Ensuring Cooling Air - Siemens SINAMICS SH150 Operating Instructions & Installation Instructions

Assembly

5.5 Ensuring cooling air

4. Attach the DC cable using a hexagonal nut DIN EN ISO 4032.
①
②
Figure 5-4
5. Fasten the yellow KM cable
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.
62
Note that the bolt end protrusion must be at least two thread pitches. Observe the torque of
50 Nm.
Sequence: M12 DIN EN ISO 4014 screw, DIN 6796 spring washer cable lug, busbar
Sequence: Busbar, ISO 7089 washer, SN60727 spring washer (as alternative for the washer and
spring washer, you can use a DIN 6796 spring washer), DIN EN ISO 4032 hexagonal nut
DC cable
torque of 6 Nm.
Figure 5-5 Connecting the KM cable
③
using the M6 combination screw provided and tighten to a
SINAMICS SH150 6SL3805
Operating Instructions 05/2020