User’s Manual for Advanced Axial Flux Synchronous Motors and Generators
www.emrax.com Version 4.5 / January 2017 44
Figure 40: EMRAX IP65
14. Motor cooling
It is important to enable sufficient cooling of the motor at any time. In every case, the temperature sensor that is mounted in
the controller must be connected to the controller. This sensor protects the motor from overload. In case temperature is too
high and not stable the controller drives the motor with lower current until the temperature becomes stable under the limit. The
standard temperature sensor mounted into the motor is KTY 81-210. Other types can be mounted (e.g. PT1000) if the customer
consults with the EMRAX Company in advance. EMRAX motors can be air cooled (IP21), liquid cooled (IP65) or combined cooled
(IP21).
Figure 41: Motor cooling options
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