This type of product is mainly used in various fields such as power plants, substations, petrochemicals, metallurgy, mining, municipal engineering, transportation, schools, etc. 1. The iron core material adopts high-grade oriented silicon steel sheets; Five step joint structure, with iron core burrs below 0.01mm, and noise much lower than the national standard; 2. The production process of the coil and body adopts a "kit style" technology, strictly controlling the consistency of the magnetic centerline of the coil, ensuring good ampere turn balance, and strong resistance to short circuits; 3. The winding and body insulation adopt a new structure developed by our company, which improves electrical performance, reduces no-load and load losses, and enhances product conversion efficiency.