In addition to the typical deep slot and double squirrel cage rotor, in order to improve the starting problem of squirrel cage motors, bottle-shaped slots with large bellies and small mouths, trapezoidal slots and "convex" slots are also available.

 

Above we talked about the design comparison of motor slots, but from the perspective of manufacturing process, the theoretical advantages may not be realized in the process. For motor products, we have experienced the process of unified design. Especially at that time, everyone was very cautious about the changes in the unified design, but under such conditions, the final quality level of motors with the same scheme was uneven. Similarly, the slot shape improvement measures to improve the starting performance of the motor must match the process level and equipment level of the manufacturer.