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Steel Wire Armoured Cable (SWA Cable)
Steel Wire Armoured Cable (SWA Cable)

Steel Wire Armoured Cable (SWA Cable) for Power Distribution Systems

The Steel Wire Armoured Cable (SWA Cable) is a high-performance power cable designed for applications requiring exceptional mechanical protection and reliable electrical transmission. Constructed with copper or aluminum conductors, premium XLPE insulation, galvanized steel wire armour, and a durable PVC outer sheath, the cable offers outstanding durability in demanding environments. The galvanized steel wire armour provides excellent tensile strength, impact resistance, and protection against external mechanical damage, making the cable suitable for underground installations, direct burial applications, and industrial facilities. XLPE insulation delivers superior dielectric properties, low electrical losses, and continuous operating temperatures up to 90°C. The robust PVC sheath protects against moisture, chemicals, abrasion, UV exposure, and environmental stress, ensuring a long operational lifespan. Manufactured according to IEC 60502-1, IEC 60502-2, and BS 5467 standards, the cable is widely used in power distribution networks, renewable energy projects, utility infrastructure, and industrial plants. The Steel Wire Armoured Cable combines electrical reliability, mechanical strength, and installation flexibility, making it an ideal solution for critical power applications.
Voltage Rating 0.6/1kV – 35kV
Operating Temp 90°C
Short Circuit Temp 250°C (5 sec)
Construction
Technical Specifications
Quality Control
Application

Construction

Steel Wire Armoured Cable Construction
Steel Wire Armoured Cable

Product Features

Galvanized steel wire armour protection
Excellent tensile and impact resistance
Suitable for direct burial installation
Premium XLPE insulation system
Durable PVC outer sheath
High mechanical strength
Moisture and corrosion resistance Long service life

Conductor

Stranded copper (Class 2)

Insulation

XLPE

Inner Sheath

PVC

Outer Sheath

PVC (ST2)

Armour

Galvanized steel wire (SWA)

Standard

IEC 60502-1

Technical Specifications

Steel Wire Armoured Cable (SWA Cable) for Power Distribution Systems
Steel Wire Armoured Cable (SWA Cable) Data Sheet

0.6/1kV-2 core copper conductor XLPE insulated steel wire armored PVC sheathed power cable

Nominal cross

sectional area

Insulation

thickness

Steel Wire

diameter

Sheath

thickness

Approximate

outer diameter

Approx.

weight

Max.D.C resistance of

conductor(20℃)

Current carrying

capacity 

mm2

mm

mm

mm

mm

kg/km

Ω/km

In Air(A)

In Ground(A)

2X2.5

0.7

0.8

1.8

14.8

364

7.41

23

32

2X4

0.7

0.8

1.8

15.7

425

4.61

30

41

2X6

0.7

1.25

1.8

17.6

646

3.08

39

53

2X10

0.7

1.25

1.8

20.1

802

1.83

53

70

2X16

0.7

1.25

1.8

22.3

1008

1.15

68

91

2X25

0.9

1.6

1.8

26.3

1470

0.727

91

116

2X35

0.9

1.6

1.8

27.6

1712

0.524

112

140

2X50

1

1.6

1.9

30.8

2123

0.387

137

168

2X70

1.1

2

2

35.4

2974

0.268

172

203

2X95

1.1

2

2.1

39.5

3737

0.193

214

249

2X120

1.2

2

2.3

42.9

4453

0.153

249

284

2X150

1.4

2.5

2.4

48

5744

0.124

284

315

2X185

1.6

2.5

2.6

52.7

6811

0.0991

326

357

 

 

 

 

 

 

 

 

 

0.6/1kV-3 core copper conductor XLPE insulated steel wire armored PVC sheathed power cable

Nominal cross

sectional area

Insulation

thickness

Steel Wire

diameter

Sheath

thickness

Approximate outer

diameter

Approx.

weight

Max.D.C resistance of

conductor(20℃)

Current carrying

capacity 

mm2

mm

mm

mm

mm

kg/km

Ω/km

In Air(A)

In Ground(A)

