Assembly Of The Switchgear On Site; General Warnings And Cautions; Preparations; Dimensional Foundation Drawings - ABB UniSec Manual

4. Assembly of the switchgear on site

4.1 General warnings and cautions

WARNING
Once the documents have been prepared for
final mounting, the binding data supplied by
ABB must always be taken into account!
WARNING
In order to obtain an optimal installation
sequence and ensure high-quality standards,
on-site installation of the switchgear must
only be carried out by specially trained and
skilled personnel, or at least by personnel
supervised and monitored by competent and
responsible people.
NOTE
Where switchgear units have roof-mounted
gas vent ducts or large auxiliary circuit
compartments, it must be ensured that the
ceiling height is sufficient for these.
Figure 23. Minimum distances to
the installation room walls with gas
absorbers.
Class AFLR
Figure 24. Minimum distances to the
installation room walls with gas vent
ducts.
Class AFLR
Switchgear supplied with 1 m long
external duct.
(*) >1200 mm for panels with removable circuit-breaker

4.2 Preparations

Before starting
To commence installation on site, the switchgear room must
be absolutely suitable, i.e. provided with lighting and electricity,
fitted with a padlock, ventilation facilities and must also be dry.
All the necessary preparations, such as wall openings, ducts,
etc. for laying the power and control cables as far as the
switchgear, must already have been completed.
Before proceeding with installation:
a) Clean the installation site
b) Visibly trace the perimeter of all the units making up the
switchgear on the slab, taking the minimum clearances of
wall and any obstacles into account.

4.3 Dimensional foundation drawings

4.3.1 Room layout
NOTE
When gas vents or absorbers are foreseen,
there must be a minimum space of 185 mm
between the back of the switchgear and the
installation room wall.
(*)
(*)
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