Sulfur hexafluoride gas is a colorless,tasteless,non-toxic,with good insulation gas.Sulfur hexafluoride equipment is widely used in power transmission systems due to its high insulation strength,excellent arc extinguishing performance,cooling characteristics,nonflammability and thermal stability.Sulfur hexafluoride,however,is a greenhouse gas that could contribute to global warming.

　　Sulfur hexafluoride electrical equipment has been widely used in substations since 1993.After 10 years of use,the equipment will be overhauled.The traditional way of maintenance is to discharge sulfur hexafluoride gas directly into the atmosphere and pollute the environment.

　　As a gas for industrial production,it is an excellent insulating gas for power equipment.But as one of six greenhouse gases,sulfur hexafluoride gas is calculated to be 23,900 times more damaging to the ozone layer than carbon dioxide,and sulfur hexafluoride gas in the atmosphere can last up to 3,400 years,which can cause long-term damage to the ozone layer.

　　With the promotion of new technology and the application of new equipment and new materials,the equipment produced by sulfur hexafluoride manufacturers has been widely used in the power system for its advantages of safety and reliability,easy maintenance and long service life,and plays an important role in the safe,economic and stable operation of the power system.