Properties of Vacuum Arcs Generated by Switching RMF Contacts at Different Ignition Positions

Sergey Gortschakow, Steffen Franke, Ralf Methling, Diego Gonzalez, Andreas Lawall, Erik D. Taylor and Frank Graskowski
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Sergey Gortschakow: Department of Plasma Radiation Techniques, Leibniz Institute for Plasma Science and Technology, 17489 Greifswald, Germany
Steffen Franke: Department of Plasma Radiation Techniques, Leibniz Institute for Plasma Science and Technology, 17489 Greifswald, Germany
Ralf Methling: Department of Plasma Radiation Techniques, Leibniz Institute for Plasma Science and Technology, 17489 Greifswald, Germany
Diego Gonzalez: Department of Plasma Radiation Techniques, Leibniz Institute for Plasma Science and Technology, 17489 Greifswald, Germany
Andreas Lawall: Siemens AG, 13629 Berlin, Germany
Erik D. Taylor: Siemens AG, 13629 Berlin, Germany
Frank Graskowski: Siemens AG, 13629 Berlin, Germany

Energies, 2020, vol. 13, issue 21, 1-13

Abstract: The influence of initiation behavior of the drawn arc on the arc motion, on arc characteristics during the active phase, as well as on the post-arc parameters, was studied. The study was focused on arc dynamics, determination of the anode surface temperature after current interruption, and diagnostics of metal vapor density after current zero crossing. Different optical diagnostics, namely high-speed camera video enhanced by narrow-band optical filters, near infrared spectroscopy, and optical absorption spectroscopy was applied. The initiation behavior of the drawn arc had a clear influence on arc parameters. Higher local electrode temperature occurs in case of the electrodes with ignition point near the outer electrode boundary. This further causes an enhanced density of chromium vapor, even in cases with lower arc duration. The results of this study are important for design development of switching RMF contacts for future green energy applications.

Keywords: vacuum interrupter; switching arc; optical diagnostics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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