Switching of Reactive Loads with High Voltage Vacuum Circuit Breaker

The number of SF6‑free circuit breakers has significantly increased in recent years, driven by the demand to replace SF6. Vacuum circuit breakers are the preferred switching technology in medium voltage systems. Vacuum circuit breakers can handle all relevant load conditions given proper understanding of breaker – load interaction and adequate overvoltage protection. In high‑voltage transmission networks, they have shown superior making and breaking performance compared to other circuit breaker technologies, especially for standard switching duties.