Multi Layer Sheath Cable

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Multi Layer Sheath Cable

Multi Layer Sheath Cable

Product Specification


Nuhas Oman Multi-layer sheathed (AL-HDPE-PA) cable has been tested by ISO 17025 accredited independent cable test laboratory for resistance to various fluids which are representative of the worst possible combination of solvents likely to be encountered in cable applications as per BS EN 50289-4-4.

An alternative to lead sheath is a triple layer sheath comprising

a) A longitudinal laminated aluminium foil bonded with

b) Extruded Polyethylene (HDPE) layer and

c) Extruded Polyamide layer

The above alternative has the same functionality as the lead sheath. The laminated Aluminium tape layer prevents ingress of water. The PE sheath provides the resistance to inorganic chemicals such as acids, bases, inorganic salts and the PA layer acts as a barrier against organic materials such as aliphatic and aromatic hydrocarbons, petrol, oil etc. The combinations of these three sheaths are an adequate alternative to lead sheaths for a large number of applications. Additionally, the Al+PE+PA sheath makes the cables lighter in weight and of reduced diameter making it easier to transport, handle and install.

*PVC or Rubber (EPR) insulated cables can be manufactured on request.

**Special PVC outer sheaths can be provided on request to incorporate below properties,


  • Annealed Plain Copper Conductor
  • XLPE Insulation*
  • Individual or Overall Screened with Drain wire - for Instrumentation cables
  • Longitudinal overlapped Aluminium foil with extruded layer of HDPE & Polyamide (Nylon) covered multi-layer sheath
  • Armoured or Unarmoured
  • PVC Outer Sheath**

Applicable Standards

  • IEC 60502‐1 for 600/1000 V & BS EN 50288-7 for 300/500 V

Operating Temperature

  • 90°C / 250°C


  • Flame retardant to IEC 60332‐1

Type Tested By

  • KEMA


  • Production of cables with triple layer sheath requires careful processing requiring special compounds, additives and suitable production equipment. Nuhas Oman has carried extensive trials and successfully produced cables with multi-layer extruded sheath. Nuhas Oman has successfully supplied substantial quantities to Oil & Gas sector.

Rated Voltage

  • 0.6/1.0 (1.2) kV
  • 1.8/3 (3.6) kV
  • 300/500 V

Product Range

  • 1 core – 50 to 1000 mm2
  • 2 core & 5 core – 1.5 to 120 mm2
  • 3 core & 4 core – 1.5 to 400 mm2
  • Above 5 core to 48 Cores – 1.5 to 4 mm2
  • for Instrumentation cables :-
  • 1 core to 48 cores – 0.5 to 2.5 mm2
  • 1 pair to 32 pairs – 0.5 to 2.5 mm2
  • 1 triad to 20 triads – 0.5 to 2.5 mm2
  • 1 triad to 20 triads – 0.5 to 2.5 mm2