| 导体标称截面积 mm2 |
导体中单线最少根数 | 绝缘厚度规定值 mm |
护套厚度规定值 mm |
平均外径mm | 20℃时导体电阻 最大值Ω/km |
70℃时绝缘 电阻最小值 MΩ·km |
||
| 下限 | 上限 | 铜芯 | 镀锡铜芯 | |||||
| 0.75 | 1 | 0.6 | 0.8 | 3.6 | 4.4 | 24.5 | 24.8 | 0.013 |
| 1.0 | 1 | 0.6 | 0.8 | 3.7 | 4.5 | 18.1 | 18.2 | 0.012 |
| 1.5 | 1 | 0.7 | 0.8 | 4.2 | 5.0 | 12.1 | 12.2 | 0.011 |
| 1.5 | 7 | 0.7 | 0.8 | 4.3 | 5.2 | 12.1 | 12.2 | 0.011 |
| 2.5 | 1 | 0.8 | 0.8 | 4.8 | 5.7 | 7.41 | 7.56 | 0.010 |
| 2.5 | 7 | 0.8 | 0.8 | 4.8 | 5.9 | 7.41 | 7.56 | 0.010 |
| 4 | 1 | 0.8 | 0.9 | 5.4 | 6.5 | 4.61 | 4.70 | 0.0087 |
| 4 | 7 | 0.8 | 0.9 | 5.5 | 6.8 | 4.61 | 4.70 | 0.0083 |
| 6 | 1 | 0.8 | 0.9 | 5.9 | 7.1 | 3.08 | 3.11 | 0.0074 |
| 6 | 7 | 0.8 | 0.9 | 6.0 | 7.3 | 3.08 | 3.11 | 0.0070 |
| 10 | 7 | 1.0 | 0.9 | 7.3 | 8.8 | 1.83 | 1.84 | 0.0067 |
| 16 | 19 | 1.0 | 0.9 | 8.2 | 9.9 | 1.15 | 1.16 | 0.0057 |
| 25 | 7 | 1.2 | 1.0 | 10.0 | 12.1 | 0.727 | 0.734 | 0.0054 |
| 35 | 7 | 1.2 | 1.1 | 11.1 | 13.5 | 0.524 | 0.529 | 0.0047 |
| 50 | 19 | 1.4 | 1.4 | 13.1 | 15.8 | 0.387 | 0.391 | 0.0047 |
| 70 | 19 | 1.4 | 1.4 | 14.8 | 17.9 | 0.268 | 0.270 | 0.0040 |
| 95 | 19 | 1.6 | 1.5 | 17.0 | 20.5 | 0.195 | 0.320 | 0.0039 |
| 120 | 37 | 1.6 | 1.6 | 18.6 | 22.5 | 0.154 | 0.253 | 0.0035 |
| 150 | 37 | 1.8 | 1.8 | 20.7 | 25.1 | 0.126 | 0.206 | 0.0035 |
| 185 | 37 | 2.0 | 1.9 | 22.9 | 27.7 | 0.100 | 0.164 | 0.0035 |
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