koreatimes.co.kr

HD Hyundai Electric develops Korea’s first 420kV SF6-free circuit breaker

HD Hyundai Electric logoHD Hyundai Electric
Sig3.19Sen+5.26Env+6.36Soc+1.22Gov+0.73

HD Hyundai Electric completed development of Korea’s first 420kV-class SF6-free high-voltage circuit breaker, using a C4-based gas mixture to replace sulfur hexafluoride. Designed for ultra-high-voltage transmission and stable long-term performance, it positions the firm for Europe’s growing ultra-high-voltage grid market, with more SF6-free classes planned within three years.

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