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    G7621 Trackside Communications Cables

    • G7621 Trackside Communications Cables
    • G7621 Trackside Communications Cables

    Application

    The cables are designed for installation in trackside bracket runs and for use in open locations (type1) or in tunnels or underground locations (type2).

    Standard

    • LUL Spec G7621 A2 type 1 (for PVC sheath)
    • LUL Spec G7621 A2 type 2 (for LSZH sheath)

    Cable Construction

    • Core IdentificationConductors: 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.
    • 1 Pair Cable: Blue / White
    • 3 Pair Cable: Blue / White; Orange / White; Green / White

    Electrical Characteristics at 20℃

    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℃ to +70℃ (during operation); -10℃ +55℃ (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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