1,10kV, 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 ... )Rated LV: 0.4kV,0.415KV,0.38KV4)Phase No. :single or three;5)Rated frequency: ... oil nature, oil cooling 10kV, S9 ,3 phase oil immersion power transformer