Abstract
A method for estimating an anode-fall and a cathode-fall voltages of an arc discharge was proposed. By using this method, the separate estimation of the anode-fall and the cathode-fall voltages was performed for an air arc in atmosphere burning between silver electrodes. The derived anode-fall and cathode-fall voltages proved to be about 4.5 V and 14 V, respectively. It was also found that the anode-fall and the cathode-fall voltages were almost independent of an arc current in the range from 350 to 1200 A.
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