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A series of experiments have been carried out to suppress these asymmetrical structures of the wire-array Z pinch by applying a fast rising prepulse current and using insulated coatings. The single wire or a multiwire array load is investigated by a set of diagnostics with high temporal and spatial resolution including laser probing, high speed photography, and etc. Under a 1 kA, 100 A/ns current,...
Characteristics of vacuum arc seriously influence the interruption ability of vacuum switches. In many cases (especially in commercial electrode systems), vacuum arcs are not completely axial symmetrical configuration. So, three-dimensional simulation of vacuum arc is needed. On the other hand, when the interruption current is very high, the anode will be in active state and becomes another source...
Electrode material seriously influences the characteristics of vacuum arc and further affects the performance of switches. In this paper, thermal processes of six kinds of metal anodes (including pure metal and alloy anodes) are simulated and researched. Two kinds of temperature calculation methods are used. Simulation results show that W and Mo anodes have the higher temperature than Cu, Cr, CuCr25...
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