TRATOS® XLPE/HDPE
Cathodic Protection Cable

Cross-linked Polyethylene (XLPE) insulated, High density Polyethylene (HDPE) sheathed, single core cable.
Tratos single core XLPE/HDPE unarmoured cable is designed for use as the connecting cable in cathodic protection systems requiring improved water resistance.
Because of its many benefits Cross-linked polythene (XLPE) is now used almost universally as the insulation on LV cables. Polyethylene, which is thermoplastic, is transformed into an elastomeric material (XLPE) by cross-linking which Tratos accomplished by chemical methods. Tratos cross-linked polythene has good mechanical properties and good resistance to abrasion coupled with excellent dielectric properties. Because of its elastomeric nature it withstands high temperatures without melting or excessively deforming. XLPE has higher modulus and strength at elevated temperatures compared to HDPE it also has reduced creep and sensitivity to stress cracking.
Over the XLPE Insulation Tratos extrude a close-fitting sheath of High Density Polyethylene (HDPE). The higher the density of the material the greater the crystallinity and therefore the greater the hardness and stiffness. Primarily HDPE is used as a sheath because of its toughness and excellent water resistance, though it also has good resistance to chemicals, and some solvents. However, it has only moderate resistance to oils and although classed as halogen free has the disadvantage of being flammable. Low temperature performance is very good. Unlike PVC sheathed cables which should not be installed or flexed when the temperature is below 0oC polyethylene sheathed cables can be safely installed at sub-zero temperatures.
Tratos XLPE/HDPE cables offer performance and reliability over an extended lifetime in cathodic protection applications moisture or water are present continually, or for long periods of time. HDPE coverings also provide corrosion protection in installations where this is a problem.

Contact us:
Tel: +44 20 3148 5178
e-mail: sales@tratosgroup.com
Please don’t hesitate to contact us if you need additional information about our products.
Application
Tratos Cathodic Protection Cables are single conductor cables that are intended to carry a DC current to anodes and cathodes in a cathodic protection system. Tratos Cathodic Protection Cables are designed for use in both active and passive cathodic protection systems to eliminate and prevent corrosion in Metals. Tratos Cathodic Protection Cables are used to eliminate and prevention the corrosion of steel pipelines and steel storage tanks, offshore oil and gas installations, offshore wind farms, ships and other maritime applications installed in air or water. Tratos XLPE/HDPE Cathodic Protection Cables are intended for installation in applications where there is a medium risk of mechanical damage, but improved water and chemical resistance is required. Cables sheath with HDPE sheaths are also easier to install and terminate than those sheathed with XLPESpecifications
- Conductors: Plain annealed copper conductors – BS EN 60228 Class 2
- Insulation: Cross-linked polythene (XLPE)
- Sheath: High-Density Polyethylene (HDPE).
- Standard size range: 10mm2 to 50mm2 (up to 400mm2 available on request)
- Standard colours are RED and BLACK
Standards
Technical Specifications
- Minimum ambient air temperature -55 oC
- Maximum continuous conductor temperature +90 oC
Minimum bending radius – Fixed Installation:
- ≤ 25mm 4D
- >25mm 6D
Maximum allowable pulling tension:
- 50N/mm2 during installation
- 15N/mm2 in service
Additional Information
CONDUCTOR – Material: Compacted tinned annealed Cu
Nominal CSA | Nominal Diameter | Max. resistance 20oC |
mm2 | mm | Ω/km |
10 | 3.8 | 1.84 |
16 | 4.65 | 1.16 |
25 | 5.83 | 0.734 |
35 | 6.8 | 0.529 |
50 | 8 | 0.391 |
Nominal CSA | Nominal Diameter | Max. resistance 20oC |
mm2 | mm | Ω/km |
10 | 3.8 | 1.84 |
25 | 5.83 | 0.734 |
35 | 6.8 | 0.529 |
50 | 8 | 0.391 |
INSULATION – Material: XLPE
Nominal thickness | Nominal Diameter |
mm | mm |
0.7 | 5.2 |
0.7 | 6.05 |
0.9 | 7.63 |
0.9 | 8.6 |
1.0 | 10.0 |
Nominal thickness | Nominal Diameter |
mm | mm |
0.5 | 5.2 |
0.5 | 6.05 |
0.5 | 7.63 |
0.5 | 8.6 |
0.5 | 10.0 |
OUTER SHEATH – Material: Polyethylene (HDPE)
Nominal thickness | Nominal Diameter | Nominal weight |
mm | mm | kg/km |
1.4 | 8.0 | 155 |
1.4 | 8.85 | 220 |
1.4 | 10.4 | 310 |
1.4 | 11.4 | 405 |
1.4 | 12.8 | 525 |
Nominal thickness | Nominal Diameter | Nominal weight |
mm | mm | kg/km |
1.4 | 8.0 | 155 |
1.4 | 8.85 | 220 |
1.4 | 10.4 | 310 |
1.4 | 11.4 | 405 |
1.4 | 12.8 | 525 |
Contact us
Please, don’t hesitate to contact us for additional information on our company or our products.
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