Rockwell Automation 1608M MegaDySC User Manual, 800 Amp - 208V - Manual (Page 13)

Rockwell Automation Publication 1608M-UM003A-EN-P - December 2013 13
Installation Chapter 2
3. Remove and save for later step: four (4) hex-head bolts with lock washer
and flat washer in left side of MegaDySC cabinet. [tool required: 9/16-
inch wrench or socket]
4. Remove two (2) electrical knock-outs (EKO) in the bottom-rear panel of
MegaDySC cabinet.
5. Remove the cover plate from the bottom-rear of the ER storage cabinet.
Save the cover and screws for possible later use—they are not needed for
the BTB layout.
System Mounting The MegaDySC system is provided with interconnect bus links between
cabinets; proper line-up is critical. The system must be configured as shown in SR
System Layout, ER SBS system layout, or ER BTB system layout. The system
must be placed on a flat level surface or shimmed during installation to achieve
the same effect.
The 800A MegaDySC Module is shipped separately from the Automatic Bypass
Switchboard and the ER Module. The 800A MegaDySC Module, the Automatic
Bypass Switchboard and the ER Module must be mechanically interconnected
with the supplied hardware and each enclosure must be secured to the floor
(Refer to
Mechanical Interconnection of Cabinets on page 13 and MegaDySC
Floor Mounting on page 15 ).
The cabinets should be brought tightly together and all interconnection bolts
should be installed and tightened before tightening the anchor bolt connections.
Mechanical Interconnection of Cabinets
To attach the 800A MegaDySC Module to the Automatic Bypass Switchboard
use two (2) sets of 3/8-16 [inch-thread/inch] hardware (this is the hardware that
was removed and saved during the pre-installation configuration). All hardware
should be installed from the Automatic Bypass Switchboard side and threaded
into the PEM nuts located in the 800A MegaDySC Module. Each hardware
connection set consists of one (1) 3/8-16 x 1.0 in. bolt, one (1) 3/8 in. split lock
washer, and one (1) 3/8 in. flat washer assembled as shown in
Figure 6 and
Figure 7 . Tighten each bolt to 20 N-m [180 in-lb]. The required wrench size is
9/16 in. (14.3 mm).
To attach the MegaDySC cabinet to the ER storage cabinet in the SBS layout,
install the two 3/8-16 interconnection bolts along the front of the cabinets, as
shown in detail B of
Figure 6 . Tighten each bolt to 20 N-m [180 in-lb].
To attach the 800A MegaDySC Module to the ER Module in the BTB layout,
remove the tie plate from the top of the ER cabinet, discard the sheet of padding
material, and install the tie plate between the two cabinets using four (4) sets of
1/4-20 [inch-threads/inch] screws as shown in . Tighten each screw to 6.7 N-m
[60 in-lb]. The screw heads are Phillips Head.