The role of impurities on the deviation from Paschen's law of SF6
- 14 December 1986
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 19 (12) , 2337-2342
- https://doi.org/10.1088/0022-3727/19/12/013
Abstract
Deviations to Paschen's law for SF6 at high pressures are commonly explained by field enhancement due to protrusions supposed to exist at the surface of the electrodes. New experiments for positive polarity allow the authors to draw a different conclusion, i.e. to ascribe these deviations to the impurities of the gas, especially to the combined effect of O2 and H2O. For negative polarity, impurities play a minor role and the threshold is very sensitive to the surface state of the stressed electrode.Keywords
This publication has 2 references indexed in Scilit:
- The effect of surface roughness on breakdown in SF6IEEE Transactions on Power Apparatus and Systems, 1975
- Particle-Initiated Breakdown Between Coaxial Electrodes in Compressed SF6IEEE Transactions on Power Apparatus and Systems, 1973