Weight of oil-immersed transformer core

GNEE Steel Oil Type Transformers

According to oil-immersed transformer manufacturers, the weight of the iron core has an advantage among all components of oil-immersed transformers in China. The iron core of annular oil-immersed transformers is made of cold-rolled silicon steel sheets (sheet thickness is generally less than 0.35mm), which is seamlessly rolled. This makes its core performance better than the traditional laminated core. The coils of the toroidal oil-immersed transformer are evenly wound around the core. The direction of the magnetic lines generated by the coil almost completely coincides with the magnetic circuit of the core. Compared with the laminated type, the excitation energy and core loss will be reduced by 25%, which brings about the following describe a series of advantages.

Oil immersed type filled transformer

Accounting for about 60% of the total weight of ordinary oil-immersed transformers, the core material is mainly silicon steel sheets. As early as the 1960s, developed countries had eliminated hot-rolled silicon steel because the loss of hot-rolled silicon steel was too great. Our country also explicitly phased out hot-rolled silicon steel during the Tenth Five-Year Plan period. However, because the output of cold-rolled silicon steel cannot meet demand, hot-rolled silicon steel is still used in some mechanical and electrical products. my country's S13 oil-immersed transformer products are still mostly traditional products produced for decades, and still use silicon steel sheets, ferrite, enameled wire, plastic skeleton, etc. as the main raw materials and components. In order to support new electronic products, R-type iron core technology has been introduced in recent years and R-type oil-immersed transformers have been developed, further improving the quality level of S13 oil-immersed transformers. As market competition becomes increasingly fierce, in order to reduce costs, the production scale of oil-immersed transformers will be further promoted to form economies of scale to adapt to more intense market competition.