29 Mar GE Unveils World’s 1st 420 kV SF6-free g3 Circuit-Breaker for Gas-Insulated Substations
GE’s g³ 420 kV gas-insulated substation (GIS) circuit-breaker prototype demonstrates that g³ technology can be used at Europe’s highest voltage level, as well as other global voltage levels The use of g3 switching and insulation gas to replace SF6,...