EP0371375A2 - Cylindrical tap selector for step-down transformers actuated in one step - Google Patents

Cylindrical tap selector for step-down transformers actuated in one step Download PDF

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Publication number
EP0371375A2
EP0371375A2 EP89121510A EP89121510A EP0371375A2 EP 0371375 A2 EP0371375 A2 EP 0371375A2 EP 89121510 A EP89121510 A EP 89121510A EP 89121510 A EP89121510 A EP 89121510A EP 0371375 A2 EP0371375 A2 EP 0371375A2
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EP
European Patent Office
Prior art keywords
selector
contacts
actuated
drive
crank
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
EP89121510A
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German (de)
French (fr)
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EP0371375B1 (en
EP0371375A3 (en
Inventor
Alexander Bleibtreu
Leo Ing. Grad. Pillmeier (Fh)
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 AT89121510T priority Critical patent/ATE103734T1/en
Publication of EP0371375A2 publication Critical patent/EP0371375A2/en
Publication of EP0371375A3 publication Critical patent/EP0371375A3/en
Application granted granted Critical
Publication of EP0371375B1 publication Critical patent/EP0371375B1/en
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/12—Variable inductances or transformers of the signal type discontinuously variable, e.g. tapped
    • 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

Definitions

  • the invention relates to a single-stage cylindrical step selector for step transformers according to the preamble of claim 1.
  • Such step selectors are known CH-PS 294 482.
  • the preselector contacts are arranged below the fine selector contacts, the fixed preselector contacts on the extended selector cage.
  • the movable preselector contacts are operated on a piece of pipe which is arranged centrally below the switching tube. This piece of pipe and thus the movable selector contacts are driven by a gearbox, which is arranged between the fine selector switching tube on the underside of the same and the selector tube piece, in accordance with the selector switching program.
  • the arrangement of the preselector gear between the fine selector and the preselector as well as the need to bind the metal parts of such a gear to a fixed potential leads to an undesired extension of the entire selector.
  • there is the actual height of the selection gear which must also be added to the length of the total selector.
  • the object of the invention is to provide a tap selector of the type mentioned, in which the gear for driving the preselector is located directly in the dropout gear of the tap selector, so that in the actual selector cage no additional metal parts are necessary for driving the preselector, which the voters useless would extend.
  • the advantage achieved by the invention is, in particular, that it is possible to arrange the entire drive mechanism in the gear part of the step selector, so that metallic drive parts in the contact zones of the step selector or preselector are avoided and so that the coordination of the movement sequences of the step selector and preselector is avoided can be done in advance in the transmission part.
  • an auxiliary Geneva dial can be provided, which is only actuated by one step in every second step of the step selector, the drive crank having to make a full revolution.
  • the auxiliary Geneva disk is only half the number of cuts compared to the drive disk of the tap selector.
  • the fixed step contacts of a phase are arranged in two planes I, II, with contacts 1, 3, 5, ..., 13 lying in plane I while the Level II has contacts 2, 4, ..., K.
  • a switching tube 21 which leads movable contacts 22, 23 in each plane.
  • These movable contacts 22, 23 establish connections between the fixed step contacts 1, ..., 2, ... and associated contact rings 24, 25, the contact rings 24, 25 being connected to electrical lines 26, 27 which form an associated one , but not shown diverter switch.
  • a drive pulley 28 for actuating the switching tube 21 step by step.
  • This drive pulley 28 is designed as a Geneva plate and is actuated by means of a two-armed crank 29, a rotation of the crank 29 causing a switching step in each case.
  • the movable contacts 22, 23 are actuated here in one stage, that is to say simultaneously. In the position shown in FIG. 1, when the next switching step (direction of the arrow) is carried out, the contact 23 moves from 1 to 13 and the contact 22 remains in contact with the contact K due to the overlap.
  • the contacts (+), (-) of a preselector, movable contacts 30 of this preselector either establishing a connection of the respective center contact K with the (+) contact or (-) contact.
  • the movable contacts 30 of the preselector sit at the end of a switching shaft 31 arranged concentrically in the switching tube 21.
  • This switching shaft 31 of the preselector can be actuated as a function of the switching step of the step selector. It is provided with a crank 32, in the recess of which the cam 33 of a two-armed lever 34 can engage.
  • This two-armed lever 34 is actuated by means of a cam 35 firmly seated on the drive disk 28, the movement sequence being set such that the actuation of the preselector contacts 30 takes place as soon as the step selector has completed one revolution.
  • the movable contact 23 changes from 1 to 13, while the movable contact 22 contacts due to its overlap with the contact K remains.
  • the movable preselector contacts 30 change from (-) to (+).
  • all the gear parts, both the step selector and the preselector are combined to form a gear block in the upper area of the step selector.
  • the switching steps of step selector and preselector are coordinated with each other in the gearbox alone.
  • FIGS. 3 and 4 The basic design of the second exemplary embodiment according to FIGS. 3 and 4 corresponds to the example described above, which is why the same reference numbers as in the first example are entered here. The only difference is the design of the gearbox.
  • an auxiliary Geneva disk 36 is arranged to the side of the drive disk 28. It is equipped with exactly half of the Maltese cuts 37 as the drive pulley 28.
  • the drive crank 291 actuates both the drive disk 28 and the auxiliary Geneva disk 36.
  • a separate cam 38 is provided on the drive crank 291 for the latter.
  • a rotation of the drive crank 291 by 180 ° leads to an actuation of the drive pulley 28 by one step.
  • the drive crank 28 If the drive crank 28 is rotated by a further 180 °, the drive disk 28 performs its second switching step and at the same time the auxiliary Geneva disk 36 is also actuated by one step, the cam 38 running into a Maltese cut 37.
  • the auxiliary Geneva disk 36 is equipped with a cam 39 which engages in the crank 32 of the selector shaft 31 of the preselector in a previously determined switching step. It is clear that due to the equipment of the auxiliary Geneva disk 36 with only half the number of cuts 37 there is an increase in the switching angle for the preselection operation.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmission Devices (AREA)
  • Keying Circuit Devices (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Multiple-Way Valves (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Testing Relating To Insulation (AREA)
  • Dc-Dc Converters (AREA)

