Operation of a dual movement cut-off chamber by means of...

H - Electricity – 01 – H

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H01H 3/46 (2006.01)

Patent

CA 2606054

Afin de réduire l'énergie de coupure d'un disjoncteur haute ou moyenne tension, la chambre de coupure (10) comprend deux contacts (12, 14) mobiles en sens inverse, actionnés par l'intermédiaire d'un seul dispositif (20). Les deux contacts (12, 14) sont entourés par une enveloppe isolante (18) de forme tubulaire, couplée de façon fixe au contact principal (12). L'actionnement des contacts (12, 14) est effectué par un dispositif à levier (24) dont chaque bras est couplé à une biellette, l'une des biellettes (32) étant solidarisée à l'enveloppe isolante (18) et l'autre (34) au deuxième contact (14). Le guidage du tube de manoeuvre (18) sur les contacts principaux (12b, 14b) permet d'améliorer la coupure en gardant du gaz propre entre ces contacts principaux.

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