ABB ACS880-14 - Page 186

0.80 0.85 0.90 0.95 1.00 1.05 1.10
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
P/P
n
U/U
n
0.70
0.75
0.60
0.96
0.96
Example 1: P
n
for ACS880-14-430A-7 is 400 kW. The input voltage (U) is 660 V. -> U/U
n
=
660 V / 690 V = 0.96 -> P/P
n
= 0.96 -> The derated power P = 0.96 × 400 kW = 384 kW.
To boost the output voltage to correspond the nominal supply voltage 690 V, increase the
DC voltage to 690 V × √2 × 1.03 = 1005 V.
Input voltage of the drive
U
Nominal supply voltage of the drive. For -3 types U
n
= 400 V, for -5 types U
n
= 500 V. For -7 types
U
n
= 690 V but 575 V when P
n
refers to nominal power ratings in the UL (NEC) 575 V rating table.
U
n
Derated output power of the drive
P
Nominal power rating of the drive
P
n
For more information, see ACS880-11, ACS880-31, ACS880-14, ACS880-34, ACS880-17,
ACS880-37 drives product note on voltage boost (3AXD50000691838 [English]).
186 Technical data