烧结温度对工业ZnO压敏电阻避雷器电气的影响

Sintering Temperature Affect on Electrical Performance of Industrial ZnO Thermistors Lightning Arrester

综合比较工厂试验结果得到的微观结构和电气参数的差异,优化得到了适合作为高电压梯度ZnO电阻片的配方和工艺。研制的ZnO电阻片在1135。C电压梯度达到330V/mm,最小漏电流IL4μA。并研究了其致密化过程,运用SEM、电性能测试等手段,分析了烧结温度对其微观结构和电性能的影响。

By comprehensive comparison from testing results in the factory, we obtained differences between mierostructure and electrical parameters. By optimization, we obtained formula and techniques for ZnO arrester with suitable high voltage gradients. The developed ZnO arrester had a voltage gradient of 330 V/mm at the temperature of 1 135 degrees, with a maximum leakage current of IL4 uA. The paper also studied densification process, by means of SEM, and electrical test, and analyzed the sintering temperature affect on microstructure and electrical performance