Investigations of Switching Tests during Transformer Inrush with a 145-kV Vacuum Circuit Breaker
The F-gas regulation released by the EU permits the use of sulphur hexafluoride (SF6) as an insulating and extinguishing gas for high-voltage equipment from January 2028 onwards for voltage levels up to 145 kV and 50 kA. For high-voltage switchgear, vacuum technologies are a possible technology to replace the SF6-based switchgear for voltages onwards 110 kV.