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Published on Aug 24, 2015
ABB has achieved a significant breakthrough in gas-insulated switchgear (GIS) technology by commissioning the world’s first high- and medium-voltage GIS installation with a new eco-efficient gas mixture as an alternative to the widely used SF₆ gas. The 24 kV and 170 kV GIS pilot bays are installed in a Zurich substation for leading Swiss utility, ewz. Global warming potential (GWP) of new gas mixture is almost 100 percent lower than GWP of SF6. http://new.abb.com/eco-efficient-gas-...