Power plant, power system, coal and mine, transportation,etc.

S13-M series three-phase oil-immersed distribution transformer is a national science and technology new product, which is developed on the basis of the structure design of the new S9 series products. The leading idea of the design is to meet the reliability of the product, improve the performance of the product, and adjust some loss coefficient and structure according to the actual situation of the new S9 products, so that the design value of the loss is more in line with the actual side value. At the same time, optimization design and reasonable determination of copper and iron ratio are carried out to make the material cost the lowest and the structure reasonable. The core adopts high magnetic conductivity, low loss and high quality and high performance silicon steel sheet, which reduces the no-load loss and no-load current.

The high-voltage winding of the entire series adopts layered structure, and the low-voltage winding of 500KVA and below products is also layered structure (without segmentation and continuous). 630KVA and above products adopt new spiral type for low voltage. The body assembly summarizes the mature experience of the new S9 distribution transformer, and after the body assembly, it becomes a solid integral to ensure that the product meets the requirements of electrical performance and mechanical strength when sudden short circuit occurs.

The full sealed structure of this series of products ensures the isolation of transformer oil and external air, prevents oil aging, improves the reliability of transformer operation, and the oil tank adopts corrugated oil tank with a long hole at the top and bottom of the tank wall. It can promote the circulation of oil in corrugated sheet. This oil tank process is simple, mechanical strength is high, oil flow and heat dissipation capacity are improved, welding effect is good and leakage is not easy.