... 10kV, S9 ,3 phase oil immersion power transformer 2,high efficiency,low loss ... 3,Low losses and Low Noise Describtation of the product:The three-phase oil-immersed distributing transformer ... JB/T 3837-1998technical data:1) Rated Power: 30~2500kVA2)Rated HV: 6KV,6.3KV ... ;10)Cooling type: oil nature, oil cooling 10kV, S9 ,3 phase oil immersion power transformer