On-load tap changer of a step switch

H - Electricity – 01 – H

Patent

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Details

H01H 25/06 (2006.01) H01F 29/04 (2006.01) H01H 9/00 (2006.01) H02P 13/06 (2006.01)

Patent

CA 2216276

The invention relates to an on-load tap changer of a step switch with an energy accumulator having a lifting slide continuously movable by a drive shaft and a depressor actuating a switching shaft. According to the invention, on the switching shaft there is an axially movable insert bearing cam discs to actuate vacuum switches and mechanical switching components. Depending on the switching direction, i.e. the linear movement of the lifting slide of the energy accumulator, the switching insert is taken to an upper or lower position on the switching shaft in such a way that different cam discs become operative. It is possible with this on-load tap changer to make asymmetrical circuits in which there is the same sequence of switchgear to be moved or actuated regardless of the switching direction.

L'invention concerne un commutateur de réglage en charge d'un commutateur à gradins comportant un accumulateur d'énergie, qui présente un chariot de levage déplaçable en continu par un arbre primaire et un élément de sortie qui actionne un arbre principal. Selon l'invention, un ensemble de commande monté coulissant dans le sens axial sur l'arbre principal porte des disques à came pour actionner des interrupteurs à vide et des éléments de commande mécaniques. L'ensemble de commande est déplacé sur l'arbre principal dans une position supérieure ou dans une position inférieure, en fonction du sens de commutation, c'est-à-dire du mouvement linéaire du chariot de levage de l'accumulateur d'énergie, de manière à ce que différents disques à came entrent en fonction. Ce commutateur de réglage en charge permet de réaliser des circuits asymétriques qui comprennent la même séquence d'éléments de commande à déplacer ou à actionner, indépendamment du sens de commutation.

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