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EP0102941B1 - Winding with transposed conductors - Google Patents

Winding with transposed conductors Download PDF

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Publication number
EP0102941B1
EP0102941B1 EP83890143A EP83890143A EP0102941B1 EP 0102941 B1 EP0102941 B1 EP 0102941B1 EP 83890143 A EP83890143 A EP 83890143A EP 83890143 A EP83890143 A EP 83890143A EP 0102941 B1 EP0102941 B1 EP 0102941B1
Authority
EP
European Patent Office
Prior art keywords
connecting segments
coils
insulating
connecting webs
material plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83890143A
Other languages
German (de)
French (fr)
Other versions
EP0102941A2 (en
EP0102941A3 (en
Inventor
Peter Bogensberger
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.)
Andritz Hydro GmbH Austria
Original Assignee
Andritz Hydro GmbH Austria
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 Andritz Hydro GmbH Austria filed Critical Andritz Hydro GmbH Austria
Publication of EP0102941A2 publication Critical patent/EP0102941A2/en
Publication of EP0102941A3 publication Critical patent/EP0102941A3/en
Application granted granted Critical
Publication of EP0102941B1 publication Critical patent/EP0102941B1/en
Expired 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
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • 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

Definitions

  • the invention relates to a wire conductor winding for a furnace transformer consisting of a main and an additional transformer, which is arranged on the secondary side and has coils which enclose the two iron legs of the main and additional transformer with two parallel connecting webs lying between them.
  • the voltage setting for furnace transformers is made on a case-by-case basis in the DC link of the transformer by connecting and disconnecting the DC link voltage.
  • the secondary coils of the main transformer and the secondary coils of the additional transformer each have only one turn.
  • the result of this is that the iron legs of the main and additional transformer are encompassed by one and the same secondary coil.
  • the result is a «violin-shaped curved secondary winding that consists of only one secondary coil. This can be made of solid copper sheet, which extends over the entire axial winding length or is divided several times. In those cases where it is necessary to know about main u. Subdividing the additional transformer extending secondary winding results in a large number of axially superimposed «conductor-violin spools» which are electrically connected in parallel.
  • the above type of bracing cannot be used because the wire conductor cannot be drilled through.
  • the secondary winding of the furnace transformer is made up of several stranded conductor coils, each with one turn, screws or similar connecting parts can often no longer be inserted between the individual coils due to space constraints. The distance between the individual coils is normally only given by the thickness of the winding jaws.
  • the object of the invention is therefore to create a winding including bracing, which is provided especially for twisted pair conductors, and the twisted pair conductor rods also do not have to be drilled through.
  • the object of the invention is thus achieved in that the connecting webs of a coil run with a selected normal distance, preferably parallel, to a longitudinal axis which connects the centers of the two iron legs of the main and additional transformer and that further coils are rotated by 180 ° about the longitudinal axis are arranged, the normal distance of the connecting webs of the individual coils from the longitudinal axis, preferably alternating, to the left and to the right of this and that perpendicularly between the inner connecting webs an insulating material plate, the thickness of which is twice the normal distance, is arranged and that one further insulating material plate each the vertical outer surfaces of the connecting webs is provided and is releasably connected to the insulating plate between the internal connecting webs.
  • the insulating material plate has threaded holes between the inner connecting webs above and below the contact surfaces of these connecting webs and screws, preferably insulated and non-magnetic, are inserted from the outside of the insulating material plates on the vertical outer surfaces of the connecting webs Threaded holes are screwed in.
  • This configuration has the advantage that the insulating boards can be drilled together on the vertical outer surfaces of the connecting webs and then serve as templates for the position of the threaded holes in the insulating board between the internal connecting webs.
  • the two legs 1, 2 are enclosed by the individual wire conductor coils 5, 6, each with two closely spaced and intermediate connecting webs 7, 8.
  • the individual, preferably rectangular, copper rods 9 of the twisted conductor coils 5, 6 are insulated from one another by a lacquer coating or a banding.
  • the ends 10, 11 of each Conductor coils 5, 6 are connected in parallel, which results in the type of winding.
  • the connecting webs 12, 13, 14, 15 of the twisted conductor coils 5, 6 run parallel to a longitudinal axis 16 which intersects the center points 17, 18 of the iron legs 1, 2 of the main and additional transformer.
  • Individual stranded conductor coils 5, 6 are now arranged rotated by 180 ° about the longitudinal axis 16 and in such a way that the connecting webs 12, 13 of one stranded conductor coil 5 appear on the left, the next on the right and the next but one again on the left of the longitudinal axis 16.
  • This 180 ° rotation of the individual wire conductor coils 5, 6 in the region of the connecting webs 12.13.14.15.19.20. 21.22. 23. 24 can be seen particularly well from the sectional illustration in FIG. 2.
  • a further insulating material plate 32, 33 is arranged on both sides which are made of the same material as the insulating plate 26.
  • Each of these insulating material plates 32, 33 has through holes 34 above and below the outer surfaces 27, 28, 29, 30, 31 of the connecting webs 13, 14, 20, 22, 24 or the contact surfaces of the insulating material plates 32, 33.
  • Continuous threaded holes 35 are further provided in the insulating material plate 26 between the internal connecting webs 12, 15, 19, 21, 23. These are arranged above and below the contact surfaces 36, 37, 38, 39, 40 of the internal connecting webs 12, 15, 19, 21, 23.
  • hexagon screws 41 are inserted from the outside through the through holes 34 into the insulating material plates 32, 33 and screwed into the respective threaded holes 35 in the insulating material plate 26, as a result of which the connecting webs 12, 13, 14, 15, 19, 20, 21, 22, 23, 24 be held in place.
  • This tension thus absorbs the expanding forces during the short circuit in the connecting webs 12, 13, 14, 15, 19, 20, 21, 22, 23, 24 of the individual stranded conductor coils 5, 6.
  • the thickness of the insulating material plate 26, which is decisive for the maximum screwing depth of the hexagon screws 41 into the threaded holes 35, is determined by the double normal distance 25 or by the distance of the internal connecting webs 12, 15, 19, 21, 23 from one another. This normal distance 25 can be varied in accordance with the expansion forces that occur and the minimum screw-in depth of the hexagon screws 41 that is necessary as a result.
  • hexagon screws 41 are non-magnetic and insulated, since this will surely prevent excessive heating and voltage flashover between the connecting webs 12, 13, 14, 15, 19, 20, 21, 22, 23, 24 and the hexagon screws 41 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Insulated Conductors (AREA)
  • Non-Insulated Conductors (AREA)

