Electric breakdown in CO2/O2 gas mixture in weakly and strongly non-uniform electric field distributions at temperatures 300-4000K
DOI:
https://doi.org/10.14311/ppt.2025.2.142Keywords:
SF6 alternatives, circuit breaker, CO2, electric breakdownAbstract
Gas breakdown in weakly and strongly non-uniform electric fields at elevated temperatures, which can occur in gas circuit breakers after current interruption, is decisive for the performance of such devices. In a previous contribution [1], breakdown under such conditions was examined for the case of nearly uniform electric field distribution in a test setup. Results of an investigation of weakly to strongly uniform electric field distributions in axial and transverse gas flow will be shown in the present contribution. The pressure was typically in the range of 0.1 MPa to 0.4 MPa and temperatures were in the range of 300 K to 4000 K. The conditions for breakdown and their dependence on temperature and pressure will be discussed.
References
M. Seeger, T. Votteler, S. Pancheshnyi, et al. Breakdown in CO2/O2 and CO2/O2/C2F4 mixtures at elevated temperatures in the range 1000–4000K. Plasma Physics and Technology Journal, 6:39–42, 07 2019. doi:10.14311/ppt.2019.1.39.
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