EP0035637A1 - Tap changer with potential switch for tapped transformers - Google Patents

Tap changer with potential switch for tapped transformers Download PDF

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Publication number
EP0035637A1
EP0035637A1 EP81100595A EP81100595A EP0035637A1 EP 0035637 A1 EP0035637 A1 EP 0035637A1 EP 81100595 A EP81100595 A EP 81100595A EP 81100595 A EP81100595 A EP 81100595A EP 0035637 A1 EP0035637 A1 EP 0035637A1
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EP
European Patent Office
Prior art keywords
contacts
selector
fork
actuating
movable
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
EP81100595A
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German (de)
French (fr)
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EP0035637B1 (en
Inventor
Hans Stark
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.)
Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Priority to AT81100595T priority Critical patent/ATE6708T1/en
Publication of EP0035637A1 publication Critical patent/EP0035637A1/en
Application granted granted Critical
Publication of EP0035637B1 publication Critical patent/EP0035637B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0027—Operating mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/44—Driving mechanisms, i.e. for transmitting driving force to the contacts using Geneva movement

Definitions

  • the invention relates to a tap changer according to the preamble of claim 1.
  • tap changers are known: DE-AS 28 15 736.
  • the object of the invention is to improve the step switch mentioned at the outset, in particular with regard to the drive for the polarity contacts. This object is achieved by the means specified in the characterizing part of patent claim 1.
  • the advantage achieved with the invention is in particular that the actuation of the polarity contacts is now triggered directly by the actuating disc of the tap changer, which also initiates the turning actuation.
  • the actuation of the polarity contacts is therefore no longer derived from the sequence of movements of the reversing contacts or from the sequence of movements of the selector contacts, but directly from the movement of the drive pulley of the tap changer. This not only leads to a constructive simplification of the drive of the polarity contacts, but also to greater accuracy in the movement sequence. Because the previously used functional series connection of the motion sequences: tapping the movement of the polarity contacts from the motion sequence at the reversing contacts leads due to inevitable tolerances to a lower accuracy compared to the functional parallel connection of the movement processes now used.
  • the two actuating forks for actuating the turner and polarity contacts directly one above the other on one and the same journal, in order then to be able to actuate both actuating forks with the same roller seated on the drive pulley of the step selector.
  • the fork openings for the engagement of the actuating roller are appropriately arranged so that they are offset from one another in the rest positions, such that the actuating roller first runs into the fork opening of the actuating fork of the polarity switch when the switching step is carried out.
  • a further simplification is obtained if the two actuating forks are mounted on the same journal, on which the crank for the gradual actuation of the drive disks of the step selector is mounted.
  • the fixed polarity contacts do not need to be distributed over the entire height of the tap selector or over the entire length of their insulating rod, but they can be e.g. be placed in the upper third of the level selector. This makes it possible to design the movable polarity contact as a rod mounted on one side, the free end of which is intended for contacting and which can be pivoted parallel to the insulating rod of the fixed polarity contacts.
  • the new tap changer essentially consists of the actual tap selector 1 with the drop-out gear 2, which works together with a diverter switch (not shown), a turner 3 arranged on the side of the tap selector and the polarity switch 4 also arranged on the side.
  • the tap selector 1 is designed as a rod cage.
  • Provided within the cage are two concentric insulating tubes 9, 10 which are mounted in the lower and upper cage rings 5 and 6 and which can be rotated step by step in a circle. When the insulating tubes are rotated step by step, contact bridges 11 are moved in the usual way from one to the next fixed step contact 8.
  • each insulating tube 9, 10 is provided with a drive disk 12, 13, which has a recess 14 for each switching step, in which a crank 15, which can be rotated through 180 ° for each switching step, engages alternately with a roller 16, 17.
  • the crank 15 is mounted in a frame 18 which is firmly connected to the upper cage ring 6.
  • the frame 18 merges into a boom 19, and a same boom 20 is provided on the lower cage ring 5.
  • the two arms 19, 20 carry two vertical insulating bars 21, 22, on which the fixed reversing contacts 23, 24 are seated.
  • the switching shaft 25 of the turner, which carries the movable turner contacts 26, is also mounted in the arms 19, 20.
  • the selector shaft 25 of the turner is at its top End firmly connected with a crank 27.
  • the actuating fork 30 is mounted on the upper cage ring 6 by means of a shaft 31.
  • This roller 33 is of course arranged on the drive pulley 13 in such a way that the reverser is actuated only when the corresponding switching step of the actual step selector is carried out.
  • the two arms 19 and 20 each have an arm 34, 35, to which a further insulating rod 36 is attached.
  • This insulating rod 36 carries the fixed polarity contacts 37.
  • a movable polarity contact 38 cooperates with the fixed polarity contacts 37.
  • the movable polarity contact 38 is mounted in the upper arm 19 by means of a shaft journal 39 and, moreover, is designed as an angled rod, the free end 38 'of which for contacting runs parallel to the insulating rods (36, 21, 22).
  • a crank 42 provided with two Maltese cuts 40, 41 is fixedly connected to the movable polarity contact.
  • Two cams 43, 44 of a driver wheel 45 engage alternately in the Maltese cuts 40, 41 of the crank 42 and are mounted on the shaft end 46 of the selector shaft 25 of the turner is.
  • the driver wheel 45 is provided on its lower side with a ring gear 47, and with this ring gear a further operating fork 48 works together, one end of which is designed as a toothed segment 49 and the fork opening 50 also for the entry of the roller seated on the drive pulley 13 of the selector 33 is provided.
  • the actuating fork 48 is mounted on the same shaft 31, which also serves to mount the actuating fork 30 for actuating the turner.
  • the function is as follows: the drive disk 13 is rotated by the crank 15 through the angle CC in the direction of the arrow to carry out the selection step (FIG. 2).
  • the roller 33 seated on the drive disk 13 first runs into the fork opening 50 of the upper actuating fork, which is responsible for actuating the polarity switch 4.
  • the pivoting movement of the actuating fork 48 is transmitted to the driver wheel 45 via the toothed segment 49.
  • the driver wheel 45 performs an idling movement in that the cam 43 completely leaves the Maltese cut 40 and swivels around, while the cam 44 also swivels around and enters the Maltese cut 41 of the crank 42 of the movable polarity contact 38.
  • the roller 33 of the drive pulley 13 now leaves the fork opening 32 of the actuating fork 30, which is responsible for the turning actuation, so that this operating fork comes to rest.
  • the actuating fork 48 is taken along a little, so that in this phase of the movement sequence, the movement transmitted to the driver wheel 45 leads to further pivoting of the crank 42 and thus to the opening of the polarity switch. It is immediately clear that the same sequence of movements takes place in reverse order when returning.

