Contact Us

+852 2116 1040

+86 180 1862 7191

sales@caledonian-cables.com

Quick Contact

Hot

Caledonian

Certificate

  • Caledonian
  • Caledonian
  • Caledonian
  • Caledonian
  • Caledonian

Join the newsletter

Subscribe to get our latest content by email.

    We won't send you spam.

    Unsubscribe at any time.

    MD4 Fire Resisting Telecom Cables (CR1-C1 Class)

    Application

    The cables are telecommunication cables for tunnel application. The cables are halogen free fi re resistant, inductive protected and armoured.

    Standard

    • Fire retardant: NBN C 30-004 F2
    • Fire resistant: NBN 713-020 Add.3. -RF 1h

    Cable Construction

    • Electrical Characteristics at 20℃Conductors: Solid copper conductor, 0.5mm nominal cross section area.
    • Insulation: Mica-tape + LSZH insulation.
    • Cabling Element: Four conductors are twisted to form a quad.
    • Stranding: Quads are helically stranded in concentric layers.
    • Core Wrapping: Plastic tape(s) with overlapping.
    • Inner Sheath: LSZH sheath.
    • Screen: Copper tape screen.
    • Intermediate Sheath: LSZH sheath.
    • Armour: Two layer of steel tape.
    • Outer Sheath: LSZH sheath.
    Nominal Conductor Diameter mm 0.8
    Nominal Cross Section Area mm 0.5
    Nominal Insulation Thickness mm 0.5
    Maximum Conductor Resistance (DC) Ω/km 36.7
    Minimum Insulation Resistance MΩ.km 100
    Maximum Capacitance nF/km 120
    Voltage Test 2 mins KVac 0.5

    Mechanical and Thermal Properties

    • Minimum Bending Radius: 10×OD
    • Temperature Range: -40℃ to +60℃ (during operation); -10℃ +60℃ (during installation)

    Dimensions and Weight

    Cable Code No. of
    Quads
    Nominal Sheath Thickness
    mm
    Nominal Overall
    Diameter
    mm
    Nominal Weight
    kg/km
    Inner Inter. Outer
    0.8mm Conductor, 1.8mm Insulated Wire
    RS/MD4-HH(K)HBH-7Q0.8-FR 7 1.0 1.0 1.8 30.7 1074

     

    Contact Us

    Add the link of current page.

    Clear

    Submit

    Instant Messaging

    WhatsApp :

    +852 6230 0392

    Skype :

    Caledonian Cables

    live:1cb87739a29fb08c

    Wechat :
    The personal information you enter is only used to reply to your message, It will not be leaked or used for other purposes.