Thyristor crane panels for control of an asynchronous electric motor with a wound rotor (f. R.).

The most popular asynchronous electric motors with a phase rotor (thyristor asynchronous electric drive) have found on cranes. They have been widely distributed from Soviet times to the present day. This type of engine is suitable not only for reconstruction, but also for new hoisting crane equipment. Motors with a wound rotor differ from electric motors with a squirrel-cage rotor in a lower starting current. In addition, a wound rotor motor is characterized by an approximately constant speed and a large initial torque during overloads.

Electric motor control with f. R. lifting mechanism