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

1. Tap switch for tapped transfomers with tap selector (1) constructed as cylindrical rod cage and a reverser (3), which is arranged laterally of the tap selector (1) and consists of a lower arm (20) and an upper arm (19), which are each connected with the cage rings (5, 6) of the tap selector (1) and have insulating roods (21, 22) fastened thereat, which carry the fixed reverser contacts (23, 24), and of a switching shaft (25), which is borne in the arms (19, 20) carried the movable reverser contacts (26) and which is actuable by means of a first fork (30), which is borne at the upper cage ring (6) and into which engages a dog (33) sitting on a drive sheave (13) of the selector (1), wherein polarity contacts (37) the movable contacts (38) of which are actuable together with the reverser contacts (26), for the tying of a centre tap of the cap winding to a certain potential are arranged on a further insulating rod (36) likewise laterally of the tap selector (1), characterized thereby, that the movable polarity contacts (38) are actuable by means of a further actuating fork (48) borne at the upper cage ring (6), wherein a roller (33) likewise sitting on the drive sheave (13) of the selector engages into this further actuating fork (48).

Description

Die Erfindung bezieht sich auf einen Stufenschalter gemäß Oberbegriff des Patentanspruches 1. Derartige Stufenschalter sind bekannt: DE-AS 28 15 736.The invention relates to a tap changer according to the preamble of claim 1. Such tap changers are known: DE-AS 28 15 736.

Aufgabe der Erfindung ist es, den eingangs genannten Stufenschalter, insbesondere bezüglich des Antriebes für die Polungskontakte, zu verbessern. Diese Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Patentanspruches 1 angegebenen Mittel gelöst.The object of the invention is to improve the step switch mentioned at the outset, in particular with regard to the drive for the polarity contacts. This object is achieved by the means specified in the characterizing part of patent claim 1.