Description

Die Erfindung betrifft eine Drilleiterwicklung für einen, aus einem Haupt- und einem Zusatztransformator bestehenden Ofentransformator, welche sekundärseitig angeordnet ist und Spulen aufweist, die die beiden Eisenschenkel von Haupt-und Zusatztransformator mit zwei dazwischen liegenden parallelen Verbindungsstegen umschließen.The invention relates to a wire conductor winding for a furnace transformer consisting of a main and an additional transformer, which is arranged on the secondary side and has coils which enclose the two iron legs of the main and additional transformer with two parallel connecting webs lying between them.

Die Spannungseinstellung bei Ofentransformatoren wird fallweise im Zwischenkreis des Transformators durch Zu- und Gegenschaltung der Zwischenkreisspannung vorgenommen.The voltage setting for furnace transformers is made on a case-by-case basis in the DC link of the transformer by connecting and disconnecting the DC link voltage.

In manchen Sonderfällen haben die Sekundärspulen des Haupttransformators und die Sekundärspulen des Zusatztransformators jeweils nur eine Windung. Dadurch ergibt sich, daß die Eisenschenkel von Haupt- und Zusatztransformator von ein und derselben Sekundärspule umfaßt werden. Es entsteht somit eine « geigenförmig gebogene Sekundärwicklung, die nur aus einer Sekundärspule besteht. Diese kann aus massivem Kupferblech hergestellt sein, welches sich über die ganze axiale Wicklungslänge erstreckt oder mehrmals unterteilt ist. In jenen Fällen, bei denen es notwendig ist, die sich über Haupt- u. Zusatztransformator erstreckende Sekundärwicklung zu unterteilen, entstehen eine Vielzahl von axial übereinanderliegenden « Drilleiter-Geigenspuien". welche elektrisch parallel geschaltet werden.In some special cases, the secondary coils of the main transformer and the secondary coils of the additional transformer each have only one turn. The result of this is that the iron legs of the main and additional transformer are encompassed by one and the same secondary coil. The result is a «violin-shaped curved secondary winding that consists of only one secondary coil. This can be made of solid copper sheet, which extends over the entire axial winding length or is divided several times. In those cases where it is necessary to know about main u. Subdividing the additional transformer extending secondary winding results in a large number of axially superimposed «conductor-violin spools» which are electrically connected in parallel.

