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Proceedings Paper

Vacuum-state estimation of vacuum circuit breakers
Author(s): Geert C. Damstra; Rene P.P. Smeets; H. B. F. Poulussen
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Paper Abstract

The vacuum state of vacuum switching elements after production is checked normally by Penning- or Magnetron methods (combined electrical and magnetic field). Vacuum in the range of 10-1 - 10-4 Pa can be measured in this way. After assembly into circuit breakers however, these methods are not applicable. HF interruption performance during making operation has been proposed earlier as a possible alternative. Further investigations show that differences in the number of HF prestrike current loops can be found in the pressure range of 10-1 - 105 Pa. Current chopping of DC arcs between 5 and 30 A during opening operation, may be another option for determination of the pressure range by measuring the lifetime of the arc, but the resolution in the vacuum range below 10-1 Pa is too poor.

Paper Details

Date Published: 1 May 1994
PDF: 4 pages
Proc. SPIE 2259, XVI International Symposium on Discharges and Electrical Insulation in Vacuum, (1 May 1994); doi: 10.1117/12.174656
Show Author Affiliations
Geert C. Damstra, N.V. KEMA and Eindhoven Univ. of Technology (Netherlands)
Rene P.P. Smeets, Eindhoven Univ. of Technology (Netherlands)
H. B. F. Poulussen, Eindhoven Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 2259:
XVI International Symposium on Discharges and Electrical Insulation in Vacuum
Gennady A. Mesyats, Editor(s)

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