Der mit der Erfindung erzielte Vorteil liegt insbesondere darin, daß das Betätigen der Polungskontakte nunmehr unmittelbar von der Betätigungsscheibe des Stufenwählers, die auch die Wenderbetätigung einleitet, ausgelöst wird. Das Betätigen der Polungskontakte wird also nicht mehr wie bisher vom Bewegungsablauf der Wenderkontakte oder auch vom Bewegungsablauf der Wählerkontakte abgeleitet, sondern unmittelbar von der Bewegung der Antriebsscheibe des Stufenwählers. Dies führt nicht nur zu einer konstruktiven Vereinfachung des Antriebes der Polungskontakte, sondern auch zu einer größeren Genauigkeit im Bewegungsablauf. Denn die bisher angewandte funktionelle Reihenschaltung der Bewegungsabläufe: Abgriff der Bewegung der Polungskontakte vom Bewegungsablauf an den Wenderkontakten, führt infolge unvermeidlicher Toleranzen zu einer geringeren Genauigkeit gegenüber der nun angewandten funktionellen Parallelschaltung der Bewegungsvorgänge.The advantage achieved with the invention is in particular that the actuation of the polarity contacts is now triggered directly by the actuating disc of the tap changer, which also initiates the turning actuation. The actuation of the polarity contacts is therefore no longer derived from the sequence of movements of the reversing contacts or from the sequence of movements of the selector contacts, but directly from the movement of the drive pulley of the tap changer. This not only leads to a constructive simplification of the drive of the polarity contacts, but also to greater accuracy in the movement sequence. Because the previously used functional series connection of the motion sequences: tapping the movement of the polarity contacts from the motion sequence at the reversing contacts leads due to inevitable tolerances to a lower accuracy compared to the functional parallel connection of the movement processes now used.

In besonders zweckmäßiger Weise ist es dabei möglich, die beiden Betätigungsgabeln für das Betätigen von Wender und Polungskontakten unmittelbar übereinander auf ein und demselben Lagerzapfen zu lagern, um beide Betätigungsgabeln dann mit derselben an der Antriebsscheibe des Stufenwählers sitzenden Rolle betätigen zu können. Hierbei werden zweckmäßig die Gabelöffnungen für das Eingreifen der Betätigungsrolle so angeordnet, daß sie in den Ruhestellungen gegeneinander versetzt sind, derart, daß die Betätigungsrolle beim Ausführen des Schaltschrittes als erstes in die Gabelöffnung der Betätigungsgabel des Polungsschalters einläuft. Eine weitere Vereinfachung ergibt sich, wenn die beiden Betätigungsgabeln auf demselben Lagerzapfen gelagert werden, auf dem auch die Kurbel für das schrittweise Betätigen der Antriebsscheiben des Stufenwählers gelagert ist. Die feststehenden Polungskontakte brauchen sich hierbei nicht auf der gesamten Höhe des Stufenwählers bzw. auf der gesamten Länge ihres Isolierstabes zu verteilen, sondern sie können entsprechend ihrer Spannungsbeanspruchung z.B. im oberen Drittel des Stufenwählers angeordnet werden. Hierdurch wird es möglich,den beweglichen Polungskontakt als einseitig gelagerte Stange auszubilden, deren zur Kontaktgabe bestimmtes freies Ende parallel zum Isolierstab der feststehenden Polungskontakte verschwenkbar ist.In a particularly expedient way, it is possible to mount the two actuating forks for actuating the turner and polarity contacts directly one above the other on one and the same journal, in order then to be able to actuate both actuating forks with the same roller seated on the drive pulley of the step selector. Here, the fork openings for the engagement of the actuating roller are appropriately arranged so that they are offset from one another in the rest positions, such that the actuating roller first runs into the fork opening of the actuating fork of the polarity switch when the switching step is carried out. A further simplification is obtained if the two actuating forks are mounted on the same journal, on which the crank for the gradual actuation of the drive disks of the step selector is mounted. The fixed polarity contacts do not need to be distributed over the entire height of the tap selector or over the entire length of their insulating rod, but they can be e.g. be placed in the upper third of the level selector. This makes it possible to design the movable polarity contact as a rod mounted on one side, the free end of which is intended for contacting and which can be pivoted parallel to the insulating rod of the fixed polarity contacts.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachstehend näher beschrieben. Es zeigen:

  • Figur 1 den Stufenwähler des neuen Stufenschalters in der Seitenansicht,
  • Figur 2 bis 5 einen Querschnitt durch die Antriebsmittel für Wender und Polungskontakte in verschiedenen Phasen des Bewegungsablaufes.
An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it:
  • Figure 1 shows the level selector of the new level switch in side view,
  • Figure 2 to 5 shows a cross section through the drive means for turning and polarity contacts in different phases of the movement.

