| Autor: |
R. Methling, St. Franke, M. Abplanalp, K. O. Menzel, Sergey Gortschakow, Ralf-Patrick Sutterlin, Thierry Delachaux |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV). |
| DOI: |
10.1109/deiv.2016.7748730 |
| Popis: |
The present contribution reports on investigations of electrode temperatures for Cu-Cr butt electrodes exposed to vacuum arcs with sinusoidal currents of 10–20 kA. Near infrared spectroscopy was carried out by means of a fiber optics spectrometer working in the wavelength range from 900 to 1700 nm with a temporal resolution of 1–2 ms. Electrode surface temperatures after current zero were obtained from the relative shape of the spectrum using a Planck curve fitting procedure. Furthermore, electrode emissivities were derived after performing absolute calibration of the spectra. Pyrometric measurements were performed in the spectral range around 2 μm with high temporal but without spatial resolution. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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