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P
Typical power in light-overload use
Ld
I
Continuous rms current allowing 50% overload for 1 minute every 5 minutes
Hd
P
Typical power in heavy-duty use
Hd
Note 1: The ratings apply at an ambient air temperature of 45 °C (113 °F) and a coolant temperature of
40 °C (104 °F).
Note 2: To achieve the rated power given in the table, the rated current must be higher than or equal to
the rated current. For dimensioning, use DriveSize dimensioning tool available from ABB.
Derating
￭
Surrounding air temperature derating
In the temperature range +45...55 °C (+113...131 °F), the rated output current is derated
by 0.5 percentage points 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
0.95
0.90
+45 °C
+113 °F
Altitude derating
At altitudes more than 1000 m (3281 ft) above sea level, the output current derating
is 1 percentage point for every added 100 m (328 ft). For example, the derating factor
for 1500 m (4921 ft) is 0.95. The maximum permitted installation altitude is given in
the technical data.
For a more accurate derating, use the DriveSize PC tool.
Coolant temperature derating
See section
Temperature limits (page
Antifreeze content derating
See section
Temperature limits (page
Switching frequency derating
Switching frequencies other than default can require output current derating. Contact
ABB for more information.
T
+55 °C
+131 °F
156).
156).
Technical data 131
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