MOV工频短路失效试验研究  

Experimental Study on Power Frequency Short-Circuit Failure of MOV

作　　者：任晓明[1] 王碧云 

机构地区：[1]上海电机学院,上海201306 [2]上海电器陶瓷厂有限公司,上海200071

出　　处：《电器与能效管理技术》2015年第12期36-38,共3页Electrical & Energy Management Technology

基　　金：上海市自然科学基金(12ZR1411700);上海市教委优青项目(ZZSDJ12003)

摘　　要：采用工频试验研究的方法对不同最大持续工作电压UC、不同压敏电压下的MOV施加工频电压。通过改变施加工频电压的幅值和预期短路电流,测量流过MOV的电流值和电压值,判断MOV是否短路失效。通过试验,可以获知不同UC、不同压敏电压下的MOV击穿时间及击穿短路电流大小。试验结果可以为在电涌保护器中合理配置MOV的设计提供参考。This paper researched on power frequency short-circuit failure of zinc oxide varistor （MOV）. By using the experimental study method under different Uc and varistor voltage and by changing the amplitude and short circuit current,the voltage and the short-circuit current which flows through MOV were measured, and the short- circuit failure can be judged. Through the test, the MOV breakdown time and the short-circuit cun＇ent can be obtained while the Uc and varistor voltage are different. The results can provide reference for the rational allocation of MOV in the design of surge protection device（SPD）.

关 键 词：MOV 压敏电阻器 击穿时间 短路失效 短路电流 SPD 

分 类 号：TM86[电气工程—高电压与绝缘技术]