The SF series new energy photovoltaic and energy storage split type transformer is characterized by a large rated capacity and low voltage split into two capacities, which can serve two box transformers at the same time. The two box transformers can be used simultaneously or separately, and users can switch flexibly. The main body is an oil immersed self cooling non excitation pressure regulating fully sealed structure, mainly composed of the transformer body, oil tank, radiator, high and low voltage side insulation sleeves, oil level gauge, pressure release valve, temperature control meter, gas relay, moisture absorber, etc. It is an important core component of the Hua type box transformer. This product has a wide capacity range and voltage levels of 40.5kV and below.