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N2XS(F)H Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV)
The N2XS(F)H Medium Voltage Power Cable is engineered for medium voltage power distribution systems operating at 6/10kV, 12/20kV, and 18/30kV, where electrical reliability and fire safety are essential. The cable combines a copper conductor with XLPE insulation and a longitudinally corrugated aluminum sheath that delivers excellent moisture protection and mechanical strength.
The LSZH outer sheath minimizes toxic gas release and smoke generation during fire exposure, supporting safer evacuation and equipment protection. Designed and manufactured in compliance with IEC standards, N2XS(F)H cables provide low dielectric losses, high thermal stability, and dependable long-term operation. The metallic sheath enhances grounding and fault current performance, making the cable suitable for critical infrastructure and underground installations.
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Voltage Rating(Uo/U)
6/10 (12) KV
12/20 (24)KV
18/30 (36)KV -
Test Voltage
21kV AC 50Hz (5 mins)
42kV AC 50Hz (5 mins)
63kV AC 50Hz (5 mins) - Temperature Rating -40°C to +60°C
- Conductor Operating Temperature +90°C
- Short Circuit Temp up to 5 sec 250°C
- Minimum Bending Radius 15 x overall diameter
Construction
Technical Specifications
Quality Control
Application
Construction
N2XS(F)H Medium Voltage Power Cable Constrution
Conductor
Class 2 Stranded Copper
Insulation
XLPE (Cross-Linked Polyethylene)
Conductor Screen
Semi-conductive material
Insulation Screen
Semi-conductive material
Longitudinal Waterblocking
Semi-conductive swellable tape
Screen
Copper Wires and Copper Tape
Longitudinal Waterblocking
Swellable Tapes
Outer Sheath
LSZH (Low Smoke Zero Halogen)
Sheath Color
Red/Black
Manufacturer Standard
IEC 60502-2, IEC 60228
UV Resistant
ISO 4892-3
Abrasion and Tear Resistant
EN 60229-4.1
Impact rated to
AG2 EN 60364 - 5.51
Flame retardant
IEC 60332-3-24 Cat C, IEC 60332-1-2
Low Smoke Zero Halogen
IEC 60754-1/2, IEC 61034-2
Technical Specifications
N2XS(F)H Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV)
N2XS(F)H 6/10 (12) KV
N2XS(F)H 12/20 (24)KV
N2XS(F)H 18/30 (36)KV
|
No. Of Cores |
Nominal Cross Sectional Area |
Nominal Conductor Diameter |
Number Wires Conductor |
NOM. Thickness Semi-Con. Layer |
Nominal Insulation Thickness |
Minimum Insulation Thickness |
Nominal Diameter Over Insulation |
||
| Conductor | Screen | Inner | Outer | ||||||
| mm2 | mm2 | mm | mm | mm | mm | mm | mm | mm | |
| 1 | 50 | 16 | 8.10 | 10×2.62 | 0.50 | 0.40 | 3.40 | 2.96 | 16.3 |
| 1 | 70 | 16 | 9.70 | 14×2.62 | 0.50 | 0.40 | 3.40 | 2.96 | 17.9 |
| 1 | 95 | 16 | 11.4 | 19×2.62 | 0.50 | 0.40 | 3.40 | 2.96 | 19.6 |
| 1 | 120 | 16 | 12.7 | 19×2.97 | 0.50 | 0.40 | 3.40 | 2.96 | 20.9 |
| 1 | 150 | 25 | 14.5 | 19×3.20 | 0.50 | 0.40 | 3.40 | 2.96 | 22.7 |
| 1 | 185 | 25 | 15.9 | 27×2.62 | 0.50 | 0.40 | 3.40 | 2.96 | 24.1 |
| 1 | 240 | 25 | 18.6 | 48×2.62 | 0.50 | 0.40 | 3.40 | 2.96 | 26.8 |
| 1 | 300 | 25 | 20.7 | 61×2.62 | 0.50 | 0.40 | 3.40 | 2.96 | 28.9 |
| 1 | 400 | 35 | 23.5 | 61×2.97 | 0.50 | 0.40 | 3.40 | 2.96 | 31.7 |
| 1 | 500 | 35 | 26.5 | 61×3.29 | 0.50 | 0.40 | 3.40 | 2.96 | 34.7 |
| 1 | 630 | 35 | 30.2 | 61×3.80 | 0.50 | 0.40 | 3.40 | 2.96 | 38.9 |
|
No. Of Cores |
Nominal Cross Sectional Area |
Nominal Conductor Diameter |
Number Wires Conductor |
NOM. Thickness Semi-Con. Layer |
Nominal Insulation Thickness |
Minimum Insulation Thickness |
Nominal Diameter Over Insulation |
||
| Conductor | Screen | Inner | Outer | ||||||
| mm2 | mm2 | mm | mm | mm | mm | mm | mm | mm | |
| 1 | 35 | 16 | 6.90 | 7×2.62 | 0.50 | 0.40 | 5.50 | 4.85 | 19.1 |
| 1 | 50 | 16 | 8.10 | 10×2.62 | 0.50 | 0.40 | 5.50 | 4.85 | 20.3 |
| 1 | 70 | 16 | 9.70 | 14×2.62 | 0.50 | 0.40 | 5.50 | 4.85 | 21.9 |
| 1 | 95 | 16 | 11.4 | 19×2.62 | 0.50 | 0.40 | 5.50 | 4.85 | 23.6 |
| 1 | 120 | 16 | 12.7 | 19×2.97 | 0.50 | 0.40 | 5.50 | 4.85 | 24.9 |
| 1 | 150 | 25 | 14.5 | 19×3.20 | 0.50 | 0.40 | 5.50 | 4.85 | 26.7 |
| 1 | 185 | 25 | 15.9 | 27×2.62 | 0.50 | 0.40 | 5.50 | 4.85 | 28.1 |
