Patent ID: 8410389
Filing Date: 2013-04-02
Classification: H01H,H02B

Abstract:
1. A motorized drive system for a disconnector used in electrical switchgear, comprising: a fixed busbar contact fixed within the switchgear and electrically coupled within the switchgear to a line supply busbar that is electrically coupled to a line supply external to the switchgear; a fixed breaker contact fixed within the switchgear and electrically coupled to a circuit breaker fixedly mounted within the switchgear; a movable contact that is electrically conductive and movable to a first position to electrically connect the fixed busbar contact with the fixed breaker contact in a service configuration and to a second position to electrically disconnect the fixed busbar contact from the fixed breaker contact and thereby disconnect the circuit breaker from the line supply in an isolated configuration; and a motor fixed within the switchgear and coupled to the movable contact such that rotation of the motor causes the movable contact to move between the first and the second positions wherein the first fixed busbar contact includes three fixed busbar contacts each fixed within the switchgear and each electrically coupled to respective ones of three line supply busbars each electrically coupled to a distinct phase of the line supply, wherein the fixed breaker contact includes three fixed breaker contacts each fixed within the switchgear and electrically coupled to a corresponding connector of the circuit breaker for supplying a respective one of the distinct phases to the circuit breaker, wherein the movable contact includes three movable contacts that are electrically conductive, and wherein the motor is coupled to the three movable contacts such that rotation of the motor causes the three movable contacts to move together between the first and second positions; and a drive shaft coupled to the motor by a gear or belt assembly; and a drive bar coupled to the drive shaft and transverse to a length of the drive shaft, the drive bar being configured to cause, under rotation of the drive shaft, the three movable contacts to move among the first and second positions.