FIELD: hydraulic turbine equipment including large hydraulic turbines and reversible machines for hydroelectric and pumped storage plants. SUBSTANCE: device has main and additional servomotors, delivery and drain lines, hydraulic distributor with reversing distributing channels communicating with spaces of main servomotor, two-position control valve coupled with additional servomotor spaces, control valve change-over facilities, and command unit with power supply for device starting and hydraulic distributor change-over. Additional servomotor control valve has protruding rod; device starting command unit has interlocking circuit in power system incorporating electric contact device placed at end of control-valve rod on additional servomotor for engaging it. EFFECT: improved design. 1 dwg
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