Siemens SINAMICS G120 Hardware Installation Manual page 69

Operational altitude derating
The figures below show the derating required according to altitude.
Permissible output base load current [%]
High overload (HO ) and light overload (LO)
Current derating for altitude, FSA ... FSF
Permissible input voltage [%]
Voltage derating for altitude, FSA ... FSGX
Power Module PM240
Hardware Installation Manual, 07/2009, A5E00807525B AD
100
90
80
70
60
0 1000 2000
3300 6600
Installation altitude above sea level [m]
100
90
80
77
70
60
0 1000
3300
Installation altitude above sea level [m]
Permissible output base load current [%]
High overload (HO) and light overload (LO)
3000 4000
9800 13000
[ft]
Current derating for altitude, FSGX
2000 3000 4000
6600 9800 13000
[ft]
Technical specifications
100
90
85
80
70
60
0 1000 2000
3300 6600
Installation altitude above sea level [m]
3000 4000
9800 13000
[ft]
69