Current Interruption in Gaseous Media

Assessment of Eco-friendly Gases for Electrical Insulation to Replace the Most Potent Industrial Greenhouse Gas SF6

“…In particular for high-voltage applications, SF 6 has been the electrical industry’s favored insulation and arc-quenching medium for half a century. , For very cold regions, SF 6 must be mixed with a more volatile carrier gas such as N 2 or tetrafluoromethane CF 4 to avoid liquefaction . GILs, typically filled with 20% of SF 6 in nitrogen, can be an alternative to cables, if the installation of overhead transmission lines is challenging because of space limitations or lack of public acceptance. ,, In radar systems of military reconnaissance planes, including the Airborne Warning and Control System (AWACS), SF 6 operates as an electrical insulating medium in the hollow conductors of the antenna .…”