Effect of air ingress on decomposition of C4F7N gas mixture exposed to electric arcing

Singh, Sukhwinder, Michelarakis, Michail ORCID: https://orcid.org/0000-0003-2862-4539, Sangineni, Rohith, Clark, David ORCID: https://orcid.org/0000-0002-1090-2361, Albano, Maurizio ORCID: https://orcid.org/0000-0002-5486-4299, Haddad, Manu ORCID: https://orcid.org/0000-0003-4153-6146, Wilson, Gordon and Waldron, Mark 2024. Effect of air ingress on decomposition of C4F7N gas mixture exposed to electric arcing. Presented at: UPEC 2024, Cardiff, Wales, 02-06 September 2024. Proceedings 59th International Universities Power Engineering Conference (UPEC). IEEE, 10.1109/upec61344.2024.10892440

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Abstract

This study investigates the impact of breakdown events on the decomposition of C4F7N-based gas mixture, both in its non-contaminated state and when contaminated with atmospheric air at elevated level. GCMS analysis reveals that the presence of atmospheric air ingress leads to a decrease in the counts of gaseous by-products in comparison to noncontaminated gas mixture, without the generation of new byproducts. This study also examines the effect of breakdown events, finding an increase in concentration of known byproducts without emergence of new by-products. These results suggest that elevated atmospheric impurity levels do not induce further decomposition of the gas mixture under electrical arcing applications.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Schools > Engineering
Publisher:	IEEE
ISBN:	979-8-3503-7973-0
Last Modified:	09 Oct 2025 13:16
URI:	https://orca.cardiff.ac.uk/id/eprint/176764

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