By Topic

Capacitance switching with vacuum circuit breakers-a comparative evaluation

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Glinkowski, M. ; Dept. of Electr. Power Eng., Rensselaer Polytech. Inst., Troy, NY, USA ; Greenwood, A. ; Hill, J. ; Mauro, R.
more authors

A statistical approach for determining the probability of reignition during capacitance switching by vacuum circuit breakers is described, wherein the dielectric recovery following current interruption is probed by overstressing the contact gap. It is found that the breakdown data can be quite well described by the Weibull distribution. The method is used to compare the capacitance switching performance of vacuum interrupters having copper/chromium and copper/bismuth contacts. Results imply a reignition rate for copper/bismuth almost two orders of magnitude higher than that for copper/chromium. Reignitions tend to occur when the arc angle (the period of arcing before current zero) is short, regardless of the contact material. The gap between CuCr contacts recovers more quickly than that between CuBi contacts. Very few reignitions after 2.5 ms were observed with CuCr contacts, whereas for CuBi reignitions persisted from 6 to 7 ms. This increases the likelihood of an overvoltage accompanying a reignition

Published in:

Power Delivery, IEEE Transactions on  (Volume:6 ,  Issue: 3 )