1.9/3.3kV BS 6724 SWA LSZH Cable
1.9/3.3kV BS 6724 SWA LSZH Cable is a Class 2 stranded copper XLPE insulated SWA power cable complying with BS 6724 and IEC/EN 60502-1 standards. Manufactured with high-conductivity Class 2 stranded plain copper conductors and thermally resilient Cross-Linked Polyethylene (XLPE) insulation, it supports continuous conductor operating temperatures up to +90°C.
What is BS 6724 Copper SWA LSZH 1.9/3.3kV Cable?
1.9/3.3kV BS 6724 SWA LSZH Cable is a Class 2 stranded copper XLPE insulated SWA power cable complying with BS 6724 and IEC/EN 60502-1 standards.
Designed for medium-voltage fixed power distribution in safety-sensitive environments, it features Class 2 stranded plain copper conductors, XLPE insulation, HFFR filler, Galvanized Steel Wire Armour (SWA), and a black HFFR outer sheath. In fire conditions, it provides high mechanical endurance combined with low smoke and zero halogen emissions to protect personnel and sensitive electronic infrastructure.
BS 6724 Copper SWA LSZH 1.9/3.3kV Cable Construction
- Conductor: Class 2 stranded copper
- Insulation: XLPE (Cross-Linked Polyethylene)
- Filler: HFFR (Halogen free flame retardant)
- Armour: SWA (Galvanised Steel Wire Armour)
- Outer Sheath: HFFR (Halogen free flame retardant)
- Core Identification: Brown, Black, Grey
- Sheath Colour: Black
Applications
BS 6724 Copper SWA LSZH 1.9/3.3kV Cable is designed for power networks, auxiliary control, and public infrastructure installations where fire safety regulations mandate low smoke and toxic gas prevention. Key application environments include:
- Underground, outdoor, and fixed indoor electrical power distribution networks
- Cable ducting, trenches, and cable tray systems
- Public buildings, commercial complexes, and enclosed transport infrastructure
- Industrial installations requiring mechanical protection against physical impact
Specifications & Dimensions
| NO. OF CORES | NOMINAL CROSS SECTIONAL AREA (mm²) | NOMINAL DIAMETER OF CONDUCTOR (mm) | NOMINAL THICKNESS OF INSULATION (mm) | MINMUM THICKNESS OF OUTER SHEATH (mm) | NOMINAL OUTER DIAMETER (mm) | NOMINAL WEIGHT (kg/km) |
| 3 | 10 | 3.85 | 2 | 1.24 | 23 | 1545 |
| 3 | 16 | 4.7 | 2 | 1.24 | 27 | 1680 |
| 3 | 25 | 5.85 | 2 | 1.24 | 30 | 2100 |
| 3 | 35 | 6.9 | 2 | 1.32 | 32 | 2530 |
Standards
- Design Standards: BS 6724, IEC/EN 60502-1
- Conductor Standard: IEC/EN 60228
- Low Smoke Zero Halogen: IEC/EN 61034, IEC/EN 60754
- Flame Retardancy: EN/IEC 60332-1
- Voltage Rating (Uo/U): 1.9/3.3kV
- Maximum Operating Temperature: +90°C
- Maximum Short-Circuit Temperature: +250°C
- Minimum Bending Radius: 12 x overall diameter
- Regulatory Compliance: CPR Compliant (EN 50575), Low Voltage Directive 2014/35/EU, RoHS Directive 2015/65/EU, REACH Directive EC 1907/2006, CE, UKCA
Frequently Asked Questions
Q: What does LSZH stand for in BS 6724 cables?
A: LSZH stands for Low Smoke Zero Halogen. In the event of a fire, the HFFR sheath emits minimal smoke and virtually no toxic or corrosive halogen gases, safeguarding human life and sensitive equipment.
Q: Can BS 6724 SWA cable be installed outdoors and in underground ducts?
A: Yes, it is rated for outdoor, underground, and cable ducting applications, featuring a UV-resistant outer sheath and steel wire armour for mechanical protection.
Q: What is the maximum operating temperature for this cable?
A: The XLPE insulation allows for a maximum continuous conductor operating temperature of +90°C and a short-circuit temperature limit of +250°C.
Q: What is the standard production lead time?
A: Our standard production lead time ranges from 15 to 25 working days, depending on the required cross-sectional size, order volume, and packaging specifications.
BS6724 Cable Why Choose Huadong Cable?
Huadong Cable Group is a professional manufacturer and exporter of heavy-duty and LSZH power cables with over 20 years of manufacturing experience. We deliver factory-direct pricing, rigorous testing in accordance with international standards, and official MTC (Material Test Certificate) documentation with every batch.
Our production capabilities include customizable drum lengths, ISPM 15 compliant export wooden or steel-wooden drum packaging, and complete supply chain solutions for global contractors, EPC engineering projects, and industrial buyers.
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Our comprehensive product includes high-quality power cables, aerial insulated cables (ABC cables), marine cables, flame-retardant & fire-resistant cables, and low-smoke halogen-free (LSZH) cables. We also specialize in rubber cables, high-temperature resistant cables, instrument & control cables, solar/photovoltaic cables, and customized wiring solutions for diverse industrial applications.
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