î—¥ On June 25, the first 90,000 kVA/35kV electric arc furnace transformer with the largest capacity in China passed the factory test in Xi'an Xidian Transformer Co., Ltd., and all technical indicators have reached the international advanced level. The successful development of this product has broken the situation that such large-capacity special transformer products in China have completely relied on foreign original imports. It is of great significance not only for the localization of such large-capacity special transformer products in China, but also for the technical transformation of China's metallurgical industry. Providing advanced localized equipment has laid a solid foundation and further consolidated Xichang's industry leading position in the field of special transformer manufacturing.
The 90,000 kVA/35kV electric arc furnace transformer is the key equipment for the 100t electric arc furnace project of Henan Wuyang Iron and Steel Co., Ltd. Before that, the largest electric furnace in China was only 40,000 kVA. Due to the low voltage and large current of the large-capacity electric furnace transformer, the technical and manufacturing capacity requirements are very high. In the past, such products used in China rely entirely on the original imported from Siemens and ABB. Xichang Company, which has been pursuing independent innovation, has designed and manufactured the product itself with industry-leading research and development capabilities. In the design and manufacturing process, according to the characteristics of the electric arc furnace transformer and special working conditions, Xichang Company fully considers the overload capacity of the transformer. Through special treatment of the structure, the transformer has higher resistance to short circuit and can withstand the ability. The operating overvoltage, working short-circuit shock and overload phenomenon often occur in the smelting process of the electric arc furnace, so that the performance of the products have reached the international advanced level.
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