掺杂碳酸锂对高梯度氧化锌电阻片性能的影响

Effect of Doped Lithium Carbonate on Properties of High Gradient Zn O Varistors

通过改变高阻层配方碳酸锂的含量,分析不同高阻层配方对高梯度氧化锌电阻片方波通流容量、大电流冲击、雷电压比和老化系数等参数性能的影响。当碳酸锂的含量为0.3 g时,梯度为330 V/mm的Φ71×22.5高梯度氧化锌电阻片的方波通流容量达到800 A,其余电性能参数均在国标要求范围内。

By changing the content of lithium carbonate in high-resistance layer formula lithium carbonate,the effects of different high-resistance layer formulations on the parameters such as square wave flow capacity,high current impact,lightning voltage ratio and aging coefficient of high-gradient zinc oxide resistors are analyzed.When the content of lithium carbonate is 0.3 g,the voltage gradient ofΦ71×22.5 high gradient zinc oxide resistor is 330 V/mm which the square wave flow capacity reaches 800 A,and the remaining electrical performance parameters satisfy the requirements of national standard.