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Takeshi Yoshida - IEEE Xplore Author Profile

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In vacuum interrupters, plasma remains between the electrodes after the current zero because of arcs generated by the interruption of short-circuit current. This residual plasma consisting of ions, electrons, and metal vapor affects the insulation recovery process after the short-circuit current interruption. The ion and electron densities can be attributed to the post-arc current and the electrod...Show More
In vacuum interrupters, plasma remains between the electrodes after the current zero due to arcs generated by the interruption of short-circuit current. This residual plasma affects the insulation recovery characteristics after current interruption. The post-arc current is a parameter that correlates with this ion density. It is also affected by the secondary electrons generated when the ions hit ...Show More
In vacuum interrupters (VIs), vacuum arc behavior strongly affects interruption ability. To increase interruption ability of axial magnetic field (AMF) electrode by preventing local heating of the electrodes, to diffuse the arc widely at surface of electrodes is important. The arc immediately after electrodes separation is localized. This arc gradually diffuse and is eventually stabilized by the A...Show More