Load switch for a step switch

Details Load switch for a step switch Load switch for a step switch

H - Electricity

01

H

H01H 9/00 (2006.01)

Patent

CA 2241136

The invention relates to a load switch for a step switch, permanent main contact pairs which effect wattless switching being provided for each phase to be switched. In the fixed state, one of the permanent contact pairs is closed and conducts the constant current. To control the mobile permanent contacts in each of the permanent contact pairs, it is proposed that a cam disk with a control cam for each phase to be switched should be fitted on a switching shaft. A roller engages with each of these control cams and acts on the appropriate mobile permanent main contact via mechanical coupling elements.

L'invention concerne un commutateur de réglage en charge pour un commutateur à gradins. Des paires de contacts principaux permanents engendrant une commutation par courant déwatté sont disponibles pour chaque phase à commuter. A l'état stationnaire, une paire de contacts principaux permanents est fermée et conduit le courant permanent. Pour commander les contacts principaux permanents mobiles de chaque paire de contacts principaux permanents, il est proposé de disposer sur un arbre de commutation un disque à cames qui possède une came de commande pour chaque phase à commuter. Un rouleau s'engage dans chacune de ces cames de commande et agit sur le contact principal permanent concerné au moyen d'éléments d'accouplement mécanique.

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