Derating; Ambient Temperature Derating; Altitude Derating; Low Noise Control Mode Derating - ABB ACS880-07 Hardware Manual

178 Technical data
I Maximum output current. Available for 10 seconds at start, then as long as allowed by drive
max
temperature.
I Continuous rms output current allowing 50% overload for 1 minute every 5 minutes.
Hd
* Continuous rms output current allowing 30% overload for 1 minute every 5 minutes.
** Continuous rms output current allowing 25% overload for 1 minute every 5 minutes.
*** Continuous rms output current allowing 40% overload for 1 minute every 5 minutes.
P Typical motor power in heavy-duty use
Hd
Note 1: The ratings apply at an ambient temperature of 40 °C (104 °F).
Note 2: To achieve the rated motor power given in the table, the rated current of the drive must be higher
than or equal to the rated motor current.
The DriveSize dimensioning tool available from ABB is recommended for selecting the drive, motor and gear
combination.

Derating



Ambient temperature derating

In the temperature range +40...50 °C (+104...122 °F), the rated output current is derated
by 1% for every added 1 °C (1.8 °F). The output current can be calculated by multiplying
the current given in the rating table by the derating factor (k):
k
1.00
0.90
0.80
+40 °C
+104 °F

Altitude derating

At altitudes from 1000 to 4000 m (3281 to 13123 ft) above sea level, the derating is 1% for
every 100 m (328 ft). For a more accurate derating, use the DriveSize PC tool.

Low noise control mode derating

When low noise drive control mode is used, the motor and braking powers are derated.
Contact ABB for more information.
+50 °C T
+122 °F