SPFB Speed Control System Cables
Applications :
- The cables are used for the train speed control system (French system KVB). The cables are laid along railway lines and connect the speed sensors (located between the rails) to the encoder located inside the trackside equipment shelter.
Standards :
- SNCF CT 446
Construction :
- Conductors : Class 2 stranded tinned copper.
- Insulation : Solid polyethylene.
- Cabling Element : Twisted pair.
- Inner Sheath : Low density polyethylene.
- Armour : Galvanized steel braid armour.
- Outer Sheath : Flame Retardant PVC.
Electrical Characteristics at 20 °C :
-
Nominal Conductor Diameter mm 0.8 Nominal Cross Section Area mm2 0.5 Maximum Conductor Resistance (DC) Ω/km 36 Characteristic Impedance @100KHz Ω 120 Maximum Attenuation @50KHz dB/km 5 Nominal Insulation Thickness mm 0.55 Operating Voltage V 500
Mechanical and Thermal Properties :
- Minimum Bending Radius : 8×OD (static); 16×OD (dynamic).
- Temperature Range : -30°C to +70°C (during operation); -20°C +50°C (during installation).
Dimensions and Weight :
Cable Code | No. of cores& Nominal Conductor Cross Sectional Area No.×mm2 |
No. & Nominal Diameter of Strands No/mm |
Nominal Sheath Thickness mm |
Nominal Overall Diameter mm |
Nominal Weight kg/km |
|
Inner | Outer | |||||
RS/SPFB-2Y2Y(SWB)2Y-2C0.5S | 2 x 0.5 | 7/0.32 | 1.0 | 1.5 | 9.1 | 97 |
Flexible |
Ozone Resistant |
Fuel Oil Resistant |
Mineral Oil Resistant |
Laid In Ducts/ Channel |
Flame Retardant NF C32-070-2.1(C2) IEC 60332-1/EN 50265-2-1 |