N2XSH Medium Voltage Power Cable(6/10kV, 12/20kV, 18/30kV)
N2XSH are flame-retardant, low smoke, zero halogen (LSZH) medium voltage cables with copper conductors, manufactured according to IEC 60502-2 standards. Featuring stranded copper conductors, cross-linked polyethylene (XLPE) insulation, copper tape or wire screen, and low smoke zero halogen (LSZH) outer sheath, it complies with IEC 60502-2 and fire performance standards. In fire situations, the LSZH sheath emits minimal smoke and no toxic halogen gases, protecting lives and equipment. Excellent electrical properties, low dielectric losses, and high thermal stability ensure efficient power transmission. Suitable for direct burial, ducts, or indoor installations in public areas, it offers good mechanical protection and moisture resistance. The N2XSH Medium Voltage Power Cable is the preferred choice for utilities, hospitals, schools, tunnels, and infrastructure projects demanding reliable, environmentally friendly medium voltage cabling with superior fire safety and long service life worldwide.
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Voltage Rating(Uo/U)(Um)
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 Temp +90°C
- Short Circuit Temp to 5 sec 250°C
- Minimum Bending Radius 15 x overall diameter
Construction
Technical Specifications
Quality Control
Application
Construction
N2XSH Medium Voltage Power Cable Constrution
Conductor
Class 2 stranded aluminium
Insulation
XLPE (Cross-Linked Polyethylene)
Conductor Screen
Semi-conductive material
Insulation Screen
Semi-conductive material
Screen
Copper Wires and Copper Tape
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
N2XSH Medium Voltage Power Cable(6/10kV, 12/20kV, 18/30kV)
N2XSH 6/10 (12) KV
N2XSH 12/20 (24)KV
N2XSH 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 | 12.65 | 19×2.97 | 0.50 | 0.40 | 3.40 | 2.96 | 20.9 |
| 1 | 150 | 25 | 14.4 | 19×3.20 | 0.50 | 0.40 | 3.40 | 2.96 | 22.7 |
| 1 | 185 | 25 | 15.75 | 27×2.62 | 0.50 | 0.40 | 3.40 | 2.96 | 24.1 |
| 1 | 240 | 25 | 18.2 | 48×2.62 | 0.50 | 0.40 | 3.40 | 2.96 | 26.8 |
| 1 | 300 | 25 | 20.5 | 61×2.62 | 0.50 | 0.40 | 3.40 | 2.96 | 28.9 |
| 1 | 400 | 35 | 23.0 | 61×2.97 | 0.50 | 0.40 | 3.40 | 2.96 | 31.7 |
| 1 | 500 | 35 | 26.0 | 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 | 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 | 12.65 | 19×2.97 | 0.50 | 0.40 | 5.50 | 4.85 | 24.9 |
| 1 | 150 | 25 | 14.4 | 19×3.20 | 0.50 | 0.40 | 5.50 | 4.85 | 26.7 |
| 1 | 185 | 25 | 15.75 | 27×2.62 | 0.50 | 0.40 | 5.50 | 4.85 | 28.1 |
| 1 | 240 | 25 | 18.2 | 48×2.62 | 0.50 | 0.40 | 5.50 | 4.85 | 30.8 |
| 1 | 300 | 25 | 20.5 | 61×2.62 | 0.50 | 0.40 | 5.50 | 4.85 | 32.9 |
| 1 | 400 | 35 | 23.0 | 61×2.97 | 0.50 | 0.40 | 5.50 | 4.85 | 35.7 |
| 1 | 500 | 35 | 26.0 | 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
N2XSH Medium Voltage Power Cable(6/10kV, 12/20kV, 18/30kV)
Raw Material Test
Raw material testing for the N2XSH Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV) ensures fire-safe quality from the outset. Copper conductors are inspected for purity and conductivity per IEC standards. XLPE insulation compound undergoes density, antioxidant content, and crosslinking analysis via OIT and DSC tests. Screen materials are checked for thickness and adhesion. LSZH sheath compound is rigorously tested for halogen content (<0.5%), smoke density, acidity, and flame-retardant additives using IEC 60754 and EN 50399 methods. Samples face tensile strength, elongation, and accelerated aging/thermal trials. The step-by-step process: incoming batch certification, sampling protocol, chemical composition spectroscopy, mechanical/electrical property testing (before/after aging), fire performance pre-simulation, and material approval decision.
Process inspection
During the manufacturing of the N2XSH Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV), process inspection maintains safety and consistency. Copper stranding is monitored for compactness with laser gauges. Triple extrusion (conductor shield, XLPE insulation, insulation shield) ensures concentricity and thickness using online X-ray systems. Screen application controls overlap and bonding. LSZH sheath extrusion includes real-time spark testing and diameter verification. Marking permanence and sheath color are inspected. Key steps: material pre-drying confirmation, extrusion/screening parameter logging (temperature, pressure), intermediate hot set tests for crosslinking degree, partial discharge monitoring, enhanced smoke additive distribution checks, defect detection/correction, and post-process cooling control.
Finished Product
The finished N2XSH Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV) undergoes comprehensive testing for safety certification. Routine tests include conductor resistance, AC high voltage withstand (up to 3.5U0), partial discharge (≤5pC), screen continuity, and thickness verification. Fire safety tests cover smoke density (IEC 61034), halogen acid gas (IEC 60754), flame propagation (IEC 60332), and heat release. Type tests include impulse withstand and thermal cycling. The process steps: sample preparation with terminations, gradual voltage ramp-up, PD monitoring, fire chamber exposure with smoke/heat measurement, environmental conditioning, post-test electrical/mechanical re-measurement, and visual inspection. Additional checks cover tan delta, capacitance, and marking durability.
Application
Ideal for medium voltage supply in metro systems, theaters, hotels, data centers, and educational facilities. Commonly installed indoors, in ducts, or underground where regulations demand low smoke zero halogen cables to minimize risk in populated or fire-sensitive areas.
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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