Der neue Stufenschalter besteht im wesentlichen aus dem eigentlichen Stufenwähler 1 mit dem Aussetzgetriebe 2, der mit einem nicht dargestellten Lastumschalter zusammenarbeitet, aus einem seitlich vom Stufenwähler angeordneten Wender 3 und aus dem ebenfalls seitlich dazu angeordneten Polungsschalter 4. Der Stufenwähler 1 ist als Stabkäfig ausgebildet. An einem unteren Käfigring 5 und an einem oberen Käfigring 6 sitzen die im Kreis angeordneten Isolierstäbe 7, die die feststehenden Stufenkontakte 8 tragen. Innerhalb des Käfigs sind zwei konzentrische Isolierrohre 9, 10, die im unteren und oberen Käfigring 5 bzw. 6 gelagert sind und die schrittweise im Kreis drehbar sind, vorgesehen. Beim schrittweisen Drehen der Isolierrohre werden auf übliche Weise Kontaktbrücken 11 von einem zum nächsten feststehenden Stufenkontakt 8 bewegt. Jedes Isolierrohr 9, 10 ist hierzu mit einer Antriebsscheibe 12, 13 versehen, die für jeden Schaltschritt je eine Ausnehmung 14 besitzen, in die jeweils eine für jeden Schaltschritt um 180° drehbare Kurbel 15 mit je einer Rolle 16, 17 abwechselnd eingreifen. Die Kurbel 15 ist in einem Rahmen 18 gelagert, der mit dem oberen Käfigring 6 fest verbunden ist. Der Rahmen 18 geht in einen Ausleger 19 über, und ein gleicher Ausleger 20 ist am unteren Käfigring 5 vorgesehen. Die beiden Ausleger 19, 20 tragen zwei senkrechte Isolierstäbe 21, 22, an welchen die feststehenden Wenderkontakte 23, 24 sitzen. In den Auslegern 19, 20 ist ferner die Schaltwelle 25 des Wenders, welche die beweglichen Wenderkontakte 26 trägt, gelagert. Die Schaltwelle 25 des Wenders ist an ihrem oberen Ende mit einer Kurbel 27 fest verbunden. Diese Kurbel 27, die dem Betätigen der Schaltwelle 25 des Wenders dient, ist mit einer Ausnehmung 28 versehen, in die eine Rolle 29 einer Betätigungsgabel 30 eingreift. Die Betätigungsgabel 30 ist mittels einer Welle 31 am oberen Käfigring 6 gelagert. In die Gabelöffnung 32 greift eine an der Antriebsscheibe 13 des einen Isolierrohres 10 sitzende Rolle 33 ein. Diese Rolle 33 ist natürlich auf der Antriebsscheibe 13 so angeordnet, daß ein Betätigen des Wenders nur erfolgt, wenn der entsprechende Schaltschritt des eigentlichen Stufenwählers ausgeführt wird.The new tap changer essentially consists of the actual tap selector 1 with the drop-out gear 2, which works together with a diverter switch (not shown), a turner 3 arranged on the side of the tap selector and the polarity switch 4 also arranged on the side. The tap selector 1 is designed as a rod cage. On a lower cage ring 5 and on an upper cage ring 6 there are the insulated bars 7 arranged in a circle, which carry the fixed step contacts 8. Provided within the cage are two concentric insulating tubes 9, 10 which are mounted in the lower and upper cage rings 5 and 6 and which can be rotated step by step in a circle. When the insulating tubes are rotated step by step, contact bridges 11 are moved in the usual way from one to the next fixed step contact 8. For this purpose, each insulating tube 9, 10 is provided with a drive disk 12, 13, which has a recess 14 for each switching step, in which a crank 15, which can be rotated through 180 ° for each switching step, engages alternately with a roller 16, 17. The crank 15 is mounted in a frame 18 which is firmly connected to the upper cage ring 6. The frame 18 merges into a boom 19, and a same boom 20 is provided on the lower cage ring 5. The two arms 19, 20 carry two vertical insulating bars 21, 22, on which the fixed reversing contacts 23, 24 are seated. The switching shaft 25 of the turner, which carries the movable turner contacts 26, is also mounted in the arms 19, 20. The selector shaft 25 of the turner is at its top End firmly connected with a crank 27. This crank 27, which serves to actuate the selector shaft 25 of the turner, is provided with a recess 28 into which a roller 29 of an actuating fork 30 engages. The actuating fork 30 is mounted on the upper cage ring 6 by means of a shaft 31. A roller 33 seated on the drive pulley 13 of the one insulating tube 10 engages in the fork opening 32. This roller 33 is of course arranged on the drive pulley 13 in such a way that the reverser is actuated only when the corresponding switching step of the actual step selector is carried out.

