FR-N20XA8E-R 12/20kV Cable Gen to NF C 33-226 - Cu/XLPE/MDPE
The FR-N20XA8E-R Triplex 12/20kV Cable is a high-performance triplex medium-voltage cable manufactured to NF C 33-226 standard for efficient and reliable power distribution. It features three stranded copper conductors (Cu) for superior conductivity, semi-conductive conductor screens, high-quality XLPE (cross-linked polyethylene) insulation for excellent dielectric strength and thermal stability (90°C continuous, 250°C short-circuit), semi-conductive insulation screens, copper wire screens for grounding and protection, and a robust medium-density polyethylene (MDPE) outer sheath providing superior mechanical protection, moisture resistance, UV stability, and chemical resistance. The triplex configuration (three cores twisted together) facilitates easy installation in overhead aerial bundled systems or underground ducts. Compliant with French NF C 33-226 and relevant IEC standards, it offers low dielectric losses, high current-carrying capacity, and long service life in demanding environments. The FR-N20XA8E-R is ideal for MV overhead lines, underground distribution, rural electrification, and urban networks requiring durable, weather-resistant triplex cable.
- Voltage Rating(Uo/U) 12/20 (24)kV
- Maximum operating temp 90°C
- Initial temp at S.C.C 80°C
- Maximum temp during S.C 250°C
- Minimum Bending Radius 20 x overall diameter
Construction
Technical Specifications
Quality Control
Application
Construction
FR-N20XA8E-R 12/20kV Cable Constrution
Conductor
Class 2 stranded Aluminium
Conductor Screen
Extruded Inner Semi Conductor (Bonded Type)
Insulation
XLPE (Cross-Linked Polyethylene)
Insulation Screen
Extruded Inner Semi Conductor (Strippable Type)
Waterblocking
Semi Conductive Longitudinal Waterblocking Tape
Aluminium Tape
Applied Longitudinally
Sheath
MDPE (Medium Density Polyethylene)
Sheath Colour
Black
Manufacturer Standard
NF C 33-226, IEC 60502-2, EN 60228
Halogen free
IEC/EN 60754-1
Water resistant
AD7
UV resistant
ISO 4892
Technical Specifications
FR-N20XA8E-R 12/20kV Cable Gen to NF C 33-226 - Cu/XLPE/MDPE
FR-N20XA8E-R 12/20kV Cable Data Sheet
| No. Of Cores |
Nominal Cross Sectional Area |
Nominal Conductor Screen Thickness |
Nominal Insulation Thickness |
Nominal Sheath Thickness |
Nominal Overall Diameter |
Nominal Weight |
| mm² | mm | mm | mm | mm | kg/km | |
| 1 | 50 | 0.6 | 4.5 | 1.7 | 25.8 | 890 |
| 1 | 70 | 0.6 | 4.5 | 1.8 | 27.8 | 1131 |
| 1 | 95 | 0.6 | 4.5 | 1.8 | 29.1 | 1397 |
| 1 | 120 | 0.6 | 4.5 | 1.9 | 30.7 | 1663 |
| 1 | 150 | 0.6 | 4.5 | 1.9 | 32.3 | 1957 |
| 1 | 185 | 0.6 | 4.5 | 2 | 34 | 2317 |
| 1 | 240 | 0.6 | 4.5 | 2.1 | 36.6 | 2917 |
| 1 | 300 | 0.6 | 4.5 | 2.1 | 39 | 3499 |
| 1 | 400 | 0.6 | 4.5 | 2.3 | 42 | 4358 |
| 1 | 500 | 0.6 | 4.5 | 2.4 | 45.6 | 5392 |
| 1 | 630 | 0.7 | 4.5 | 2.5 | 50.3 | 6810 |
| 1 | 800 | 0.7 | 4.5 | 2.6 | 54.6 | 8620 |
Quality Control
FR-N20XA8E-R 12/20kV Cable Gen to NF C 33-226 - Cu/XLPE/MDPE
Raw Material Test
Raw Material Test for FR-N20XA8E-R Triplex 12/20kV Cable ensures NF C 33-226 compliance and MV reliability. The rigorous process includes: Supplier Certification Review: Verify stranded copper conductors meet NF C 33-226/IEC 60228 class 2 for purity (>99.9% Cu), stranding, and conductivity; XLPE insulation compound certified to IEC 60502-2 for electrical/thermal properties; MDPE sheath compound certified for mechanical and environmental resistance. Conductor Analysis: Test copper for tensile strength (>200 MPa), elongation (>10–15%), conductivity (≥97% IACS), and surface quality (no oxidation/cracks). Semi-Conductive Compound Testing: Semi-conductive conductor and insulation screens evaluated for resistivity (≤1000 Ω·m), adhesion, thermal stability, and compatibility to ensure uniform electric field distribution.
