LVB-220 explosion-proof oil-immersed vertical current transformer passed 

the internal arc fault test of State Grid Corporation of China for the first batch in China

On May 13, 2022, the LVB-220 explosion-proof oil-immersed inverted current transformer developed by Shandong Taikai Transformer Co., Ltd. successfully passed the internal arc fault test organized by the State Grid Equipment Department and China Electric Power Research Institute in Xi'an High Voltage Electrical Apparatus Research Institute. Experts from China Electric Power Research Institute, Anhui Electric Power Research Institute, Shaanxi Electric Power Research Institute, West High Institute and other units participated in the test process, and the participating experts fully affirmed and highly recognized the achievements of our company's products.

LVB-220 explosion-proof products are a new generation of high-reliability explosion-proof oil-immersed inverted current transformer independently developed by our company, and the successful research and development of the product has filled the technical gap of domestic oil-immersed transformer in the field of explosion-proof. The company's technical R&D team simulates the internal expansion shape and pressure change of the product under the short-circuit fault state by using advanced dynamic simulation technology; The creative application of oil-immersed explosion-proof device has realized the explosion-proof technology of oil conservator/expander, and has made a major breakthrough in the explosion-proof performance of the product. The level of arc fault current/duration of the product reaches 20kA/300ms, and the test results meet the requirements of IEC61869-1 and GB/T20840.1 internal arc fault protection level II., which promotes the further innovation of the technical level of the domestic transformer industry.

The successful development of the internal arc fault test of LVB-220 explosion-proof products is the embodiment of the continuous innovation and enterprising achievements of the R&D team of Taikai transformer and the research and development of a new generation of high-reliability explosion-proof transformer. It is the successful practice of the special action to improve the operational reliability of oil-immersed current transformers of the State Grid Corporation of China; It demonstrates the consistent product quality strength of the "Taikai brand" and provides a great boost for the construction of "strong smart grid".