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Derating factor 0.85
Derating factor 0.80
For a more accurate derating, use the DriveSize PC tool.
Derating for output voltage boosting
Note: This information is only valid for drives whose BLCL filters have the type code marking
+V991.
The drive can output a higher motor voltage than the supply voltage. This can require
derating of the drive output power depending on the difference between the supply voltage
and the output voltage to the motor for continuous operation.
This drawing shows the required derating. It is valid for all supply voltage ranges.
P
P
N
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.4
0.5
0.6
Note: The drive voltage rating must always be selected according to the boosted voltage
value.
Note: Auxiliary voltage transformer must be set according to supply voltage levels. If drive
selection based on boosted voltage level causes unsuitable tap setting to auxiliary voltage
transformer, consult your local ABB representative.
0.7
0.8
0.9
1.0
U
1.1
1.2
U
N
Technical data 121
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