By Topic

Current zero behavior of vacuum interrupters with bipolar and quadrupolar AMF contacts

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
$33 $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

2 Author(s)
K. Steinke ; Inst. fur Hochspannungstechnik und Elektrische Energieanlagen, Tech. Univ. of Braunschweig, Germany ; M. Lindmayer

Axial magnetic field (AMF) contacts are applied in vacuum circuit breakers to interrupt high short-circuit currents. A magnetic field parallel to the current flow in the arc column improves the breaking capacity by affecting the arc mode. Depending on the design of the contacts, this magnetic field can take different directions over the contact surface. In this paper, measurements of bipolar and quadrupolar AMF contact systems are presented. For bipolar arrangements, the polarity of the field changes once and for quadrupolar arrangements twice. Due to different eddy current paths, the residual magnetic field at current zero is significantly higher for the quadrupolar arrangement. The breaking capability of two contact systems was investigated and completed by measuring the post arc current.

Published in:

IEEE Transactions on Plasma Science  (Volume:31 ,  Issue: 5 )