FIELD: electric engineering. SUBSTANCE: method involves measuring arc current, alternating height position of electrodes in furnace hearth (according to current), measuring reactance of reactor (saturation reactor is used), variation of its reactivity using modulation of continuous polarization current. Corresponding device has unit for regulation of arc length , furnace power supply, transformer, device for regulation of arc current which has at least one saturation reactor. EFFECT: increased functional capabilities. 4 cl, 4 dwg
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