FIELD: electrothermics, in particular, electric-arc steel melting furnace duty control systems. SUBSTANCE: system provides for connection of the electric-arc steel melting furnace at such moments of time, when the maximum load out of the average half hourly total loads of the furnace is the minimum one as compared with any other moments of time of actuation of furnaces. The offered device can be used to control the electric power duty of electric-arc steel melting furnaces at their gang operation, as well as in other branches of national economy for reduction of the total load curve of electric loads with scheduled operating times. EFFECT: enhanced efficiency. 1 dwg
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