Technical data

MHD Sychronous motors Notes Application 16-1
DOK-MOTOR*-MHD********-PR05-EN-P
16 Notes Application
16.1 Conditions for use
Setup Height and Ambient Temperature
The performance data specified for the motors apply in the following
conditions:
Ambient temperature of 0 ºC up to +45 ºC
Setup heights of 0 m up to 1000 m above MSL.
If you intend to use motors above these ranges, you must take the
“utilization factors” into consideration. This reduces the performance data.
t
A
[°C]
1000 30002000
0,6
0,8
1
40 45 50 55
0
f
H
h [m]
0,6
0,8
1
0,4
0,4
f
T
T100
T60
1000 3000
1
2
f
T
t
A
[°C]
0,6
0,8
1
40 45 50 55
0
f
H
0,4
0,6
0,8
1
0,4
ambientMHD.fh10
(1): Utilization depending on the ambient temperature
(2): Utilization depending on the setup elevation
f
T: Temperature utilization factor
t
A: Ambient temperature in degrees Celsius
∆T60 / ∆T100: Mode of operation
fH: Height utilization factor
h: Setup elevation in meters
Fig. 16-1: MHD derating (utilization factors)
If either the ambient temperature or the setup height exceeds the
nominal data:
1. Multiply the torque data specified in the selection data by the
utilization factor.
2. Ensure that the reduced torque data are not exceeded by your
application.
If both the ambient temperature and the setup height are exceeding the
nominal data:
1. Multiply the determined utilization factors f
T and fH by each other.
2. Multiply the value obtained by the motor torque data specified in the
selection data.
3. Ensure that the reduced torque data are not exceeded by your
application.
Nominal data
Exceeding the nominal data
Derating curves