3X2.5

0.7

0.8

1.8

15.3

405

7.41

20

27

3X4

0.7

0.8

1.8

16.2

481

4.61

26

36

3X6

0.7

1.25

1.8

18.3

696

3.08

33

45

3X10

0.7

1.25

1.8

20.9

930

1.83

46

60

3X16

0.7

1.25

1.8

23.3

1191

1.15

59

77

3X25

0.9

1.6

1.8

27.6

1745

0.727

77

98

3X35

0.9

1.6

1.8

29

2100

0.524

95

119

3X50

1

1.6

1.9

32.5

2628

0.387

119

144

3X70

1.1

2

2.1

37.9

3728

0.268

151

175

3X95

1.1

2

2.2

41.8

4692

0.193

186

210

3X120

1.2

2

2.3

45.5

5645

0.153

217

242

3X150

1.4

2.5

2.5

51.3

7350

0.124

245

270

3X185

1.6

2.5

2.7

55.9

8698

0.0991

284

305

3X240

1.7

2.5

2.9

62.1

10837

0.0754

336

350

3X300

1.8

2.5

3

67.4

12990

0.0601

389

396

 

 

 

 

 

 

 

 

 

0.6/1kV-4 core copper conductor XLPE insulated steel wire armored PVC sheathed power cable

Nominal cross

sectional area

Insulation

thickness

Steel Wire

diameter

Sheath

thickness

Approximate outer

diameter

Approx.

weight

Max.D.C resistance of

conductor(20℃)

Current carrying

capacity 

mm2

mm

mm

mm

mm

kg/km

Ω/km

In Air(A)

In Ground(A)

4X2.5

0.7

0.8

1.8

16.1

472

7.41

20

27

4X4

0.7

1.25

1.8

18.1

677

4.61

26

36

4X6

0.7

1.25

1.8

19.3

804

3.08

33

45

4X10

0.7

1.25

1.8

22.3

1088

1.83

46

60

4X16

0.7

1.6

1.8

25.7

1571

1.15

59

77

4X25

0.9

1.6

1.8

29.7

2085

0.727

77

98

4X35

0.9

1.6

1.9

31.4

2543

0.524

95

119

4X50

1

1.6

2

35.3

3214

0.387

119

144

4X70

1.1

2

2.2

41.2

4571

0.268

151

175

4X95

1.1

2

2.3

45.6

5782

0.193

186

210

4X120

1.2

2.5

2.5

51.2

7557

0.153

217

242

4X150

1.4

2.5

2.7

56.1

9080

0.124

245

270

4X185

1.6

2.5

2.8

61.3

10822

0.0991

284

305

4X240

1.7

2.5

3.1

68.1

13566

0.0754

336

350

4X300

1.8

2.5

3.2

74.1

16356

0.0601

389

396

 

 

 

 

 

 

 

 

 

0.6/1kV-5 core copper conductor XLPE insulated steel wire armored PVC sheathed power cable

Nominal cross

sectional area

Insulation

thickness

Steel Wire

diameter

Sheath

thickness

Approximate outer

diameter

Approx.

weight

Max.D.C resistance of

conductor(20℃)

Current carrying

capacity 

mm2

mm

mm

mm

mm

kg/km

Ω/km

In Air(A)

In Ground(A)

5X2.5

0.7

1.25

1.8

17.9

645

7.41

20

27

5X4

0.7

1.25

1.8

19.1

770

4.61

26

36

5X6

0.7

1.25

1.8

20.5

925

3.08

33

45

5X10

0.7

1.6

1.8

24.6

1417

1.83

46

60

5X16

0.7

1.6

1.8

27.6

1812

1.15

59

77

5X25

0.9

1.6

1.9

32.2

2460

0.727

77

98

5X35

0.9

1.6

2

34.1

3019

0.524

95

119

5X50

1

2

2.2

39.7

4166

0.387

119

144

5X70

1.1

2

2.3

44.9

5443

0.268

151

175

5X95

1.1

2.5

2.5

51.3

7485

0.193

186

210

5X120

1.2

2.5

2.7

55.9

9026

0.153

217

242

5X150

1.4

2.5

2.8

61.4

10912

0.124

245

270

5X185

1.6

2.5

3

67.6

13119

0.0991

284

305

5X240

1.7

2.5

3.3

74.8

16427

0.0754

336

350

5X300

1.8

3.15

3.5

83.2

20915

0.0601

389

396

 

 

 

 

 

 

 

 

 

0.6/1kV-3+1 core copper conductor XLPE insulated steel wire armored PVC sheathed power cable

Nominal cross

sectional area

Insulation

thickness

Steel Wire

diameter

Sheath

thickness

Approximate outer

diameter

Approx.

weight

Max.D.C resistance of

conductor(20℃)

