3.5 Operation diagrams
The technical data of the frequency inverters refer to the nominal point which was
selected to enable a wide range of applications. A functionally and efficient
dimensioning (derating) of the frequency inverters is possible based on the following
diagrams.
Site altitude
100
85
60
40
20
55
45
3000
1000
2000 4000
3000
1000
2000
4000
Power reduction (Derating),
5%/1000 m above sea level,
h = 4000 m
max
max. coolant temperature,
3.3 °C/1000 m above sea level,
Mounting altitude in m above sea level Mounting altitude in m above sea level
Output current in %
Coolant temperature in °C
Coolant temperature
100
80
63
40
20
0 10
20
30
40 50 55
Power reduction (Derating)
2.5%/K upper 40 °C, T = 55 °C
max
Output current in