Wenn die Sekundärspule vom Kurzschlußstrom durchflossen wird, entstehen in den zur Längsachse symmetrischen und eng beisammenliegenden Verbindungsstegen der Spule zwischen Haupt- und Zusatztransformator beträchtliche expandierende Kräfte, welche durch entsprechende Verspannungen aufgenommen werden müssen. Bei den Spulen aus massivem Kupferblech sind zur Verspannung an den Verbindungsstegen Isolationsplatten angeordnet. Mit isolierten Schrauben werden sodann die beiden Verbindungsstege mit den Isolationsplatten zusammengeschraubt. Hierbei müssen die Verbindungsstege jedoch durchbohrt werden. Dies ist bei den Spulen aus massivem Kupferblech ohne Schwierigkeiten möglich.If the secondary coil is flowed through by the short-circuit current, considerable expanding forces arise in the connecting webs of the coil between the main and additional transformers, which are symmetrical and close to one another and which have to be absorbed by appropriate tension. In the case of coils made of solid copper sheet, insulation plates are arranged on the connecting webs for tensioning. The two connecting webs are then screwed together with the insulation plates using insulated screws. Here, however, the connecting webs must be pierced. This is possible without difficulty with the coils made of solid copper sheet.

Werden für die Spulen jedoch Drilleiter verwendet, läßt sich die obige Art der Verspannung nicht anwenden, da der Drilleiter nicht durchbohrt werden kann. Ist die Sekundärwicklung des Ofentransformators aus mehreren Drilleiterspulen mit je einer Windung aufgebaut, können oft aus Platzgründen zwischen den einzelnen Spulen keine Schrauben oder ähnliche Verbindungsteile mehr durchgesteckt werden. Der Abstand der einzelnen Spulen voneinander ist nämlich normalerweise nur durch die Dicke von Wicklungsbackerln gegeben.However, if wire conductors are used for the coils, the above type of bracing cannot be used because the wire conductor cannot be drilled through. If the secondary winding of the furnace transformer is made up of several stranded conductor coils, each with one turn, screws or similar connecting parts can often no longer be inserted between the individual coils due to space constraints. The distance between the individual coils is normally only given by the thickness of the winding jaws.

Die Aufgabe der Erfindung besteht daher darin, eine Wicklung samt Verspannung zu schaffen, welche speziell für Drilleiter vorgesehen ist und wobei die Drilleiterstäbe auch nicht durchbohrt werden müssen.The object of the invention is therefore to create a winding including bracing, which is provided especially for twisted pair conductors, and the twisted pair conductor rods also do not have to be drilled through.

Die Aufgabe der Erfindung wird somit dadurch gelöst, daß die Verbindungsstege einer Spule mit einem gewählten Normalabstand, vorzugsweise parallel, zu einer Längsachse verlaufen, welche die Mittelpunkte der beiden Eisenschenkel von Haupt- und Zusatztransformator verbindet und daß weitere Spulen um die Längsachse um 180° gedreht angeordnet sind, wobei der Normalabstand der Verbindungsstege der einzelnen Spulen von der Längsachse, vorzugsweise abwechselnd, links und rechts von dieser auftritt und daß senkrecht zwischen den innenliegenden Verbindungsstegen eine Isolierstoffplatte, deren Dicke der doppelte Normalabstand ist, angeordnet ist und daß je eine weitere Isolierstoffplatte an den senkrechten Außenflächen der Verbindungsstege vorgesehen ist und mit der Isolierstoffplatte zwischen den innenliegenden Verbindungsstegen lösbar verbunden ist.The object of the invention is thus achieved in that the connecting webs of a coil run with a selected normal distance, preferably parallel, to a longitudinal axis which connects the centers of the two iron legs of the main and additional transformer and that further coils are rotated by 180 ° about the longitudinal axis are arranged, the normal distance of the connecting webs of the individual coils from the longitudinal axis, preferably alternating, to the left and to the right of this and that perpendicularly between the inner connecting webs an insulating material plate, the thickness of which is twice the normal distance, is arranged and that one further insulating material plate each the vertical outer surfaces of the connecting webs is provided and is releasably connected to the insulating plate between the internal connecting webs.

