Cabinet Air Conditioning - Siemens SINAMICS G130 Engineering Manual

General Engineering Information for SINAMICS
Engineering Information

Cabinet air conditioning

SINAMICS chassis units are forced-ventilated by integrated fans. To ensure an adequate air supply, suitable
openings for the inlet air (e.g. ventilation slots in the cabinet door) and outlet air (e.g. by means of a special hood)
must be provided.
The power unit design must be taken into account. For optimized cooling, components that are subjected to thermal
stresses are arranged along an air duct. The cooling air must flow through this duct vertically from bottom (cooler
region) to top (region heated by operation). It is essential to note this air-flow direction. It must also be ensured that
the warm air can escape at the top.
Warm
discharged air
Cooling
air
Air-flow guidance for S120 Active Interface Module,
frame sizes FI, GI
Ventilation concept for chassis power unit S120 Active Interface Module
Sufficient clearances must be designed into the cabinet layout to guarantee effective cooling. It is absolutely essential
to observe the ventilation clearances specified in the following table. The measurements refer to the external edges
of the relevant units. It should also be taken into account that the clearances do not refer to a closed cabinet, but to
conditions in the immediate external environment.
For further information, please refer to the relevant equipment manuals.
SINAMICS Engineering Manual – May 2008
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© Siemens AG
Air-flow guidance for S120 Active Interface Module,
frame sizes HI, JI