冲击电流试验是高压试验的重要组成部分,广泛应用于避雷器和电涌保护器等产品的试验检测。当试品为线性负载时,某一冲击电流幅值对应的试验设备充电电压可通过理论公式进行相对精确的计算;当试品为避雷器等非线性负载时,与之对应的设备充电电压则难以确定。通常需要基于大量历史数据和长期经验累积、或反复调试方能确定合适的充电电压。为此,基于理论推导,提出了适用于避雷器/电阻片等非线性负载情况下,估算冲击电流幅值所对应试验设备充电电压的方法,并采用多种电阻片进行了验证,试验结果表明该估算方法较为准确 ...
余龙龙
doaj
JEC—203—1978日本电气学会电气规格调查会技术标准——避雷器(续二)
7.15 操作冲击动作负载试验本试验用于验证对操作过电压的动作负载。对于标称放电电流为10000安的避雷器,分别对新试品施行下述(A)(模拟断路器重燃弧)或(B)(模拟断路器重合闸)的试验。(A)操作冲击动作负载 A 试验。适用范围:适用于额定电压280千伏以下的避雷器。
王亚平
doaj
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