Abstract

Tap selector for step-down transformers actuated in one step, in which the fixed tap contacts of one phase are arranged in two planes on the circumference of the cylinder, and in which a central contact tube is arranged, which carries a moveable contact in each plane and can be actuated in steps by means of an actuating disc, which is seated on its upper end and in which an actuating crank having two cams offset by 180 DEG reciprocally engages. The tap selector possesses a change-over selector that can be actuated after a complete revolution and is arranged flush underneath the tap selector, the contacts of which change-over selector are situated in a further plane of the cylindrical tap selector and the moveable contacts of which changeover selector can be actuated depending upon the drive of the contacts of the tap selector. In this arrangement, the moveable change-over selector contacts (30) are seated at the end of a selector shaft (31) arranged concentrically in the contact tube (21), it being possible for the selector shaft to be actuated by means of a crank (32) seated on its upper end depending upon the actuating disc (28) of the tap selector. <IMAGE>

Description

Die Erfindung bezieht sich auf einen einstufig betätigbaren zylindrischen Stufenwähler für Stufentransformatoren gemäß Oberbegriff des Patentanspruches 1. Derartige Stufenwähler sind bekannt CH-PS 294 482.The invention relates to a single-stage cylindrical step selector for step transformers according to the preamble of claim 1. Such step selectors are known CH-PS 294 482.

Bei solchen Stufenwählern sind die Vorwählerkontakte unterhalb der Feinwählerkontakte, die festen Vorwählerkontakte am verlängerten Wählerkäfig angeordnet. Die beweglichen Vorwählerkontakte werden an einem Rohrstück, welches unterhalb des Schaltrohres zentrisch angeordnet ist, betätigt. Dieses Rohrstück und damit die beweglichen Vorwählerkontakte werden durch ein Getriebe, welches zwischen dem Feinwählerschaltrohr an der Unterseite desselben und dem Vorwählerrohrstück angeordnet ist, entsprechend dem Vorwählerschaltprogramm angetrieben. Die Anordnung des Vorwählergetriebes zwischen Feinwähler und Vorwähler sowie die Notwendigkeit, die Metallteile eines solchen Getriebes an ein festes Potential zu binden, führt zu einer unerwünschten Verlängerung des gesamten Wählers. Dazu kommt die eigentliche Bauhöhe des Vorwählergetriebes, welche ebenfalls zur Länge des Gesamtwählers hinzugerechnet werden muß.In the case of such step selectors, the preselector contacts are arranged below the fine selector contacts, the fixed preselector contacts on the extended selector cage. The movable preselector contacts are operated on a piece of pipe which is arranged centrally below the switching tube. This piece of pipe and thus the movable selector contacts are driven by a gearbox, which is arranged between the fine selector switching tube on the underside of the same and the selector tube piece, in accordance with the selector switching program. The arrangement of the preselector gear between the fine selector and the preselector as well as the need to bind the metal parts of such a gear to a fixed potential leads to an undesired extension of the entire selector. In addition, there is the actual height of the selection gear, which must also be added to the length of the total selector.

