SF₆ has been extensively deployed in high voltage gas insulated equipment to be used as a dielectric medium since 1960 because of its excellent dielectric strength and arc interruption performance. This research proposes promising substitute of SF₆, by investigating a refrigerant gas such as Chlorodifluoromethane (CHClF₂) with a mixture of CO₂/N₂/Air to mitigate environmental hazards of SF₆. R₂₂ has less atmospheric life and low cost as compared to SF₆. It has less GWP (1,810) as compared to SF₆ (23,900). In this research, the AC and DC breakdown properties of R₂₂ mixtures along with varying ratios of CO₂, N_2, and Air were investigated. The best alternative to SF₆ has been found to be a mixture of R₂₂ + N₂ which is close to 81% of SF₆ dielectric strength. The dielectric strength of different optimal mixtures was found in the order of SF₆ > R₂₂ + N₂ > R₂₂ + Air > R₂₂ + CO₂ under AC voltage at 0.4 MPa. Moreover, the boiling point and GWP were further reduced by adding the buffer gases such as N_2,, CO₂, and Air. R₂₂ also has acceptable insulation self-recoverability and liquefaction temperature. The results of this study are promising in terms of low cost and environment-friendly alternative to SF₆.

SF ₆自1960年以来就已广泛部署在高压气体绝缘设备中，用作介电介质，因为它具有出色的介电强度和灭弧性能。这项研究提出了有希望的替代SF _6的方法，方法是研究一种制冷剂气体，例如氯二氟甲烷（CHClF ₂）与CO ₂ / N ₂ /空气的混合物，以减轻SF _6的环境危害。与SF ₆相比，R _22的大气寿命短且成本低。与SF ₆（23,900）相比，它的GWP（1,810）少。在这项研究中，R ₂₂的交流和直流击穿特性研究了混合气体以及不同比例的CO ₂，N ₂和空气。发现SF ₆的最佳替代物是R ₂₂  + N ₂的混合物，其接近SF ₆介电强度的81％。在0.4 MPa的交流电压下，发现不同的最佳混合物的介电强度依次为SF ₆  > R ₂₂  + N ₂  > R ₂₂  +空气> R ₂₂  + CO ₂。而且，通过添加诸如N ₂，CO ₂和空气的缓冲气体，进一步降低了沸点和GWP 。R ₂₂还具有可接受的绝缘自恢复性和液化温度。这项研究的结果在SF _6的低成本和环保替代方面很有希望。