110kV class three-phase oil-immersed on-load voltage regulating power transformer has adopted a series of major reforms in materials, processes and structures. It has the characteristics of small size, light weight, high efficiency, low loss, low voice and reliable operation. It can reduce a lot of power grid losses and operating costs, and has significant economic benefits. It is suitable for power plants, substations, large factories and mining enterprises, etc. This product meets the national standards: GB1094.1-2013 “Power Transformer Part 1 General Provisions”, GB1094.2-2013 “Power Transformer Part 2 Temperature Rise”, GB1094.3-2003 “Power Transformer Part 3 Insulation Level, Insulation Test and External Insulation Air Gap”, GB1094.5-2003 “Power Transformer Part 5 Ability to Bear Short Circuit”, GB/T6451-2015 “Three-phase oil-immersed power transformer Technical Parameters and Requirements”.