アフターアーク現象(第 3 報)

概要

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Authors have comparatively presisely mentioned the after-arc phenomena in its 1st and 2nd reports, namely we have investigated the special behaviors of the after-arcs with A. C. and D. C. arcs, discussed the possibility of the reignition from the view-point of its long duration. In this report we intend to take the after-arc resistance into consideration and verify experimentally our theory. Generally speaking, our expectations seem to be exact, namely when the arc voltage remains to be extremely low after the extinction of arc, the arc reignites if the interrupter will be switched on, and to the contrary, when the arc voltage becomes to be higher than a certain value, the arc never reignite even if the interrupter is switched in. In analysis of the mechanism of the reignition of the arc, we have induced the after-arc resistance and calculated its behaviors of variations with time. According to our results, the critical resistance to make the reignition possible seems to be about 10 kilo-ohm. It is a striking fact that this critical after-arc resistance may be nearly equal to the glow-to-arc transition resistance, and this fact seems to suggest the situation of the after-arc in the process of electrical discharge.
社団法人溶接学会の論文
1956-07-25