Ferner ist zu berücksichtigen, daß für die Betätigung des Vorwählers bei den hier behandelten einstufig angetriebenen Wählern mit nur einem Schaltrohr und Segmentkontakten nur der Schaltwinkel des Feinwählerantriebsrohres für den Antrieb des Vorwählers zur Verfügung steht, so daß sich für den Antrieb des Vorwählers ungünstige mechanische Übersetzungen ergeben. Bei zweistufig angetriebenen Wählern wäre demgegenüber der zur Verfügung stehende Winkel des Feinwählerantriebsrohres doppelt so groß.It should also be taken into account that only the switching angle of the fine selector drive tube is available for the actuation of the preselector for the actuation of the preselector for the actuation of the preselector in the single-stage driven voters with only one switching tube and segment contacts, so that there are unfavorable mechanical translations for driving the preselector . In contrast, in the case of two-stage driven voters, the available angle of the fine selector drive tube would be twice as large.

Aufgabe der Erfindung ist es, einen Stufenwähler der eingangs genannten Art anzugeben, bei dem das Getriebe für den Antrieb des Vorwählers direkt im Aussetzgetriebe des Stufenwählers liegt, so daß im eigentlichen Wählerkäfig keine zusätzlichen Metallteile für den Antrieb des Vorwählers notwendig werden, die den Wähler unnütz verlängern würden. Diese Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Patentanspruches 1 angegebenen Mittel gelöst.The object of the invention is to provide a tap selector of the type mentioned, in which the gear for driving the preselector is located directly in the dropout gear of the tap selector, so that in the actual selector cage no additional metal parts are necessary for driving the preselector, which the voters useless would extend. 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 es möglich ist, den gesamten Antriebsmechanismus im Getriebeteil des Stufenwählers anzuordnen, so daß metallische Antriebesteile in den Kontaktzonen von Stufenwähler bzw. Vorwähler vermieden sind und so daß die Abstimmung der Bewegungsabläufe von Stufenwähler und Vorwähler von vornherein im Getriebeteil erfolgen kann. Es besteht ferner die Möglichkeit, den Vorwähler mit einem gegenüber dem Stufenwähler vergrößerten Schrittwinkel anzutreiben. Zu diesem Zweck kann eine Hilfsmalteserscheibe vorgesehen werden, die lediglich bei jedem zweiten Schritt des Stufenwählers um einen Schritt betätigt wird, wobei die Antriebskurbel eine volle Umdrehung auszuführen hat. Die Hilfsmalteserscheibe ist hierbei gegenüber der Antriebsscheibe des Stufenwählers nur mit der halben Zahl der Einschnitte versehen.The advantage achieved by the invention is, in particular, that it is possible to arrange the entire drive mechanism in the gear part of the step selector, so that metallic drive parts in the contact zones of the step selector or preselector are avoided and so that the coordination of the movement sequences of the step selector and preselector is avoided can be done in advance in the transmission part. There is also the possibility of driving the preselector with an increased step angle compared to the step selector. For this purpose, an auxiliary Geneva dial can be provided, which is only actuated by one step in every second step of the step selector, the drive crank having to make a full revolution. The auxiliary Geneva disk is only half the number of cuts compared to the drive disk of the tap selector.

Die weitere Erläuterung der Erfindung erfolgt nachstehend an Hand der Zeichnungen. Es zeigen

  • Figur 1 in perspektivischer und schematischer Darstellung ein erstes Beispiel mit zwei Wählerkontaktebenen und einer Vorwählerkontaktebene,
  • Figur 2 einen Längsschnitt durch einen dreiphasigen Stufenwähler entsprechend der Ausführung nach Figur 1,
  • Figur 3 ein zweites Beispiel analog Figur 1, jedoch mit einer Hilfsmalteserscheibe,
  • Figur 4 einen Längsschnitt durch einen dreiphasigen Stufenwähler entsprechend der Ausführung nach Figur 3.
The further explanation of the invention follows below with reference to the drawings. Show it
  • 1 shows a perspective and schematic representation of a first example with two selector contact levels and one preselector contact level,
  • FIG. 2 shows a longitudinal section through a three-phase step selector corresponding to the embodiment according to FIG. 1,
  • FIG. 3 shows a second example analogous to FIG. 1, but with an auxiliary Geneva disk,
  • 4 shows a longitudinal section through a three-phase step selector corresponding to the embodiment according to FIG. 3.

