Abstract:
This paper estimates anode surface temperature at the current interruption limit by measuring the melting time of a contact material after current interruption and simula...Show MoreMetadata
Abstract:
This paper estimates anode surface temperature at the current interruption limit by measuring the melting time of a contact material after current interruption and simulating the anode surface temperature. As a result, the minimum anode surface temperature of CuCr(50/50) contact material was about 1750 K. We also calculated the metal vapor density between electrodes with a simplified model. The calculation results showed that the critical vapor density was about 3/spl times/10/sup 20/ atoms/m/sup 3/. This vapor density is equivalent to the averaged pressure of 8 Pa, which is close to the value of the Paschen minimum.
Published in: IEEE Transactions on Plasma Science ( Volume: 25, Issue: 4, August 1997)
DOI: 10.1109/27.640677