電纜絕緣電阻計(jì)算

1、不同型號電纜的20絕緣電阻型號規(guī)格導(dǎo)體直徑絕緣厚度 絕緣外徑20絕緣電阻常數(shù)20絕緣電阻M.km(R20)YJV YJLV8.710KV357.04.517.636701470508.34.518.9367013127010.04.520.6367011529511.64.522.23670103512013.04.523.6367095015014.64.525.2367087018516.24.526.8367080224018.44.529.0367072530020.64.531.2367066240023.44.534.03670596VV 0.6/1KV164.81.08.436.

2、79256.01.210.036.78357.01.211.036.77508.31.412.736.777010.01.414.436.769511.61.616.436.7612013.01.617.836.7515014.61.819.836.7518516.22.021.836.7524018.42.224.436.7430020.62.427.036.7440023.42.630.236.74備注：（1）Rt=R20/Kt（2） Rt-t時(shí)的絕緣電阻（3） R20-20時(shí)的絕緣電阻（4） Kt-絕緣電阻溫度系數(shù)（5） 由于交聯(lián)聚乙烯絕緣電纜標(biāo)準(zhǔn)僅規(guī)定90絕緣電纜常數(shù)，因此其絕緣電阻、

3、溫度系數(shù)僅供參考。絕緣電阻換算溫度系數(shù)（Kt）溫度聚氯乙烯 交聯(lián)聚乙烯100.210.42110.250.46120.290.50130.340.55140.400.60150.470.65160.550.71170.640.78180.740.85190.860.92201.001.00211.171.09221.341.19231.571.30241.811.41252.081.54262.431.69272.791.84283.221.99293.712.18304.272.38314.922.59325.602.82336.453.08347.423.35358.453.65369.7

4、03.983711.034.343812.704.733914.505.164016.505.61由于交聯(lián)聚乙烯絕緣電纜標(biāo)準(zhǔn)僅規(guī)定90絕緣電纜常數(shù)，因此其絕緣電阻、溫度系數(shù)僅供參考。不同型號電纜的20絕緣電阻型號規(guī)格成纜直徑內(nèi)護(hù)套厚度護(hù)套外徑聚乙烯體積電阻率.m20絕緣電阻M.km(R20)YJY228.710KV3*3543.62.548.61*10141727.493*5046.02.551.01642.953*7049.72.554.71527.443*9553.12.558.11432.653*12056.32.561.31353.883*15059.62.564.61283.333*18563.02.568.01215.763*24068.22.573.21126.783*30072.92.577.91055.933*40079.02.584.0977.70絕緣電阻換算溫度系數(shù)（Kt）溫度聚氯乙烯 交聯(lián)聚乙烯100.210.42110.250.46120.290.50