Wie aus Figur 1 und 2 ersichtlich, sind bei dem Stufenwähler in zylindrischer Bauart die feststehenden Stufenkontakte einer Phase in zwei Ebenen I, II angeordnet, wobei in der Ebene I die Kontakte 1, 3, 5,...,13 liegen, während die Ebene II die Kontakte 2, 4,..., K besitzt. Im Zentrum der zylindrischen Anordnung befindet sich ein Schaltrohr 21, welches in jeder Ebene bewegliche Kontakte 22, 23 führt. Diese beweglichen Kontakte 22, 23 stellen Verbindungen zwischen den feststehenden Stufenkontakten 1,...,2,... und zugehörigen Kontaktringen 24, 25 her, wobei die Kontaktringe 24, 25 mit elektrischen Leitungen 26, 27 verbunden sind, die zu einem zugehörigen, aber nicht dargestellten Lastumschalter führen. Am oberen Ende des Schaltrohres 21 sitzt eine Antriebsscheibe 28 zum schrittweisen Betätigen des Schaltrohres 21. Diese Antriebsscheibe 28 ist als Malteserscheibe ausgebildet und wird mittels einer zweiarmigen Kurbel 29 betätigt, wobei ein Drehen der Kurbel 29 um 180° jeweils einen Schaltschritt verursacht. Die beweglichen Kontakte 22, 23 werden hierbei einstufig, also gleichzeitig betätigt. In der in Figur 1 gezeigten Stellung gelangt also bei Ausführung des nächsten Schaltschrittes (Pfeilrichtung) der Kontakt 23 von 1 nach 13 und der Kontakt 22 bleibt infolge Überlappung in Kontaktgabe mit dem Kontakt K. Unterhalb der einzelnen Ebenen I, II des Stufenwählers befinden sich in einer weiteren Ebene III die Kontakte (+), (-) eines Vorwählers, wobei bewegliche Kontakte 30 dieses Vorwählers entweder eine Verbindung des jeweiligen Mittelkontaktes K mit dem (+) Kontakt oder aber (-) Kontakt herstellen. Die beweglichen Kontakte 30 des Vorwählers sitzen am Ende einer konzentrisch im Schaltrohr 21 angeordneten Schaltwelle 31. Diese Schaltwelle 31 des Vorwählers ist in Abhängigkeit vom Schaltschritt des Stufenwählers betätigbar. Sie ist mit einer Kurbel 32, in deren Aussparung der Nocken 33 eines zweiarmigen Hebels 34 eingreifen kann, versehen. Dieser zweiarmige Hebel 34 wird mittels eines fest auf der Antriebsscheibe 28 sitzenden Nockens 35 betätigt, wobei der Bewegungsablauf so eingestellt ist, daß die Betätigung der Vorwählerkontakte 30 erfolgt, sobald der Stufenwähler einen Umlauf vollendet hat. In der in Figur 1 gezeigten Stellung wechselt hierbei der bewegliche Kontakt 23 von 1 nach 13, während der bewegliche Kontakt 22 infolge seiner Überlappung in Kontaktgabe mit dem Kontakt K bleibt. Gleichzeitig mit diesem Bewegungsablauf im Stufenwähler wechseln die beweglichen Vorwählerkontakte 30 von (-) nach (+). Wie aus den Figuren ersichtlich, sind bei dieser Ausführung sämtliche Getriebeteile, sowohl des Stufenwählers wie auch des Vorwählers zu einem Getriebeblock im oberen Bereich des Stufenwählers zusammengefaßt. Die Abstimmung der Schaltschritte von Stufenwähler und Vorwähler aufeinander erfolgt somit allein im Getriebeblock.As can be seen from Figures 1 and 2, in the step selector in a cylindrical design, the fixed step contacts of a phase are arranged in two planes I, II, with contacts 1, 3, 5, ..., 13 lying in plane I while the Level II has contacts 2, 4, ..., K. In the center of the cylindrical arrangement there is a switching tube 21 which leads movable contacts 22, 23 in each plane. These movable contacts 22, 23 establish connections between the fixed step contacts 1, ..., 2, ... and associated contact rings 24, 25, the contact rings 24, 25 being connected to electrical lines 26, 27 which form an associated one , but not shown diverter switch. At the upper end of the switching tube 21 there is a drive pulley 28 for actuating the switching tube 21 step by step. This drive pulley 28 is designed as a Geneva plate and is actuated by means of a two-armed crank 29, a rotation of the crank 29 causing a switching step in each case. The movable contacts 22, 23 are actuated here in one stage, that is to say simultaneously. In the position shown in FIG. 1, when the next switching step (direction of the arrow) is carried out, the contact 23 moves from 1 to 13 and the contact 22 remains in contact with the contact K due to the overlap. Below the individual levels I, II of the step selector are in a further level III, the contacts (+), (-) of a preselector, movable contacts 30 of this preselector either establishing a connection of the respective center contact K with the (+) contact or (-) contact. The movable contacts 30 of the preselector sit at the end of a switching shaft 31 arranged concentrically in the switching tube 21. This switching shaft 31 of the preselector can be actuated as a function of the switching step of the step selector. It is provided with a crank 32, in the recess of which the cam 33 of a two-armed lever 34 can engage. This two-armed lever 34 is actuated by means of a cam 35 firmly seated on the drive disk 28, the movement sequence being set such that the actuation of the preselector contacts 30 takes place as soon as the step selector has completed one revolution. In the position shown in FIG. 1, the movable contact 23 changes from 1 to 13, while the movable contact 22 contacts due to its overlap with the contact K remains. Simultaneously with this sequence of movements in the step selector, the movable preselector contacts 30 change from (-) to (+). As can be seen from the figures, in this embodiment all the gear parts, both the step selector and the preselector, are combined to form a gear block in the upper area of the step selector. The switching steps of step selector and preselector are coordinated with each other in the gearbox alone.

