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EP0680062A2 - Tap changer - Google Patents

Tap changer Download PDF

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Publication number
EP0680062A2
EP0680062A2 EP95102084A EP95102084A EP0680062A2 EP 0680062 A2 EP0680062 A2 EP 0680062A2 EP 95102084 A EP95102084 A EP 95102084A EP 95102084 A EP95102084 A EP 95102084A EP 0680062 A2 EP0680062 A2 EP 0680062A2
Authority
EP
European Patent Office
Prior art keywords
clamping ring
selector
shaft
contact
contact carrier
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
EP95102084A
Other languages
German (de)
French (fr)
Other versions
EP0680062B1 (en
EP0680062A3 (en
Inventor
Werner Dipl.-Ing. Friedrich (Fh)
Rolf Strempel
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
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
Priority claimed from DE4414951A external-priority patent/DE4414951C1/en
Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP0680062A2 publication Critical patent/EP0680062A2/en
Publication of EP0680062A3 publication Critical patent/EP0680062A3/en
Application granted granted Critical
Publication of EP0680062B1 publication Critical patent/EP0680062B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H9/0016—Contact arrangements for tap changers

Definitions

  • the invention relates to a load selector for step transformers according to the preamble of the first claim.
  • load selector are known from DE-OS 32 26 854.
  • load selectors With load selectors, an uninterrupted load changeover is carried out under voltage between adjacent taps of a control winding of a step transformer.
  • the load selector simultaneously fulfills the function of a tap selector, which selects the new winding tap to be connected, and a load switch, which, with brief interposition of one or more switching resistors, switches the current from the original to the new tap without interruption.
  • load selector essentially consist of an oil vessel formed by an insulating material cylinder, the upper end of which is closed at the load selector head and the lower end of which is sealed by the oil vessel bottom, and the tap changer insert located therein.
  • the fixed contacts of the load selector are arranged in separate planes and led out to the outside with connection contacts.
  • the tap changer insert contains the entire movable contact system and consists of the centrally positioned control shaft, the load selector switch elements and, if applicable, the preselector contact carrier.
  • the entire, movable contact system consists of individual contact carriers arranged one above the other, each of which is attached to the control shaft in the same horizontal planes as the associated fixed contacts.
  • the contact carriers in turn each have a switch contact and one or more auxiliary switch contacts arranged laterally therefrom.
  • control shaft which is usually designed as hard paper or glass fiber reinforced cast resin tube, by means of these penetrating screws.
  • the object of the invention is therefore to provide a load selector with a simple and uncomplicated attachment of the contact systems to the selector shaft, which should not require any bores in the selector shaft and, moreover, can only be carried out from the outside and can also be detached again, ie without tools, Brackets or the like to have to intervene in the interior of the selector shaft.
  • the figure shows a load selector according to the invention in a schematic horizontal sectional view.
  • the load selector has, as is generally the case, within an oil vessel formed by an insulating material cylinder 1 and bottom and head parts, not shown, a vertically penetrating switching shaft 4, which has one or more horizontally attached contact carriers 5.
  • the control shaft 4 can be rotated by means of known drive means, also not shown, such that fixed contacts 2 of each of the contact carriers 5, each arranged in the same horizontal plane on the inside of the insulating material cylinder 1, lead to the winding leads of the connected step transformer via outward leads 3 are connected, can be connected.
  • Each contact carrier 5 has a switching contact 6 designed as a roller contact and two auxiliary switching contacts 7, 8, likewise roller contacts, arranged on both sides thereof. The electrical connection to the individual contacts and the load transfer are not shown in detail.
  • each contact carrier 5 is fastened to the selector shaft 4 by a two-part clamping ring 9.
  • the clamping ring 9 is clamped on the selector shaft 4 by fastening means 10, 11, screws, for example. It is also possible, instead of fastening means 10, 11 on both sides, as shown in the figure, to use only a single screw or the like. to use for bracing and to provide a snap connection, a hinge or the like on the opposite side. It is also possible both to fasten the contact carrier 5 separately on a part of the clamping ring 9 and to form the contact carrier 5 itself - as shown in the figure - as an integral part of a part of the clamping ring 9.
  • At least one centering aid is provided on the outer surface of the selector shaft 4, which corresponds to the clamping ring 9 and ensures a clear position assignment of the contact carrier 5 and at the same time an additional protection against rotation.
  • a blind bore 13 is provided in the control shaft 4, in which a centering pin 12 is fastened, which in turn engages in a recess 16 in the inner surface of the clamping ring 9 facing the control shaft 4.
  • the clamping ring 9 is advantageously designed such that its inner surface facing the selector shaft 4 essentially adapts in its curvature to the outer contour of the selector shaft.
  • the clamping ring 9 has on its outer circumference one or more flanges 14, on which or on which - for example by means of threaded holes 15 provided - further components on the clamping ring 9 and thus, the rotational movement of which, on the selector shaft 4 are arranged.
  • This can include, for example, switching resistors, shielding rings, etc. his.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Discharge Heating (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Clamps And Clips (AREA)

