Visualization and characterization of high-current diffuse vacuum arcs on axial magnetic field contacts
- 1 April 2000
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Plasma Science
- Vol. 28 (2) , 443-451
- https://doi.org/10.1109/27.848103
Abstract
We have investigated the behavior of drawn vacuum arcs for several designs of axial magnetic field (AMF) contacts using high-speed digital photography and arc voltage measurements, As the peak current was increased, a gradual transition occurred in the arc appearance from a multiple cathode-spot arc to the high-current diffuse mode, and then to a high-current diffuse columnar mode. Two relatively simple models based on the literature are used to explain the results. The first is an empirical criterion for using the arc voltage behavior to determine the maximum arc current for which an AMF geometry can produce a high-current diffuse mode from the initial bridge column arc. The second model predicts the highest arc current that can be forced into a fully diffuse mode for given values of the AMF and the contact arcing radius. The predictions of these models are compared to our experimental and analytical results.Keywords
This publication has 12 references indexed in Scilit:
- Arc behaviour in axial magnetic field vacuum interrupters equipped with an external coilPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Physical and theoretical aspects of a new vacuum arc control technology-self arc diffusion by electrode: SADEIEEE Transactions on Plasma Science, 1999
- Technological progress of axial magnetic field vacuum interruptersIEEE Transactions on Plasma Science, 1997
- Sequential modes of drawn vacuum arcs between butt contacts for currents in the 1 kA to 16 kA rangeIEEE Transactions on Components, Packaging, and Manufacturing Technology: Part A, 1995
- Effective erosion rates for selected contact materials in low-voltage contactorsIEEE Transactions on Components, Packaging, and Manufacturing Technology: Part A, 1995
- Evaluation of AC axial magnetic fields needed to prevent anode spots in vacuum arcs between opening contactsIEEE Transactions on Components, Packaging, and Manufacturing Technology: Part A, 1994
- Effect of an axial magnetic field upon the development of the vacuum arc between opening electric currents (currents read contacts)IEEE Transactions on Components, Hybrids, and Manufacturing Technology, 1993
- The Vacuum Interrupter ContactIEEE Transactions on Components, Hybrids, and Manufacturing Technology, 1984
- The High Current Metal Vapor Arc Column between Separating ElectrodesIEEE Transactions on Plasma Science, 1980
- The Effect of Electrode Material on the Initial Expansion of an Arc in VacuumIEEE Transactions on Parts, Hybrids, and Packaging, 1972