| 1 | 240 | 25 | 18.6 | 48×2.62 | 0.50 | 0.40 | 5.50 | 4.85 | 30.8 |
| 1 | 300 | 25 | 20.7 | 61×2.62 | 0.50 | 0.40 | 5.50 | 4.85 | 32.9 |
| 1 | 400 | 35 | 23.5 | 61×2.97 | 0.50 | 0.40 | 5.50 | 4.85 | 35.7 |
| 1 | 500 | 35 | 26.5 | 61×3.29 | 0.50 | 0.40 | 5.50 | 4.85 | 38.7 |
| 1 | 630 | 35 | 30.2 | 61×3.80 | 0.50 | 0.40 | 5.50 | 4.85 | 42.9 |
|
No. Of Cores |
Nominal Cross Sectional Area |
Nominal Conductor Diameter |
Number Wires Conductor |
NOM. Thickness Semi-Con. Layer |
Nominal Insulation Thickness |
Minimum Insulation Thickness |
Nominal Diameter Over Insulation |
||
| Conductor | Screen | Inner | Outer | ||||||
| mm2 | mm2 | mm | mm | mm | mm | mm | mm | mm | |
| 1 | 50 | 16 | 8.10 | 10×2.62 | 0.50 | 0.40 | 8.00 | 7.1 | 25.1 |
| 1 | 70 | 16 | 9.70 | 14×2.62 | 0.50 | 0.40 | 8.00 | 7.1 | 26.7 |
| 1 | 95 | 16 | 11.4 | 19×2.62 | 0.50 | 0.40 | 8.00 | 7.1 | 28.4 |
| 1 | 120 | 16 | 12.7 | 19×2.97 | 0.50 | 0.40 | 8.00 | 7.1 | 29.7 |
| 1 | 150 | 25 | 14.5 | 19×3.20 | 0.50 | 0.40 | 8.00 | 7.1 | 31.5 |
| 1 | 185 | 25 | 15.9 | 27×2.62 | 0.50 | 0.40 | 8.00 | 7.1 | 32.9 |
| 1 | 240 | 25 | 18.6 | 48×2.62 | 0.50 | 0.40 | 8.00 | 7.1 | 35.6 |
| 1 | 300 | 25 | 20.7 | 61×2.62 | 0.50 | 0.40 | 8.00 | 7.1 | 37.7 |
| 1 | 400 | 35 | 23.5 | 61×2.97 | 0.50 | 0.40 | 8.00 | 7.1 | 40.5 |
| 1 | 500 | 35 | 26.5 | 61×3.29 | 0.50 | 0.40 | 8.00 | 7.1 | 43.5 |
| 1 | 630 | 35 | 30.2 | 61×3.80 | 0.50 | 0.40 | 8.00 | 7.1 | 47.7 |
Quality Control
N2XS(F)H Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV)
Raw Material Test
Raw Material Test is the first quality control step for the N2XS(F)H Medium Voltage Power Cable. Copper conductors are tested for electrical conductivity, tensile strength, elongation, and surface quality to ensure stable current-carrying capacity. XLPE insulation compounds undergo dielectric strength testing, thermal aging evaluation, and impurity analysis. Aluminum materials used for the corrugated sheath are inspected for uniform thickness, corrosion resistance, and mechanical integrity. LSZH sheath compounds are tested for flame retardancy, smoke density, and halogen-free performance. Only materials that fully comply with IEC and internal specifications are approved for production.
Process inspection
Process Inspection ensures consistent manufacturing quality of the N2XS(F)H Medium Voltage Power Cable at every production stage. Conductor stranding is monitored for lay length, compactness, and roundness. XLPE insulation extrusion and cross-linking are continuously controlled to ensure uniform insulation thickness and electrical integrity. The application of the corrugated aluminum sheath is inspected for longitudinal sealing and mechanical continuity. LSZH outer sheath extrusion is checked for dimensional accuracy and surface quality. In-process electrical and dimensional inspections are performed to prevent defects prior to final testing.
Finished Product
Finished Product Test verifies the electrical, mechanical, and fire safety performance of the N2XS(F)H Medium Voltage Power Cable before shipment. Tests include conductor resistance measurement, insulation resistance testing, and partial discharge testing. High-voltage withstand tests confirm insulation strength at rated voltage levels. Mechanical tests assess sheath robustness and bending performance. Additional flame retardancy and smoke emission tests validate LSZH sheath performance. Visual inspection ensures correct marking, construction, and packaging.
Application
Suitable for underground transmission, power stations, transport tunnels, industrial plants, substations, and infrastructure projects requiring fire-resistant medium voltage cables.
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
Product Packaging
Wires and Cables packaging (1)
Wires and Cables packaging (2)
Wires and Cables packaging (3)
Wires and Cables packaging (4)
Wires and Cables packaging (5)
Wires and Cables packaging (6)
Wires and Cables packaging (7)
Wires and Cables packaging (8)
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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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