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4 . eq u I p m eN T I N s Ta L L aT I o N
The floor channels under the front and rear
switchgear anchor points (see Fig. 4.2) should be
embedded in a level concrete slab with their top
surfaces flush with the finished floor. It is essential
that these steel channels be level and aligned with
each other prior to final anchoring, to prevent
distortion of the switchgear structure, to assure
proper mechanical and electrical connections
between shipping splits, and to assure proper
interfacing to other close-coupled equipment.
ABB switchgear and load center substations
are frequently mounted on steel floors and/or
structural steel in industrial installations (such
as a mezzanine) to minimize usage of production
floor space.
Regardless of the type of mounting surface, the
requirement for a smooth level surface remains.
If studs or anchor bolts are to be used, they should
be installed in the foundation as it is poured. It is
important that the studs or bolts are spaced to
agree with dimensions given on the job drawings.
The dimensions between anchor bolts for a
particular installation are dependent upon
the configuration of equipment ordered. The
dimensions shown on Fig. 4.2 cover the entire
standard enclosures available for AKD-20 and
Entellisys switchgear.
Fig. 4.3 illustrates the space available for conduit
and/or cable entrance through the bottom or top
of each equipment section. The space required for
control wiring entry to the optional wiring trough
is also shown.
—
Fig. 4.2
Indoor enclosure
anchor locations
—
Plan view
Embedded “C” Channel, if used
