The S11/S13/S20/S22 models integrate new materials and new technologies. Through a combination of independent innovation and technology introduction, they have optimized and innovatively designed the core and coil structure, successfully achieving the goal of reducing no-load losses and noise, providing a new solution for improving the energy efficiency of power equipment. This transformer performs exceptionally well in noise control. Compared with the current national standard JB/T10088 - 2016, the noise level has been reduced by an average of 20%, enabling a quieter environment for equipment operation. The 110kV oil-immersed energy-saving transformer produced by our company features low loss, low noise, low temperature rise, high reliability, and the advantages of no core lifting and no leakage. Its various performance indicators reach the advanced level of similar domestic products. It can reduce power grid losses and operating costs, presenting significant economic benefits. It is suitable for scenarios such as power plants, substations, new energy wind power and photovoltaic power stations, large industrial and mining enterprises, and petrochemical enterprises. The electrical strength, mechanical strength, and heat dissipation capacity of the product have been significantly improved. It adopts a three-phase double-winding oil-immersed, self-cooling, no-exciting voltage regulation, fully sealed structure, effectively enhancing the stability and protection performance of the equipment. The overall layout is compact, the metal casing is sturdy, and it is equipped with a fine metal protective net and ventilation holes, which not only ensure safety but also facilitate air circulation for auxiliary cooling. The core components include the transformer body, oil tank, heat exchanger, high and low voltage insulation bushings, oil level gauge, pressure release valve, temperature controller, oil reservoir (with a general capacity of ≥ 630 kVA, it needs to be equipped), gas relay, desiccant breather, etc. Product type and core principle: This product is an oil-filled sealed type. Its working principle is the same as that of sealed power transformers. It uses amorphous alloy, whose basic elements include iron, nickel, cobalt, silicon, boron, carbon, etc., and belongs to a homogeneous soft magnetic material. It has characteristics such as low magnetization power and no structural defects that hinder the movement of domain walls, which helps to optimize the performance of the transformer.