Return of Experience from Installation, Commissioning and Operation of the World's First Modern SF6-free 420 kV Dead Tank Circuit Breaker
SF6-free high voltage equipment is one key technology to lower the environmental impact of new substations. Available applications and covered ratings are constantly increasing. In 2022, the world’s first modern SF6 free-circuit breaker became commercially available, with the first energization in the grid in 2023, which was a dead tank circuit breaker (DTB) installation in the