As the power system continues to evolve, SF₆Electrical equipment applications are becoming more widespread, especially GIS integrated electrical equipment, which is widely used due to its significant reduction in the occupied area and space volume of electrical equipment, as well as its ease of installation, reliable operation, and convenient maintenance.

Pure SF₆The gas is colorless, odorless, and non-toxic, and it is not flammable. Its density is five times that of air. When contained in a SF₆In the event of a leak in the equipment's distribution room, such as GIS, SF₆Gases can accumulate to a certain concentration in low-lying areas, and if personnel enter the enclosed space, it can lead to brain oxygen deficiency, even rapid asphyxiation, and other serious personal accidents. Additionally, under the influence of electric arcs, partial discharges, and high temperatures, SF₆Gases may produce such as SF₄、S₂F₂、SOF₂Highly toxic decomposition products, some of which produce corrosive electrolytes when mixed with water, pose not only a severe threat to human health but also to the normal operation of electrical equipment.