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HYBRID GIS INSULATED SWITCHGEAR 66 kv gis switchgear Treatment factorys

Application of SF6 mixture gases in GIS in Northern China· PDF fileSystem Voltage 550 kV 220 kV 110 kV 66 kV SF 6 /CF 4 11 174 85 75 SF 6 /N 2 / 4 11 / Mixed-gas filling with SF 6 and CF 4 or N 2 deteriorates the thermal and dielectric breaking capacity, which can be compensated for with a slightly higher operating pressure. SF 6 /CF 4 mixture offered some important advantages over the SF 6 /N 2 mixture.Cited by: 4

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