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便携式超轻型高频直流高压发生器几种测量方法

日期:2021-09-10 14:13
浏览次数:132
摘要: 1、直流高压发生器在使用前应检查其完好性,连接电缆不应有断路和短路,设备无破裂等损坏。 2、将机箱、倍压筒放置到合适位置分别连接好电缆线、接地线和电源线,保护接地线与工作接地线以及放**的接地线均应单独接到试品的地线上(即一点接地)。严禁各接地线相互串联,为此,应使用ZGF专用接地线。 3、电源开关放在关断位置并检查调压电位器应在零位。过电压保护整定值一般为试验电压的1.1倍。 4、空载升压检测过电压保护整定是否灵敏。 5、接通电源开关,此时绿灯亮,表示电源接通。 6、按红色...

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11、SHIYANWANBI,JIANGYA,GUANBIDIANYUAN。

12、JIZHONGCELIANGFANGFA:

a.一般测量时,当接好线后,先把联接试品的线悬空,升到试验电压后读取空试时的电晕和杂散电流I,然后接上试品升到试验电压力读取总电流

I1;试品泄漏电流:IO= I1-I’

b.当需要**测量被试品泄漏电流时,则应在高压侧串入高压微安表 

微安表必须有金属屏蔽,应采用屏蔽与试品连接。高压引线的屏蔽引出应与仪表端的屏蔽紧密连接。如果试品表现污秽要排除试品表面泄漏电流的影响可在试品高电位端用裸金属软线紧密绕几圈后与高压引线的屏蔽相连接 

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