Current carrying

capacity 

mm2

mm

mm

mm

mm

kg/km

Ω/km

In Air(A)

In Ground(A)

3X4+1X2.5

0.7/0.7

1.25

1.8

17.8

873

4.61/7.41

26

36

3X6+1X4

0.7/0.7

1.25

1.8

19.1

764

3.08/4.61

33

45

3X10+1X6

0.7/0.7

1.25

1.8

21.6

1002

1.83/3.08

46

60

3X16+1X10

0.7/0.7

1.6

1.8

25.1

1475

1.15/1.83

59

77

3X25+1X16

0.9/0.7

1.6

1.8

28.7

2101

0.727/1.15

77

98

3X35+1X16

0.9/0.7

1.6

1.8

30

2300

0.524/1.15

95

119

3X50+1X25

1/0.9

1.6

2

34.1

2945

0.387/0.727

119

144

3X70+1X35

1.1/0.9

2

2.1

39.2

4131

0.268/0.524

151

175

3X95+1X50

1.1/1.0

2

2.3

43.2

5199

0.193/0.387

186

210

3X120+1X70

1.2/1.1

2.5

2.4

48.8

6827

0.153/0.268

217

242

3X150+1X70

1.4/1.1

2.5

2.6

52.9

7915

0.124/0.268

245

270

3X185+1X95

1.6/1.1

2.5

2.7

57.8

9655

0.0991/0.193

284

305

3X240+1X120

1.7/1.2

2.5

2.9

64.1

11988

0.0754/0.153

336

350

3X300+1X150

1.8/1.4

2.5

3.1

69.8

14475

0.0601/0.124

389

396

 

 

 

 

 

 

 

 

 

0.6/1kV-4+1 core copper conductor XLPE insulated steel wire armored PVC sheathed power cable

Nominal cross

sectional area

Insulation

thickness

Steel Wire

diameter

Sheath

thickness

Approximate outer

diameter

Approx.

weight

Max.D.C resistance of

conductor(20℃)

Current carrying

capacity 

mm2

mm

mm

mm

mm

kg/km

Ω/km

In Air(A)

In Ground(A)

4X4+1X2.5

0.7/0.7

1.25

1.8

18.9

731

4.61/7.41

26

36

4X6+1X4

0.7/0.7

1.25

1.8

20.3

875

3.08/4.61

33

45

4X10+1X6

0.7/0.7

1.6

1.8

23.9

1295

1.83/3.08

46

60

4X16+1X10

0.7/0.7

1.6

1.8

27

1712

1.15/1.83

59

77

4X25+1X16

0.9/0.7

1.6

1.9

31.2

2322

0.727/1.15

77

98

4X35+1X16

0.9/0.7

1.6

1.9

32.8

2759

0.524/1.15

95

119

4X50+1X25

1/0.9

2

2.1

38.5

3860

0.387/0.727

119

144

4X70+1X35

1.1/0.9

2

2.3

43

5010

0.268/0.524

151

175

4X95+1X50

1.1/1.0

2.5

2.4

48.9

6850

0.193/0.387

186

210

4X120+1X70

1.2/1.1

2.5

2.6

54

8395

0.153/0.268

217

242

4X150+1X70

1.4/1.1

2.5

2.7

58.4

9745

0.124/0.268

245

270

4X185+1X95

1.6/1.1

2.5

2.9

64.4

11948

0.0991/0.193

284

305

4X240+1X120

1.7/1.2

2.5

3.1

71.1

14832

0.0754/0.153

336

350

4X300+1X150

1.8/1.4

3.15

3.4

78.9

18826

0.0601/0.124

389

396

 

 

 

 

 

 

 

 

 

0.6/1kV-3+2 core copper conductor XLPE insulated steel wire armored PVC sheathed power cable

Nominal cross

sectional area

Insulation

thickness

Steel Wire

diameter

Sheath

thickness

Approximate outer

diameter

Approx.

weight

Max.D.C resistance of

conductor(20℃)

Current carrying

capacity 

mm2

mm

mm

mm

mm

kg/km

Ω/km

In Air(A)

In Ground(A)

