Derating Data - Siemens SINAMICS S150 Operating Instructions Manual

12.2.1

Derating data

Current derating as a function of the site altitude and ambient temperature
If the cabinet units are operated at a site altitude >2000 m above sea level, the maximum
permissible output current can be calculated using the following tables. The site altitude and
ambient temperature are compensated here. The degree of protection selected for the
cabinet units must also be taken into account.
Table 12-2 Current derating as a function of ambient temperature (inlet air temperature at the air inlet of the cabinet unit)
and site altitude for cabinet units with degree of protection IP20/IP21/IP23/IP43
Site altitude above
sea level in m
0 to 2000
Up to 2500
Up to 3000
Up to 3500
Up to 4000
Table 12-3 Current derating as a function of the ambient temperature (inlet air temperature at the air inlet of the cabinet
unit) and site altitude for cabinet units with degree of protection IP54
Site altitude above
sea level in m
0 to 2000
Up to 2,500
Up to 3,000
Up to 3,500
Up to 4,000
Drive converter cabinet units
Operating Instructions, 07/07, A5E00288214A
20 25
100%
100%
100%
100% 97.8%
20 25
100%
100%
100%
100% 96.7%
97.8% 92.7%
Ambient temperature in °C
30 35
100%
96.2%
96.7% 92,3%
92.7% 88.4%
Ambient temperature in °C
30 35
96.3%
96.2% 92.5%
92.3% 88.8%
88.4% 85.0%
Technical specifications
12.2 General technical specifications
40 45
95.0%
96,3% 91.4%
92.5% 87.9%
88.8% 84,3%
85.0% 80.8%
40 45
95.0% 87.5%
91.4% 84.2%
87.9% 81.0%
84.3% 77.7%
80.8% 74.7%
50
87.0%
83.7%
80.5%
77,3%
74.0%
50
80.0%
77.0%
74.1%
71.1%
68.0%
477