... 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 resistances strong.The iron core is made of high-quality cold-rolled silicon-steel ... , oil cooling 10kV, S9 ,3 phase oil immersion power transformer