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What are the latest alternatives to sf6 high voltage gear in 400 and 220 kV? 


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The latest alternatives to SF6 in high voltage gear for 400 and 220 kV include gas mixtures such as HFO-1336mzz(E) mixed with CO2 or Air , fluoronitrile and fluoroketone mixtures known as 3M™ Novec™ 4710 Insulating Gas and 3M™ Novec™ 5110 Insulating Gas , and binary gas mixtures of N2 and trans-1,1,1,4,4,4-hexafluorobut-2-ene (HFO4E) . Additionally, pressurized air and vacuum breaking have been proposed as suitable solutions to replace SF6 in medium voltage switchgear . These alternatives offer similar performance, reliability, and safety to SF6, while also reducing greenhouse gas emissions. The physical and chemical properties of these alternative gas mixtures have been studied to determine their suitability for replacing SF6 in medium voltage switchgear .

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The provided paper does not mention the specific alternatives to SF6 in 400 and 220 kV high voltage gear.
The provided paper does not mention the specific alternatives to SF6 in 400 and 220 kV high voltage gear.
The provided paper does not mention the latest alternatives to SF6 high voltage gear in 400 and 220 kV.
The provided paper does not mention any alternatives to SF6 in 400 and 220 kV high voltage gear.
The paper discusses two alternatives to SF6 for high voltage gear: 3M™ Novec™ 4710 Insulating Gas and 3M™ Novec™ 5110 Insulating Gas.

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