Abstract

The load selector for a tapped transformer has a cylindrical oil vessel. Stationary step contacts (2) are arranged on the inside of the cylinder (11). A switch rod (4) arranged inside the cylinder (1) is rotated by a driver. One or several contact carriers (5) are fastened to the rod (4). These each have a switch contact (4) to switch the fixed step contacts. Each contact carrier (5) is fastened to the switch rod (4) by a two-part clamp ring (9) such that the contact carrier (5) is fixedly connected to part of the clamp ring (9) and both parts of the clamp ring (9) surround the switch rod (4). The two parts of the clamp ring (9) are tightened together by fasteners (11,12) outside the switch rod (4). <IMAGE>

Description

Die Erfindung betrifft einen Lastwähler für Stufentransformatoren gemäß dem Oberbegriff des ersten Patentanspruches.
Solche Lastwähler sind aus der DE-OS 32 26 854 bekannt.The invention relates to a load selector for step transformers according to the preamble of the first claim.
Such load selector are known from DE-OS 32 26 854.

Bei Lastwählern wird eine unterbrechungslose Lastumschaltung unter Spannung zwischen benachbarten Anzapfungen einer Regelwicklung eines Stufentransformators durchgeführt.
Der Lastwähler erfüllt dabei gleichzeitig die Funktion eines Stufenwählers, der die jeweils neu zu beschaltende Wicklungsanzapfung auswählt, und eines Lastumschalters, der unter kurzzeitiger Zwischenschaltung eines oder mehrerer Überschaltwiderstände die unterbrechungslose Umschaltung des Stromes von der ursprünglichen auf die neue Anzapfung vornimmt.
Solche Lastwähler bestehen im wesentlichen aus einem von einem Isolierstoffzylinder gebildeten Ölgefäß, dessen oberes Ende am Lastwählerkopf und dessen unteres Ende durch den Ölgefäßboden abgeschlossen ist, und dem darin befindlichen Stufenschaltereinsatz.
An der Innenwandung des Ölgefäßes sind in voneinander getrennten Ebenen die feststehenden Kontakte des Lastwählers angeordnet und nach außen mit Anschlußkontakten herausgeführt. Der Stufenschaltereinsatz enthält das gesamte bewegliche Kontaktsystem und besteht aus der zentrisch gelagerten Schaltwelle, den Lastwähler-Schaltelementen und ggf. dem Vorwähler-Kontaktträger.
Das gesamte, bewegliche Kontaktsystem besteht dabei aus übereinander angeordneten einzelnen Kontaktträgern, die jeweils in gleichen horizontalen Ebenen wie die zugehörigen feststehenden Kontakte an der Schaltwelle befestigt sind. Die Kontaktträger ihrerseits weisen jeweils einen Schaltkontakt und einen oder mehrere seitlich von diesem angeordnete Hilfsschaltkontakte auf.With load selectors, an uninterrupted load changeover is carried out under voltage between adjacent taps of a control winding of a step transformer.
The load selector simultaneously fulfills the function of a tap selector, which selects the new winding tap to be connected, and a load switch, which, with brief interposition of one or more switching resistors, switches the current from the original to the new tap without interruption.
Such load selector essentially consist of an oil vessel formed by an insulating material cylinder, the upper end of which is closed at the load selector head and the lower end of which is sealed by the oil vessel bottom, and the tap changer insert located therein.
On the inner wall of the oil tank, the fixed contacts of the load selector are arranged in separate planes and led out to the outside with connection contacts. The tap changer insert contains the entire movable contact system and consists of the centrally positioned control shaft, the load selector switch elements and, if applicable, the preselector contact carrier.
The entire, movable contact system consists of individual contact carriers arranged one above the other, each of which is attached to the control shaft in the same horizontal planes as the associated fixed contacts. The contact carriers in turn each have a switch contact and one or more auxiliary switch contacts arranged laterally therefrom.