Die beiden Ausleger 19 und 20 besitzen je einen Arm 34, 35, an welchen ein weiterer Isolierstab 36 befestigt ist. Dieser Isolierstab 36 trägt die feststehenden Polungskontakte 37. Mit den feststehenden Polungskontakten 37 arbeitet ein beweglicher Polungskontakt 38 zusammen. Der bewegliche Polungskontakt 38 ist mittels eines Wellenzapfens 39 im oberen Ausleger 19 gelagert und im übrigen als abgewinkelte Stange ausgebildet, deren freies zur Kontaktgabe bestimmtes Ende 38' parallel zu den Isolierstäben (36, 21,22) verläuft. Mit dem beweglichen Polungskontakt fest verbunden ist eine mit zwei Maltesereinschnitten 40, 41 versehene Kurbel 42. In die Maltesereinschnitte 40, 41 der Kurbel 42 greifen wechselweise zwei Nocken 43, 44 eines Treiberrades 45 ein, welches auf dem Wellenende 46 der Schaltwelle 25 des Wenders gelagert ist. Das Treiberrad 45 ist an seiner unteren Seite mit einem Zahnkranz 47 versehen, und mit diesem Zahnkranz arbeitet eine weitere Betätigungsgabel 48 zusammen, deren eines Ende als Zahnsegment 49 ausgebildet ist und deren Gabelöffnung 50 ebenfalls für den Einlauf der an der Antriebsscheibe 13 des Wählers sitzenden Rolle 33 vorgesehen ist. Die Betätigungsgabel 48 ist auf derselben Welle 31 gelagert, die auch der Lagerung der Betätigungsgabel 30 für das Betätigen des Wenders dient.The two arms 19 and 20 each have an arm 34, 35, to which a further insulating rod 36 is attached. This insulating rod 36 carries the fixed polarity contacts 37. A movable polarity contact 38 cooperates with the fixed polarity contacts 37. The movable polarity contact 38 is mounted in the upper arm 19 by means of a shaft journal 39 and, moreover, is designed as an angled rod, the free end 38 'of which for contacting runs parallel to the insulating rods (36, 21, 22). A crank 42 provided with two Maltese cuts 40, 41 is fixedly connected to the movable polarity contact. Two cams 43, 44 of a driver wheel 45 engage alternately in the Maltese cuts 40, 41 of the crank 42 and are mounted on the shaft end 46 of the selector shaft 25 of the turner is. The driver wheel 45 is provided on its lower side with a ring gear 47, and with this ring gear a further operating fork 48 works together, one end of which is designed as a toothed segment 49 and the fork opening 50 also for the entry of the roller seated on the drive pulley 13 of the selector 33 is provided. The actuating fork 48 is mounted on the same shaft 31, which also serves to mount the actuating fork 30 for actuating the turner.

