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China's High Voltage Transformer Manufacturing History
Apr 04, 2018

With the progress of socialist economic construction, China’s electric power industry has undergone rapid development and has achieved rapid development. The power transmission capacity of the power system continues to expand, and long-distance transmission increases rapidly. The voltage level of the power grid is rapidly increased, providing high-voltage electrical appliances, including transformer manufacturing. A vast market, and promote the rapid development of China's high-voltage transformer manufacturing.

The development of high-voltage mutual inductor manufacturing in China has experienced the prevention and control from the founding of the country, the reform of the 1960s, and has since been designed, gradually improved, and improved the introduction, digestion, research and development, and development to meet the increasing needs of the Chinese market. The development process.

   In the early 1950s, China only produced oil-immersed high-voltage transformers, which were basically modeled after the Soviet Union. Products from the appearance, structure, and even technical parameters are exactly the same. At that time, there were very few transformers in the country. Most of them were transformers and switchgears. There were not many kinds of transformers and the specifications were not enough to meet the needs of users. Knowing that in the late 1950s, the Shenyang Transformer Factory had trial-produced Soviet-type 220 kv electromagnetic voltage transformers and 220 kv current transformers in 1956 and 1958, which ended the history that China could not manufacture ultra-high voltage transformers by itself.

   In the early 60s of the 20th century, China’s transformer manufacturers gradually increased, and the transformer industry began to take the path of self-designed entrepreneurship. In order to adapt to China’s national conditions, promote technological progress, and improve product levels, many efforts have been made, such as self-designed epoxy in China. The resin casting transformers, Shenyang Transformer Plant and Shanghai Huatong Switch Plant were successfully trial-produced, achieving the purpose of small size and light weight. The 35--220kv oil-impregnated paper insulation transformer product was modified to form a domestic product line. In the 1970s, through research and development, the Shenyang Transformer Factory successively completed the trial tasks of the 330kv and 550kv current transformers required by China's key projects in 1972 and 1979.

At the same time, the development of capacitive voltage transformers in China is very rapid. China's production of such transformers was first implemented in 1963. Xi'an Power Capacitor Factory was first developed and began to produce 110--220 kV capacitive voltage transformers. In 1970 and 1980, trial production of 330kv and 550kv capacitive voltage transformers was completed. Capacitor voltage transformer is currently the only product in the domestic number of power transmission and transformation equipment that has no introduction technology and no introduction of key production equipment.

 In the 1980s, in order to improve product design and manufacturing technology, improve the reliability of transformers, and speed up the development of transformers, China's transformer industry has carried out product quality rectification, and the two products have begun to be joint and firm. At the same time, the advanced technologies and manufacturing technologies of developed countries are introduced and gradually brought into line with international standards. The industry equivalent adopts the IEC standard, and the company has passed the iso90000 series certification. The product has increased the technical content and manufacturing technology level, and shortened the production level with the advanced level in the developed countries. From the 1980s to the 1990s, the manufacture of transformers in China has made considerable progress.


Add: No.38 South Taoyuan Road, Yaozhuang Town,Jiashan County, Jiaxing City, Zhejiang Province, China
Contact person: Elva Zhuang&Sunny Ni
Tel:+86-573-84775555
Fax:+86-573-84776699
Phone:+86-13732570078
E-mail:
sales9@great-relay.com
       sunny.ni@great-relay.com