序 号 Serial number | 项目 Items | 技术性能 Technical performances |
1 | +20℃线芯直流电阻(≤Ω/Km) Line core DC resistance at 20℃ | 见上表 See above table |
2 | 电缆固有衰减(≤dB/Km) Cable intrinsic attenuation | 见上表 See above table |
3 | +20℃绝缘电阻(≥MΩ Km) Insulating resistance at 20℃ | 3000 |
4 | lmin工频交流电压试验 lmin power frequency alternating current pressure test | 1500V不击穿(50Hz) 1500V Does not penetrate |
5 | 远端串音衰减(≥dB/500) Far-end crosstalk attenuation | 70(800Hz) |
6 | 电感(≤μH/Km) Inductance | 800(800Hz) |
7 | 电缆工作电容(≤μF/Km) Cable service capacity | 0.06(800Hz) |
8 | 工作对直流电阻差(≤%环阻) DC resistance difference | 2 |
9 | 单根垂直燃烧试验 Combustion for single cable test | MT386 |
10 | 成束燃烧试验 Combustion for bunched cable test | 符合GB/T18380标准中B类成束燃烧试验要求 Conforms to GB/T18380 standard B kind becomes ties the burning test |