Considerations For Integrated Mounting In Ventilated Motors - WEG MW500 User Manual

Powering up and Start-up
5.2 CONSIDERATIONS FOR INTEGRATED MOUNTING IN VENTILATED
MOTORS
In order to keep the temperature rise of WEG motors within acceptable levels, the following
loadability limits must be attended (observe the motor line with constant flux condition in
Figure 5.2 on page 24). This condition can be adjusted in P0406 where the overload motor
protection was pre adjusted for attend the derating.
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1
24 | MW500
For temperature rise of
thermal class B (80 K)
[f/fn] - frequency (p.u.)
Figure 5.2: Torque derating
For temperature rise of
thermal class F (105 K)