COORDINATING INSTALLATION AND CONNECTION OF A MOTOR CONTROL CENTER SUBUNIT HAVING MOVEABLE LINE CONTACTS

摘要

A system and method are provided for coordinating the installation and removal a motor control center subunit with the power connection and interruption thereof. A system of interlocks and indicators causes an operator to install a motor control center subunit into a motor control center, and connect supply and control power thereto, in a particular order. Embodiments of the invention may prevent actuation of line contacts of the bucket, and shield the line contacts, until the bucket is fully installed in the motor control center. Other embodiments also prevent circuit breaker closure until the line contacts are engaged with a bus of the motor control center.

主权项

1. A control module for a motor control center comprising:
a housing constructed to be received within a frame of the motor control center; a stab assembly comprising:
a stab guide; andat least one line contact coupled to the stab guide, the at least one line contact moveable between a retracted position and an extended position; and a rotatable latch disposed proximate a top surface of the stab guide.