In order to explore the insulating properties of the new environmental friendly gas C₅F₁₀O and its mixtures, the manifestation in the breakdown performance of C₅F₁₀O/CO₂ mixtures under different pressures and different types of electric fields were studied. The non-uniformity of the electric field is adjusted by rod-plate electrodes of different sizes, additionally, the total pressure of the mixed gas is changed by aerating CO₂ gas while fixing the C₅F₁₀O partial pressure. It was found that with the decrease of the rod electrode diameter, the non-uniformity of the electric field increased, and the breakdown voltage of the mixed gas decreased significantly. While with the increase of the total gas pressure, although the volume fraction of C₅F₁₀O decreased, the breakdown voltage still showed an upward trend. To a certain extent, the gas pressure of C₅F₁₀O/CO₂ mixed gas can be increased, and the insulation performance similar to that of SF₆ can be exhibited.

Environmental friendly gas, breakdown voltage, insulation performance