Bei Betrachtung des für die Wenderbetätigung maßgebenden Schaltschrittes am Stufenwähler ist die Funktion folgende: Die Antriebsscheibe 13 wird zur Ausführung des Wählerschrittes mittels der Kurbel 15 um den Winkel CC in Pfeilrichtung gedreht (Fig. 2). Hierbei läuft die an der Antriebsscheibe 13 sitzende Rolle 33 als erstes in die Gabelöffnung 50 der oberen Betätigungsgabel, die für das Betätigen des Polungsschalters 4 zuständig ist, ein. Über das Zahnsegment 49 wird die Schwenkbewegung der Betätigungsgabel 48 auf das Treiberrad 45 übertragen. Da dieses Treiberrad 45 mit seinem Nocken 43 bereits im Maltesereinschnitt 40 der Kurbel 42 liegt, erfolgt sofort ein Verschwenken der Kurbel 42 und mit ihr ein Verschwenken des beweglichen Polungskontaktes 38, so daß dieser auf die feststehenden Polungskontakte 37 aufläuft (Fig. 3).' Inzwischen ist die Gabelöffnung 50 etwa deckungsgleich geworden mit der Gabelöffnung 32 der unteren Betätigungsgabel 30, die für das Betätigen des Wenders 3 zuständig ist. Nunmehr wird also auch die untere Betätigungsgabel 30 mitgenommen. Über ihre Rolle 29, die in einer Ausnehmung 28 der Kurbel 27 des Wenders liegt, wird die Schaltwelle 25 des Wenders 3 betätigt, so daß die beweglichen Wenderkontakte 26 vom feststehenden Wenderkontakt 23 zum feststehenden Wenderkontakt 24 überwechseln (Fig. 4). Das Treiberrad 45 führt hierbei eine Leerlaufbewegung aus, indem der Nocken 43 den Maltesereinschnitt 40 völlig verläßt und herumschwenkt, während der Nocken 44 ebenfalls herumschwenkt und in den Maltesereinschnitt 41 der Kurbel 42 des beweglichen Polungskontaktes 38 einläuft. Im weiteren Verlauf verläßt die Rolle 33 der Antriebsscheibe'13 nunmehr die Gabelöffnung 32 der Betätigungsgabel 30, die für die Wenderbetätigung zuständig ist, so daß diese Betätigungsgabel zur Ruhe kommt. Hingegen wird die Betätigungsgabel 48 noch ein Stück mitgenommen, so daß in dieser Phase des Bewegungsablaufes, die auf das Treiberrad 45 übertragene Bewegung zum weiteren Verschwenken der Kurbel 42 und damit zum Öffnen des Polungsschalters führt. Es ist ohne weiteres klar, daß beim Rücklauf der gleiche Bewegungsablauf in umgekehrter Reihenfolge stattfindet.When considering the switching step on the tap selector that is decisive for the turning operation, the function is as follows: the drive disk 13 is rotated by the crank 15 through the angle CC in the direction of the arrow to carry out the selection step (FIG. 2). In this case, the roller 33 seated on the drive disk 13 first runs into the fork opening 50 of the upper actuating fork, which is responsible for actuating the polarity switch 4. The pivoting movement of the actuating fork 48 is transmitted to the driver wheel 45 via the toothed segment 49. Since this driver wheel 45 with its cam 43 already lies in the Maltese cut 40 of the crank 42, the crank 42 is immediately pivoted and with it a pivoting of the movable polarity contact 38 so that it runs onto the fixed polarity contacts 37 (FIG. 3). ' In the meantime, the fork opening 50 has become approximately congruent with the fork opening 32 of the lower actuating fork 30, which is responsible for actuating the turner 3. So now the lower operating fork 30 is also taken. Via its roller 29, which is located in a recess 28 of the crank 27 of the turner, the switching shaft 25 of the turner 3 is actuated, so that the movable turner contacts 26 change from the fixed turner contact 23 to the fixed turner contact 24 (FIG. 4). The driver wheel 45 performs an idling movement in that the cam 43 completely leaves the Maltese cut 40 and swivels around, while the cam 44 also swivels around and enters the Maltese cut 41 of the crank 42 of the movable polarity contact 38. In the further course, the roller 33 of the drive pulley 13 now leaves the fork opening 32 of the actuating fork 30, which is responsible for the turning actuation, so that this operating fork comes to rest. On the other hand, the actuating fork 48 is taken along a little, so that in this phase of the movement sequence, the movement transmitted to the driver wheel 45 leads to further pivoting of the crank 42 and thus to the opening of the polarity switch. It is immediately clear that the same sequence of movements takes place in reverse order when returning.

Claims (5)