Bisher werden die Kontaktträger direkt mit der Schaltwelle, die üblicherweise als Hartpapier- oder als glasfaserverstärktes Gießharzrohr ausgebildet ist, mittels diese durchdringender Schrauben verschraubt.So far, the contact carriers have been screwed directly to the control shaft, which is usually designed as hard paper or glass fiber reinforced cast resin tube, by means of these penetrating screws.

Dies geschieht, wie aus der Firmenschrift "Stufenschalter Typ V" der Maschinenfabrik Reinhausen GmbH (Druckimpressum VK 02/81de-1081/2500) bekannt, durch an die Kontaktträger angeformte Befestigungsflansche, deren Kontur an die äußere Krümmung der Schaltwelle angepaßt ist.
Eine ähnliche Befestigung der Kontaktträger ist auch aus der Firmenschrift "TU-Stufenschalter für Transformatoren Basis-Typenreihe L" der Trafo-Union (Druckimpressum 41.6.61/3.85) bekannt. Auch hierbei werden die Kontaktträger mit der Schaltwelle verschraubt, wobei sie zusätzlich noch teilweise in Aussparungen der Schaltwelle eingreifen.This is done, as is known from the company letter "tap changer type V" from Maschinenfabrik Reinhausen GmbH (printing imprint VK 02 / 81de-1081/2500), by means of mounting flanges molded onto the contact carrier, the contour of which is adapted to the outer curvature of the control shaft.
A similar attachment of the contact carrier is also from the company publication "TU tap changer for transformers basic type series L" of the Transformer Union (pressure imprint 41.6.61 / 3.85). Here, too, the contact carriers are screwed to the selector shaft, and they also partially engage in cutouts in the selector shaft.

Nachteilig bei diesen bekannten Befestigungen ist dabei einerseits, daß die Schaltwelle mit Bohrungen versehen werden muß, was mechanisch aufwendig und auch aus elektrischen und Festigkeitsgründen unerwünscht ist, zum anderen ist die Befestigung mit die Schaltwelle durchdringenden Schrauben umständlich, da die Befestigungsmittel auch im Inneren der Schaltwelle zugänglich sein müssen.A disadvantage of these known fastenings is on the one hand that the selector shaft must be provided with holes, which is mechanically complex and also undesirable for electrical and strength reasons, on the other hand, the fastening with screws penetrating the selector shaft is cumbersome, since the fastening means also inside the selector shaft must be accessible.

Aufgabe der Erfindung ist es demnach, einen Lastwähler mit einer einfachen und unkomplizierten Befestigung der Kontaktsysteme an der Schaltwelle anzugeben, die keine Bohrungen in der Schaltwelle erforderlich machen soll und darüberhinaus ausschließlich von außen erfolgen und auch wieder gelöst werden kann, d.h., ohne mit Werkzeugen, Gegenhaltern o. dgl. in das Innere der Schaltwelle eingreifen zu müssen.The object of the invention is therefore to provide a load selector with a simple and uncomplicated attachment of the contact systems to the selector shaft, which should not require any bores in the selector shaft and, moreover, can only be carried out from the outside and can also be detached again, ie without tools, Brackets or the like to have to intervene in the interior of the selector shaft.

Dies wird erfindungsgemäß durch einen Lastwähler mit den Merkmalen des ersten Patentanspruches gelöst.
Die Unteransprüche betreffen besonders vorteilhafte Weiterbildungen der Erfindung.This is solved according to the invention by a load selector with the features of the first claim.
The subclaims relate to particularly advantageous developments of the invention.

Die Erfindung soll nachfolgend an Hand einer Zeichnung beispielhaft noch näher erläutert werden.The invention will be explained in more detail below using a drawing as an example.

Die Figur zeigt einen erfindungsgemäßen Lastwähler in schematischer horizontaler Schnittdarstellung.The figure shows a load selector according to the invention in a schematic horizontal sectional view.

