2005-09-13 - Please read the article by Andreas Reimueller, Giuliano Monizza, Silvio Stangherlin and Thor Endre in the new issue of the ABB Review
For some time now, SF6 technology has been used in high voltage switchgears (above 1000 V, as well as in medium voltage switchgears and circuit breakers) in power generation, transmission and distribution plants around the world. The insulating – and extinguishing – gas sulphur hexafluoride (SF6) is a non-toxic, non-ozone depleting, non-combustible gas with outstanding electrical properties. However, it belongs to the greenhouse gases covered by the Kyoto Protocol.
The specific Global Warming Potential (GWP) of SF6 is approximately 23,000 times that of CO2. However, thanks to a sealed design combined with sound production, service and end of life management, electrical equipment containing SF6 gas allow for solutions that have a minimal impact on the environment.
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