NA2XSH Medium Voltage Power Cable(6/10kV, 12/20kV, 18/30kV)
The NA2XSH is a low-smoke halogen-free (LSZH), medium-voltage aluminum conductor cable with excellent flame-retardant properties and meets the design requirements of the IEC 60502-2 standard. Featuring stranded aluminium 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 safety standards. In fire conditions, the LSZH sheath produces minimal smoke and no toxic halogen gases, enhancing safety in populated areas. Aluminium construction reduces weight and costs while maintaining good current capacity. With low dielectric losses, excellent partial discharge resistance, and high thermal stability, it ensures efficient, long-term performance. Suitable for direct burial, ducts, or indoor use, the NA2XSH Medium Voltage Power Cable is ideal for utilities, hospitals, schools, tunnels, and infrastructure projects requiring economical, environmentally friendly medium voltage cabling with superior fire protection and reliability worldwide.
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Voltage Rating(Uo/U)(Um)
6/10 (12) KV
12/20 (24)KV
18/30 (36)KV - Conductor Operating Temp +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
NA2XSH 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
Filler
LSZH (Low Smoke Zero Halogen)
Screen
Copper Wires and Copper Tape
Sheath
LSZH (Low Smoke Zero Halogen) - UV Resistan
Sheath Color
Red
Manufacturer Standard
IEC 60502-2
Flame retardant
IEC/EN 60332-1-2
Halogen Free
IEC/EN 61034-1/2, IEC/EN 60754-1/2
Technical Specifications
NA2XSH Medium Voltage Power Cable(6/10kV, 12/20kV, 18/30kV)
NA2XSH 6/10 (12) KV
NA2XSH 12/20 (24)KV
NA2XSH 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 | 8.20 | 7×2.90 | 0.50 | 0.40 | 3.40 | 2.96 | 16.4 |
| 1 | 70 | 16 | 9.70 | 19×2.18 | 0.50 | 0.40 | 3.40 | 2.96 | 17.9 |
| 1 | 95 | 16 | 11.4 | 19×2.55 | 0.50 | 0.40 | 3.40 | 2.96 | 19.6 |
| 1 | 120 | 16 | 12.65 | 19×2.90 | 0.50 | 0.40 | 3.40 | 2.96 | 20.9 |
| 1 | 150 | 25 | 14.4 | 19×3.16 | 0.50 | 0.40 | 3.40 | 2.96 | 22.7 |
| 1 | 185 | 25 | 15.75 | 37×2.55 | 0.50 | 0.40 | 3.40 | 2.96 | 24.1 |
| 1 | 240 | 25 | 18.2 | 37×2.90 | 0.50 | 0.40 | 3.40 | 2.96 | 26.8 |
| 1 | 300 | 25 | 20.5 | 61×2.55 | 0.50 | 0.40 | 3.40 | 2.96 | 28.9 |
| 1 | 400 | 35 | 23.0 | 61×2.90 | 0.50 | 0.40 | 3.40 | 2.96 | 31.7 |
| 1 | 500 | 35 | 26.0 | 61×3.20 | 0.50 | 0.40 | 3.40 | 2.96 | 34.7 |
| 1 | 630 | 35 | 30.2 | 61×3.65 | 0.50 | 0.40 | 3.40 | 2.96 | 38.9 |
| No. Of Cores | Nominal Cross - Sectional Area |
Nominal Overall Diameter |
Nominal Weight | |
| Conductor | Copper Wire Screen | |||
| mm2 | mm2 | (mm) | KS/KM | |
| 1 | 35 | 16 | 27 | 800 |
| 1 | 50 | 16 | 28 | 850 |
| 1 | 70 | 16 | 30 | 950 |
| 1 | 95 | 16 | 32 | 1100 |
| 1 | 120 | 16 | 33 | 1200 |
| 1 | 150 | 25 | 34 | 1400 |
| 1 | 185 | 25 | 36 | 1600 |
| 1 | 240 | 25 | 38 | 1800 |
| 1 | 300 | 25 | 38 | 2000 |
| 1 | 400 | 35 | 43 | 2500 |
| 1 | 500 | 35 | 46 | 2900 |
| 1 | 630 | 35 | 50 | 3500 |
| 3 | 35 | 16 | 52 | 2750 |
| 3 | 50 | 16 | 55 | 3000 |
| 3 | 70 | 16 | 60 | 3500 |
| 3 | 95 | 16 | 63 | 4200 |
| 3 | 120 | 16 | 66 | 4500 |
| 3 | 150 | 25 | 70 | 5250 |
| 3 | 185 | 25 | 73 | 5800 |
| 3 | 240 | 25 | 79 | 6800 |
| 3 | 300 | 25 | 84 | 7800 |
| 3 | 400 | 25 | 90 | 9400 |
|
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 | 8.20 | 7×2.90 | 0.50 | 0.40 | 8.00 | 7.1 | 25.2 |
| 1 | 70 | 16 | 9.70 | 19×2.18 | 0.50 | 0.40 | 8.00 | 7.1 | 26.7 |
| 1 | 95 | 16 | 11.4 | 19×2.55 | 0.50 | 0.40 | 8.00 | 7.1 | 28.4 |
| 1 | 120 | 16 | 12.7 | 19×2.90 | 0.50 | 0.40 | 8.00 | 7.1 | 29.7 |
| 1 | 150 | 25 | 14.5 | 19×3.16 | 0.50 | 0.40 | 8.00 | 7.1 | 31.5 |
| 1 | 185 | 25 | 15.9 | 37×2.55 | 0.50 | 0.40 | 8.00 | 7.1 | 32.9 |
| 1 | 240 | 25 | 18.6 | 37×2.90 | 0.50 | 0.40 | 8.00 | 7.1 | 35.6 |
| 1 | 300 | 25 | 20.7 | 61×2.55 | 0.50 | 0.40 | 8.00 | 7.1 | 37.7 |
| 1 | 400 | 35 | 23.5 | 61×2.90 | 0.50 | 0.40 | 8.00 | 7.1 | 40.5 |
| 1 | 500 | 35 | 26.5 | 61×3.20 | 0.50 | 0.40 | 8.00 | 7.1 | 43.5 |
| 1 | 630 | 35 | 30.2 | 61×3.65 | 0.50 | 0.40 | 8.00 | 7.1 | 47.7 |
Quality Control
NA2XSH Medium Voltage Power Cable(6/10kV, 12/20kV, 18/30kV)
Raw Material Test
Raw material testing for the NA2XSH Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV) prioritizes fire safety and performance. Aluminium conductors are inspected for conductivity, purity, and mechanical properties 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 strictly tested for halogen content (<0.5%), smoke density, acidity, and flame-retardant additives using IEC 60754 and EN 50399 protocols. Samples endure 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 NA2XSH Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV), process inspection ensures safety and uniformity. Aluminium stranding is monitored for compactness with laser gauges. Triple extrusion (conductor shield, XLPE insulation, insulation shield) controls concentricity and thickness using online X-ray systems. The screen application verifies 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/flame additive distribution checks, defect detection/correction, and post-process cooling control.
Finished Product
The finished NA2XSH Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV) undergoes rigorous testing for fire and electrical 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
NA2XSH Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV) is perfect for underground and indoor medium voltage supply in hospitals, schools, airports, tunnels, shopping centers, and high-rise buildings. Ideal where low smoke zero halogen cables are mandatory for occupant safety and reduced toxic emissions during fires.
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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