【作者】 肖扬； 杨仲江； 刘健； 张春龙； 吕东波；

【Author】 XIAO Yang;YANG Zhong Jiang;LIU Jian;ZHANG Chun Long;LV Dong Bo;Nanjing University of Information Science and Technology,Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration;Lightning Disaster Warning and Protect Center of Hei Long Jiang Province;

【机构】 南京信息工程大学中国气象局气溶胶云降水重点开放实验室； 黑龙江省雷电灾害预警防护中心；

【摘要】 采用幅值为20k A、时间间隔为50ms的同时序冲击高压5脉冲对单片氧化锌压敏电阻元件进行冲击,试验表明单片难以承受多脉冲的大能量,平均冲击4~5次之后炸裂损坏。采用幅值均为40k A的多脉冲波形对两片并联的压敏电阻元件进行冲击,发现两片压敏电压相同的压敏电阻并联耐受多脉冲冲击次数比单片多一倍。而压敏电压相差10V的两片压敏电阻并联的耐受冲击次数甚至比单片少。通过对多脉冲冲击下的压敏电阻片电气参数及温度测试分析,多脉冲情况下的损坏机理主要以热击穿为主。更多还原

【Abstract】 In this paper, 8/20μs multiply strokes were applied to znovaristorswhose amplitude of current was 20 k A.The time interval between continuous impulseswas adjusted to 50 ms. The experimental result shows that the single znovaristor couldn’t bear the huge energy of multiply strokes. After 4~5strokes, every single znovaristorsis burst. While the same multiply strokes whose amplitude of current is 40 k Awere applied to the parallel ones, the result shows that the bearing capacitydoubles. But when U1 m Abetween the parallel ones reach to 10 v, the bearing capacity of parallel ones is less than the single one. By investigating the electrical characteristic and temperature variation of znovaristor under the multiply strokes, the major damage mechanism of znovaristor is thermal breakdown.更多还原