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 |