... 1,10kV, S9 ,3 phase oil immersion power transformer 2,high efficiency,low loss 3,Low losses and ... of the product:The three-phase oil-immersed distributing transformer applies new type insulating structure and makes short-circuit ... accordance to client needs;8)Tapping voltage regulation type: off-load or on-load;9)Tapping range: +/-2*2.5% / 5% ... cooling 10kV, S9 ,3 phase oil immersion power transformer