Among industrial gases, sulfur hexafluoride is a colorless, tasteless, non-toxic gas with good insulation. Because of its high insulation strength, excellent arc extinguishing performance, cooling characteristics, incombustibility and thermal stability, it is widely used in power transmission systems. Because of this, we should do a good job in the preliminary inspection.

When the humidity in sulfur hexafluoride gas is high, if an arc occurs in the equipment, the arc decomposition products of sulfur hexafluoride gas will produce many toxic substances, such as SOF2, HF, etc. with the participation of water, which will corrode the internal structural materials of the circuit breaker and threaten the personal safety of maintenance personnel; In addition, when the humidity is high, with the change of temperature, condensation water will be generated on the surface of the insulating parts, causing surface flashover, reducing its insulation strength and threatening the safe operation of the equipment.

The acidity represents or symbolizes the toxicity of sulfur hexafluoride gas to a certain extent, especially when acidic components and water exist at the same time, condensation may occur, which will seriously endanger the safe operation of electrical equipment. Impurities such as air, carbon tetrafluoride and mineral oil will reduce the insulation and arc extinguishing performance. Under the influence of external factors such as high current, high voltage and high temperature, electrical equipment will produce toxic or highly toxic oxygen containing low fluoride in the presence of oxygen and water. These impurities will do great harm to people and corrode metal parts and insulation materials of equipment.

Sulfur containing and low fluoride in high-purity sulfur hexafluoride impurities. Some of them are easily hydrolyzed to form acid or toxic substances, which will damage human health and equipment operation safety.

The content of the article comes from sulfur hexafluoride gas: http://www.feiliergas.com