Negative DC Breakdown Characteristics of C3F7CN / CO2 Gas Mixture for Application in High Voltage Accelerators
| Autor: | L. Chen, Denis Joassin, Faisal Omar Bahdad, Ibrahim Iddrissu, Louis Maksoud, Yannick Kieffel, John Dabin |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Field (physics) Analytical chemistry High voltage 01 natural sciences Temperature measurement Sulfur hexafluoride chemistry.chemical_compound chemistry Coaxial geometry 0103 physical sciences Electrode High field Electric potential Electrical and Electronic Engineering |
| Zdroj: | IEEE Transactions on Dielectrics and Electrical Insulation. 28:946-954 |
| ISSN: | 1558-4135 1070-9878 |
| Popis: | This study investigates the technical feasibility of retro-filling a C 3 F 7 CN/CO 2 gas mixture for existing SF 6 -insulated accelerators. Negative DC breakdown characteristics of 20% C 3 F 7 CN / 80% CO 2 gas mixture and SF 6 for varying pressure, gap distance and field uniformity are analyzed experimentally using four distinctly different electrode configurations. The C 3 F 7 CN/CO 2 gas mixture shows a higher breakdown strength than SF 6 for configurations with high field uniformity, whereas SF 6 outperforms C 3 F 7 CN/CO 2 gas mixture under the non-uniform field. Importantly, 20% C 3 F 7 CN / 80% CO 2 gas mixture exhibits comparable insulation capability to SF 6 in a 10/30 mm coaxial geometry with similar field uniformity as found in the practical gas-insulated equipment. The results of this work contribute to the development of a potential retro-fill solution using 20% C 3 F 7 CN / 80% CO 2 gas mixture for accelerators. |
| Databáze: | OpenAIRE |
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