Siemens SINAMICS DCM Manual page 47

Technical data
4.2 Environmental requirements
Ambient temperature
Table 4- 5 Ambient temperature Tu
Use Tu [°C]
Storage -40 ... +70
Transportation -40 ... +70
Operation 0 ... +45
0 ... +40
0 ... +55
Installation altitude above sea level
≤ 1,000 m With rated DC current
> 1,000 m With derating; see the section titled "Derating" after the unit data
48
Comment
Only applies when product is in its original packing
Only applies when product is in its original packing
for units with a rated DC current ≤125 A (self-ventilated units),
at rated DC current
for units with a rated DC current ≥210 A (force ventilated units),
at rated DC current
With derating; see the section titled "Derating" after the unit data
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SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001