电线电缆载流量修正系数.pdf

《电线电缆载流量修正系数.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、电线电缆载流量修正系数页码，1/3空气中不同环境温度下载流量修正系数环境温度（ºC）（空气中）导体工作温度（ºC）101520253035404550501.701.621.521.421.321.221.000.75-601.581.501.411.321.221.111.000.860.73651.481.411.341.261.181.091.000.890.77701.411.351.291.221.151.081.000.910.81801.321.271.221.171.111.061.00

2、0.930.86901.261.221.181.141.091.041.000.940.89土壤不同环境温度下载流量修正系数环境温度（ºC）（土壤中）导体工作温度（ºC）101520253035501.261.181.101.000.890.77601.201.131.071.000.930.85651.171.121.061.000.940.88701.151.111.051.000.940.88801.131.091.041.000.950.90901.111.071.041.000.960.92电

3、缆在空气中并列敷设时载流量修正系数载流量修正系数根数12346468912中心距离SS=1d0.900.800.820.800.82----S=2d1.001.000.900.950.900.950.800.850.800.80S=3d1.000.980.980.960.980.900.900.850.85不同土壤热阻系数的载流量修正系数土壤热阻系数ρ=(ºC-M/W)电压截面范围T（KV）（mm2）0.81.01.21.51.82.0.53.035及以下1.061.000.950.890.840.81

4、0.750.7150~12011.081.000.940.870.800.770.700.65150~3001.081.000.930.860.790.760.690.64400及以1.091.000.930.850.790.760.680.63上mk:@MSITStore:E:学习资料ElecBook天正电气规范在线查询.chm::/载流...2012-12-21电线电缆载流量修正系数页码，2/335及以下1.051.000.950.900.840.820.760.7050~120101.061.

5、000.940.880.820.800.730.68150~3001.071.000.940.870.810.780.710.66400及以1.071.000.930.870.810.770.710.65上多根电线穿管敷设于空气中载流量修正系数穿管根数修正系数2~40.805~80.609~120.5012以上0.45注：1、穿管电缆根数系指有负荷且发热的导线根数。中性线或保护线可不计。      2、一般情况下，穿管根数体积占管内体积的40%左右。                          多

6、根电线管空气中并行敷设载流量修正系数管子并列根数修正系数2~40.954根以上0.9          电缆直埋多根平行敷设修正系数组数电缆间距23456相互接触0.790.670.630.580.5570~100(mm)0.850.750.680.640.60200~250(mm)0.870.970.750.730.69电缆在桥架上无间距排列多层并列载流量修正系数叠置电缆层数水平排列1234梯架0.800.650.550.50托盘0.700.550.500.45                    

7、       不同埋地深度时载流量修正系数电压（KV）深度L（mm）修正系数L=7001.001.00700

8、                             电缆敷设在电缆槽盒修正系数电缆根数23456~78~1011~1415~20修正系数0.800.700.650.600.550.500.450.40mk:@MSITStore:E:学习资料ElecBook天正电气规范在线查询.chm::/载流...2012-12-21