... Transformer(BK,SBK),power transformer,electric transformer,JBK Machine Tool Control Transformer, Transformer,BKC,JBKDG & SGPower Transformer,Dry type transformer,Three-phase Dry-type Power Transformer,Transformer,SG,DG DG and SG series Dry type ... be applied to such power transmission and distribution places like underground railway ... 9.Electric strength: no breakdown or flashover phenomenon under power ...