Maschinenfabrik Reinhausen Gmbh

Siemens Aktiengesellschaft

Christian Hammer

Andreas Sachsenhauser

Wolfgang Albrecht

Dieter Dohnal

Alfred Bieringer

Andreas Stocker

Werner Hartmann

Roman Renz

Christian Pircher

Andreas Stelzer

Joerg Teichmann

Andreas Lawall

Norbert Wenzel

Silke Wrede

Sylvio Kosse

Thomas Schuster

Christian Kotz

Riccardo Dalla Vecchia

Claus Seisenberger

Uwe Kaltenborn

Klaus Pistor

Gerhard Metz

Sebastian Rehkopf

Martin Pankofer

Rolf Strempel

Konrad Raedlinger

Gregor Wilhelm

Richard Roskosch

Nikolaus Unterreiner

Albert Schmidbauer

Thomas M Huber

Werner Olbrich

Eduard Schmidt

Markus Zintl

Rainer Frotscher

Christian Hurm

Hubert Zwirglmaier

Michael Schmeisser

Dominik Plitzko

Max Weidinger

Jörg Teichmann

Dirk Graupner

Axel Kraemer

Christoph Heynen

Andreas Sachsenhausen

Marco Hoerl

Silvio Kosse

Konrad RÄDLINGER

Marco HÖRL

Thomas Huber

Eduard Schmid

Jürgen Kollmannsberger

An on-load tap-changer uninterruptedly switches between winding taps of a tap-changing transformer. The on-load tap-changer has: a diverter switch that switches over from a first to a second fixed contact; and a selector that powerlessly preselects the fixed contacts and has a first and second selector arm that are actuated independently and contact each of the fixed contacts. The diverter switch has: a main path with a mechanical switching element that connects the first selector arm to a load take-off lead; a first auxiliary path with a first semiconductor switching element that is parallel to the main path and connects the first selector arm to the load take-off lead, and a second auxiliary path with a second semiconductor switching element that connect the second selector arm to the load take-off lead.

On-load tap changer and method for actuating an on-load tap changer

An on-load tap-changer for switching, without interruption, between winding taps of a tap-changing transformer, including a diverter switch for performing a switch-over from a first to a second fixed contact, a selector for preselecting, without power, the first and second fixed contact, and a first controller, wherein the diverter switch has a plurality of semiconductor and mechanical switching elements, the selector has a first and second selector arm, which are actuatable independently of one another and can contact each of the fixed contacts, and the first controller is configured to trigger a switch command and to actuate the first and second selector arm and the plurality of mechanical switching elements by a motor drive, wherein the on-load tap changer includes a second controller to actuate the plurality of semiconductor switching elements, and wherein during the switch-over the first controller actuates the motor drive depending on the second controller.

An on-load tap-changer switches, without interruption, between winding taps of a tapped transformer. The on-load tap-changer includes fixed contacts, which include a first fixed contact, which is configured to connect to a first winding tap of the tapped transformer; and a second fixed contact, which is configured to connect to a second winding tap of the tapped transformer. The on-load tap-changer also includes a first selector arm, which is configured such that it can contact each of the fixed contacts; a second selector arm, which is configured such that it can contact each of the fixed contacts; and a diverter switch configured to perform a switch from the first fixed contact to the second fixed contact of the on-load tap-changer; a connection contact arranged additionally to the fixed contacts; and an auxiliary contact, which configured to selectively contact the connection contact or one of the fixed contacts.

An on-load tap-changer of a tap-changing transformer has a switch. The switch has: a take-off contact; a primary fixed contact; and a contact unit. The contact unit has a moving contact, a first arcing contact and a second arcing contact. These contacts are pivotable about a pivot axis during a switchover process such that the contacts assume a first position, in which they make contact with the take-off contact and the primary fixed contact, and a second position, in which they are separated from the take-off contact and the primary fixed contact. The second arcing contact assumes the first position before the first arcing contact when switching over from the second position to the first position and leaves the first position after the first arcing contact when switching over from the first position to the second position.

Switch for an on-load tap changer and load transfer switch for an on-load tap changer

A resistor assembly can be used in a tap changer. The resistor assembly may include: a resistor element, which is held by at least two resistor holders; a base plate with at least one opening and on which the at least two resistor holders holding the resistor element are arranged; a plurality of guides, respectively formed in each of the resistor holders and being configured to position a first end and a second end of the resistor element with respect to a longitudinal direction between the two resistor holders; and contact points of the resistor element, the contact points being electrically contacted by contacts of the tap changer in a condition where the resistor element is inserted into the resistor holder.

