| 导体标称截面积 mm2 |
实心导体或绞合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 | |||||
| 2×0.75 | 1 | 0.6 | 0.9 | 3.8×5.9 | 4.6×7.1 | 24.5 | 24.8 | 0.013 |
| 2×1.0 | 1 | 0.6 | 0.9 | 3.9×6.1 | 4.8×7.4 | 18.1 | 18.2 | 0.012 |
| 2×1.5 | 1 | 0.7 | 0.9 | 4.4×7.0 | 5.3×8.5 | 12.1 | 12.2 | 0.011 |
| 2×2.5 | 1 | 0.8 | 1.0 | 5.1×8.4 | 6.2×10.1 | 7.41 | 7.56 | 0.010 |
| 2×4 | 1 | 0.8 | 1.0 | 5.6×9.2 | 6.7×11.1 | 4.61 | 4.70 | 0.0087 |
| 2×4 | 7 | 0.8 | 1.0 | 5.7×9.5 | 6.9×11.5 | 4.61 | 4.70 | 0.0083 |
| 2×6 | 1 | 0.8 | 1.1 | 6.2×10.4 | 7.5×12.5 | 3.08 | 3.11 | 0.0074 |
| 2×6 | 7 | 0.8 | 1.1 | 6.4×10.8 | 7.8×13.0 | 3.08 | 3.11 | 0.0070 |
| 2×10 | 7 | 1.0 | 1.2 | 7.9×13.4 | 9.5×16.2 | 1.83 | 1.84 | 0.0067 |
| 3×0.75 | 2×0.75 | 0.6 | 0.9 | 3.8×7.9 | 4.6×9.6 | 24.5 | 24.8 | 0.013 |
| 3×1.0 | 2×1.0 | 0.6 | 0.9 | 3.9×8.4 | 4.8×10.1 | 18.1 | 18.2 | 0.012 |
| 3×1.5 | 2×1.5 | 0.7 | 0.9 | 4.4×9.6 | 5.3×11.7 | 12.1 | 12.2 | 0.011 |
| 3×2.5 | 2×2.5 | 0.8 | 1.0 | 5.1×11.6 | 6.2×14.0 | 7.41 | 7.56 | 0.010 |
| 3×4 | 2×4 | 0.8 | 1.0 | 5.6×13.1 | 7.0×15.8 | 4.61 | 4.70 | 0.0087 |
| 3×4 | 2×4 | 0.8 | 1.0 | 5.7×13.5 | 7.1×16.3 | 4.61 | 4.70 | 0.0083 |
| 3×6 | 2×6 | 0.8 | 1.1 | 6.2×14.5 | 7.5×15.7 | 3.08 | 3.11 | 0.0074 |
| 3×6 | 2×6 | 0.8 | 1.1 | 6.4×15.1 | 7.8×18.2 | 3.08 | 3.11 | 0.0070 |
| 3×10 | 2×10 | 1.0 | 1.2 | 7.9×19.0 | 9.5×23.0 | 1.83 | 1.84 | 0.0067 |
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