Dadurch ist es erstmals möglich, auch bei Drilleiterwicklungen eine sehr stabile Verspannung der Verbindungsstege vorzusehen, welche einfach in der Herstellung ist. Weiters ist auch die geänderte Form der einzelnen festen Drilleiterspulen leicht herzustellen.This makes it possible for the first time to provide a very stable bracing of the connecting webs in the case of twisted pair windings, which is simple to manufacture. Furthermore, the changed shape of the individual fixed conductor coils is easy to manufacture.

Nach einer Weiterbildung der Erfindung, weist die Isolierstoffplatte zwischen den innenliegenden Verbindungsstegen ober- und unterhalb der Auflageflächen dieser Verbindungsstege Gewindelöcher auf und sind von der Außenseite der Isolierstoffplatten an den senkrechten Außenflächen der Verbindungsstege durch Löcher Schrauben, vorzugsweise isolierte und unmagnetische, durchgesteckt, die in die Gewindelöcher eingeschraubt sind.According to a further development of the invention, the insulating material plate has threaded holes between the inner connecting webs above and below the contact surfaces of these connecting webs and screws, preferably insulated and non-magnetic, are inserted from the outside of the insulating material plates on the vertical outer surfaces of the connecting webs Threaded holes are screwed in.

Diese Ausgestaltung bringt den Vorteil, daß die Isolierstoffplatten an den senkrechten Außenflächen der Verbindungsstege gemeinsam gebohrt werden können und sodann als Schablonen für die Lage der Gewindelöcher in der Isolierstoffplatte zwischen den innenliegenden Verbindungsstegen dienen.This configuration has the advantage that the insulating boards can be drilled together on the vertical outer surfaces of the connecting webs and then serve as templates for the position of the threaded holes in the insulating board between the internal connecting webs.

An Hand zweier Zeichnungen wird die Erfindung nun noch näher erläutert.

  • Die Fig. 1 zeigt die Draufsicht auf einen ausgebauten Ofentransformator bei dem jedoch nur die Sekundärwicklung dargestellt ist und
  • Fig. 2 stellt vergrößert einen Schnitt gemäß der Linie A-B in Fig. 1 dar.
The invention will now be explained in more detail with reference to two drawings.
  • Fig. 1 shows the top view of a removed furnace transformer in which, however, only the secondary winding is shown and
  • Fig. 2 shows an enlarged section along the line AB in Fig. 1.

Aus der Fig. 1 ist schematisch ein Schenkel 1 des Haupttransformators und weiters schematisch ein Schenkel 2 des Zusatztransformators dargestellt.1 schematically shows one leg 1 of the main transformer and further schematically shows one leg 2 of the additional transformer.

