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YTTW防火电缆技术参数表
标称 | 绝缘标称厚度 | 20℃导 体电阻 不大于 | 金属护套厚度 mm | 20℃铜护套计算电阻值 Ω/km | 电缆外径 mm | |||||||||
1芯 | 2芯 | 3芯 | 4芯 | 1芯 | 2芯 | 3芯 | 4芯 | 1芯 | 2芯 | 3芯 | 4芯 | |||
1 | 0.8 | 18.1 | 0.4 | 0.5 | 0.5 | 0.5 | 4.63 | 2.20 | 0.28 | 1.90 | 3.53 | 5.66 | 5.96 | 6.46 |
1.5 | 0.8 | 12.1 | 0.4 | 0.5 | 0.5 | 0.5 | 4.19 | 2.00 | 1.89 | 1.73 | 3.78 | 6.16 | 6.50 | 7.06 |
2.5 | 0.8 | 7.41 | 0.4 | 0.5 | 0.6 | 0.6 | 3.75 | 1.75 | 1.36 | 1.24 | 4.18 | 6.96 | 7.56 | 8.23 |
4 | 0.8 | 4.61 | 0.5 | 0.6 | 0.6 | 0.6 | 2.61 | 1.26 | 1.18 | 1.08 | 4.85 | 8.10 | 8.57 | 9.36 |
6 | 0.8 | 3.08 | 0.5 | 0.6 | 0.6 | 0.6 | 2.33 | 1.11 | 1.04 | 0.945 | 5.36 | 9.12 | 9.67 | 10.59 |
10 | 1.0 | 1.83 | 0.5 | 0.7 | 0.7 | 0.7 | 1.74 | 0.689 | 0.646 | 0.586 | 7.02 | 12.44 | 13.22 | 14.52 |
16 | 1.0 | 1.15 | 0.6 | 0.7 | 0.7 | 0.8 | 1.19 | 0.570 | 0.55 | 0.432 | 8.24 | 14.48 | 15.42 | 17.18 |
25 | 1.0 | 0.727 | 0.6 | 0.8 | 0.8 | 0.9 | 1.05 | 0.429 | 0.401 | 0.32 | 9.56 | 17.32 | 18.46 | 20.57 |
35 | 1.0 | 0.524 | 0.6 | 0.8 | 0.8 | 1.0 | 0.935 | 0.377 | 0.141 | 0.28 | 10.90 | 19.90 | 21.43 | 23.86 |
50 | 1.2 | 0.387 | 0.7 | 0.9 | 0.9 | 1.0 | 0.68 | 0.285 | 0.266 | 0.215 | 12.60 | 23.00 | 24.55 | 27.34 |
70 | 1.2 | 0.268 | 0.7 | 1.0 | 1.0 | 1.0 | 0.591 | 0.22 | 0.205 | 0.185 | 14.40 | 23.80 | 28.63 | 31.69 |
95 | 1.2 | 0.193 | 0.8 | 1.0 | 1.0 | 1.0 | 0.451 | 0.191 | 1.79 | 0.161 | 16.50 | 30.60 | 32.72 | 36.72 |
120 | 1.4 | 0.153 | 0.8 | 1.0 | 1.0 | 1.1 | 0.408 | 0.172 | 0.161 | 0.131 | 18.14 | 33.88 | 36.26 | 40.43 |
150 | 1.4 | 0.124 | 0.8 | 1.0 | 1.0 | 1.1 | 0.366 | 0.154 | 0.131 | 0.117 | 20.15 | 37.70 | 40.56 | 45.00 |
185 | 1.4 | 0.0991 | 0.9 | 1 | 1 | 1.2 | 0.297 | 0.141 | 0.119 | 0.098 | 22.10 | 41.20 | 44.33 | 49.42 |
240 | 1.4 | 0.0754 | 0.9 | 1 | 1 | 1.2 | 0.263 | 0.124 | 0.104 | 0.086 | 24.69 | 46.38 | 50.22 | 55.83 |
300 | 1.6 | 0.0601 | 1 | - | - | - | 0.212 | - | - | - | 27.70 | - | - | - |
400 | 1.6 | 0.0470 | 1 | - | - | - | 0.193 | - | - | - | 30.40 | - | - | - |