Power Losses And Air Cooling Requirements - Siemens SINAMICS G120P Hardware Installation Manual

Installing/Mounting

3.2 Power losses and air cooling requirements

To ensure the safe operation of the equipment, it must be installed and commissioned by
qualified personnel in full compliance with the warnings laid down in this manual.
Take particular note of the general and regional installation and safety regulations
regarding work on dangerous voltage installation (e.g. EN 61800-5-1) as well as the
relevant regulations regarding the correct use of tools and personal protective equipment
(PPE).
3.2 Power losses and air cooling requirements
Cooling requirements
Depending on the power losses of the various components a specific cooling air flow is
required to protect the components from overheating. The following procedure shows how to
calculate the required air flow.
1. Add the power losses of the respective components
2. Calculate the airflow required, using the formula
3. Ensure that no equipment is installed that has a negative influence on the flow of the
4. Ensure that the cooling vents in the Power Module are positioned correctly to allow the
14
WARNING
cooling air.
free movement of air.
Power Module PM230, IP20 / Push through
Hardware Installation Manual, 03/2012, A5E03448282B AA