Railway Digital Signal Cable SPTYWPA23
Railway Digital Signal Cable SPTYWPA23
SPTYWPA23
It is fit for railway signal and digital signal transmission in high speed railway
Copper cable is used as signal transmission especial for railway.
Long term operation temperature: no more than 70 centigrade; Environmental temperature: -40°C to +60°CInstallation temperature: not lower than -10°C; Bend radius when installation:Not smaller than 10 times of cable outer diameter for the non-armored cable;Not smaller than 15 times of cable outer diameter for the armored cable;Ideal shield constant of Al-PE composite sheath cable is not more than 0.8;Ideal shield constant of Al sheath cable is not more than 0.2
SPTYWA23 SPTYWPA23 SPTYWL23 SPTYWPL23 Electrical parameter
No | Item | Unit | Value | Conversion formula |
1 | D.C Resistance at 20°C D.C Resistance of each conductor conductor balance of quad pairs |
Ω/km % |
23.5±1.0 ≤1.0 |
L/1000 — |
2 | Resistance | MΩ·km | ≥10000 | 1000/L |
3 | nF/km Working capacitance Star quad pairs working capacitance Shield Star quad pairs twin pair working capacitance Capacitance between each insulated core and others connected to earth | nF/km |
28±3
28±2 ≤50 ≤70 | L/1000 |
4 | Capacitance coupling K1 Average value Maxium value | pF/km |
≤81 ≤330 |
L/1000 |
5 | Capacitance imbalance to the earth ea1,ea2 Average value ea1,ea2 Maxium value ea1,ea2 ea1,ea2 means the maxium value for the for core cable | pF/500m |
≤300 ≤800 | L/1000 |
Railway Digital Signal Cable SPTYWPA23
