AT274973B

AT274973B - Step switch for transformers

Info

Publication number: AT274973B
Application number: AT214767A
Authority: AT
Inventors: Gerhard Ing Broedner
Original assignee: Liebknecht Transformat
Priority date: 1966-11-17
Filing date: 1967-03-07
Publication date: 1969-10-10

Description

  

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  Stufenschalter für Transformatoren 
Die Erfindung betrifft einen Stufenschalter für Transformatoren, bei dem die Verbindungsleitungen vom Anzapfwähler zu dem räumlich darüber angeordneten, in Form eines Isolierzylinders ausgebildeten Lastschaltergefäss im Inneren des Wählers nach oben geführt sind.-
Es ist bekannt, bei Stufenschaltern für Transformatoren die Verbindungsleitungen vom Anzapfwähler zu dem räumlich darüber angeordneten Lastschaltergefäss käfigartig aussen um Wähler und Lastschaltergefäss verteilt anzuordnen und von aussen an entsprechenden Kontakten des Lastschaltergefässes anzuschliessen. Diese Leitungen sind entweder unten zentral aus dem Wähler herausgeführt oder an besonderen Kontakten des Wählerstabkäfigs angeschlossen.

   Diese Leitungen müssen naturgemäss ausreichenden Abstand von den übrigen spannungsführenden Teilen haben, insbesondere von den Teilen der Mechanik des Wählers, die meist Sternpunktpotential führt oder aber 
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 wird der nutzbare Raum im Inneren des Lastschaltergefässes von den Verbindungsleitungen kaum beansprucht. 



   Die Erfindung wird nachstehend an einem Ausführungsbeispiel der Zeichnung näher erläutert. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



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  Step switch for transformers
The invention relates to a tap changer for transformers, in which the connecting lines from the tap selector to the load switch vessel arranged in the form of an insulating cylinder in the interior of the selector are led upwards.
It is known, in tap changers for transformers, to arrange the connecting lines from the tap selector to the load switch vessel arranged above it in a cage-like manner on the outside around the selector and load switch vessel and to connect them from the outside to corresponding contacts of the load switch vessel. These lines are either led out centrally from the bottom of the selector or connected to special contacts on the selector rod cage.

   These lines must of course have a sufficient distance from the other live parts, in particular from the parts of the selector's mechanics, which mostly have star point potential or else
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 the usable space inside the load switch compartment is hardly used by the connecting lines.



   The invention is explained in more detail below using an exemplary embodiment of the drawing.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims

The drawing shows in section the load switch housing consisting of an insulating cylinder which is mechanically connected by means of the metal fittings -2- to a tap selector underneath, not shown in any further detail in the drawing. The connecting lines -3, coming from the tap selector, are made of insulating material via bushings --4-- EMI2.1 --5-- are removed so that the required dielectric strength is achieved.

The bushing contact pieces - are connected to the flat conductors --7 - at their upper ends EMI2.2 diePATENT CLAIM: Tap changer for transformers, in which the connection lines from the tap selector to the load switch compartment arranged spatially above it, in the form of an insulating cylinder, are led upwards inside the selector and inserted from below through the bottom of the circuit breaker compartment made of insulating material or through the bushings arranged there into the load switch compartment, EMI2.3 arranged flat conductors are provided, both ends of which are connected to inwardly protruding into the insulating cylinder bushing contact pieces, of which the lower with the connecting lines coming from the tap selector and the upper with the load switch terminals are connected.

** WARNING ** End of CLMS field may overlap beginning of DESC **.