ABB ZS1 Instruction Manual page 23

5.2.1 Foundation frame on concrete floor
(Figures 5/1, 5/2 and 5/5)
The foundation frame, consisting of one or more
parts depending on the size of the switchgear, can
be supplied with the switchgear by ABB; it is
usually laid by site personnel and should if possible
be aligned and inspected under the supervision of
a ABB specialist.
Installation of the foundation frame:
• If the foundation frame consists of several parts
60.1/60.2, connect these together at the
prepared joint locations using links 60.3 and
bolts (foundation frame bag group) in the
specified sequence and so as to achieve a level
surface.
• Place the foundation frame precisely in the
specified position on the concrete floor in
accordance with the installation drawing.
• Enter jacking screws 60.8 and place steel strips
60.4 below them.
• Carefully align the foundation frame horizontally
along the entire surface and to the correct height
by screwing the jacking screws down by an
appropiate amount and using a levelling
instrument. The top edge of the foundation
frame should be 2 mm above the finished floor
surface. This facilitates erection and alignment of
the panels. In some cases, this means that the
material thickness of an addtional floor covering
to be fitted later must be taken into account
separately. Tolerances for laying of the frame to
DIN 43 661, version A:
– Evenness tolerance:
Deviation max. ± 1 mm within a measured
length of 1 m,
– Straightness tolerance:
Deviation max. 1 mm per metre, but no more
than 2 mm for 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 dowels 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
necessary for long switchgear.
• When the screed is applied, carefully backfill the
foundation frame, leaving no gaps.
The upper edge of the screed must be up to
3 mm below the upper edge of the frame. Take
account of the thickness of any additional floor
covering.
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• The foundation frame must not be subjected to
any injurous impacts or pressures, particularly
during the installation phase.
If these conditions are not fulfilled, problems during
assembly of the switchgear and possibly with
movement of the withdrawable parts and opening
and closing of the doors cannot be ruled out.
5.2.2 Raised false floor
(Figures 5/3 and 5/4)
Procure the raised false floor locally from a suitable
supplier (ABB can arrange if necessary). It must
meet all the specific requirements of the
switchgear. No additional intermediate frame is
required.
5.3 Erection of the panels
(Figures 3/5 to 3/9, 3/12, 3/13, 3/19, 5/6, 5/8
and 5/9)
For local erection of the ZS1 switchgear bolts of
tensile strength class 8.8 are supplied in all cases.
The following table contains the recommended
rated tightening torques. These rated tightening
torques also apply to bolts of tensile strength class
10.9, which are used in exceptional cases.
Thread
M 6
M 8
M 10
M 12
M 16
1)
The rated tightening torques for fasteners without lubrication
are based on a coefficient of friction for the thread of 0.14
(the actual values are subject to an unavoidable, partly not
inconsiderable, spread).
2) Rated tightening torques for fasteners with lubrication in
accordance with DIN 43 673.
3)
Thread and head contact surface lubricated.
Any tightening torques which deviate from those in the
general table (e.g. for contact systems or devise terminals)
are to be taken into account as stated in the detailed
technical documentation.
It is recommended that the threads and head contact
surfaces of bolts should be lightly oiled or greased, so as to
achieve a precise rated tightening torque.
• Withdraw the withdrawable parts 13 out of the
panels and store them in a safe place.
• Dismantle lifting lugs 1.5.
• Transport the panels to the prepared installation
point in the sequence shown on the switchgear
plan.
Recommemded
1)2)
tightening torque
Nm
3)
Lubricant
without Oil or
grease
10.5 4.5
26 10
50 20
86 40
200 80
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