永磁磁场对开关电器灭弧性能影响的研究

Research on the Effect of the Permanent Magnetic Field on Arc Quenching Performance in Switchgear

在分析开关电器直流电弧熄灭原理的基础上 ,在触头弧隙加装不同规格的永磁体 ,通过不同结构永磁磁场对灭弧性能影响的分析及试验研究结果表明 ,在开关电器弧隙中加装永磁体后 ,永磁产生的磁场可提高灭弧能力 ,缩短燃弧时间。

Based on the analysis on DC arc quenching principle of switchgear,the permanent magnets with different sizes are mounted in the arc gap.According to the analyses of the influences of permanent magnets with different sizes on the arc-quenching performance and the experimental results,it is proved that,after mounting the permanent magnet in the arc gap,the magnetic field generated by permanent magnet has an important effect on the improvement of arc-quenching performance and reduction of arcing time in switchgear.