SF6 Byproducts in Simulated Electric Equipment of Overheating Faults in High Humidity

Abstract:

The decomposition of sulfur hexafluoride (SF6) in overheated electric equipment at different temperature in high humidity was simulated in the study. SF6 is very stable and not significantly decomposed at 200 °C, 250 °C and 300 °C. SF6 is significantly decomposed at 350 °C. SF6 is more easily to be decomposed and decomposed more rapidly at higher temperature. The concentrations of SF6 byproducts are much higher at higher temperature. SF6 will be decomposed to format HF. The concentration of HF will decrease when its concentration increases up to a certain concentration. It may be because that HF was strongly corrosive and its corrosion to inner equipment made the concentration of HF decreasing.

• Periodical: Applied Mechanics and Materials (Volumes 672-674)
• Pages: 746-752
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.672-674.746
• Online since: October 2014
• Authors: Yu Wang*, Li Li, Yong Yan Zhou
• Keywords: Byproducts, Hydrofluoric Acid, Overheating Faults, Sulfur Dioxide, Sulfur Hexafluoride, Sulfureted Hydrogen

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