Analysis of behaviour of an emission-free 420 kV live-tank vacuum circuit-breaker
Today, SF6 is the most frequently used arc-quenching and insulating gas in HV equipment in distribution and transmission systems. However, SF6 is the one of the strongest greenhouse gases with a global warming potential of about 25,200 compared to CO2 and it can persist in the atmosphere for over 1,000 years. Even with leakage rates below 0.1% per year in modern