ABB UniSec SDS Installation Manuals page 25

D I S T R I B U T I O N S O LU T I O N S
Figure 47. Places for screws
d) Insert 8 bolts (M10x20 hexagonal with flange)
and 8 nuts (M10x20 hexagonal with flange) into
the cable compartment (front, lower part of the
units), but do not tighten them yet.
Figure 48. Screw positions
e) Use a screwdriver to trim the unit alignment.
Tighten all the bolts from the front.
NOTE
Do not remove ceiling frame in the case of functional
units with roof applications and SBR units
f) For WBC and WBS units, insert 6 hexagonal bolts
with the relative nuts.
Figure 49. Screw positions for WBC – WBS units
3.5.4 Assembling the remaining switchgear units
After connecting two units, bring the third unit to
the place of installation. Then repeat the following
operations:
a) Removing the roof plates
b) Connecting the units
c) Repeat the same operations for the remaining
units.
3.5.5 Switchgear fastening to the floor
Floor preparation
The panels must be positioned on a standard
reinforced concrete floor. If necessary, the floor
must be prepared with raceways for routing the
power cables. The preparation tasks are the same
for all types of panels (400-630 A).
To reduce the depth of the raceways for 400-630 A
panels to 350 mm (or even do away with them in
certain cases), the cubicles can be installed on a
raised base made of reinforced concrete, which
must be prepared at the same time as the
construction works of the building in question.
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