Field electron emission current in vacuum interrupters after large inrush current

R.P.P. Smeets, S. Kuivenhoven, S. Chakraborty, G. Sandolache

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

14 Citations (Scopus)

Abstract

Field electron emission (FEE) current in the open(ing) gap of nine different designs of 36 kV vacuum interrupters under standard recovery voltage conditions was measured during full-power back-to-back capacitive switching. During closing operation, 20 kA inrush current (@ 4250 Hz) was applied. The measurement system is described, able to measure FEE current with a threshold of 30 µA but that also has to withstand a full capacitor bank discharge current of up to 40 kA after re-strike. It was concluded that in spite of the wide variety of measured FEE current magnitude (up to several mA) there is no direct relationship between magnitude of FEE current and probability of breakdown. Longer arc duration of the normal load current reduces the FEE current level after load current interruption.
Original languageEnglish
Title of host publicationProceedings of the 2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV), 2-7 September 2012, Tomsk, Russia
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages157-160
DOIs
Publication statusPublished - 2012
Eventconference; XXVth International Symposium on Discharges and Electrical Insulation in Vacuum; 2012-09-02; 2012-09-07 -
Duration: 2 Sep 20127 Sep 2012

Conference

Conferenceconference; XXVth International Symposium on Discharges and Electrical Insulation in Vacuum; 2012-09-02; 2012-09-07
Period2/09/127/09/12
OtherXXVth International Symposium on Discharges and Electrical Insulation in Vacuum

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