1,10kV, S9 ,3 phase oil immersion power transformer 2,high efficiency,low loss 3,Low losses ... of the product:The three-phase oil-immersed distributing transformer applies new type insulating structure and makes short-circuit ... iron core is made of high-quality cold-rolled silicon-steel plate.High-voltage winding group is made up ... nature, oil cooling 10kV, S9 ,3 phase oil immersion power transformer