Special temperature

If the motor must stay at low temperature without running, a resistor can be included into the motor. It must be permanently fed and so maintains a minimum temperature.

If environmental temperature is high, the motor must be calculated in order to lower the heating.
For example if your environmental temperature is 80C, your maximum winding temperature 130C, the motor may only heat up 50C (delta-T).
Do not forget to account non nominal parameters as number of starts, brakes, etc.
See also water cooled motors.

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