Rockwell Automation Publication 2100-IN012G-EN-P - August 2016
77
Operator Handle and Unit Interlock
Chapter 6
Figure 39 - Unit Interlock to Prevent Insertion - Unit Completely Withdrawn
In this position, the unit is partially removed from the MCC and the
intermediate slot in the interlock plate is in line with the bushing in the unit
support pan. When the unit is locked in this position, the unit power and
ground stabs are disengaged. This position can be used to prevent insertion of a
unit into the MCC.
Figure 40 - Unit Interlock to Prevent Insertion - Horizontal Operating Handle
ATTENTION:
When working on or near energized electrical equipment,
follow established electrical safety-related work practices. Refer to NFPA 70E
Standard for Electrical Safety in the Workplace.
We recommend that maintenance performed on the MCC units be performed
away from the MCC in a suitable work area, when possible.