This type of product is mainly used in State Grid and Southern Grid projects 1. Low loss, significant energy-saving effect. The no-load loss of three-phase three-dimensional transformers is reduced by 25-45% compared to the national standard, and the no-load current can be reduced by up to 92%; 2. Low noise, the three-phase three-dimensional winding iron core is made by continuously and tightly winding silicon steel sheets through a dedicated iron core winding machine. The iron core has no seams and does not produce noise due to discontinuous magnetic circuits. At the same time, the three-phase magnetic circuit and magnetic flux are completely symmetrical, resulting in a significant reduction in product noise; 3. Strong overload capacity and more stable new energy; 4. The product has a compact structure, occupies a small area, and can effectively reduce investment.