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XAI Armoured Cable Medium Voltage Power Cable
XAI Armoured Cable Medium Voltage Power Cable

XAI Armoured Medium Voltage Power Cable(6/10kV, 12/20kV, 18/30kV)

NPC Electric XAI Armoured Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV) delivers protected, high-performance medium voltage transmission. Constructed with copper or aluminium conductors, thermosetting XLPE insulation, metallic screen, bedding, galvanised steel wire armour (SWA), and tough outer sheath, it meets IEC 60502-2 requirements. The SWA layer offers outstanding resistance to mechanical damage, enabling direct burial without conduits. Low transmission losses, high current rating, and excellent overload tolerance ensure optimal efficiency. Optional LSZH sheath and water-blocking for added safety and reliability. Flame-retardant and environmentally robust, the XAI Armoured Medium Voltage Power Cable is widely selected for power grids, manufacturing plants, wind/solar farms, and infrastructure demanding reliable, maintenance-free medium voltage cabling with enhanced mechanical safeguarding in challenging terrains or high-impact zones worldwide.
Voltage Rating(Uo/U)(Um) 3.6/6 (7.2)KV
6/10 (12)KV
8.7/15 (17.5)KV
12/20 (24)KV
18/30 (36)KV
Temperature Rating +90°C
Minimum Bending Radius 4 or 5x diameter depending on overall diameter
Construction
Technical Specifications
Quality Control
Application

Construction

XAI Armoured Medium Voltage Power Cable Constrution
XAI Armoured Medium Voltage Power Cable

Conductor

Flexible Copper

Insulation

HEPR HF (Hard Ethylene Propylene Rubber Halogen Free) Compound

Conductor Screen

HF (Halogen Free) extruded compound

Insulation Screen

HF (Halogen Free) extruded compound

Core Screen

Plain copper tape

Bedding

Fiberglass Tape + Fiberglass Ropes (+ HEPR layer for multicores)

Inner Sheath

SHF1 compound

Armour

Plain copper wire braid

Outer Sheath

SHF1 compound

Core Identification

1 core: Off White
3 core: Off White (coloured or numbered tapes)

Outer Sheath Colour

Red

Manufacturer Standard

IEC 60092-354, IEC 60092-360

Flame retardant

IEC 60332-1-2, IEC 60332-3-22

Halogen Content & Corrosivity

IEC 60754-1 & 2, IEC 60684-2

Smoke Density

IEC 61034-1 & 2

UV Resistance

UL 1581 & 1200

Ozone Resistance

IEC 60092-360

Impact & Cold Resistance

CSA C 22.2 N° 0.3-09 & N° 38-18

Technical Specifications

XAI Armoured Medium Voltage Power Cable(6/10kV, 12/20kV, 18/30kV)
XAI Armoured 3.6/6 (7.2)KV
XAI Armoured 6/10 (12)KV
XAI Armoured 8.7/15 (17.5)KV
XAI Armoured 12/20 (24)KV
XAI Armoured 18/30 (36)KV
No of Cores

Nominal Cross

Section Area 

Nominal Screen Cross

Section Area 

Nominal Insulation

Thickness

Nominal Sheath

Thickness

Nominal Overall

Diameter

Approximate

Weight 

  mm2 mm mm mm mm kg/km
1 25 6.5 2.5 17.5 23 890
1 35 7.5 2.5 18.5 24 1020
1 50 8.4 2.5 19.4 25 1160
1 70 10.0 2.5 22.0 27 1500
1 95 11.8 2.5 23.5 29 1850
1 120 13.2 2.5 25.5 31 2130
1 150 14.6 2.5 26.5 32 2450
1 185 16.5 2.5 28.5 35 2900
1 240 19.0 2.6 31.5 38 3670
1 300 21.8 2.8 34.9 41 4370
3 25 6.5 2.5 36.5 43 2840
3 35 7.5 2.5 38.9 45 3240
3 50 8.4 2.5 40.5 48 3850
3 70 10.0 2.5 44.3 52 4780
3 95 11.8 2.5 48.2 56 5800
3 120 13.2 2.5 51.2 59 6730
3 150 14.6 2.5 54.2 62 7840
3 185 16.5 2.5 58.4 67 9180
3 240 19.0 2.6 65.2 74 11780
No of Cores

