FIELD: voltage and frequency changers for general-purpose squirrel-cage motors. SUBSTANCE: station has adjustable-frequency changer, reversing switches whose quantity depends on number of motors and whose control windings are connected in series with interlocking break contacts, process variable sensor, motors connected to outputs of reversing switches provided with two inputs one being connected to three-phase supply mains and other input, to output of adjustable-frequency changer; it also has microcontroller system provided with input connected to process variable sensor and several outputs of which first one is connected to data input of adjustable-frequency changer and other outputs are connected to control windings of reversing switches. EFFECT: improved reliability and reduced cost of station. 1 dwg
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