... Dry-type Power Transformer,Transformer Control 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 ... :-15-+402.Altitude:<1000m3.Relative humidity:<90%4.Environnment exists with out gas,steam,chemical deposition,dust or dirt that will ...