Thermal interruption performance of SF6 replacement gases and its dependence on material properties

Jiudun Yan, Quan Zhang, Kun Cao

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


The importance of correctly understanding and assessing the interruption capability of gases that have the potential to replace SF6 for switching purposes is discussed. Issues relating to the assessment of the interruption capability are addressed. A brief summary is also given to recent industrial tests in the search of SF6 replacement gases. The dominant energy exchange mechanisms responsible for the differing interruption capabilities of N2, CO2 and SF6 are analysed using a calibrated arc model. Correlation between the interruption capability and material properties of a number of gases has been established, thus providing theoretic evidence on the selection criteria for SF6 replacement gases in future.

Original languageEnglish
Pages (from-to)23-30
Number of pages8
JournalGaoya Dianqi/High Voltage Apparatus
Issue number12
Publication statusPublished - 16 Dec 2016
Externally publishedYes


  • CO
  • Interruption capability
  • N
  • Nozzle arc
  • SF replacement gases
  • Turbulence model

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