3.4 Thermal Management
3.4.1 Motor Temperature
The motor temperature depends on the ambient and liquid temperature, as well as on the hydraulic
operation point and the characteristics (viscosity and density) of the liquid. Figure 18 illustrates the
temperature characteristics of the motor depending on these parameters. For higher liquid temperatures, and
hydraulic operating points active cooling is recommended for example with the Air Cooling Module ACM-
4000.1 (see Figure 20) or the Fan Cooling Module FCM-4000.1 (see Figure 19).
Figure 18: Temp. curves for LPM-4000 motor without cooling
Temperature is measured inside of the motor, temp. of housing is significantly below this temperature.
Typical curves measured with pump head LPP-4000.5.
Figure 19: Temperature curves of motor LPM-4000.2 with Fan Cooling Module FCM-4000.1
Temperature is measured inside of the motor, temp. of housing is significantly below this temperature.
Typical curves measured with pump head LPP-4000.5
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