 8 eine Beibehaltung des normalen Lagenabstandes und gewährleistet dadurch eine sehr gute Raumausnutzung. Daneben hat diese Anordnung überraschenderweise auch einen sehr vorteilhaften Einfluß auf die Kurzschlußspannung.Through this variation in the thickness of the spacer strips 7, the circular cross section is retained for the winding layers 1, 2 and 3, but is given up for the insulating walls 4 which curve away from the respective winding layer 1, 2 or 3 in the area of the outlets 8. This arrangement therefore makes it possible to maintain the normal layer spacing even for winding layers with reinforced insulated leads 8 and thus ensures very good use of space. In addition, this arrangement surprisingly also has a very advantageous influence on the short-circuit voltage.

Claims (6)

1. Lagenwicklung für Transformatoren mit stirnseitigen, eine Zusatzisolierung (9) zur Wickelleiterisolierung aufweisenden Ausleitungen (8) aus radial auf beiden Seiten von weiteren Wicklungslagen flankierten Wicklungslagen (1, 2, 3) und mit zwischen den Wicklungslagen (1, 2, 3) durch eine Isolierwand (4) voneinander getrennten, radial übereinanderliegenden, durch Distanzleisten (7) offengehaltenen Kühlkanälen (5), dadurch gekennzeichnet, - daß die jeweils eine Ausleitung (8) flankierenden Isolierwände (4) im Bereich dieser Ausleitung (8) von der diese tragenden Wicklungslage (1, 2, 3) durch besondere Distanzleisten (7) über ihre gesamte axiale Länge radial nach innen bzw. nach außen abgewölbt sind, - daß die Isolierwände (4) hierdurch im Gegensatz zu der im Querschnitt ihre Kreisringform behaltenden Wicklungslage (1, 2 oder 3) von ihrem im übrigen ebenfalls kreisringförmigen Querschnitt abweichen, - daß der kleinste Abstand zwischen der Isolierwand (4) und der Zusatzisolierung (9) der Ausleitung (8) in deren Bereich zwar kleiner ist als die lichte Weite zwischen der Isolierwand (4) und der benachbarten Wicklungslage (1, 2 oder 3) in diesem Bereich, jedoch mindestens halb so groß ist wie die lichte Weite zwischen der Isolierwand (4) und der benachbarten Wicklungslage (1, 2 oder 3) außerhalb dieses Bereiches und - daß die Summe der der lichten Weite entsprechenden radialen Dicke der dieselbe Isolierwand (4) von innen und von außen flankierenden Distanzleisten (7) im Normalumfangsbereich und im Ausleitungsbereich gleich ist, wobei die stärkeren Distanzleisten (7) an ihrem an der Zusatzisolierung (9) der Ausleitung (8) anliegenden Ende in ihrer Dicke um die Dicke der Zusatzisolierung (9) abgesetzt sind. 1. Layer winding for transformers with end-side, additional insulation (9) for winding conductor insulation rejects (8) from winding layers (1, 2, 3) flanked radially on both sides by further winding layers and with between the winding layers (1, 2, 3) an insulating wall (4) separated from one another, radially one above the other and kept open by spacer strips (7) cooling channels (5), characterized in that - That each a diversion (8) flanking insulating walls (4) in the region of this diversion (8) from the winding layer (1, 2, 3) carrying these through special spacer strips (7) over their entire axial length radially inwards or outwards are arched outside, - That the insulating walls (4) differ in contrast to the winding layer (1, 2 or 3) which retains its circular cross-section from its otherwise circular cross-section, - That the smallest distance between the insulating wall (4) and the additional insulation (9) of the diversion (8) in their area is smaller than the clear width between the insulating wall (4) and the adjacent winding layer (1, 2 or 3) in this area, but at least half as large as the clear width between the insulating wall (4) and the adjacent winding layer (1, 2 or 3) outside of this area and - That the sum of the radial thickness corresponding to the inside width of the same insulating wall (4) from the inside and from the outside flanking spacer strips (7) is the same in the normal circumferential area and in the discharge area, the stronger spacer strips (7) on their on the additional insulation (9) the end of the lead (8) is offset in thickness by the thickness of the additional insulation (9). 2. Lagenwicklung nach Anspruch 1, dadurch gekennzeichnet , daß die Isolierwände (4) auch an jeder Stelle des Ausleitungsbereiches in gleicher Richtung gekrümmt sind wie im Normalumfangsbereich.2. Layer winding according to claim 1, characterized in that the insulating walls (4) are also curved at any point in the diversion area in the same direction as in the normal circumferential area. 3. Lagenwicklung nach Anspruch 1 und 2, dadurch gekennzeichnet , daß die Zusatzisolierung (9) jeder der Ausleitungen (8) jeweils über zwei oder mehrere Distanzleisten (7) in Umfangsrichtung auf der ersten Windung der Wicklungslage (1, 2, 3) fortgesetzt ist und daß sich die Abweichungen von der Kreisform im Querschnitt der Isolierwände (4) einschließlich der Übergangszonen je Ausleitung über mehrere Distanzleisten (7) in Umfangsrichtung erstrecken.3. Layer winding according to claim 1 and 2, characterized in that the additional insulation (9) of each of the outlets (8) is continued in each case via two or more spacer strips (7) in the circumferential direction on the first turn of the winding layer (1, 2, 3) and that the deviations from the circular shape in cross-section of the insulating walls (4) including the transition zones for each diversion extend over a plurality of spacer strips (7) in the circumferential direction. 4. Lagenwicklung nach Anspruch 1 bis 3, dadurch gekennzeichnet , daß die Isolierwände (4) aus aufeinandergewickelten und punktweise miteinander verklebten Papierbahnen bestehen.4. Layer winding according to claim 1 to 3, characterized in that the insulating walls (4) consist of paper webs which are wound onto one another and glued together point by point. 5. Lagenwicklung nach Anspruch 1 bis 4, dadurch gekennzeichnet , daß jeweils ein Ende jeder Distanzleiste (7) mit der anliegenden Isolierwand (4) verklebt ist.5. layer winding according to claim 1 to 4, characterized in that one end of each spacer bar (7) is glued to the adjacent insulating wall (4). 6. Lagenwicklung nach Anspruch 1 bis 5, dadurch gekennzeichnet , daß die Zusatzisolierung (9) der Ausleitungen (8) in sich elastischer ist als die Isolierwände (4) und die Wicklungslagen (1, 2, 3).6. Layer winding according to claim 1 to 5, characterized in that the additional insulation (9) of the outlets (8) is more elastic in itself than the insulating walls (4) and the winding layers (1, 2, 3).
EP85109066A 1984-08-02 1985-07-19 Layer winding for transformers Expired EP0170170B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85109066T ATE30650T1 (en) 1984-08-02 1985-07-19 LAYER WINDING FOR TRANSFORMERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843428613 DE3428613A1 (en) 1984-08-02 1984-08-02 LAYER DEVELOPMENT FOR TRANSFORMERS
DE3428613 1984-08-02

