Features of thermistor protection of three-phase asynchronous motors with short-circuit rotor with voltage up to 0.66 kV

The article analyzes the features of thermistor protection against overheating of three-phase asynchronous motors with a squirrel-cage rotor with a voltage of up to 0.66 kV. A comparative analysis of different types and types of thermistors is carried out, in particular their design features, operating principles and characteristics, which provides effective protection of motor windings from critical overheating. The advantages and disadvantages of different types of thermistor protection of asynchronous motors are determined, which allows you to reasonably choose the optimal protection option depending on the operating conditions and requirements for the reliability of electric motors in accordance with modern standards.