Das zweite Ausführungsbeispiel gemäß Figur 3 und 4 entspricht im prinzipiellen Aufbau dem zuvor beschriebenen Beispiel, weshalb hier dieselben Bezugsziffern wie im ersten Beispiel eingetragen sind. Der Unterschied liegt lediglich in der Gestaltung des Getriebes. Wie ersichtlich, ist seitlich zur Antriebsscheibe 28 eine Hilfsmalteserscheibe 36 angeordnet. Sie ist mit genau der Hälfte der Maltesereinschnitte 37 wie die Antriebsscheibe 28 ausgestattet. Die Antriebskurbel 291 betätigt sowohl die Antriebsscheibe 28 wie auch die Hilfsmalteserscheibe 36. Für letztere ist ein eigener Nocken 38 an der Antriebskurbel 291 vorgesehen. Wie ersichtlich, führt eine Drehung der Antriebskurbel 291 um 180° zu einer Betätigung der Antriebsscheibe 28 um einen Schritt. Wird die Antriebskurbel 28 um weitere 180° gedreht, so vollführt die Antriebsscheibe 28 ihren zweiten Schaltschritt und gleichzeitig wird die Hilfsmalteserscheibe 36 ebenfalls um einen Schritt betätigt, wobei der Nocken 38 in einen Maltesereinschnitt 37 einläuft. Die Hilfsmalteserscheibe 36 ist mit einem Nocken 39 ausgerüstet, der bei einem vorher bestimmten Schaltschritt in die Kurbel 32 der Schaltwelle 31 des Vorwählers eingreift. Es ist klar, daß infolge der Ausstattung der Hilfsmalteserscheibe 36 mit nur der halben Zahl von Einschnitten 37 eine Vergrößerung des Schaltwinkels für die Vorwählerbetätigung erfolgt.The basic design of the second exemplary embodiment according to FIGS. 3 and 4 corresponds to the example described above, which is why the same reference numbers as in the first example are entered here. The only difference is the design of the gearbox. As can be seen, an auxiliary Geneva disk 36 is arranged to the side of the drive disk 28. It is equipped with exactly half of the Maltese cuts 37 as the drive pulley 28. The drive crank 291 actuates both the drive disk 28 and the auxiliary Geneva disk 36. A separate cam 38 is provided on the drive crank 291 for the latter. As can be seen, a rotation of the drive crank 291 by 180 ° leads to an actuation of the drive pulley 28 by one step. If the drive crank 28 is rotated by a further 180 °, the drive disk 28 performs its second switching step and at the same time the auxiliary Geneva disk 36 is also actuated by one step, the cam 38 running into a Maltese cut 37. The auxiliary Geneva disk 36 is equipped with a cam 39 which engages in the crank 32 of the selector shaft 31 of the preselector in a previously determined switching step. It is clear that due to the equipment of the auxiliary Geneva disk 36 with only half the number of cuts 37 there is an increase in the switching angle for the preselection operation.

