450/750V《YC-J电缆 天车钢丝电缆》
对数×根数×导体直径 | MHYJV(HUYJV) | MHYV(HUVV) | MHYV32(HUVV32) |
1×2×0.8 | - | 9 | - |
3×2×0.8 | - | 10 | - |
5×2×0.8 | 14 | 15 | - |
7×2×0.8 | - | 16 | 17 |
10×2×0.8 | 16 | 19 | - |
14×2×0.8 | - | 21 | 23 |
20×2×0.8 | 20 | 24 | 28 |
30×2×0.8 | 24 | 29 | 32 |
50×2×0.8 | 29 | 36 | 44 |
项目 | 单位 | 7/0.28 | 7/0.28 | 1/0.8 | 1/0.8 | 1/0.8 | |
20℃时导体直流电阻 | Ω/km | ≤45 | ≤73 | ≤36.7 | ≤36.7 | ≤36.7 | |
固有衰减(800~1000HZ) | dB/km | ≤1.1 | ≤1.3 | ≤0.95 | ≤0.95 | ≤0.95 | |
20℃时电缆绝缘线芯绝缘电阻 | MΩ.km | ≥3000 | |||||
线对工作电容(800~1000HZ) | uF/km | ≤0.06 | |||||
近端串音衰减(800~1000HZ) | dB/500m | ≥70 | |||||
电感(800~1000HZ) | uH/km | ≤800 | |||||
耐交流工频电压 | - | 1.5KV/1min通过 | |||||
直流电阻差 | - | ≤环阻的2%
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