绝缘电阻测量特点研究
时间：2011-01-20 16:50 作者：特封电子科技有限公司 点击：次
绝缘电阻测量:对多元件组合的绝缘子可在停电和带电情况下进行;对单元件绝缘子只能在停电下测量.
绝缘电阻测量:对多元件组合的绝缘子可在停电和带电情况下进行；对单元件绝缘子只能在停电下测量.
采用2500V及以上兆欧表测试.当瓷件龟裂处有湿气、灰尘、脏污侵入后,绝缘电阻将显著下降.测多元件支柱绝缘子每一元件绝缘电阻时,应在分层胶合处绕铜线,然后接到兆欧表上.带电测量绝缘子的绝缘电阻是借高电阻接至带电的绝缘子上,并用处于地电位的兆欧表测量.从测得的电阻值减去高电阻的电阻值,即为被测绝缘子的绝缘电阻.
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