REMOTE DRIVE FOR DISCONNECTOR/ISOLATOR USED IN SWITCHGEAR.

摘要

A remotely controlled, motorized drive system for a disconnector (106) used in switchgear (100). An operator pushes a button on a remote control, which signals a receiver (126) in the disconnector to engage a motor (204) that is coupled to a drive shaft (206). The drive shaft causes movable contacts (202) of the disconnector to be moved into engagement or out of engagement with sets of fixed contacts (110) in the switchgear that are connected to the line supply and to the circuit breaker (104) that is bolted into the switchgear. One set of contacts is electrically coupled to the line supply, which can carry up to three phases of current. Another set of contacts is connected to corresponding terminals of the circuit breaker. A second motor controls movement of a grounding bar that grounds the circuit breaker to earth. Indicator lights (118) on the switchgear panel indicate the position of the disconnector for visual confirmation of the same.