... out the standard1. GB1094.1 ~ 2-1996 power transformer2. GB1094.3, 5-2003 power transformer3. GB/T6451-2008 oil-immersed ... widely used in industry and agriculture, urban and rural power grid.2. High reliability, performance level advanced, economical index is ... and noise.4. Winding new structure, reasonable design oil way, adopt new insulation structure, improve mechanical strength and resistance ...