Siemens SINAMICS S120 Configuration Manual page 42

Mechanical properties of the motors
3.1 Cooling
Materials used in the cooling circuit
EN-GJL-200 and aluminum alloy are used in the cooling circuit.
The cooling circuit does not contain any non-ferrous metals.
The heatsink material is not resistant to seawater. It is not permissible to directly cool the
motors using seawater.
If there is a danger of frost, the appropriate anti-freeze measures are required for operation,
storage and transport. For example, emptying and blowing out with air, supplementary
heating system for the cooling ducts.
Cooling system
A heat-exchanger unit must be used to ensure a coolant intake temperature of +30 °C. It is
possible to operate several motors from a single cooling system.
The cooling system is not part of the motor scope of supply. For the addresses of cooling
system manufacturers, please refer to the relevant catalog.
Figure 3-1
42
CAUTION
Cooling circuit
Configuration Manual, (APH4S), 08/2008, 6SN1197-0AD64-0BP1
1PH4 Induction Motors