ABB UniGear ZS1 - Page 41

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6. Assembly of the switchgear at site
Method of installation B – Installation on
anchoring bolts
The general foundation drawing is given in
following according to the parameters of the
units.
• Clean the switchgear installation area
carefully
• On the slab, visibly trace the perimeter of all
the units making up the switchgear
according to the relevant drawing, taking the
minimum wall and obstacle clearances into
account
• Level the floor both longitudinally and
transversally, evenness tolerance is ± 1mm
over a measuring length of 1 m
• Drill the floor at the intended fixing points,
referring to the slab drilling drawings. To
make the holes, use a hammer drill with a bit
according to the steel plugs used
• Insert the plugs in the holes and put the
individual panels on the traced perimeters of
the units to create the switchgear
• Level the units and then bolt them together
in the front and rear part
• Fix the units with bolts with special washers
(the coupling material is supplied on request)
• In the case of a metal floor, use the
attachment according to the figure. To make
the holes, use a drill with a suitable bit for the
type of fixing to be made (through or
threaded hole).
Method of installation C – Installation on bolts
for raised floor
In most cases, the floating floor is created by a
steel structure in which the welded steel frame is
installed. A frame produced using suitable steel
profiles is used. ABB does not supply this frame.
- Evenness tolerance ± 1 mm over a measuring
length of 1 m.
- Straightness tolerance 1 mm per 1 m.
• Clean the installation area.
• After installation of the frame, take any
necessary measures for perfect earthing of
the frame with galvanized steel strips with
min. dimensions 30 x 4mm. Two earthing
connections are recommended for a panel
row longer than approx. 5 panels.
• Place the panels on the frame according to
the relevant foundation drawings, taking the
minimum wall and obstacle clearances into
account.
• Level the panels and then bolt them together
in the front and rear part.
• Carry out attachment by welding the outside
panels to the steel floor frame in the place
where the frame juts out from the switchgear
bottom, i.e. on the outside lateral walls of the
unit row. This method of installation is not
recommended if seismic resistance is
required.
• In the case of a metal floor, use attachment
according to the figure. To make the holes,
use a drill with a suitable bit for the type of
fixing to be made (through or threaded hole).