Rockwell Automation Publication 1512A-UM101B-EN-P - December 2021
17
Chapter 2 Installation – Standard Enclosure
1. Position the left side section on a level surface and secure the section in
place with M12 (1/2 in.) floor mounting bolts (refer to
).
2. When joining NEMA/EEMAC Type 12 sections, apply a continuous 3 mm
(1/8 in.) wide bead of silicon sealer around the perimeter of one section.
3. Remove the side bus access covers if applicable.
4. Position the right section against the left section. Verify that the surface
is level.
5. Secure the sections together using the 1/4-20 self-tapping screws (12 lb•ft
[15 N•m]). Thread the screw through the 7 mm (0.281 in.) clearance hole
to the corresponding 6 mm (0.219 in.) pilot hole. To access the front
clearance holes of the left-side cabinet, open the medium voltage doors.
To access the rear clearance holes, remove the rear covers of the starter. If
rear access is not available, refer to
Front Access – Top Incoming Line
Cables and Power Bus on page 19
Front Access – Bottom Incoming
.
6. Secure the right section to the floor using M12 (1/2 in.) floor mounting
Figure 7 - Joining Sections
Access to the Power Bus
Rear access is the preferred access method for attaching line cables and for
making bus splice connections. However, these procedures can be done with
front-only access. Front access requires more time and disassembly of the
equipment to complete this procedure.
ATTENTION:
The mounting surface for the equipment must be flat
and within ±1 mm per meter. Installing metal shims is an acceptable
method of compensating for mounting surfaces that are out of
tolerance. Mounting surfaces that are not flat may inhibit proper set-
up and operation of the latches and interlocks.
Front
Fro
nt
Side Bus
Access Cover
0.219 Pilot
Holes (5x)
0.281 Pilot
Holes (5x)
0.281 Pilot
Holes (5x)
0.219 Pilot
Holes (3x)
ATTENTION:
This procedure requires contact with medium voltage
components. To avoid shock hazards, lock out incoming power
before working on the equipment (See
). 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.