GIS filled with Sulfur Hexafluoride (SF6) has been used as a core component in sub-stations, to break excessive fault currents in case of failure to protect electrical equip-ment. SF6 is a greenhouse gas with significant global warming potential.
The contract for the development of the 170 kV eco-friendly GIS was signed between Siemens AG and Iljin Electric at the Plaza Hotel in Seoul on June 29, 2018.
With the signing of this contract, Siemens AG and Iljin Electric will jointly develop the world’s first eco-friendly 170kV GIS based on high-tech VI technology and clean-air insulation.
By applying these technologies, the emission of any greenhouse gas in GIS will be completely avoided.Siemens has already unveiled the industry’s first 145kV GIS with VI and clean-air ap-plication at the CIGRE 2016 (International Council on Large Electric Systems) in Paris, overcoming technical limitations that the industry had been facing.