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Some vacuum interrupters (VIs) are equipped with transversal magnetic field contacts. A transversal directed Lorentz force makes the arc move circularly. The local surface temperature of the arc root is usually above the melting point at high current. The temperature of the heated and molten contact surface of a VI can be measured using a high-speed thermography camera. We present a methodology for...
Vacuum arc, as the key element of vacuum circuit breakers, is one of the important subjects in the field of high voltage apparatus. The forms of vacuum arc have great influence on the breaking capacity and reliability of vacuum circuit breakers. In this paper an experimental set-up of vacuum arc was designed for getting dynamic images of vacuum arc in short gap. At the same time a vacuum arc mode...
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