1. Stufenschalter für Stufentransformatoren mit einem als zylindrischen Stabkäfig ausgebildeten Stufenwähler und seitlich vom Stufenwähler angeordnetem Wender, der aus einem unteren und einem oberen jeweils mit den Käfigringen des Stufenwählers verbundenem Ausleger und daran befestigten Isolierstäben, welche die festen Wenderkontakte tragen, und aus einer in den Auslegern gelagerten Schaltwelle, welche die beweglichen Wenderkontakte trägt und welche mittels einer am oberen Käfigring gelagerten Gabel betätigbar ist, in die ein auf einer Antriebsscheibe des Wählers sitzender Nocken eingreift, besteht, wobei ebenfalls seitlich vom Stufenwähler an einem weiteren Isolierstab Polungskontakte zum Anlenken einer Mittelanzapfung der Stufenwicklung an ein bestimmtes Potential angeordnet sind, deren bewegliche Kontakte zusammen mit den Wenderkontakten betätigbar sind,
dadurch gekennzeichnet,
daß die beweglichen Polungskontakte (38) mittels einer weiteren am oberen Käfigring (6) gelagerten Betätigungsgabel betätigbar sind, wobei in diese Betätigungsgabel eine ebenfalls auf der Antriebsscheibe (13) des Wählers sitzende Rolle (33) eingreift.1.Taped switch for step transformers with a step selector designed as a cylindrical rod cage and a turner arranged on the side of the step selector, which consists of a lower and an upper arm connected to the cage rings of the step selector and insulating rods attached to it, which carry the fixed reversing contacts, and one in the Cantilever-mounted control shaft, which carries the movable reversing contacts and which can be actuated by means of a fork mounted on the upper cage ring, into which a cam seated on a drive pulley of the selector engages, with polarity contacts for connecting a center tap to the side of the step selector on another insulating rod Step winding are arranged at a certain potential, the movable contacts of which can be actuated together with the reversing contacts,
characterized,
that the movable polarity contacts (38) can be actuated by means of a further actuating fork mounted on the upper cage ring (6), a roller (33) also seated on the drive pulley (13) of the selector engaging in this actuating fork. 2. Stufenschalter nach Anspruch 1,
dadurch gekennzeichnet,
daß die Betätigungsgabel (30) für das Betätigen des Wenders (3) und die Betätigungsgabel (48) für das Betätigen der beweglichen Polungskontakte (38) auf demselben Lagerzapfen (31) gelagert sind, wobei in beide Betätigungsgabeln dieselbe Rolle (33) der Antriebsscheibe (13) des Stufenwählers (1) eingreift.2. tap changer according to claim 1,
characterized,
that the actuating fork (30) for actuating the turner (3) and the actuating fork (48) for actuating the movable polar contacts (38) are mounted on the same journal (31), the same roller (33) of the drive pulley (33) in both actuating forks 13) of the tap selector (1). 3. Stufenschalter nach Anspruch 2,
dadurch gekennzeichnet,
daß die Gabelöffnungen (32, 50) für das Eingreifen der Rolle (33) in den Ruhestellungen so gegeneinander versetzt sind, daß die Rolle beim Ausführen des Schaltschrittes als erstes in die Gabelöffnung (50) der Betätigungsgabel (48) des Polungsschalters (4) einläuft.3. tap changer according to claim 2,
characterized,
that the fork openings (32, 50) for the engagement of the roller (33) in the rest positions are offset from one another so that the roller first runs into the fork opening (50) of the actuating fork (48) of the polarity switch (4) when the switching step is carried out . 4. Stufenschalter nach Anspruch 2 oder 3,
dadurch gekennzeichnet,
daß die beiden Betätigungsgabeln (30, 48) auf demselben Lagerzapfen (31) gelagert sind, auf dem auch die Kurbel (15) für das schrittweise Betätigen der Antriebsscheiben (12, 13) des Stufenwählers gelagert ist.4. tap changer according to claim 2 or 3,
characterized,
that the two actuating forks (30, 48) are mounted on the same journal (31) on which the crank (15) for the gradual actuation of the drive disks (12, 13) of the step selector is mounted. 5. Stufenschalter nach Anspruch 1 bis 4,
dadurch gekennzeichnet,
daß der bewegliche Polungskontakt (38) aus einer abgewinkelten einseitig gelagerten metallischen Stange besteht, deren freies der Kontaktgabe dienendes Ende (38') im wesentlichen parallel zum die feststehenden Polungskontakte (37) tragenden Isolierstab (36) verschwenkbar ist.5. tap changer according to claim 1 to 4,
characterized,
that the movable polarity contact (38) consists of an angled metal rod mounted on one side, the free end (38 ') serving to make contact can be pivoted substantially parallel to the insulating rod (36) carrying the fixed polarity contacts (37).
EP81100595A 1980-03-08 1981-01-28 Tap changer with potential switch for tapped transformers Expired EP0035637B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81100595T ATE6708T1 (en) 1980-03-08 1981-01-28 TAP SWITCH WITH POLARITY CONTACTS FOR TAP TRANSFORMERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3009052A DE3009052C2 (en) 1980-03-08 1980-03-08 Step switch for step transformers
DE3009052 1980-03-08

Publications (2)

Publication Number Publication Date
EP0035637A1 true EP0035637A1 (en) 1981-09-16
EP0035637B1 EP0035637B1 (en) 1984-03-14

Family

ID=6096698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100595A Expired EP0035637B1 (en) 1980-03-08 1981-01-28 Tap changer with potential switch for tapped transformers

