3
Hard S1 materials include steel, for example.
Table 5-2 Tightening torques for screw terminals for copper cables without cable lug
1)
Screw type Set screws and
headless screws
Head screws with
slit
Head screws with
hexagon profile
nm in - lb nm in - lb nm in - lb
M2 - - -
M2.5 0.25 2.2 0.5 4.4 0.5 4.4
M3 0.3 2.7 0.6 5.3 0.6 5.3
M3.5 0.5 4.4 1.0 8.9 1.0 8.9
M4 0.8 7.1 1.3 11.5 1.3 11.5
M5 1.0 8.6 2.5 22.1 2.5 22.1
M6 1.3 11.5 3.0 26.6 3.5 31.0
M8 1.8 15.9 3.9 34.5 7.2 63.7
M10 - - 4.8 42.5 13 115
M12 - - - - 18 159.3
M16 - - - - 30 265.5
Observe the tightening torques of the terminal manufacturer and the test torques according to
DIN EN 60999-1, VDE 609-1
5.4 Mounting fans
You must mount the fans, if, for logistical reasons, the fans were separately supplied. Proceed
as described in the section "Mounting fans" of Chapter "Replacing fans".
See also
Replacing a fan (Page 82)
5.5 Ensuring cooling air
The cooling air for the power unit is drawn in from the front through the ventilation grilles in the
cabinet doors. The warmed air is expelled above the fan through the perforated top cover or the
ventilation grilles in the top cover.
Make sure that the air that is supplied is free of dust or any other electrically conductive
material. Avoid environmental conditions that could cause condensation. Seal the cable
connector panels from the top.
Mounting
5.5 Ensuring cooling air
SINAMICS SL150 6SL38600UL432AA0Z
Operating Instructions Rev.201910281433 EXAMPLE 55
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