6 | Technical data
STOBER
74
02/2019 | ID 442728.05
Derating – Effect of the installation elevation
5000
20
0
40
100
60
80
0
1000 2000 3000 4000
87 %
I
[%]
N
Installation altitude [m]
Fig. 16: Derating the nominal current depending on installation elevation
5000
20
0
40
100
60
80
0
1000 2000 3000 4000
67 %
Installation altitude [m]
Max. perm. voltage [%]
Fig. 17: Derating the voltage depending on installation elevation