... , phase sequence protection 3) MCU control, no brush, no wea ST Step-down transformer Specifications Specifications :1.Input voltage:rated voltage ... Control Transformer, Transformer,BKC,JBKDG & SGPower Transformer,Dry type transformer,Three-phase Dry-type Power Transformer,Transformer,SG,DG DG and SG ... )3.Efficiency:≥95%4.Waveform distortion:no additional waveform distortion ST Step-down transformer