Power Derating - Siemens Sinamics V90 Operating Instructions Manual

2.7.2.3

Power derating

For deviating conditions (surrounding temperature > 40 °C or installation altitude > 1000 m
above sea level) the permissible torque/power must be determined from the following table.
Surrounding temperatures and installation altitudes are rounded off to 5 °C and 500 m
respectively.
Power derating as a function of the installation altitude and ambient temperature
Installation altitude above
sea level (m)
1000
1500
2000
2500
3000
3500
4000
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
Surrounding temperature in °C
< 30 30 to 40
1.07 1.00
1.04 0.97
1.00 0.94
0.96 0.90
0.92 0.86
0.88 0.82
0.82 0.77
General information
2.7 Technical data
45 50
0.96 0.92
0.93 0.89
0.90 0.86
0.86 0.83
0.82 0.79
0.79 0.75
0.74 0.71
55
0.87
0.84
0.82
0.78
0.75
0.71
0.67
77