BS 6724 0.6/1kV LSZH Copper Conductor Multi-Core SWA Cable BASEC Approved, Flame Retardant, Low Smoke, Underground & Outdoor Power Wiring

Category

Details

Application

Multi-core LSZH cable with steel wire armour (SWA). Power and auxiliary fixed wiring cables for use in power networks, underground, outdoor and indoor applications, and for use in cable ducting. Suitable for installation where fire, smoke emission, and toxic fumes create a potential threat to life and equipment.

Voltage Rating Uo/U

0.6/1kV

Temperature Rating

Fixed installation: -20°C to +90°C

Minimum Bending Radius

1.5mm² to 16mm² - Fixed: 6 x overall diameter 25mm² and above - Fixed: 8 x overall diameter

Construction

Component

Material / Description

Conductor

Class 2 stranded copper conductor

Insulation

XLPE (Cross-Linked Polyethylene)

Bedding

LSZH (Low Smoke Zero Halogen)

Armour

SWA (Steel Wire Armour)

Sheath

LSZH (Low Smoke Zero Halogen)

Core Identification

2 core: Brown Blue

3 core: Brown Black Grey

3 core (optional): Green/Yellow Blue Brown

4 core: Brown Black Blue Grey

4 core (optional): Green/Yellow Brown Black Grey

5 core: Green/Yellow Brown Blue Black Grey

7 core and above: White cores with Black numbers

Sheath Colour

Black

Standards

Category

Details

Accreditation

BASEC approved products.

Tested and certified by BASEC, The British Approvals Service for Cables

Standards

BS 6724, EN/IEC 60228, EN/IEC 60502-1 Low Smoke Zero Halogen to EN/IEC 60754-1/2, EN/IEC 61034-2 Flame Retardant to EN/IEC 60332-1-2, EN/IEC 60332-3-24 Cat C, EN 50267-2-1 UV Resistant

Electrical Characteristics (XLPE/LSZH/SWA/LSZH)

Nom. Cross Section (mm²)

Two-Core (Single Phase) Amps

Three/Four-Core (Three Phase) Amps

Direct in Ground/Ducting Amps

1.5

27

29

25 / 21

2.5

36

39

33 / 28

4

49

52

44 / 36

6

62

66

53 / 44

10

85

90

71 / 58

16

110

115

91 / 75

25

146

152

116 / 96

35

180

188

139 / 115

50

219

228

164 / 135

70

279

291

203 / 167

95

338

354

239 / 197

120

392

410

271 / 223

150

451

472

306 / 251

185

515

539

343 / 281

240

607

636

395 / 324

300

698

732

446 / 365

400

787

847

-

Voltage Drop

Nom. Cross Section (mm²)

Two-Core DC (mV/A/m)

Two-Core AC (Single Phase)

Three/Four-Core AC (Three Phase)

1.5

31

31

27

2.5

19

19

16

4

12

12

10

6

7.9

7.9

6.8

10

4.7

4.7

4

16

2.9

2.9

2.5

25

1.85

1.85

1.65

35

1.35

1.35

1.15

50

0.98

0.99

0.87

70

0.67

0.67

0.60

95

0.49

0.50

0.45

120

0.39

0.40

0.37

150

0.31

0.32

0.30

185

0.25

0.26

0.26

240

0.195

0.20

0.21

300

0.155

0.16

0.185

400

0.12

0.13

0.165

DIMENSIONS

In Indonesia, reliable electrical power distribution is crucial for both industrial and infrastructure projects. Choosing the right cable for underground and outdoor installations is not just about meeting electrical requirements—it’s also about safety, fire resistance, durability, and compliance with international standards. Among the top-performing options is the BS 6724 0.6/1kV LSZH Copper Conductor Multi-Core SWA Cable, a BASEC-approved, flame-retardant, low-smoke cable widely used for power and auxiliary wiring in demanding environments.

What Are the Key Materials Used in BS 6724 LSZH SWA Cables?

The performance of a cable depends on the quality of its materials:

  1. Copper Conductor: Class 2 stranded copper is used for its excellent electrical conductivity and flexibility. Stranded conductors reduce the risk of breakage during bending.

  2. XLPE Insulation: Cross-linked polyethylene is thermally stable and resistant to moisture, chemicals, and abrasion.

  3. LSZH Bedding and Sheath: Low Smoke Zero Halogen material minimizes toxic emissions during fires, protecting personnel and sensitive equipment.

  4. Steel Wire Armour (SWA): Provides high mechanical strength, especially important for underground and outdoor installations.

