Boundary conditions
You are only allowed to use the thermal motor protection without temperature sensor if the following conditions are met:
Framework conditions | |
|---|---|
General | Follow the instructions of the documentation (operating instructions and product manual), particularly the "Project Planning for the Drive Unit" and "Technical data" chapters. |
Type of cooling | Natural cooling |
Ambient temperature | -20 °C to +40 °C |
Thermal class of motor winding | 155 (F), 180 (H) |
Installation altitude | h ≤ 1000 m |
You must not use the thermal motor protection without temperature sensor with the following motors:
- Motors with forced cooling fan
- Motors without fan
- Non-ventilated motors
- Third-party motors
For motors with speed sensor, SEW-EURODRIVE recommends using a temperature sensor.