Claims (2)

1. Einstufig betätigbarer Stufenwähler für Stufentransformatoren, bei dem die feststehenden Stufenkontakte einer Phase in zwei Ebenen am Umfang des Zylinders angeordnet sind und bei dem ein zentrales Schaltrohr vorgesehen ist, das in jeder Ebene einen beweglichen Kontakt führt und das mittels einer an seinem oberen Ende sitzenden Antriebsscheibe, in die eine Antriebskurbel mit zwei um 180° versetzten Nocken wechselseitig eingreift, schrittweise betätigbar ist, wobei bei einem Schaltschritt pro Phase die beiden an benachbarten feststehenden Kontakten anliegenden beweglichen Kontakte gleichzeitig betätigt werden, von denen der eine zum nächsten feststehenden Kontakt gelangt, während der andere infolge Überlappung in Kontaktgabe mit seinem feststehenden Kontakt bleibt, und mit einem nach vollen Umlauf des Stufenwählers betätigbaren Vorwähler, der fluchtend unterhalb des Stufenwählers angeordnet ist, wobei dessen Kontakte in einer weiteren Ebene des zylindrischen Stufenwählers liegen, und dessen bewegliche Kontakte in Abhängigkeit vom Antrieb der Kontakte des Stufenwählers betätigbar sind,
dadurch gekennzeichnet,
daß die beweglichen Vorwählerkontakte (30) am Ende einer konzentrisch im Schaltrohr (21) angeordneten Schaltwelle (31) sitzen und mittels dieser betätigbar sind, wobei die Schaltwelle mittels einer an ihrem oberen Ende sitzenden Kurbel (32) in Abhängigkeit von der Antriebsscheibe (28) des Stufenwählers betätigbar ist.1. Single-stage step selector for step transformers, in which the fixed step contacts of a phase are arranged in two planes on the circumference of the cylinder and in which a central switching tube is provided, which leads a movable contact in each plane, and that by means of a seated at its upper end Drive pulley, in which a drive crank with two cams offset by 180 ° mutually engages, can be actuated step by step, the two movable contacts abutting adjacent stationary contacts being actuated simultaneously in one switching step per phase, one of which passes to the next stationary contact while the other remains in contact with its fixed contact due to overlap, and with a preselectable actuator after full rotation of the tap selector, which is arranged in alignment below the tap selector, the contacts of which in a further plane of the cylindrical tap selector rs lie, and the movable contacts of which can be actuated depending on the drive of the contacts of the step selector,
characterized,
that the movable preselector contacts (30) sit at the end of a shift shaft (31) arranged concentrically in the shift tube (21) and can be actuated by means of the latter, the shift shaft being dependent on the drive disk (28) by means of a crank (32) located at its upper end the step selector can be actuated. 2. Einstufig betätigbarer zylindrischer Stufenwähler nach Anspruch 1,
dadurch gekennzeichnet,
daß seitlich versetzt zur Antriebsscheibe (28) eine Hilfsmalteserscheibe (36) mit gegenüber der Antriebsscheibe halber Schrittzahl vorgesehen ist, die mittels eines weiteren an der Antriebskurbel (291) sitzenden Nockens (38) bei voller Umdrehung der Antriebskurbel um je einen Schritt betätigbar ist und die ihrerseits bei Ausführung des letzten Schaltschrittes eines Umlaufes des Stufenwählers mit der Kurbel (32) der Schaltwelle (31) des Vorwählers kuppelbar ist und im übrigen Leerlaufschritte durchführt.2. Single-stage cylindrical step selector according to claim 1,
characterized,
that laterally offset to the drive disk (28), an auxiliary Geneva disk (36) is provided with half the number of steps relative to the drive disk, which can be actuated by one step at a time with a full rotation of the drive crank by means of a further cam (38) seated on the drive crank (291) and which in turn can be coupled to the crank (32) of the selector shaft (31) of the preselector when the last switching step of a revolution of the step selector is carried out and carries out idle steps in the remaining.
EP89121510A 1988-12-01 1989-11-21 Cylindrical tap selector for step-down transformers actuated in one step Expired - Lifetime EP0371375B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89121510T ATE103734T1 (en) 1988-12-01 1989-11-21 ONE-STAGE ACTUABLE CYLINDRICAL TAP SELECTOR FOR TAP TRANSFORMERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3840528A DE3840528A1 (en) 1988-12-01 1988-12-01 ONE-STEP OPERATIONAL CYLINDRICAL STEP SELECTOR FOR STEP TRANSFORMERS
DE3840528 1988-12-01

