Extinction of Short A. C. Arcs Between Brass Electrodes

Abstract

Results are given which show that the dielectric recovery after current zero, of short, stationary A.C.arcs between brass electrodes, is similar to that of cold-electrode arcs previously investigated and described. These results also show that the rate of recovery of dielectric strength of hot-electrode arcs after a current zero may be greatly increased by reducing, within limits, the electrode separation. A possible explanation on the basis of ionic diffusion to the electrode surfaces and the deionizing action of blasts of metal vapor from the boiling electrodes is mentioned.