Der Lastwähler weist, wie allgemein üblich, innerhalb eines von einem Isolierstoffzylinder 1 und nicht dargestellten Boden- und Kopfteilen gebildeten Ölgefäßes eine dieses senkrecht durchdringende Schaltwelle 4 auf, die einen oder mehrere horizontal untereinander befestigte Kontaktträger 5 besitzt.
Die Schaltwelle 4 ist mittels ebenfalls nicht dargestellter bekannter Antriebsmittel drehbar, derart, daß von jedem der Kontaktträger 5 jeweils in der gleichen horizontalen Ebene an der Innenseite des Isolierstoffzylinders 1 angeordnete feste Kontakte 2, die über nach außen geführte Ableitungen 3 mit den Wicklungsausleitungen des angeschlossenen Stufentransformators in Verbindung stehen, beschaltbar sind.
Jeder Kontaktträger 5 weist einen als Rollenkontakt ausgebildeten Schaltkontakt 6 und zwei beidseitig davon angeordnete Hilfsschaltkontakte 7, 8, ebenfalls Rollenkontakte, auf.
Die elektrische Verbindung zu den einzelnen Kontakten und die Lastableitung sind nicht näher dargestellt.The load selector has, as is generally the case, within an oil vessel formed by an insulating material cylinder 1 and bottom and head parts, not shown, a vertically penetrating switching shaft 4, which has one or more horizontally attached contact carriers 5.
The control shaft 4 can be rotated by means of known drive means, also not shown, such that fixed contacts 2 of each of the contact carriers 5, each arranged in the same horizontal plane on the inside of the insulating material cylinder 1, lead to the winding leads of the connected step transformer via outward leads 3 are connected, can be connected.
Each contact carrier 5 has a switching contact 6 designed as a roller contact and two auxiliary switching contacts 7, 8, likewise roller contacts, arranged on both sides thereof.
The electrical connection to the individual contacts and the load transfer are not shown in detail.

Erfindungsgemäß wird jeder Kontaktträger 5 durch einen zweiteiligen Klemmring 9 an der Schaltwelle 4 befestigt. Der Klemmring 9 wird durch Befestigungsmittel 10, 11, Schrauben etwa, auf der Schaltwelle 4 verspannt. Es ist auch möglich, statt beidseitiger Befestigungsmittel 10, 11, wie in der Figur dargestellt, nur eine einzige Schraube o.ä. zur Verspannung zu verwenden und auf der gegenüberliegenden Seite eine Rastverbindung, ein Scharnier o. dgl. vorzusehen.
Es ist weiterhin sowohl möglich, den Kontaktträger 5 separat auf einem Teil des Klemmringes 9 zu befestigen als auch den Kontaktträger 5 selbst - wie in der Figur dargestellt - als integralen Bestandteil eines Teiles des Klemmringes 9 auszubilden.
In beiden Fällen sind keinerlei Bohrungen in der Schaltwelle 4 erforderlich, durch die in deren Inneres ragende Befestigungsmittel eingeführt werden müßten. Vielmehr erfolgt die Befestigung des gesamten Kontaktträgers 5 ausschließlich durch außerhalb der Schaltwelle 4 - vorzugsweise horizontal - sich erstreckende und damit frei zugängliche Befestigungsmittel 10, 11.According to the invention, each contact carrier 5 is fastened to the selector shaft 4 by a two-part clamping ring 9. The clamping ring 9 is clamped on the selector shaft 4 by fastening means 10, 11, screws, for example. It is also possible, instead of fastening means 10, 11 on both sides, as shown in the figure, to use only a single screw or the like. to use for bracing and to provide a snap connection, a hinge or the like on the opposite side.
It is also possible both to fasten the contact carrier 5 separately on a part of the clamping ring 9 and to form the contact carrier 5 itself - as shown in the figure - as an integral part of a part of the clamping ring 9.
In both cases, no holes are required in the control shaft 4 through which protruding fasteners would have to be inserted into the interior. Rather, the entire contact carrier 5 is fastened exclusively by fastening means 10, 11 which extend outside the selector shaft 4 - preferably horizontally - and are thus freely accessible.

