TAM 00699
32
DSD2 045
– 132
04/2018
Three-phase synchronous motor
English
18 °C. Because these are limiting values on practical side a coolant temperature greater than 18 °C
should be used. If this minimum coolant temperature will be under run the two- point controller of
Baumüller drive must be used to avoid condensation (see
figure 13
on next page).
Note:
For standstill of motor for longer time the cooling must be stopped.(to avoid condensation).
If ambient temperatures of < 3 °C may occur during a longer motor standstill, coolant should be
discharged as a precaution (to prevent frost damage).
Figure 13: Flow chart coolant temperatur
Start
Definition rel.
humidity
Definition of min.
coolant temperature
(Section 1.3.2)
T
water
≥ T
ambience
-5K
T
water
> T
min.water
(Section 1.3.2)
Derating
referred to
section 1.2.2
No
restrictions
2-point controller
T
on
= 70 °C
T
off
= 50 °C
T
water
≤ 25 °C
T
water
≤ 25 °C
No
restrictions
T
water
≤ 25 °C
No
restrictions
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