Publications (3)

Publication Number Publication Date
EP0371375A2 true EP0371375A2 (en) 1990-06-06
EP0371375A3 EP0371375A3 (en) 1991-08-14
EP0371375B1 EP0371375B1 (en) 1994-03-30

Family

ID=6368260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121510A Expired - Lifetime EP0371375B1 (en) 1988-12-01 1989-11-21 Cylindrical tap selector for step-down transformers actuated in one step

Country Status (6)

Country Link
EP (1) EP0371375B1 (en)
JP (1) JPH02189908A (en)
KR (1) KR900010818A (en)
AT (1) ATE103734T1 (en)
DE (2) DE3840528A1 (en)
HU (1) HU206422B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014106997A1 (en) * 2014-05-19 2015-11-19 Maschinenfabrik Reinhausen Gmbh Switching arrangement for a tapped transformer and method for operating such a switching arrangement

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19836463C1 (en) * 1998-08-12 1999-10-21 Reinhausen Maschf Scheubeck Electric stepping switch for stepping transformer
BG64809B1 (en) * 2002-01-24 2006-04-28 Тони ГРОЗДАНОВ Preselector for step voltage regulator
DE102010015052A1 (en) * 2010-04-15 2011-10-20 Maschinenfabrik Reinhausen Gmbh Stepping gear for on-load tap-changer of step transformers
KR101952411B1 (en) 2016-12-27 2019-02-26 재단법인 아산사회복지재단 Medical thermoforming apparatus

Citations (4)

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Publication number Priority date Publication date Assignee Title
DE856019C (en) * 1950-11-23 1952-11-17 Siemens Ag Reversing switch drive with roller or sliding body lock
CH294482A (en) * 1944-04-04 1953-11-15 Siemens Ag Step selector, especially for transformers.
US3764891A (en) * 1972-07-06 1973-10-09 Westinghouse Electric Corp Tap changing apparatus with prevention of floating tapped winding
FR2453481A1 (en) * 1979-04-03 1980-10-31 Reinhausen Kg Maschf LOADED THREE-PHASE SELECTOR FOR STEP-BY-STEP TRANSFORMERS

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
DE2106858B1 (en) * 1971-02-13 1972-08-03 Maschinenfabrik Reinhausen Gebr Scheubeck Kg Step switch for regulating transformers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH294482A (en) * 1944-04-04 1953-11-15 Siemens Ag Step selector, especially for transformers.
DE856019C (en) * 1950-11-23 1952-11-17 Siemens Ag Reversing switch drive with roller or sliding body lock
US3764891A (en) * 1972-07-06 1973-10-09 Westinghouse Electric Corp Tap changing apparatus with prevention of floating tapped winding
FR2453481A1 (en) * 1979-04-03 1980-10-31 Reinhausen Kg Maschf LOADED THREE-PHASE SELECTOR FOR STEP-BY-STEP TRANSFORMERS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014106997A1 (en) * 2014-05-19 2015-11-19 Maschinenfabrik Reinhausen Gmbh Switching arrangement for a tapped transformer and method for operating such a switching arrangement

Also Published As

Publication number Publication date
ATE103734T1 (en) 1994-04-15
DE3840528C2 (en) 1991-01-17
HU206422B (en) 1992-10-28
DE3840528A1 (en) 1990-06-07
EP0371375B1 (en) 1994-03-30
KR900010818A (en) 1990-07-09
JPH02189908A (en) 1990-07-25
EP0371375A3 (en) 1991-08-14
HU896219D0 (en) 1990-02-28
DE58907345D1 (en) 1994-05-05
HUT52271A (en) 1990-06-28

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