Mechanical characteristics of the motor, start, braking, speed and control performance should meet the requirements of the mechanical properties and production process, the impact the motor course of their work on the quality of power supply (such as voltage fluctuations, Xie wave interference), should be within the limits of;

     Cooling method according to a predetermined operating system, Kiev circumstances as determined by the motor power, the temperature rise of the motor should be limited within the range;

     According to the environmental conditions, operating conditions, the installation method, the transmission mode, the selected motor structure, installation PROTECTION form, to ensure that the motor work reliably;

     Considering an investment in a few operating costs, the economy of the entire drive system, energy saving, reasonable, reliable and safety.