Home >> Product >> Railway Cable >> Railway Telecom CableG7621 Trackside Communications Cables
Applications :
- The cables are designed for installation in trackside bracket runs and for use in open locations (type1) or in tunnels or underground locations (type2).
Standards :
- LUL Spec G7621 A2 type 1 (for PVC sheath)
- LUL Spec G7621 A2 type 2 (for LSZH sheath)
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Construction :
- Conductors : Solid plain copper, 0.63/0.9 mm nominal diameter.
- Insulation : Cellular polyethylene.
- Cabling Element : Two insulated conductors are twisted together to form a pair.
- Core Wrapping : Non-hygroscopic plastic tape with overlapping.
- Outer Sheath : PVC/LSZH sheath, coloured violet.
Core Identification :
- 1 Pair Cable : Blue/White
- 3 Pair Cable : Blue/White Orange/White Green/White
Electrical Characteristics at 20 °C :
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Nominal Conductor Diameter mm 0.63 0.9 Maximum Conductor Resistance Average Value Ω/km 57.5 28 Individual Value Ω/km 59 29 Minimum Insulation Resistance @500 V DC MΩ.km 1500 1500 Maximum Average Mutual Capacitance nF/km 59 59 Maximum Average Capacitance Unbalance Pair to Pair pF/460m 100 100 Pair to Earth pF/460m 1200 1200
Mechanical and Thermal Properties :
- Minimum Bending Radius : 7.5×OD.
- Temperature Range : -30°C to +70°C (during operation); -10°C +55°C (during installation).
Dimensions and Weight :
| Cable Code | No. of pairs | Nominal Thickness of Sheath mm |
Nominal Overall Diameter mm |
Nominal Weight kg/km |
| 0.63mm Conductor, 1.15mm Insulated Wire | ||||
| RS7621A2/T1-02YY-1P0.63 | 1 | 2.5 | 7.0 | 60 |
| RS7621A2/T1-02YY-3P0.63 | 3 | 2.5 | 9.0 | 90 |
| 0.9mm Conductor, 1.5mm Insulated Wire | ||||
| RS7621A2/T1-02YY-1P0.9 | 1 | 2.5 | 8.0 | 70 |
| RS7621A2/T1-02YY-3P0.9 | 3 | 2.5 | 10.0 | 120 |
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Mineral Oil Resistant |
Rated voltage |
Buried in Ciround |
Laid In Ducts |
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PVC Sheath |
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LSZH Sheath |
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