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Withstand Voltage Characteristics of Two Series Vacuum Interrupters

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6 Author(s)
Shiba, Y. ; Tokyo Denki Univ., Tokyo ; Ide, N. ; Ichikawa, H. ; Matsui, Y.
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To realize the high-voltage vacuum circuit breaker, we investigated the voltage-distribution ratio after current interruption at the double-break vacuum circuit breaker. We used the spiral CuCr (20%) electrodes and the axial magnetic-field CuCr (50%) electrodes as the experimental electrodes. At the double-break vacuum circuit breaker, where two vacuum interruptions that had the same and different characteristics of the electrode structure and contact materials were connected in series, there was a bias in the voltage-distribution ratio of each vacuum interrupter after current interruption. This seems to be because there was difference in the postarc current that passed through each vacuum interrupter after current interruption.

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Plasma Science, IEEE Transactions on  (Volume:35 ,  Issue: 4 )