Country Status (4)

Country Link
EP (1) EP0035637B1 (en)
JP (1) JPS56135916A (en)
AT (1) ATE6708T1 (en)
DE (1) DE3009052C2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354423A1 (en) * 1988-08-12 1990-02-14 Maschinenfabrik Reinhausen Gmbh Cylindrical tap selector for step-down transformers having contact rings held in place by connecting wires
EP0354424A1 (en) * 1988-08-12 1990-02-14 Maschinenfabrik Reinhausen Gmbh Cylindrical tap selector for step-down transformers having contact rings fixed by connecting wires
EP0354425A1 (en) * 1988-08-12 1990-02-14 Maschinenfabrik Reinhausen Gmbh Cylindrical tap selector with a contact bridge guided by a cantilever made of insulating material
FR2660108A1 (en) * 1990-03-24 1991-09-27 Reinhausen Maschf Gmbh STEP-BY-STEP SWITCHING MECHANISM FOR SOCKET TRANSFORMER SOCKET SELECTOR.
CN102709036A (en) * 2012-03-31 2012-10-03 北京博瑞莱智能科技有限公司 Automatic capacity regulating distribution transformer and capacity regulating method thereof
CN102789911A (en) * 2012-08-20 2012-11-21 武汉泰普变压器开关有限公司 Excitation-free strip-type tapping switch
CN105788903A (en) * 2016-05-23 2016-07-20 沈阳鸿基电气有限公司 Core body device of tapping switch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106935425B (en) * 2017-03-24 2018-09-07 西安森宝电气工程有限公司 A kind of and mating polarity switch of load ratio bridging switch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2548408B2 (en) * 1975-10-29 1978-10-05 Maschinenfabrik Reinhausen Gebrueder Scheubeck Gmbh & Co Kg, 8400 Regensburg Step switch for step transformers consisting of diverter switch, step selector and preselector

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2815736C2 (en) * 1978-04-12 1980-05-29 Maschinenfabrik Reinhausen Gebrueder Scheubeck Gmbh & Co Kg, 8400 Regensburg Step switch with polarity contacts for step transformers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2548408B2 (en) * 1975-10-29 1978-10-05 Maschinenfabrik Reinhausen Gebrueder Scheubeck Gmbh & Co Kg, 8400 Regensburg Step switch for step transformers consisting of diverter switch, step selector and preselector

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354423A1 (en) * 1988-08-12 1990-02-14 Maschinenfabrik Reinhausen Gmbh Cylindrical tap selector for step-down transformers having contact rings held in place by connecting wires
EP0354424A1 (en) * 1988-08-12 1990-02-14 Maschinenfabrik Reinhausen Gmbh Cylindrical tap selector for step-down transformers having contact rings fixed by connecting wires
EP0354425A1 (en) * 1988-08-12 1990-02-14 Maschinenfabrik Reinhausen Gmbh Cylindrical tap selector with a contact bridge guided by a cantilever made of insulating material
FR2660108A1 (en) * 1990-03-24 1991-09-27 Reinhausen Maschf Gmbh STEP-BY-STEP SWITCHING MECHANISM FOR SOCKET TRANSFORMER SOCKET SELECTOR.
CN102709036A (en) * 2012-03-31 2012-10-03 北京博瑞莱智能科技有限公司 Automatic capacity regulating distribution transformer and capacity regulating method thereof
CN102709036B (en) * 2012-03-31 2015-05-20 北京博瑞莱智能科技集团有限公司 Automatic capacity regulating distribution transformer and capacity regulating method thereof
CN102789911A (en) * 2012-08-20 2012-11-21 武汉泰普变压器开关有限公司 Excitation-free strip-type tapping switch
CN102789911B (en) * 2012-08-20 2015-07-29 武汉泰普变压器开关有限公司 Without excitation bar-type tapping switch
CN105788903A (en) * 2016-05-23 2016-07-20 沈阳鸿基电气有限公司 Core body device of tapping switch
CN105788903B (en) * 2016-05-23 2017-12-22 沈阳天眼智云信息科技有限公司 The core body device of shunting switch

Also Published As

Publication number Publication date
JPS56135916A (en) 1981-10-23
DE3009052C2 (en) 1983-10-20
JPH0143443B2 (en) 1989-09-20
DE3009052A1 (en) 1981-09-17
ATE6708T1 (en) 1984-03-15
EP0035637B1 (en) 1984-03-14

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