Free-wheeling clutch for a motor control center subunit...

H - Electricity – 02 – B

Patent

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H02B 11/127 (2006.01)

Patent

CA 2698957

A system for connecting supply power to a motor control center pull-out (16) subunit with moveable supply power contacts (4S,48,50). After a motor control center subunit is secured into a motor control center compartment, the supply power contacts (46,48,50) may be advanced to engage supply power buses (88,90,92). For disconnection, the supply power contacts may be retracted and isolated from the buses before physical removal of the subunit. A free wheeling mechanism (202) prevents supply power contacts (46,48,50) from advancing and retracting past a preset travel range.

L'invention concerne un système et un procédé permettant de connecter une alimentation à des composants de commande de moteur électrique, lesquels incluent l'utilisation d'une sous unité d'un centre de commande de moteur munie de contacts d'alimentation mobiles. Après qu'une sous unité de centre de commande de moteur est fixée dans un compartiment de centre de commande de moteur, les contacts d'alimentation peuvent être avancés pour mettre en prise des bus d'alimentation. Pour la déconnexion, les contacts de l'alimentation peuvent être retirés et isolés des bus avant le retrait physique de la sous unité. Un mécanisme de roue libre empêche les contacts d'alimentation d'avancer et de se retirer au-delà d'une plage de trajet préréglée.

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