The impact of capacitor bank inrush current on field emission current in vacuum

M. Koochack-Zadeh, V. Hinrichsen, R.P.P. Smeets, A. Lawall

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

18 Citations (Scopus)
187 Downloads (Pure)


Field emission current measurements during the recovery voltage are investigated to understand the origin of restrikes in vacuum interrupters in case of the interruption of capacitive loads. Measurement and analysis of very small field emission currents (0.01 - 1 mA) from the current zero crossing until the restrike are performed both in an experimental circuit as well as in a full-power test-circuits with commercially available vacuum circuit breakers (up to 36 kV rated voltage). Furthermore, the influence of pre-arcing at contact closing under inrush currents in the range of some kA and kHz on the field emission characteristics after capacitive current switching is investigated. The number of making operations as well as the amplitude of the inrush current is varied. A clear relation between inrush current during closing and field emission current after interruption was established.
Original languageEnglish
Title of host publicationProceedings of the 2010 24th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV), August 30 - September 3, 2010, Braunschweig, Germany
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
ISBN (Print)978-1-4244-8366-2
Publication statusPublished - 2010


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