Update on C4FN mixture 245 kV and 420 kV metal enclosed switchgear

The need for development of high voltage networks over the world, in line with the growth of renewable energies integration and the need for electrification confronts most of the TSO to conduct massive investment in the transmission systems. Recent worldwide regulations, leading to partial or complete SF6 bans in the coming years at different voltage levels, push manufacturers to provide next generation apparatus. Their technical characteristics and ability to fully replace existing SF6 assets is the keystone to reduce the carbon footprint of high voltage grids and allow the required SF6-free transition.