Nach einer besonders vorteilhaften Weiterbildung der Erfindung ist an der Außerfläche der Schaltwelle 4 mindestens eine Zentrierhilfe vorgesehen, die mit dem Klemmring 9 korrespondiert und eine eindeutige Lagezuordnung des Kontaktträgers 5 und zugleich eine zusätzliche Verdrehsicherung gewährleistet. In der Figur ist dar eine Sackbohrung 13 in der Schaltwelle 4 vorgesehen, in der ein Zentrierstift 12 befestigt ist, der wiederum in eine Aussparung 16 in der der Schaltwelle 4 zugewandten Innenfläche des Klemmringes 9 eingreift.
Der Klemmring 9 ist vorteilhafterweise so ausgebildet, daß sich seine der Schaltwelle 4 zugewandte Innenfläche im wesentlichen in ihrer Krümmung an die Außenkontur der Schaltwelle anpaßt.
Gemäß einer weiteren vorteilhaften Weiterbildung der Erfindung weist der Klemmring 9 an seinem äußeren Umfang einen oder mehrere Flansche 14 auf, an dem bzw. an denen - beispielsweise mittels vorgesehener Gewindebohrungen 15 - weitere Bauteile am Klemmring 9 und damit, deren Drehbewegung mitvollziehend, an der Schaltwelle 4 angeordnet sind. Dies können z.B. Überschaltwiderstände, Abschirmringe o.ä. sein.According to a particularly advantageous development of the invention, at least one centering aid is provided on the outer surface of the selector shaft 4, which corresponds to the clamping ring 9 and ensures a clear position assignment of the contact carrier 5 and at the same time an additional protection against rotation. In the figure, a blind bore 13 is provided in the control shaft 4, in which a centering pin 12 is fastened, which in turn engages in a recess 16 in the inner surface of the clamping ring 9 facing the control shaft 4.
The clamping ring 9 is advantageously designed such that its inner surface facing the selector shaft 4 essentially adapts in its curvature to the outer contour of the selector shaft.
According to a further advantageous development of the invention, the clamping ring 9 has on its outer circumference one or more flanges 14, on which or on which - for example by means of threaded holes 15 provided - further components on the clamping ring 9 and thus, the rotational movement of which, on the selector shaft 4 are arranged. This can include, for example, switching resistors, shielding rings, etc. his.

Claims (5)

Lastwähler für Stufentransformatoren, bestehend aus einem zylindrischen Ölgefäß, an dessen Innenseite feste Stufenkontakte angeordnet sind, sowie einer im Inneren angeordneten Schaltwelle, die durch Antriebsmittel drehbar ist und an der ein Kontaktträger oder übereinander in mehreren Phasen mehrere Kontaktträger befestigt sind, der bzw. die wiederum jeweils mindestens einen Schaltkontakt aufweisen, mittels der die festen Stufenkontakte beschaltbar sind,
dadurch gekennzeichnet,
daß jeder Kontaktträger (5) durch einen zweiteiligen Klemmring (9) an der Schaltwelle (4) befestigt ist, derart, daß der Kontaktträger (5) fest mit einem Teil des zweiteiligen Klemmringes (9) verbunden ist und beide Teile des Klemmringes (9) die Schaltwelle (4) umfassen und durch außerhalb der Schaltwelle (4) verlaufende Befestigungsmittel (11, 12) kraftschlüssig miteinander verspannt sind.Load selector for step transformers, consisting of a cylindrical oil vessel, on the inside of which fixed step contacts are arranged, and an inside switching shaft, which can be rotated by drive means and to which a contact carrier or several contact carriers are fastened in several phases, which in turn each have at least one switching contact, by means of which the fixed step contacts can be connected,
characterized,
that each contact carrier (5) is fastened to the selector shaft (4) by a two-part clamping ring (9), in such a way that the contact carrier (5) is firmly connected to part of the two-part clamping ring (9) and both parts of the clamping ring (9) comprise the selector shaft (4) and are non-positively clamped together by fastening means (11, 12) running outside the selector shaft (4). Lastwähler nach Anspruch 1,
dadurch gekennzeichnet,
daß der Kontaktträger (5) als integraler Bestandteil eines Teiles des zweiteiligen Klemmringes (9) ausgebildet ist.Load selector according to claim 1,
characterized,
that the contact carrier (5) is formed as an integral part of a part of the two-part clamping ring (9). Lastwähler nach Anspruch 1,
dadurch gekennzeichnet,
daß die Innenfläche des zweiteiligen Klemmringes (9) im wesentlichen der Oberfläche der Schaltwelle (4) in ihrer Krümmung angepaßt ist.Load selector according to claim 1,
characterized,
that the inner surface of the two-part clamping ring (9) is essentially adapted to the surface of the selector shaft (4) in its curvature. Lastwähler nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß an der Außenfläche der Schaltwelle (4) mindestens eine Zentrierhilfe (12) vorgesehen ist, die mit einer Kontur an der Innenfläche des zweiteiligen Klemmringes (9) korrespondiert, derart, daß eine eindeutige Lagezuordnung und Verdrehsicherung gewährleistet ist.Load selector according to one of claims 1 to 3,
characterized,
that at least one centering aid (12) is provided on the outer surface of the selector shaft (4), which corresponds to a contour on the inner surface of the two-part clamping ring (9), in such a way that an unambiguous position assignment and protection against rotation is ensured. Lastwähler nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß der zweiteilige Klemmring (9) an seinem äußeren Umfang einen oder mehrere Flansche (14) zur Befestigung weiterer, die Drehung der Schaltwelle (4) mitvollziehender Bauteile aufweist.Load selector according to one of claims 1 to 4,
characterized,
that the two-part clamping ring (9) has on its outer circumference one or more flanges (14) for fastening further components which carry out the rotation of the selector shaft (4).
EP95102084A 1994-04-28 1995-02-15 Tap changer Expired - Lifetime EP0680062B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4414951A DE4414951C1 (en) 1994-03-30 1994-04-28 Load selector or step selector for step transformers
DE4414951 1994-04-28

