Home >> Product >> BS 7211 LSOH Sheathed Cables
H05Z-U/H07Z-U

Application and Description :

  • These cables are designed for the internal wiring of switchboards and distributor boards with an alternating nominal voltage up to 1000 Volts or a direct voltage up to 750 volts. Generally install in pipes or ducts and internal wiring of appliances with maximum operating temperature of 90º C, and generally in areas (such as public and government buildings) where smoke and toxic fumes may cause a threat to life and equipment. The cables produce no corrosive gasses when burnt which is particularly important where electronic equipment is installed.

Cable Construction :

  • - Solid bare copper


    - single wire to IEC 60228 Cl-1


    - Cross-link polyolefin EI5 core insulation


    - LSOH - low smoke, zero halogen

Insulation Colour :

  • Green/Yellow, Black, Blue, Brown, Red, White, Yellow, Grey, Violet

Technical Characteristics :

  • - Working voltage: 300/500v (H05Z-U), 450/750v (H07Z-U)
  • - Test voltage: 2000 / 2500 volts
  • - Flexing bending radius: 15 x Ø
  • - Static bending radius: 10 x Ø
  • - Flexing temperature: +5º C to +90º C
  • - Short circuit temperature: +250º C
  • - Insulation resistance: 10 MΩ x km
  • - Flame retardant: IEC 60332.1
  • - Smoke density acc. to EN 50268 / IEC 61034
  • - Corrosiveness of combustion gases acc. to EN 50267-2-2, IEC 60754-2
  • - Flame test: flame-retardant acc. to EN 50265-2-1, IEC 60332.1

Cable Parameter :

  • AWG No. of Cores x Nominal Cross Sectional Area Nominal Thickness of Insulation Nominal Overall Diameter Nominal Copper Weight Nominal Weight Minimum insulation resistance at 90 °C
    # x mm² mm mm kg/km kg/km MΩ·km
    H05Z-U
    20 1 x 0.5 0.6 1.9-2.4 4.8 8 0.015
    18 1 x 0.75 0.6 2.1-2.6 7.2 12 0.012
    17 1 x 1 0.6 2.2-2.8 9.6 14 0.011
    H07Z-U
    16 1 x 1.5 0.7 2.6-3.3 14.4 20 0.011
    14 1 x 2.5 0.8 3.2-4.0 24 30 0.010
    12 1 x 4 0.8 3.6-4.6 38 45 0.0085
    10 1 x 6 0.8 4.1-5.2 58 65 0.0070
    8 1 x 10 1.0 5.3-6.6 96 105 0.0070