HD Hyundai Electric eyes Europe with greener grid technology

HD Hyundai Electric said Monday it has developed Korea’s first 420-kilovolt circuit breaker that does not use sulfur hexafluoride, positioning the company to tap Europe’s growing market for greener power grid equipment. Sulfur hexafluoride, or SF6, is widely used to insulate high-voltage equipment but is subject to tightening European Union regulations due to its potent greenhouse gas effect. The new circuit breaker instead uses a C4-based insulating gas. HD Hyundai Electric said the alternative