Weiters sind die beiden Schenkel 1, 2 von den einzelnen Drilleiterspulen 5, 6 mit je zwei eng beisammenliegenden und dazwischenliegenden Verbindungsstegen 7, 8 umschlossen. Die einzelnen, vorzugsweise rechteckigen, Kupferstäbe 9 der Drilleiterspulen 5, 6 sind gegeneinander durch einen Lacküberzug oder eine Umbandelung isoliert. Die Enden 10, 11 der einzelnen Drilleiterspulen 5, 6 sind parallel geschaltet, wodurch sich die Wicklungsart ergibt. Die Verbindungsstege 12, 13, 14, 15 der Drilleiterspulen 5, 6 verlaufen parallel zu einer Längsachse 16, die die Mittelpunkte 17, 18 der Eisenschenkel 1, 2 von Haupt- und Zusatztransformator schneidet. Einzelne Drilleiterspulen 5, 6 werden nun um 180° um die Längsachse 16 gedreht angeordnet und zwar so, daß die Verbindungsstege 12, 13 der einen Drilleiterspule 5 links, der nächsten rechts und der übernächste wieder links von der Längsachse 16 auftreten. Diese 180° Drehung der einzelnen Drilleiterspulen 5, 6 im Bereich der Verbindungsstege 12.13.14.15.19,20. 21.22. 23. 24 ist aus der Schnittdarstellung in Fig. 2 besonders gut ersichtlich. Durch die Anordnung der Verbindungsstege 12, 13 parallel zur Längsachse 16, wodurch sich eine Normalabstand 25 ergibt, welcher durch die 180°-Drehung auch bei der nachfolgenden Drilleiterspule 6 auftritt, jedoch auf der gegenüberliegenden Seite der Längsachse 16, entsteht zwischen den innenliegenden Verbindungsstegen 12, 15, 19, 21, 23 benachbarter Drilleiterspulen 5, 6 ein Zwischenraum, welcher der doppelte Normalabstand 25 ist. Es ist daher erfindungsgemäß eine Isolierstoffplatte 26 aus z. B. Epoxid-Glashartgewebe, deren Dicke der doppelte Normalabstand 25 ist, zwischen den innenliegenden Verbindungsstegen 12, 15, 19, 21, 23 angeordnet. Die Breite dieser Isolierstoffplatte 26 ist durch den Abstand der Eisenschenkel 1, 2 des Haupt- und Zusatztransformators voneinander und durch den Querschnitt der Drilleiterspulen 5, 6 gegeben. Weiters ist die Länge der Isolierstoffplatte 26 durch die Anzahl der angeordneten Drilleiterspulen 5, 6 bestimmt.Furthermore, the two legs 1, 2 are enclosed by the individual wire conductor coils 5, 6, each with two closely spaced and intermediate connecting webs 7, 8. The individual, preferably rectangular, copper rods 9 of the twisted conductor coils 5, 6 are insulated from one another by a lacquer coating or a banding. The ends 10, 11 of each Conductor coils 5, 6 are connected in parallel, which results in the type of winding. The connecting webs 12, 13, 14, 15 of the twisted conductor coils 5, 6 run parallel to a longitudinal axis 16 which intersects the center points 17, 18 of the iron legs 1, 2 of the main and additional transformer. Individual stranded conductor coils 5, 6 are now arranged rotated by 180 ° about the longitudinal axis 16 and in such a way that the connecting webs 12, 13 of one stranded conductor coil 5 appear on the left, the next on the right and the next but one again on the left of the longitudinal axis 16. This 180 ° rotation of the individual wire conductor coils 5, 6 in the region of the connecting webs 12.13.14.15.19.20. 21.22. 23. 24 can be seen particularly well from the sectional illustration in FIG. 2. The arrangement of the connecting webs 12, 13 parallel to the longitudinal axis 16, which results in a normal distance 25, which also occurs in the subsequent stranded conductor coil 6 due to the 180 ° rotation, but on the opposite side of the longitudinal axis 16, arises between the internal connecting webs 12 , 15, 19, 21, 23 of adjacent twisted conductor coils 5, 6 an intermediate space which is twice the normal distance 25. It is therefore an insulating plate 26 made of z. B. epoxy glass fabric, the thickness of which is twice the normal distance 25, arranged between the internal connecting webs 12, 15, 19, 21, 23. The width of this insulating material plate 26 is given by the distance between the iron legs 1, 2 of the main and additional transformers from one another and by the cross section of the wire conductor coils 5, 6. Furthermore, the length of the insulating material plate 26 is determined by the number of arranged conductor coils 5, 6.

