At present, SF6 (Sulphur Fluro hexafluoride) gas is widely used in high voltage transmission and distribution equipments for switching/arc quenching and for insulation. SF6 gas is anthropogenic and a major greenhouse gas having global warming potential (GWP) 25,200 times that of Carbon dioxide (CO2).
India committed in COP26 to contribute for climate change by making development choices along low carbon pathways towards net-zero by 2070. Technologies are advancing in high voltage switchgears to replace SF6 gas, but with zero carbon emissions.
This paper presents the high voltage switchgear based on F-gas free technologies using Clean Air for insulation and vacuum interrupter for Switching/Arc-quenching. At present, such technologies are currently available and can effectively support and contribute to the achievement of carbon neutrality goals.
F-gas, Greenhouse gas (GHG), Global warming potential (GWP), Gas insulated switchgear (GIS), Circuit Breaker (CB), Clean Air, Vacuum interruption
