Overload protection of electric motors in crusher drives ...
· The crusher is driven by 4 asynchronous motors: 2 motors each with a power of 55 kW for coal cutting and 2 for moving the crusher forward and backward with a power of 11 and kW respectively. Loads acting on the cutter motors and temperature effects are analyzed. Efficiency of systems for protection against overheating used on the cutter is insufficient. Design of an original .