Assembly Of The Switchgear At Site; General Site Requirements; Foundation Frame On A Concrete Floor - ABB UniGear ZS3.2 Instruction Manual

Assembly of the switchgear at site

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In the interests of an optimum installation sequence
and the assurance of a high quality standard, site
installation of the switchgear should only be car-
ried out by specially trained skilled personnel, or at
least supervised and monitored by responsible
persons.

General site requirements

5.1
On commencement of installation at site, the switch
room must be completely finished, provided with
lighting and site electricity supply, lockable, dry and
with facilities for ventilation. All the necessary prepa-
rations such as wall openings, ducts, etc., for lay-
ing of the power and control cables up to the
switchgear must already be completed.
Compliance with the conditions for indoor switch-
gear to VDE 0670 part 1000 and IEC 60694, in-
cluding the conditions for the „minus 5 indoor" tem-
perature class must be ensured.
5.2

Foundation frame on a concrete floor

(Figures 5/1 to 5/2)
The switchgear is preferably to be erected on a
foundation frame set into the switch room floor.
The guideline structural data listed below facilitate
a rough calculation of the space required and pre-
liminary planning of the room design for a
switchgear project. When the final construction
documents are compiled, the binding data sup-
plied by ABB Xiamen Switchgear Co., Ltd. must
always be taken into account!
The stipulations of DIN 43 661 are also to be com-
plied with when the foundation is laid. This particu-
larly applies to the evenness and straightness tol-
erances as a precondition for perfect installation of
the switchgear.
The foundation frame, consisting of one or more
parts depending on the size of the switchgear, can
be supplied with the switchgear by ABB Xiamen
Switchgear Co., Ltd.; it is usually laid by site per-
sonnel and should if possible be aligned and in-
spected under the supervision of a ABB specialist.
Installation of the foundation frame:
• If the foundation frame consists of several part
60.1/60.2, bolt these together at the prepared
joint locations using links 60.3 in the specified
sequence and so as to achieve a level surface.
• Place the foundation frame precisely in the spe-
cified position on the concrete floor in accordan-
ce with the installation drawing.
• Enter jacking screws 60.8 and place steel strips
60.4 below them.
• Carefully align the foundation frame along the
entire surface and to the correct height by screw-
ing the jacking screws down by an appro-priate
amount and using a levelling instrument.
The top edge of the foundation frame should be
5-12 mm above the finished floor surface. This
faci-litates erection and alignment of the
switchgear panels. Tolerances for laying of the
frame to DIN 43 661, version A,
e.g. evenness tolerance:
± 1 mm within a measuring length of 1 m,
e.g. straightness tolerance:
maximum 1 mm per m, but not more than 2 mm
over the entire length of the frame.
• Slide brackets 60.5 against the frame at two
points - for each 3 m of frame length -, secure
them to the concrete floor with plugs 60.6 and
bolts 60.7, and weld them to the frame. The set
position of the frame on the concrete floor must
not be altered during this operation!
• Weld the foundation frame parts together. Grind
projecting parts and weld seams on the top of
the frame flat.
• Make the necessary preparations for perfect
earthing of the foundation frame with 30 x 4 mm
galvanized steel strip. Two connections are nec
essary for long switchgears.
• When the floor topping is applied, carefully back
fill the foundation frame, leaving no gaps.
• The foundation frame must not be subjected to
any injurious impacts or pressures, particularly
during the installation phase.
If these conditions are not fulfilled, problems dur-
ing assembly of the switchgear and possibly with
movement of the withdrawable parts and opening
and closing of the doors cannot be ruled out.
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