WEG MW500 User Manual - page 32
26 | MW500
Powering up and Start-up
- English -
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
). This condition can be adjusted in P0406 where the overload
motor protection was pre adjusted for attend the derating.
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
[f/fn] - Frequency (p.u.)
[T
R
] - T
or
q
ue r
ed
uc
tio
n (
p.
u.
)
for temperature rise of
thermal class F (105 K)
for temperature rise of
thermal class B (80 K)
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
Figure 5.2: Torque derating