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Possibility of high current interruption of vacuum interrupter with low surge contact material: improved Ag-WC

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7 Author(s)
Kaneko, E. ; Toshiba Corp., Tokyo, Japan ; Yokokura, K. ; Homma, M. ; Satoh, Y.
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High-current interruption experiments were carried out on low-surge contact material Ag-WC set in axial magnetic field electrodes. The most influential factors on high-current interruption are the contact material, the axial magnetic field, and the initial opening speed. Though the interruption ability of conventional contact material was limited up to 20 kA, the ability of the improved material rose up to 40 kA in the test using the laboratory model vacuum circuit breaker

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Power Delivery, IEEE Transactions on  (Volume:10 ,  Issue: 2 )