摘要
针对低压配电系统I类试验浪涌保护器防雷设计要求,研究了低气压条件下气体辉光放电和弧光放电的变化规律及间隙放电的响应时间。试验在低气压条件下进行,试验电压为直流电压,电极材料为钨铜,电极直径10 mm,电极间隙距离2~5 mm。试验结果显示,气体辉光放电到弧光放电的转换时间随着气压的升高而增加;在响应时间小于100 ns条件下,随着间隙距离增加气压范围逐渐减小。对应于间隙距离2、3、5 mm,满足时间小于100 ns条件的气压范围分别为小于100、60、40 Pa。
According to the requests of class I test of lightning protection for surge protective device(SPD) in low voltage power distribution system,the glow-to-arc transition and response time were studied.The experiments were carried out in low atmospheric pressure,and in the action of DC voltage.The electrode materials are W-Cu,electrode diameter 10 mm and the distance between two electrodes is 2~5 mm.The results indicate that the time of glow-to-arc transition is increasing with atmospheric pressure increasing;if t100 ns,the atmospheric pressure range is decreasing with gap distance increasing.When the distance is 2 mm,3 mm and 5 mm,the atmospheric pressure range is less than 100 Pa,60 Pa and 40 Pa,respectively.
出处
《低压电器》
北大核心
2011年第18期12-15,共4页
Low Voltage Apparatus
基金
陕西省教育厅专项科研计划(11JK0888)
关键词
浪涌保护器
气体放电特性
低气压
响应时间
surge protective device(SPD)
gas discharge characteristic
low atmospheric pressure
response time