ABB ACH580-31 - Output Voltage Boost Derating

UL (NEC) Ratings
FrameDerating factor (k) for the minimum switching frequenciesACH580-
31-…
12 kHz8 kHz4 kHz2 kHz1 kHz
R30.520.741.01.01.0023A-4
R60.520.671.01.01.0027A-4
R60.520.671.01.01.0034A-4
R60.520.671.01.01.0044A-4
R60.520.671.01.01.0052A-4
R60.520.671.01.01.0065A-4
R60.520.671.01.01.0077A-4
R8-1.01.01.01.0096A-4
R8-1.01.01.01.0124A-4
R8-0.721.01.01.0156A-4
R8-0.631.01.01.0180A-4
Output voltage boost derating
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.
400 V and 480 V drive types
This graph shows the required derating for 400 V and 480 V drive types.

0.80 0.85 0.90 0.95 1.00
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
P/P
n
U/U
n
0.875
0.975
0.70 0.750.650.60
Actual supply voltage to the drive. (Nominal values: U = 400 V or U = 480 V when
P
n
refers to nominal power ratings in the UL (NEC) tables.)
U
Motor nominal voltage or the required drive output voltage U
n
Derated output power of the drive P
Nominal power rating of the drive P
n
Technical data 177