電纜主要技術(shù)性能 Major technical performances
1、電纜導體直流電阻及固有衰減 DC resistance of the conductor and Intrinsic attenuation
型 號
Model |
20℃時導體直流電阻
DC resistance of conductor at 20℃ ≤Ω ( , /km) |
固有衰減(800Hz)
Intrinsic attenuation ≤( ,dB/km) |
MHYV
|
45
|
1.10
|
MHJYV
|
73
|
1.30
|
MHYBV MHYAV MHYA32
|
36.7
|
0.95
|
2、電纜其它主要技術(shù)性能 Other major technical performances
( MHYV、MHJYV、MHYBV MHYAV、MHYA32)
序 號
Serial number |
項目
Items |
技術(shù)性能
Technical performances |
1
|
+20℃線芯直流電阻(≤Ω/Km) Line core DC resistance at 20℃ |
見上表 See above table |
2
|
電纜固有衰減(≤dB/Km) Cable intrinsic attenuation |
見上表 See above table |
3
|
+20℃絕緣電阻(≥MΩ Km) Insulating resistance at 20℃ | 3000 |
4
|
lmin工頻交流電壓試驗 lmin power frequency alternating current pressure test |
1500V不擊穿(50Hz) 1500V Does not penetrate |
5
|
遠端串音衰減(≥dB/500) Far-end crosstalk attenuation |
70(800Hz) |
6
|
電感(≤μH/Km) Inductance |
800(800Hz) |
7
|
電纜工作電容(≤μF/Km) Cable service capacity |
0.06(800Hz) |
8
|
工作對直流電阻差(≤%環(huán)阻) DC resistance difference |
2 |
9
|
單根垂直燃燒試驗 Combustion for single cable test |
MT386 |
10
|
成束燃燒試驗 Combustion for bunched cable test |
符合GB/T18380標準中B類成束燃燒試驗要求 Conforms to GB/T18380 standard B kind becomes ties the burning test |