导体标称截面积 (mm2) | 导体内最大单线直径(mm) | 导体结构(根数/单丝直径mm) | 绝缘厚度规定值(mm) | 外形尺寸(mm) | 20℃时导体电阻最大值(Ω/km) | 70℃时绝缘电阻最小值(MΩ·km) | |||||
平均外径 | 下限 | 上限 | 铜芯 | 镀锡铜芯 | |||||||
1.5 | 0.26 | 48/0.20 | 0.7 | 3.03 | 2.8 | 3.4 | 13.3 | 13.7 | 0.010 | ||
2.5 | 0.26 | 77/0.20 | 0.8 | 3.70 | 3.4 | 4.1 | 7.98 | 8.21 | 0.009 | ||
4 | 0.31 | 56/0.30 | 0.8 | 4.30 | 3.9 | 4.8 | 4.95 | 5.09 | 0.007 | ||
6 | 0.31 | 84/0.30 | 0.8 | 4.90 | 4.4 | 5.3 | 3.30 | 3.39 | 0.006 | ||
10 | 0.41 | 144/0.30 | 1.0 | 6.70 | 5.7 | 6.8 | 1.91 | 1.95 | 0.0056 | ||
16 | 0.41 | 126/0.40 | 1.0 | 7.70 | 6.7 | 8.1 | 1.21 | 1.24 | 0.0046 | ||
25 | 0.41 | 196/0.40 | 1.2 | 9.90 | 8.4 | 10.2 | 0.78 | 0.795 | 0.0044 | ||
35 | 0.41 | 276/0.40 | 1.2 | 11.50 | 9.7 | 11.7 | 0.554 | 0.565 | 0.0038 | ||
50 | 0.41 | 399/0.40 | 1.4 | 13.40 | 11.5 | 13.9 | 0.386 | 0.393 | 0.0037 | ||
70 | 0.51 | 551/0.40 | 1.4 | 15.40 | 13.2 | 16.0 | 0.272 | 0.277 | 0.0032 | ||
95 | 0.51 | 475/0.50 | 1.6 | 17.70 | 15.1 | 18.2 | 0.206 | 0.210 | 0.0032 | ||
120 | 0.51 | 608/0.50 | 1.6 | 19.50 | 16.7 | 20.2 | 0.161 | 0.164 | 0.0029 |