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    WTB (Wired Train Bus)/MVB (Multifunction Vehicle Bus) Cables

    Application

    The cables are used as connecting cables to transmit digital signals inside railway rolling stocks. The communication system in a locomotive uses a wire backed bus system to the TCN standard for control and instrumentation and for diagnostics. This bus system consists of the rail bus WTB (Wired Train Bus) and the road bus MVB (Multifunction Vehicle Bus) which are connected via redundant gateways.

    Standard

    • DIN 5510-2

    Cable Construction

    Electrical Characteristics at 20℃

    Conductor Stranded tinned copper conductor according to IEC 60228 class 5
    Insulation Foam skin-composite PE made of inner cellular layer and outer solid skin
    Cable Element Twisted pair
    Core Wrapping Plastic tape(s)
    EMC Screen1 Aluminium clad polyester foil
    EMC Screen2 Tinned copper braid
    Core Wrapping Plastic tape(s)
    Outer Sheath Cross-linked oil resistant LSZH compound

     

    Nominal Cross Section/AWG mm 0.62/20
    Maximum Conductor Resistance Ω/km 33.1
    Impedance@0.5-2MHz Ω 120+/-12
    Maximum Attenuation @1MHz dB/km 10
    Maximum Attenuation @2MHz dB/km 15
    Nominal Voltage Rating V 300

    Mechanical and Thermal Properties

    • Minimum Bending Radius: 6×OD (single); 12×OD (multiple)
    • Temperature Range: -40℃ to +100℃ (during operation); -20℃ +50℃ (during installation)

    Dimensions and Weight

    Cable Code No. of cores& Nominal
    Conductor Cross
    Sectional Area
    No.×mm
    Nominal
    Diameter of
    Strands
    No/mm
    Nominal
    Sheath
    Thickness
    mm
    Nominal
    Overall
    Diameter
    mm
    Nominal
    Weight
    kg/km
    RD-WTB/MVB--02YS(ST+C)H-1P20A 1×2×0.62 19/0.2 1.2 8.3 80

     

     

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