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This article investigates the arcing characteristics of the intermediate frequency vacuum arc under different breaking speed conditions. The experiment uses a specially designed intermediate frequency vacuum arc test platform with adjustable breaking speed. The breaking speed varies from 0.6 to 1.4 m/s and the frequency ranges from 360 to 800 Hz. The results indicate that, within the tested range of breaking speed and frequency variations, the arc voltage during the arcing process decreases with the increase of breaking speed and frequency, but the degree of influence is different. The volt-ampere characteristic curve of the intermediate frequency vacuum arc exhibits distinct regions and the variation order of the volt-ampere characteristic changes with the increase of electrode opening delay time. Under higher frequency conditions, there is a case of first half-wave breaking failure. This occasional breaking failure is not due to insufficient breaking ability, but increasing the breaking speed appropriately can help solve this problem. This article provides experimental support for understanding the arcing rules of intermediate frequency vacuum arc.
Xia et al. (Tue,) studied this question.
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