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Publication Number Publication Date
EP0170170A1 true EP0170170A1 (en) 1986-02-05
EP0170170B1 EP0170170B1 (en) 1987-11-04

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EP85109066A Expired EP0170170B1 (en) 1984-08-02 1985-07-19 Layer winding for transformers

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EP (1) EP0170170B1 (en)
AT (1) ATE30650T1 (en)
BR (1) BR8503642A (en)
DE (2) DE3428613A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130662A (en) * 1990-03-12 1992-07-14 Ntp Elektronik A/S Audio signal switching system
CN103270560A (en) * 2011-01-04 2013-08-28 Abb技术有限公司 Transformer winding with cooling channel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2246398A1 (en) * 1972-09-21 1974-03-28 Transformatoren Union Ag LAYER WINDING FOR TRANSFORMERS AND REACTORS
AT332934B (en) * 1973-12-08 1976-10-25 Transformatoren Union Ag INSULATING ARRANGEMENT FOR EXTRACTIONS FROM HIGH VOLTAGE WINDINGS IN TRANSFORMERS AND REACTORS
DE3035262A1 (en) * 1980-09-18 1982-03-25 Transformatoren Union Ag, 7000 Stuttgart Terminations for heavy duty transformer windings - has paper protective tubes applied before bending outwards and with adhesive sealing
EP0056580A1 (en) * 1981-01-16 1982-07-28 Smit Transformatoren B.V. Winding for an air-cooled dry transformer or reactor having spacers in the air channels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2246398A1 (en) * 1972-09-21 1974-03-28 Transformatoren Union Ag LAYER WINDING FOR TRANSFORMERS AND REACTORS
AT332934B (en) * 1973-12-08 1976-10-25 Transformatoren Union Ag INSULATING ARRANGEMENT FOR EXTRACTIONS FROM HIGH VOLTAGE WINDINGS IN TRANSFORMERS AND REACTORS
DE3035262A1 (en) * 1980-09-18 1982-03-25 Transformatoren Union Ag, 7000 Stuttgart Terminations for heavy duty transformer windings - has paper protective tubes applied before bending outwards and with adhesive sealing
EP0056580A1 (en) * 1981-01-16 1982-07-28 Smit Transformatoren B.V. Winding for an air-cooled dry transformer or reactor having spacers in the air channels

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130662A (en) * 1990-03-12 1992-07-14 Ntp Elektronik A/S Audio signal switching system
CN103270560A (en) * 2011-01-04 2013-08-28 Abb技术有限公司 Transformer winding with cooling channel
CN103270560B (en) * 2011-01-04 2016-04-20 Abb技术有限公司 Transformer winding and transformer

Also Published As

Publication number Publication date
DE3560927D1 (en) 1987-12-10
ATE30650T1 (en) 1987-11-15
DE3428613A1 (en) 1986-02-13
EP0170170B1 (en) 1987-11-04
BR8503642A (en) 1986-05-06

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