TBEA Hengyang Transformer Co., Ltd., which has independently developed 500kV class world's largest capacity 1000MVA/500kV three-phase high-oil air-cooled auto-coupling field-assembled transformer, passed all factory tests and type tests at one time, and all performance indicators are better than Technology Agreement. Experts from the State Grid Power Research Institute and the Shenyang Transformer Research Institute unanimously agreed that the transformer's technical level and quality control capability have reached the world's leading level.

The on-site assembled transformer was developed for the limited conditions of large-scale transformer transportation caused by the ups and downs of some local and foreign projects, high altitude differences, and numerous bridges. Compared with ordinary transformers, the assembled transformer can save investment costs, has the advantages of compact body, small transport weight, low transportation cost, small footprint, simple operation and maintenance, etc. It is especially suitable for China's southwest water conservancy resources are rich but subject to transport conditions or The power plants or substations with limited land area effectively solve the power development needs in traffic-constrained areas.

The product passed the factory test and type test is a field assembled transformer with a capacity of 1,000,000 kVA researched and developed by Sichuan Transformer Co., Ltd. for the Panzhihua substation of Sichuan Electric Power Company. It is also the largest homemade capacity, highest voltage level and transportation conditions to date. The field assembled transformer with the most demanding, complicated structure and the most difficult assembly.

In recent years, the company has successfully developed a series of new products representing high reliability, high-tech content, energy-saving and environmental protection, and independent intellectual property rights in the transformer industry in China through independent innovation. The output value of new products accounts for more than 90% of the total annual output value of the company. . The company not only developed a number of on-site assembled transformers for substations such as Sichuan Seirgu and Yunnan Yongfeng, but also exported to Tajikistan and West Asia.

The transformer solves the technical problems of disassembly of the coil assembly, on-site set short-circuit resistance and electromagnetic energy for assembly, on-site drying and other technical problems, as well as the world's problems that large-scale transformers cannot be transported to remote mountainous regions. It has completely broken the long-term foreign-invested enterprises on China's large-scale field assembly. The monopoly of transformer technology is a major breakthrough in China’s domestic autonomy strategy for ultra-high voltage and large-capacity field assembled transformers.