... ) Large-screen LCD,user-friendly man-machine interfae4) Three-phase regulation,no contact,no abrasion,no spark and maintenance ... output commands to control the controllable module(SCR) of fast switching, the same frequency, phase locked through a transformer, since ... carbon brush, no contact, no mechanical, no spark, three-phase distributionResponse time 0.03sPowerFrom 10K watt to 2500K wattThree ...