Rockwell Automation Publication 1512A-UM101B-EN-P - December 2021
23
Chapter 2 Installation – Standard Enclosure
Load Cable Connections
1. See
Front Access – Top Incoming Line Cables and Power Bus on page 19
to open the MV doors.
2. Remove one or more appropriate cable conduit opening plates from the
top or bottom plate of the cabinet (see
). The plate
may be punched or cut to mount conduit.
3. Load cables for the power cell should be routed before control cables. Pull
the cables into the cabinet through the appropriate opening (see
).
4. Remove the front current transformer barrier.
5. Connect the cables to the bus terminal points or directly to the optional
bar style current transformers, and tighten the 1/2-13 hardware to 45 lb•ft
(61 N•m).
6. Connect cable shields (if present) to the ground lug.
7. Reinstall the current transformer barrier and reassemble the cabinet.
ATTENTION:
To avoid shock hazards, lock out incoming power
Power Lock-out Procedure on page 49
) before working on the
equipment. Verify with a hot stick or appropriate voltage measuring
device that all circuits are voltage free. Failure to do so may result in
severe burns, injury, or death.
IMPORTANT
The current transformers may be positioned for top or bottom
cable exit. Follow the appropriate procedure described for your
starter configuration.
IMPORTANT
Cable size cannot exceed 1-1000 MCM, 2-750 MCM, 3-500MCM, or
4-500 MCM per phase.
Stress cones should be internal, non-skirted style only. Do not
use external (skirted-style) stress cones due to space
considerations.
IMPORTANT
Recommended Line and Load Cable Sizes on page 10
.
Refer to Dimensional Drawings provided with order
documentation for additional details that are related to cabinet
floor plan.