The product conforms to the national standard GB1094 "power transformer" and GB/T6451 "three-phase oil-immersed power transformer technical parameters and requirements. This product in the material, the craft, the structure has adopted a series of significant reforms, causes the product electrical performance to achieve the international 90 time similar product advanced level. With the characteristics of high efficiency and low loss, it can save a lot of electricity consumption and operating costs, and has remarkable social benefits. It is a new product promoted by the state. It is also one of the most popular products for users.