Process inspection
Process Inspection during manufacturing of FR-N20XA8E-R Triplex 12/20kV Cable maintains triplex precision and MV integrity. Steps include: Conductor Stranding: Monitor class 2 stranding for uniform lay length, compactness, and no loose strands. Triple Extrusion: Apply semi-conductive conductor screen, XLPE insulation, and semi-conductive insulation screen in continuous triple extrusion; inline diameter scanners, eccentricity monitors, and spark testers detect voids/defects. Screening Application: Apply copper wire screen with precise coverage for grounding. Triplex Assembly: Twist three insulated cores with controlled lay length for triplex configuration. Outer Sheath Extrusion: Extrude MDPE sheath; real-time checks on thickness, surface finish, adhesion, and sheath integrity.
Finished Product
Finished Product Test confirms the FR-N20XA8E-R Triplex 12/20kV Cable meets NF C 33-226 standards before shipment. The procedure includes: Visual & Dimensional Inspection: Examine full length for defects, uniformity, markings, and measure outer diameter/weight per meter. Electrical Tests: DC resistance, insulation resistance (>1000 MΩ·km), high-voltage withstand (e.g., 42kV/5 min or per NF C 33-226), partial discharge (<5 pC), and screen continuity. Mechanical Evaluation: Bending radius (15–20× OD), tensile strength, crush resistance, and impact tests. Sheath & Insulation Performance: Thermal aging (135°C/168h), hot set test, environmental stress cracking resistance (ESCR), UV aging, and moisture resistance verified. Thermal & Short-Circuit Validation: Confirm ampacity ratings and short-circuit withstand at 250°C for 1 s.
Application
The FR-N20XA8E-R Triplex 12/20kV Cable is perfect for 12/20 kV overhead aerial bundled lines, underground MV distribution, rural/urban electrification, substation feeders, renewable energy connections, and harsh environment installations requiring NF C 33-226 compliant, XLPE-insulated, MDPE-sheathed triplex cable with high mechanical and electrical performance.
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
Product Packaging
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What are the advantages of power cables and overhead lines?(1) Reliable operation, because it is installed in a hidden place such as underground, it is less damaged by external forces, has less chance of failure, and the power supply is safe, and it will not cause harm to people; (2) The maintenance workload is small and frequent inspections are not required; (3) No need to erect towers; (4) Help improve power factor.
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Which aspects should be considered when choosing the cross section of a power cable?(1) The long-term allowable working current of the cable; (2) Thermal stability once short circuited; (3) The voltage drop on the line cannot exceed the allowable working range.
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What are the measures for cable fire prevention?(1) Use flame-retardant cables; (2) Use fireproof cable tray; (3) Use fireproof paint; (4) Fire partition walls and fire baffles are installed at cable tunnels, mezzanine exits, etc.; (5) Overhead cables should avoid oil pipelines and explosion-proof doors, otherwise local pipes or heat insulation and fire prevention measures should be taken.
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What should be paid attention to during the transportation and handling of cables?(1) During transportation, loading and unloading, cables and cable reels should not be damaged. It is strictly forbidden to push the cable reels directly from the vehicle. Generally, cables should not be transported and stored flat. (2) Before transporting or rolling the cable reel, ensure that the cable reel is firm, the cable is wound tightly, the oil pipe between the oil-filled cable and the pressure oil tank should be fixed without damage, the pressure oil tank should be firm, and the pressure indication should meet the requirements.
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What inspections should be carried out for the acceptance of cable lines?(1) The cable specifications should meet the regulations, the arrangement should be neat, no damage, and the signs should be complete, correct and clear; (2) The fixed bending radius of the cable, the related distance and the wiring of the metal sheath of the single-core power cable should meet the requirements; (3) The cable terminal and the middle head should not leak oil, and the installation should be firm. The oil pressure of the oil-filled cable and the meter setting should meet the requirements; (4) Good grounding; (5) The color of the cable terminal is correct, and the metal parts such as the bracket are completely painted; (6) There should be no debris in the cable trench, tunnel, and bridge, and the cover should be complete.
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