Resistor assembly for tap changer and tap changer

An on-load tap changer has: a first selector rod and a second selector rod; a load changeover-switch rod; a switch; and a transmission. The first selector rod, the second selector rod and the load changeover-switch rod are arranged collinearly. The transmission is configured to: move the first selector rod and the second selector rod during changeover from one selector contact to an adjacent selector contact in a first direction; and move the load changeover-switch rod during the changeover in the first direction and a second direction, which is opposite to the first direction, so as to actuate the switch.

On-load tap changer and local network transformer having an on-load tap changer

An on-load tap changer includes: a fine selector, including: fixed contacts having a commutation contact, connectable with a main winding, and tap contacts, connectable with an associated tap of regulating windings; first and second arms that selectably contact the fixed contacts; a preselector, switchable between first and second settings, connectable with the regulating and main windings, and having: first, second, and third preselector fixed contacts, connectable in the first setting with the first preselector fixed contact and in the second setting with the second preselector fixed contact; and a load changeover switch, switchable between first and second changeover settings, and including: a first terminal connected with the first arm, a second terminal connected with the second arm, and a diverter line connected in the first changeover setting with the first terminal and in the second changeover setting with the second terminal.

On-load tap changer, regulating transformer with on-load tap changer, and method for connecting an on-load tap changer

A switch includes a diverter contact; a primary fixed contact; and a secondary fixed contact. The switch additionally includes a primary movable contact configured to be pivoted, relative to the diverter contact and the primary fixed contact, about a pivot axis between a first end position and a second end position. In the first end position, the primary movable contact bears by a first contact point against the diverter contact and by a second contact point against the primary fixed contact. The switch further includes a secondary movable contact configured to be pivoted, relative to the diverter contact and the secondary fixed contact, about the pivot axis between a first end position and a second end position. In the first end position the secondary movable contact bears by a third contact point against the diverter contact and by a fourth contact point against the secondary fixed contact.

Load transfer switch for an on-load tap changer and continuous main switch and disconnecting switch for same

A selector for an on-load tap changer with a diverter switch includes: an insulating plate with a first side and a second side, the second side opposite the first side; a plurality of fixed contacts, which extend from the first side through the insulating plate to the second side; a first movable contact on the first side; a second movable contact on the second side; a first connection, which is connected with the first movable contact and which is connectable with a first branch of the diverter switch; and a second connection, which is connected with the second movable contact and which is connectable with a second branch of the diverter switch. Each of the first moveable contact and the second movable contact are selectably connectable with each of the fixed contacts.

Selector for an on-load tap changer and on-load tap changer with load transfer switch and selector

A load stepping switch () for uninterrupted changeover between winding taps (n, n+1) on a control winding () comprises &#x2014;a changeover switch () that comprises a first, second and third changeover contact () and can adopt a first position, in which the first and third changeover contacts are connected, a second position, in which the second and third changeover contacts are connected, and a bridge position, in which the changeover contacts are connected; &#x2014;a first fixed contact () that can be connected to a first winding tap; &#x2014;a second fixed contact () that can be connected to a second winding tap; &#x2014;a first moving contact () that can optionally make contact with each of the fixed contacts; &#x2014;a second moving contact () that can optionally make contact with each of the fixed contacts; &#x2014;a main path () that connects the first moving contact to the first changeover contact; &#x2014;an auxiliary path () that connects the second moving contact to the second changeover contact via a current-limiting element (); &#x2014;a switching element () that is connected between the main path and the second changeover contact.

On-load tap changer and method of and system for operating same

The invention relates to a switching system for a tapped transformer with on-load tap changer wherein the tapped transformer comprises

Tap-changer switching system and method of operating same

The invention relates to an on-load tap changer () according to the reactor switching principle for uninterrupted load switching between different tap windings of a tapped transformer (), comprising: &#x2014;an inductor () which is designed as an inductive transition reactance; &#x2014;the inductor () being part of the on-load tap changer ().

On-load tap changer according to the reactor switching principle

In an on-load tap changer () for controlling voltage of a tapped transformer () it is provided that

On-load tap changer, tap-changing transformer for voltage regulation and method for implementing tap changer in the tap-changing transformer

A tap changer for uninterrupted switching between winding taps of a tapped transformer has first and second load branches for each phase to be switched. Each load branch has a main vacuum switch and in parallel thereto a series connection of a switch-over resistance and a respective auxiliary vacuum switch. First and second vacuum switching tubes each contain the main vacuum switch of the respective first and second load branches and the auxiliary vacuum switch of the other of the load branches.

Tap changer and vacuum interrupter for a tap changer of this kind

The invention relates to an on-load tap changer for switching among different winding taps of a step transformer without interruption according to the preamble of the first patent claim. The general inventive concept lies in actuating both the selector contact unit and the switching means for uninterrupted load switching by means of a common motor drive without an energy store being connected therebetween.

On-load tap changer

Growing community of inventors

Wuppertal, Germany

Christian Hammer