导体标称截面积mm2 | 绞合导体中单丝最少根数 | 绝缘厚度规定值mm | 平均外径 上限mm |
20℃时导体电阻最大值Ω/km | 70℃时绝缘电阻 最小值MΩ·km |
|
铜芯 | 镀锡铜芯 | |||||
2.5 | 19 | 0.8 | 4.1 | 7.41 | 7.56 | 0.010 |
4 | 19 | 0.8 | 4.8 | 4.61 | 4.70 | 0.0079 |
6 | 19 | 0.8 | 5.3 | 3.08 | 3.11 | 0.0068 |
10 | 49 | 1.0 | 7.3 | 1.83 | 1.84 | 0.0066 |
16 | 49 | 1.0 | 8.6 | 1.15 | 1.16 | 0.0054 |
25 | 98 | 1.2 | 10.2 | 0.727 | 0.734 | 0.0051 |
35 | 133 | 1.2 | 11.7 | 0.524 | 0.529 | 0.0043 |
50 | 133 | 1.4 | 13.9 | 0.387 | 0.391 | 0.0042 |