3X4+2X2.5

0.7/0.7

1.25

1.8

18.6

705

4.61/7.41

26

36

3X6+2X4

0.7/0.7

1.25

1.8

20

845

3.08/4.61

33

45

3X10+2X6

0.7/0.7

1.25

1.8

22.5

1109

1.83/3.08

46

60

3X16+2X10

0.7/0.7

1.6

1.8

26.5

1630

1.15/1.83

59

77

3X25+2X16

0.9/0.7

1.6

1.8

30.2

2185

0.727/1.15

77

98

3X35+2X16

0.9/0.7

1.6

1.9

31.3

2505

0.524/1.15

95

119

3X50+2X25

1/0.9

2

2.1

37

3531

0.387/0.727

119

144

3X70+2X35

1.1/0.9

2

2.2

41.1

4572

0.268/0.524

151

175

3X95+2X50

1.1/1.0

2

2.4

45.8

5841

0.193/0.387

186

210

3X120+2X70

1.2/1.1

2.5

2.6

52.1

7765

0.153/0.268

217

242

3X150+2X70

1.4/1.1

2.5

2.7

55.4

8758

0.124/0.268

245

270

3X185+2X95

1.6/1.1

2.5

2.8

60.8

10777

0.0991/0.193

284

305

3X240+2X120

1.7/1.2

2.5

3

67.4

13385

0.0754/0.153

336

350

3X300+2X150

1.8/1.4

2.5

3.2

73.6

16100

0.0601/0.124

389

396

Quality Control

Steel Wire Armoured Cable (SWA Cable) for Power Distribution Systems
Raw Material Test

Raw Material Test

Raw material testing for the Steel Wire Armoured Cable SWA 0.6/1kV CU/XLPE/SWA/PVC ensures full compliance with IEC 60502-1. Copper rods are tested for purity, conductivity (>99% IACS), and elongation. XLPE insulation compound is rigorously evaluated for density, melt flow index, antioxidant levels, and crosslinking potential using OIT and DSC analysis. Galvanized steel wires undergo zinc coating mass, tensile strength, and corrosion resistance tests. PVC sheath material is checked for thermal stability and hardness. The step-by-step process includes incoming batch verification, random sampling, chemical composition analysis via spectrometry, mechanical property testing before and after aging, armour corrosion pre-checks, and final material approval decision. Only qualified materials are released, guaranteeing the Steel Wire Armoured Cable SWA 0.6/1kV CU/XLPE/SWA/PVC achieves excellent conductivity, insulation integrity, strong armour protection, and long-term durability.

 

Process inspection

Process inspection

During manufacturing of the Steel Wire Armoured Cable SWA 0.6/1kV CU/XLPE/SWA/PVC, process inspection maintains strict quality control. Copper conductor stranding is monitored for compactness. XLPE insulation extrusion controls thickness and concentricity with online systems. PVC inner sheath prepares a smooth surface for armouring. Galvanized steel wire armouring verifies helical winding, tension balance, and coverage. Final PVC outer sheath extrusion includes real-time spark testing. Key steps include material pre-drying confirmation, extrusion and armouring parameter logging, intermediate hot set tests for crosslinking degree, armour gap and overlap checks, defect detection with immediate correction, and controlled cooling. This multi-stage oversight guarantees the Steel Wire Armoured Cable SWA 0.6/1kV CU/XLPE/SWA/PVC achieves void-free insulation, strong armour adhesion, precise construction, and full IEC 60502-1 compliance throughout production.

 

Finished Product

Finished Product

The finished Steel Wire Armoured Cable SWA 0.6/1kV CU/XLPE/SWA/PVC undergoes comprehensive testing. Routine tests include conductor resistance, AC voltage withstand (3.5kV), insulation and sheath thickness verification, and armour continuity checks. Mechanical tests cover crushing resistance, impact endurance, and tensile strength. Flame retardancy per IEC 60332-1 is verified. The process steps include sample preparation, gradual voltage ramp-up and hold period, mechanical load application (crushing and impact), environmental conditioning, post-test electrical and mechanical re-measurement, and detailed visual inspection. Additional checks cover shrinkage, heat shock, and marking durability. Only cables passing all criteria are approved, confirming the Steel Wire Armoured Cable SWA 0.6/1kV CU/XLPE/SWA/PVC’s superior mechanical protection, electrical safety, and suitability for demanding installations.

 

Application

Steel Wire Armoured Cable SWA 0.6/1kV is ideal for direct burial, underground ducts, and exposed installations in industrial plants, substations, commercial buildings, and infrastructure projects requiring strong mechanical protection and reliable low voltage power transmission.

Technical Advantages

● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions

Product Packaging

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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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