HELUWIND® WK 137 EMV D-Torsion FT4

0,6/1 kV, 90°C (80°C acc. to UL), suitable offshore, screened,
UV resistant, UL/CSA-Style 10553/20234 Single-/Multicore

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Technical data
  • Temperature range
    flexing -40°C to +90°C
    fixed installation -40°C to +90°C
    acc. to UL to +80°C
  • Permissible conductor operating
  • Nominal voltage
    VDE U0/U 0,6/1 kV
    UL 1000 V
  • Test voltage
    core/core 4000 V
  • core/screen 2000 V
  • Highest permissible voltage
    - DC:
       Conductor/Conductor 1,8 kV
       Conductor/Earth 0,9 kV
    - AC: Conductor/Earth 0,7 kV
    - Three phase: Conductor/Conductor 1,2 kV
  • Minimum bending radius
    flexing 10x cable Ø
    fixed installation 5x cable Ø
  • Torsion application
    +/- 150° per 1m
  • Approvals
    Singlecore UL Style 10553
    Multicore UL Style 20234
  • Flame test
    FT4, IEC 60332-3-24
    UL 758, Cable flame test
  • Halogen-free
    IEC 60754-1
  • Smoke density
    IEC 61034-1+2
  • Oil
    acc. to oil res II
  • WTTC in preparation
Cable structure
  • Special bare copper conductor,
    acc. to IEC 60228
  • Insulation: special compound
  • Core identification: see table
  • Multiconductors cabled
  • EMC-screened types have tinned
    copper wrapping
  • Sheath: special compound SSH
  • Sheath colour: black
  • Halogen-free
  • Extremely abrasion resistant
  • Low adhesion
  • High flame retardant
  • Torsion tested
  • Suitable for offshore applications
  • Extremely oil resistant
  • UV resistant
  • Multi-climate operation
  • Designed for CCV application
  • Easy to assemble
For more information, especially on
custom cables, please contact us:
The WK 137 EMV D-Torsion FT4 has been designed for flexible use, and specifically for torsional load in the cable loop of a wind power plant. The voltage level has been configured as 0.6/1 kV for all dimensions, which means that the cables can also be laid in parallel in compliance with UL standards. It is no longer necessary to separate the cable routes. Additionally, this cable meets the strict requirements of CSA flame test FT4 and, thanks to its highly durable sheath and absence of halogen, is ideal for use in offshore wind power plants. The WK series has been successfully tested for more than 18,000 torsion cycles and thus offers optimum operational reliability far beyond the service life of the wind power plant. Advantages of WK 137-Torsion over H07BN4-F: Fire behaviour in accordance with IEC 60332-3-24 and FT4, increased wear resistance.
EMC = Electromagnetic compatibility
To optimize the EMC features we recommend a large round contact of the copper wrapping on both ends.
CE = Product conforms with Low-Voltage Directive 2014/35/EU.