electrical rss news
Siemens and Iljin Electric develop the first SF6-free 170 kV gas-insulated switchgear with vacuum switching technology
• Vacuum interrupter unit and purified air replace SF6 as the quenching/insulating medium
• The world's first gas-insulated switchgear without SF6 for 170 kV / 50 kA
Siemens and Iljin Electric, a Korean manufacturer of electrical systems and gas-insulated switchgear (GIS), have signed an agreement to develop an SF6-free GIS for the 170 kilovolt (kV) voltage level. The technology has already been developed by Siemens for applications up to 145 kV. This GIS uses treated air, known as "Clean Air", instead of sulfur hexafluoride (SF6) as the insulating medium. "This makes the GIS environmentally friendly and does not require any special precautions to be taken during manufacturing, operation, and recycling. The GIS can also be used at extreme temperatures, and there is no need to report the quantities of fluorine gas used.", explains Ralf Christian, CEO of the Siemens Division Energy Management.Original Article