降温速率对直流氧化锌电阻片电气性能影响的探究  

Influence of Cooling Rate on Electrical Properties of DC Zinc Oxide Varistor

作　　者：田冰 朱成洋 郭向洋 TIAN Bing;ZHU Chengyang;GUO Xiangyang(Jinguan Electric Co.,Ltd.,Nanyang 473000,China)

机构地区：[1]金冠电气股份有限公司,河南南阳473000

出　　处：《电瓷避雷器》2019年第6期131-138,共8页Insulators and Surge Arresters

摘　　要：论述了直流氧化锌压敏电阻片烧结过程中降温速率对其电气性能的影响,从直流电阻片的老化、伏安特性、温度系数、荷电率、吸潮性等方面对直流电阻片的电气性能进行了探究。实验结果表明:从高温点降到970℃,平均降温速率为27℃/h,从970℃降到870℃,平均降温速率为40℃/h,从870℃降到840℃,平均降温速率15℃/h,直流电阻片的各项电气性能参数较优。It is discussed the effect of cooling rate on the electrical properties of DC zinc oxide varistor during sintering. Explore the electrical properties of DC varistorfrom the aspects of aging,volt-ampere characteristics,temperature coefficient,charge rate and moisture absorption,etc. Experiments show that from the high temperature point to 970 ℃,the average cooling rate is 27 ℃/h,from 970 ℃ to 870 ℃,the average cooling rate is 40 ℃/h,from 870 ℃ to 840 ℃,the average cooling rate is 15 ℃/h,and the electrical performance parameters of the DC varistor are superior.

关 键 词：直流氧化锌电阻片 老化 伏安特性 温度系数 荷电率 吸潮性 

分 类 号：TM54[电气工程—电器]