Development of gas insulated switch

In recent years, gas insulated switchgear has been rapidly popularized and applied in China, especially with the construction and transformation of urban power grid, rail transit and large industrial and mining enterprises in China, new and higher requirements have been put forward for miniaturization, intelligence, maintenance-free and full working conditions, and the demand for high-performance and high-quality inflatable cabinets in China has become increasingly strong. Due to the limitation of environmental conditions (such as high altitude, humidity, salt fog, pollution, corrosion, etc. ), the traditional air-insulated switchgear can no longer meet the requirements of users in metallurgy, petrochemical, mining and coastal areas. In urban subway and light rail, high-rise buildings, large enterprises and other occasions, due to factors such as floor space and space constraints, 35kV gas insulated switchgear will also be selected. 35kVC-GIS products have broad application prospects. At present, most of the domestic products are imported. However, due to the difference of voltage level and neutral grounding mode in 35kV power system, foreign products can not fully meet the needs of domestic users, so it is necessary to speed up the research and development and manufacture of domestic C-GIS products.