Nominal Cross

Section Area 

Nominal Screen Cross

Section Area 

Nominal Insulation

Thickness

Nominal Sheath

Thickness

Nominal Overall

Diameter

Approximate

Weight 

  mm2 mm mm mm mm kg/km
1 25 6.5 3.4 19.3 24 1000
1 35 7.5 3.4 21.4 27 1200
1 50 8.4 3.4 22.2 27 1360
1 70 10.0 3.4 23.6 29 1610
1 95 11.8 3.4 25.3 31 1950
1 120 13.2 3.4 27.2 33 2270
1 150 14.6 3.4 28.3 34 2600
1 185 16.5 3.4 30.3 37 3130
1 240 19.0 3.4 33.3 40 3850
1 300 21.8 3.4 36.1 43 4500
3 25 6.5 3.4 40.2 47 3300
3 35 7.5 3.4 42.5 50 3780
3 50 8.4 3.4 44.4 52 4300
3 70 10.0 3.4 48.2 56 5200
3 95 11.8 3.4 51.8 60 6300
3 120 13.2 3.4 55.1 63 7250
3 150 14.6 3.4 58.1 67 8250
3 185 16.5 3.4 63.2 72 9960
3 240 19.0 3.4 68.0 78 12270
No of Cores

Nominal Cross

Section Area 

Nominal Screen Cross

Section Area 

Nominal Insulation

Thickness

Nominal Sheath

Thickness

Nominal Overall

Diameter

Approximate

Weight 

  mm2 mm mm mm mm kg/km
1 25 6.5 4.5 22.6 28 1200
1 35 7.5 4.5 23.6 29 1360
1 50 8.4 4.5 24.0 30 1520
1 70 10.0 4.5 25.8 31 1800
1 95 11.8 4.5 27.9 34 2170
1 120 13.2 4.5 29.2 35 2450
1 150 14.6 4.5 30.5 37 2860
1 185 16.5 4.5 32.9 39 3420
1 240 19.0 4.5 35.3 42 4070
1 300 21.8 4.5 39.0 46 4820
3 25 6.5 4.5 45.4 53 3900
3 35 7.5 4.5 47.5 55 4350
3 50 8.4 4.5 49.1 57 4900
3 70 10.0 4.5 52.9 61 5850
3 95 11.8 4.5 56.6 65 6950
3 120 13.2 4.5 60.4 69 8100
3 150 14.6 4.5 63.3 73 9300
3 185 16.5 4.5 67.5 77 10900
No of Cores

Nominal Cross

Section Area 

Nominal Screen Cross

Section Area 

Nominal Insulation

Thickness

Nominal Sheath

Thickness

Nominal Overall

Diameter

Approximate

Weight 

  mm2 mm mm mm mm kg/km
1 35 7.5 5.5 25.6 31 1520
1 50 8.4 5.5 26.0 32 1640
1 70 10.0 5.5 28.2 34 1970
1 95 11.8 5.5 29.9 36 2430
1 120 13.2 5.5 31.2 38 2720
1 150 14.6 5.5 33.2 40 3100
1 185 16.5 5.5 35.1 42 3620
1 240 19.0 5.5 37.3 45 4300
1 300 21.8 5.5 40.9 48 5050
3 35 7.5 5.5 51.0 59 4920
3 50 8.4 5.5 53.5 61 5480
3 70 10.0 5.5 57.2 65 6360
3 95 11.8 5.5 62.4 71 7800
3 120 13.2 5.5 65.2 74 8820
3 150 14.6 5.5 68.2 78 10040
3 185 16.5 5.5 72.3 82 11500
No of Cores