Aus der Schnittdarstellung in Fig. 2 ist ersichtlich, daß an den Außenflächen 27, 28, 29, 30, 31 der außenliegenden Verbindungsstege 13, 14, 20, 22, 24 der Drilleiterspulen 5, 6 beidseitig je eine weitere Isolierstoffplatte 32, 33 angordnet ist, die aus dem selben Material wie die Isolierstoffplatte 26 hergestellt sind. Jede dieser Isolierstoffplatten 32, 33 weist ober- und unterhalb der Außenflächen 27, 28, 29, 30, 31 der Verbindungsstege 13, 14, 20, 22, 24 bzw. der Auflageflächen der Isolierstoffplatten 32, 33 Durchgangslöcher 34 auf. Weiters sind in der Isolierstoffplatte 26 zwischen den innenliegenden Verbindungsstegen 12, 15, 19, 21, 23 durchgehende Gewindelöcher 35 vorgesehen. Diese sind ober- und unterhalb der Auflageflächen 36, 37, 38, 39, 40 der innenliegenden Verbindungsstege 12, 15, 19, 21, 23, angeordnet. Weiters sind Sechskantschrauben 41 von außen durch die Durchgangslöcher34 in die Isolierstoffplatten 32, 33 gesteckt und in die jeweiligen Gewindelöcher 35 in der Isolierstoffplatte 26 eingeschraubt, wodurch die Verbindungsstege 12, 13, 14, 15, 19, 20, 21, 22, 23, 24 in ihrer Lage festgehalten werden. Es nimmt somit diese Verspannung die expandierenden Kräfte während des Kurzschlusses in den Verbindungsstegen 12, 13. 14, 15, 19, 20. 21, 22, 23, 24 der einzelnen Drilleiterspulen 5, 6 auf.From the sectional view in Fig. 2 it can be seen that on the outer surfaces 27, 28, 29, 30, 31 of the outer connecting webs 13, 14, 20, 22, 24 of the stranded conductor coils 5, 6, a further insulating material plate 32, 33 is arranged on both sides which are made of the same material as the insulating plate 26. Each of these insulating material plates 32, 33 has through holes 34 above and below the outer surfaces 27, 28, 29, 30, 31 of the connecting webs 13, 14, 20, 22, 24 or the contact surfaces of the insulating material plates 32, 33. Continuous threaded holes 35 are further provided in the insulating material plate 26 between the internal connecting webs 12, 15, 19, 21, 23. These are arranged above and below the contact surfaces 36, 37, 38, 39, 40 of the internal connecting webs 12, 15, 19, 21, 23. Furthermore, hexagon screws 41 are inserted from the outside through the through holes 34 into the insulating material plates 32, 33 and screwed into the respective threaded holes 35 in the insulating material plate 26, as a result of which the connecting webs 12, 13, 14, 15, 19, 20, 21, 22, 23, 24 be held in place. This tension thus absorbs the expanding forces during the short circuit in the connecting webs 12, 13, 14, 15, 19, 20, 21, 22, 23, 24 of the individual stranded conductor coils 5, 6.

Die Dicke der Isolierstoffplatte 26, welche für die maximale Einschraubtiefe der Sechskantschrauben 41 in die Gewindelöcher 35 maßgebend ist, ist durch den doppelten Normalabstand 25 bzw. durch den Abstand der innenliegenden Verbindungsstege 12, 15, 19, 21, 23 voneinander festgelegt. Dieser Normalabstand 25 kann entsprechend der auftretenden Expansionskräfte und der dadurch notwendigen Mindesteinschraubtiefe der Sechskantschrauben 41 variiert werden.The thickness of the insulating material plate 26, which is decisive for the maximum screwing depth of the hexagon screws 41 into the threaded holes 35, is determined by the double normal distance 25 or by the distance of the internal connecting webs 12, 15, 19, 21, 23 from one another. This normal distance 25 can be varied in accordance with the expansion forces that occur and the minimum screw-in depth of the hexagon screws 41 that is necessary as a result.

Von Vorteil ist auch, wenn die Sechskantschrauben 41 unmagnetisch und isoliert sind, da dadurch mit Sicherheit übermäßige Erwärmung und Spannungsüberschlag zwischen den Verbindungsstegen 12, 13, 14, 15, 19, 20, 21, 22, 23, 24 und den Sechskantschrauben 41 verhindert wird.It is also advantageous if the hexagon screws 41 are non-magnetic and insulated, since this will surely prevent excessive heating and voltage flashover between the connecting webs 12, 13, 14, 15, 19, 20, 21, 22, 23, 24 and the hexagon screws 41 .