Publications (3)

Publication Number Publication Date
EP0680062A2 true EP0680062A2 (en) 1995-11-02
EP0680062A3 EP0680062A3 (en) 1997-03-26
EP0680062B1 EP0680062B1 (en) 2000-06-14

Family

ID=6516741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95102084A Expired - Lifetime EP0680062B1 (en) 1994-04-28 1995-02-15 Tap changer

Country Status (4)

Country Link
EP (1) EP0680062B1 (en)
JP (1) JPH0855741A (en)
AT (1) ATE193958T1 (en)
ES (1) ES2146673T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012097959A1 (en) * 2011-01-20 2012-07-26 Maschinenfabrik Reinhausen Gmbh Tap changer
CN113035603A (en) * 2021-02-08 2021-06-25 南方电网科学研究院有限责任公司 Special-shaped contact device of passive-triggered power electronic tap switch
CN113066685A (en) * 2021-02-08 2021-07-02 广东电网有限责任公司广州供电局 Passive triggering contact device of power electronic tap switch

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB296681A (en) * 1927-03-01 1928-09-03 Edouard Fries Improvements in and relating to tapping switches or ratio-adjusting devices for electrical transformers
GB356714A (en) * 1930-06-06 1931-09-07 British Electric Transformer C Improvements in or relating to voltage regulators for electrical transformers
FR983462A (en) * 1946-10-23 1951-06-25 Smit & Willem & Co Nv Step switch for voltage or current adjustment
FR2530371A1 (en) * 1982-07-17 1984-01-20 Reinhausen Kg Maschf Load selector for stepped current transformer
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
DE9405427U1 (en) * 1994-03-30 1995-04-27 Maschinenfabrik Reinhausen Gmbh, 93059 Regensburg Load selector with switching resistors

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB296681A (en) * 1927-03-01 1928-09-03 Edouard Fries Improvements in and relating to tapping switches or ratio-adjusting devices for electrical transformers
GB356714A (en) * 1930-06-06 1931-09-07 British Electric Transformer C Improvements in or relating to voltage regulators for electrical transformers
FR983462A (en) * 1946-10-23 1951-06-25 Smit & Willem & Co Nv Step switch for voltage or current adjustment
FR2530371A1 (en) * 1982-07-17 1984-01-20 Reinhausen Kg Maschf Load selector for stepped current transformer
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
DE9405427U1 (en) * 1994-03-30 1995-04-27 Maschinenfabrik Reinhausen Gmbh, 93059 Regensburg Load selector with switching resistors

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012097959A1 (en) * 2011-01-20 2012-07-26 Maschinenfabrik Reinhausen Gmbh Tap changer
CN103314425A (en) * 2011-01-20 2013-09-18 赖茵豪森机械制造公司 Tap changer
CN103314425B (en) * 2011-01-20 2016-04-20 赖茵豪森机械制造公司 Shunting switch
CN113035603A (en) * 2021-02-08 2021-06-25 南方电网科学研究院有限责任公司 Special-shaped contact device of passive-triggered power electronic tap switch
CN113066685A (en) * 2021-02-08 2021-07-02 广东电网有限责任公司广州供电局 Passive triggering contact device of power electronic tap switch
CN113066685B (en) * 2021-02-08 2022-05-20 广东电网有限责任公司广州供电局 Passive triggering contact device of power electronic tap switch
CN113035603B (en) * 2021-02-08 2022-06-14 南方电网科学研究院有限责任公司 Special-shaped contact device of passive triggering power electronic tap switch

Also Published As

Publication number Publication date
EP0680062B1 (en) 2000-06-14
ES2146673T3 (en) 2000-08-16
ATE193958T1 (en) 2000-06-15
JPH0855741A (en) 1996-02-27
EP0680062A3 (en) 1997-03-26

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