过电压保护器安全隐患分析及改造  

Hidden Danger and Reform of Over-voltage Protector

作　　者：刘晓峰[1] 

机构地区：[1]山西兰花科技创业股份有限公司伯方煤矿,山西晋城048000

出　　处：《机械管理开发》2015年第10期42-44,共3页Mechanical Management and Development

摘　　要：带火花间隙的组合式过电压保护器,由于有间隙的存在,无法做直流1mA下的电压U 1mA及0.75U1mA下的泄漏电流检测,只能做绝缘电阻与工频放电试验,也就不能从预防试验的角度来判断氧化锌阀片是否受潮或老化,给用户单位带来巨大隐患,就此提出改造措施以保证运行平稳。With modular over-voltage protector of spark gap,because there is a gap which can＇t do dc voltage U1 mA under 1mA and leakage current test under 0.75U1 mA,can only make insulation resistance and discharge power frequency test,also cannot from the angle of the prevention trial to determine zinc oxide valve plates will be affected with damp be affected with damp or aging,brings huge hidden trouble to the user unit,modification measures are proposed to ensure the smooth operation.

关 键 词：带放电间隙过电压保护器 老化 热崩溃 

分 类 号：TM862[电气工程—高电压与绝缘技术]