FIELD: electrical engineering. SUBSTANCE: stator winding of asynchronous motor is star-connected. Starts of two phases are provided with clamps for connection of power supply source, autotransformer is linked to third phase of power supply source, mobile contact is coupled to start of third phase of stator winding. Common point of star of stator winding and finish of autotransformer winding are connected to zero lead of power supply source. EFFECT: enhanced control over mechanical characteristics. 4 dwg
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