抄録
CF3I gas is one of the alternatives for SF6 which has been applied for electric power equipment. CF3I has some merit against SF6. For example, its insulation performance is equivalent or superior to SF6 in uniform field and its Global Warming Potential (GWP) is quite low as same as CO2. On the other hand, it has low sparkover voltage in non-uniform field. This paper reviews the discharge characteristics of CF3I and CF3I/N2, CF3I/CO2 and CF3I/SF6 mixtures and tries to find the pragmatic gas as an insulation medium with a simple ranking method where saturated gas pressure and GWP are taken into account.