Nominal Cross

Section Area 

Nominal Screen Cross

Section Area 

Nominal Insulation

Thickness

Nominal Sheath

Thickness

Nominal Overall

Diameter

Approximate

Weight 

  mm2 mm mm mm mm kg/km
1 50 8.4 8.0 31.4 38 2210
1 70 10.0 8.0 33.6 40 2580
1 95 11.8 8.0 35.3 42 2950
1 120 13.2 8.0 36.6 43 3280
1 150 14.6 8.0 38.2 45 3630
1 185 16.5 8.0 40.5 48 4230
1 240 19.0 8.0 43.2 50 4990
1 300 21.8 8.0 45.9 53 5680
3 50 8.4 8.0 65.3 74 7050
3 70 10.0 8.0 69.0 78 8030
3 95 11.8 8.0 72.7 82 9330
3 120 13.2 8.0 75.5 85 10400
3 150 14.6 8.0 79.0 89 11690

Quality Control

XAI Armoured Medium Voltage Power Cable(6/10kV, 12/20kV, 18/30kV)
XAI Armoured Medium Voltage Power Cable  Raw Material Test

Raw Material Test

For the XAI Armoured Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV), raw material testing starts with conductor (copper/aluminium) certification for conductivity and mechanical properties. XLPE granules are tested for crosslinking agent, contamination, and thermal stability via hot set pre-checks. Screen and bedding compounds undergo adhesion and resistivity verification. Steel wires are checked for galvanisation uniformity, diameter tolerance, and breaking load. Sheath materials face migration and ageing analysis. The structured process: receipt documentation review, random sampling, physical/mechanical testing (tensile, yield), chemical verification using spectroscopy, accelerated ageing/corrosion trials, and material release decision. This comprehensive evaluation secures defect-free inputs, providing the base for the XAI Armoured Medium Voltage Power Cable's electrical performance and insulation quality.

XAI Armoured Medium Voltage Power Cable  Process inspection

Process inspection

Process inspection in XAI Armoured Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV) production involves real-time quality assurance. The conductor forming monitors the strand uniformity and defects. Triple co-extrusion ensures even bonding with X-ray gauges. Screen and bedding provide a smooth armouring base. Steel wire application controls helical lay, tension balance, and overlap. Sheath extrusion includes online spark testing and thickness uniformity. Critical steps: pre-extrusion compound verification, parameter stabilisation, capacitance-based eccentricity monitoring, armour wire coverage measurement, gel fraction sampling, partial discharge scanning, and defect removal protocols. This multi-stage control maintains the XAI Armoured Medium Voltage Power Cable's structural precision, screening reliability, strong armour adhesion, and IEC 60502-2 compliance throughout manufacturing.

XAI Armoured Medium Voltage Power Cable  Finished Product

Finished Product

Completed XAI Armoured Medium Voltage Power Cable (6/10kV, 12/20kV, 18/30kV) reels face rigorous tests. Key routines: DC resistance, high-potential AC test in water if required, partial discharge (≤5pC), armour continuity, and thickness checks. Mechanical endurance via impact, crushing, and pulling tests. Heat shock, flame propagation, and water tightness evaluations follow. The sequential process: conditioning, voltage/mechanical load application, timed exposure monitoring, recovery inspection, property re-measurement, and documentation. Additional checks cover ovality and weight. Passing all verifies the XAI Armoured Medium Voltage Power Cable's mechanical robustness, electrical reliability, screening effectiveness, and suitability for direct burial medium voltage networks in demanding environments.

Application

Excellent for armoured medium voltage supply in chemical plants, mining areas, railways, and city developments. Commonly direct-buried for interconnecting substations, transformers, and switchgear where high mechanical protection against external forces is required in harsh or high-risk locations.

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 (1)
Wires and Cables packaging (2)
Wires and Cables packaging (2)
Wires and Cables packaging (3)
Wires and Cables packaging (3)
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Wires and Cables packaging (7)
Wires and Cables packaging (8)
Wires and Cables packaging (8)

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FAQ From Customers

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.
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.
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.
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.
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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