TOKYO, Dec 9, 2024--- Hitachi, Ltd. announced today that it received an order for five units of Hitachi Energy's sulfur hexafluoride- free EconiQ 300 kilovolt circuit-breaker from Chubu Electric ...

Upon completion in 2022, the g 3 circuit-breaker is expected to be the first SF 6-free 420 kV gas-insulated substation circuit-breaker in the world. A circuit-breaker is protective equipment used to ...