Investigate of Electrical Performance of CuCr30 Manufactured by Three Different Ways

Abstract

This paper compared the interruption , anti-welding and voltage withstand abilities of CuCr30 manufactured by three different ways, in which the influence of different manufactured ways on the electrical performance of vacuum interrupter (VI) was investigated. These results can worked as a reference for the selection of CuCr contacts used in the VI. The tested results compared the electrical performance under various CuCr30 manufactured by three different ways. Firstly, the results indicate that for arc-melted(VAR), powder metallurgy(PM) and vacuum casting(VIM) contacts power frequency withstand ability of those contacts can up to 65.9kV to 55.45kV 56.1kV respective.Secondly interruption times of those contacts is 20±3, 15±4 and 19±3 times and average welding force is 522.8N , 441.8N and 908.8N.