Entsprechend dem Haltevermögen der Schrauben 41 können nun mehrere Spulen 5 untereinander links, und die gleiche Anzahl Spulen 6 rechts von der Isolierstoffplatte 26 angeordnet werden. Dies geschieht abwechselnd über die ganze axiale Wicklungslänge und setzt eine entsprechend teilbare Gesamtspulenzahl voraus.According to the holding capacity of the screws 41, several coils 5 can now be arranged one below the other on the left, and the same number of coils 6 can be arranged on the right of the insulating plate 26. This takes place alternately over the entire axial winding length and requires a correspondingly divisible total number of coils.

Claims (2)

1. Twisted conductor winding for a furnace transformer consisting of a main and an additional transformer, which winding is arranged on the secondary side and has coils (5, 6) which enclose the two iron legs (1, 2) of main and additional transformer with two intermediate parallel connecting segments (12-15, 19-24), characterized in that the connecting segments (12, 13, 14, 15, 19, 20, 21, 22, 23, 24) of one coil (5, 6) run at a selected normal distance (25), preferably in parallel, with respect to a longitudinal axis (16) which joins the centre points (17,18) of the two iron legs (1, 2) of main and additional transformer and that further coils (5, 6) are arranged to be rotated by 180° around the longitudinal axis (16), the normal distance (25) of the connecting segments (12, 13, 14, 15, 19, 20, 21, 22, 23, 24) of the individual coils (5, 6) from the longitudinal axis (16) occuring to the left and to the right of this axis, preferably alternately, and that an insulating-material plate (26), the thickness of which is twice the normal distance (25) is arranged perpendicularly between the inside connecting segments (12, 15, 19, 21, 23) and that one further insulating-material plate (32, 33) is provided each at the perpendicular outside surfaces (27, 28, 29, 30,31) of the connecting segments (13, 14, 20, 22, 24) and is detachably connected to the insulating-material plate (26) between the inside connecting segments (12, 15, 19, 21, 23).
2. Twisted-conductor winding according to Claim 1, characterized in that the insulating-material plate (26) exhibits threaded holes (35) between the inside connecting segments (12, 15, 19, 21, 23) above and below the support surfaces (36, 37, 38, 39, 40) of these connecting segments (12, 15, 19, 21, 23) and that screws (41), preferably insulated and non magnetic, are inserted from the outside of the insulating-material plates (32, 33) at the perpendicular outside surfaces (27, 28, 29, 30, 31) of the connecting segments (13,14, 20, 22, 24) through holes (34) which screws are screwed into the threaded holes (35).
EP83890143A 1982-09-02 1983-09-02 Winding with transposed conductors Expired EP0102941B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3292/82 1982-09-02
AT0329282A AT378278B (en) 1982-09-02 1982-09-02 OVEN TRANSFORMER CONSISTING OF A MAIN AND ADDITIONAL TRANSFORMER

Publications (3)

Publication Number Publication Date
EP0102941A2 EP0102941A2 (en) 1984-03-14
EP0102941A3 EP0102941A3 (en) 1985-01-09
EP0102941B1 true EP0102941B1 (en) 1986-12-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP83890143A Expired EP0102941B1 (en) 1982-09-02 1983-09-02 Winding with transposed conductors

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Country Link
EP (1) EP0102941B1 (en)
AT (1) AT378278B (en)
DE (1) DE3368146D1 (en)
NO (1) NO160106C (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1220028B (en) * 1962-12-21 1966-06-30 Bbc Brown Boveri & Cie High-current transformer, in particular furnace transformer, with intermediate circuit regulation
DE2136211C3 (en) * 1971-07-20 1979-03-22 Transformatoren Union Ag, 7000 Stuttgart High-current transformer unit, especially for supplying electric furnaces
DE2736092A1 (en) * 1977-08-10 1979-02-22 Transformatoren Union Ag Transformer winding for very high currents - consists of two turns in form of printed circuits bent, clamped and connected with each other

Also Published As

Publication number Publication date
NO833136L (en) 1984-03-05
NO160106C (en) 1989-03-08
ATA329282A (en) 1984-11-15
DE3368146D1 (en) 1987-01-15
NO160106B (en) 1988-11-28
EP0102941A2 (en) 1984-03-14
EP0102941A3 (en) 1985-01-09
AT378278B (en) 1985-07-10

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