Post-Arc Current After High-Current Interruption in Vacuum
- 1 August 1985
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Electrical Insulation
- Vol. EI-20 (4) , 739-744
- https://doi.org/10.1109/tei.1985.348900
Abstract
Detailed measurements of post-arc current in a vacuum were made. This investigation was particularly characterized by conducting post-arc current measurements following high arc currents (36 kA rms maximum). Postarc current increases with main arc current, and shows a sharp increase when the main arc current reaches certain value. The magnitude of post-arc current for each contact material differed; the descending order is Cu-Bi > Cu > Cu-W > Ag-W. Shield current was also measured to clarify the characteristics of the ion current. Cu-Bi > Cu > Cu-W > Ag-W was the descending order of measured shield current. The characteristics of post-arc current are explained by referring to those results.Keywords
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