These materials make BS 6724 SWA cables both durable and safe in hazardous environments.

Where Can BS 6724 LSZH SWA Cables Be Applied?

BS 6724 cables are versatile and suitable for:

  • Underground Power Distribution: Ideal for mining, subways, and tunneling projects

  • Outdoor Electrical Networks: Weather-resistant for industrial plants, ports, and infrastructure

  • Indoor Fixed Wiring: Safe for high-occupancy buildings where low smoke emission is critical

  • Cable Ducting Systems: Easy to install in conduits with fire and mechanical safety requirements

In Indonesia, they are increasingly used in industrial zones, high-rise buildings, and large-scale infrastructure projects, where fire safety and durability are essential.


How Are BS 6724 SWA Cables Installed Safely?

Proper installation ensures performance and longevity:

  1. Minimum Bending Radius: Respect 6x or 8x the overall diameter depending on cable size.

  2. Support Spacing: Use cable cleats or brackets to prevent sagging, especially for heavy multi-core cables.

  3. Avoid Sharp Edges: Protect the sheath and armour when pulling through conduits.

  4. Terminations: Use appropriate glands rated for SWA LSZH cables.

  5. Segregation: Separate power cables from sensitive signal/data cables to reduce electromagnetic interference.

Following these guidelines ensures safe, long-lasting installations.


What Are Common Questions About BS 6724 SWA LSZH Cables?

What Makes LSZH Sheaths Safer than PVC?

LSZH (Low Smoke Zero Halogen) sheaths reduce smoke density and toxic gas emission in case of fire, making evacuation safer and protecting sensitive equipment. PVC may emit corrosive gases and dense smoke.

Can BS 6724 Cables Be Buried Directly in the Ground?

Yes, but ensure proper bedding and separation from sharp rocks or aggressive soils. Direct burial is suitable due to the SWA armour providing mechanical protection.

How Do I Choose the Right Core and Cross-Section Size?

Selection depends on load current, installation method (air, duct, or buried), and voltage drop considerations. Refer to the current-carrying tables and voltage drop values provided above.

Are BS 6724 SWA Cables BASEC Approved?

Yes. BASEC (British Approvals Service for Cables) ensures compliance with international safety and performance standards. This certification guarantees reliability and global acceptance.

Can BS 6724 Cables Withstand Tropical Climate Conditions?

Yes. The XLPE insulation and LSZH sheath provide resistance to high temperatures, humidity, and UV exposure, making them suitable for Indonesian conditions.


How Do BS 6724 SWA LSZH Cables Perform in Real-World Indonesian Projects?

Case Study: Jakarta Underground Metro Project

In a recent metro expansion, BS 6724 0.6/1kV 4-core 50mm² SWA LSZH cables were used for tunnel power distribution. Benefits observed:

  • Minimal fire risk due to low smoke emission.

  • Long-term mechanical protection against tunnel construction vibrations.

  • Reliable current delivery with negligible voltage drop over 1 km runs.

  • Easy installation with standard cable cleats and glands.

This demonstrates that BS 6724 SWA LSZH cables are well-suited for large-scale, safety-critical infrastructure projects in Indonesia.


How Does BS 6724 Compare With Other Multi-Core Power Cables?

Feature

BS 6724 SWA LSZH

PVC Insulated SWA

Non-Armoured LSZH

Fire Performance

High

Moderate

High

Smoke Emission

Low

High

Low

Mechanical Protection

SWA

SWA

None

Suitable for Underground

Yes

Yes

Limited

BASEC Approval

Yes

Optional

Optional

Cost

Medium

Low

Medium

BS 6724 offers the best balance of fire safety, mechanical protection, and international certification for critical applications.


Why Should You Choose BS 6724 0.6/1kV SWA LSZH Cable?

Choosing BS 6724 SWA LSZH cable ensures:

  • Safety: Flame-retardant and low smoke reduces risk to life and equipment.

  • Durability: Armour protects against mechanical damage underground or outdoors.

  • Compliance: BASEC approved and compliant with international standards.

  • Versatility: Suitable for industrial, commercial, and infrastructure applications.

  • Performance: Reliable electrical parameters for current carrying and voltage drop.


For engineers and project managers in Indonesia looking for a safe, reliable, and durable cable solution, BS 6724 0.6/1kV LSZH Copper Conductor Multi-Core SWA Cable is a proven choice. Contact your local distributor to explore specifications, custom core sizes, and installation support for your next project.