ABB ACS580-07-0495A-4 - Altitude Derating; Deratings for Special Settings in the Drive Control Program

Technical data 119
 Altitude derating
At altitudes from 1000 to 2000 m (3300 to 6561 ft) above sea level, the derating is 1% for
every 100 m (328 ft). If ambient temperature is below +40 °C (+104 .°F), the derating can
be reduced by 1.5% for every 1 °C reduction in temperature. For a more accurate
derating, use the DriveSize PC tool. A few altitude derating curves are shown below.
 Deratings for special settings in the drive control program
If you change the minimum switching frequency with parameter 97.02 Minimum
switching frequency, calculate the derated output current by multiplying the current given
in the rating table by the derating factor given in this table.
Note: Changing the value of parameter 97.01 Switching frequency reference does not
require derating.
Derating factor 1.00
Derating factor 0.95
Derating factor 0.9
Derating factor 0.85
Derating factor 0.80
Frame size Derating factor (k) for the minimum switching frequencies
1 kHz 2 kHz 4kHz 8 kHz
R10 1 0.92 0.78 0.58
R11 1 0.92 0.78 0.58
1500 m
1000 m
+25 °C +30 °C
+77 °F +86 °F
Ambient temperature
+40 °C
+104 °F
+35 °C
+95 °F
+20 °C
+68 °F
3300 ft
4921 ft
2000 m
6562 ft
2500 m
8202 ft
3000 m
9842 ft
3500 m
11429 ft
4000 m
13123 ft
Installation site altitude
1.00
0.95
0.85
0.90
0.80