BS 7835 XLPE AWA/SWA LSZH MV Cable
BS 7835 XLPE AWA/SWA LSZH Medium Voltage Cable is a high-reliability Class 2 stranded copper XLPE insulated armoured power cable complying with BS 7835, IEC/EN 60502-2, and IEC/EN 60228 standards across 3.8/6.6kV, 6.35/11kV, and 19/33kV voltage ratings. Engineered with circular stranded compacted copper conductors, semi-conductive conductor and insulation screens, XLPE insulation, metallic copper shielding, and Low Smoke Zero Halogen (LSZH) inner sheath protection, this cable supports continuous conductor operating temperatures up to +90°C and short-circuit limits up to +250°C.
What is BS 7835 Copper XLPE AWA/SWA LSZH Medium Voltage Cable?
BS 7835 Copper XLPE AWA/SWA LSZH Medium Voltage Cable is a Class 2 stranded copper XLPE insulated armoured power cable complying with BS 7835, IEC/EN 60502-2, and IEC/EN 60228 standards across 3.8/6.6kV, 6.35/11kV, and 19/33kV voltage ratings.
Engineered for medium-voltage fixed power distribution in safety-critical public and industrial infrastructure, this cable features Class 2 stranded circular compacted copper conductors, inner semi-conductive screening, XLPE insulation, outer semi-conductive screening, and a copper metallic screen. Depending on core configuration, single-core constructions utilize non-magnetic Aluminium Wire Armour (AWA) to avoid magnetic induction losses, while multi-core constructions feature Galvanised Steel Wire Armour (SWA) for crushing resistance. Enclosed in a flame-retardant LSZH outer sheath, it delivers mechanical durability combined with zero halogen acid gas emissions and low smoke density under fire exposure.
BS 7835 XLPE AWA/SWA LSZH MV Cable Construction
- Conductor: Class 2 Stranded Circular Compacted Copper
- Conductor Screen: Semi-Conductive XLPE (Cross-Linked Polyethylene)
- Insulation: XLPE (Cross-Linked Polyethylene)
- Insulation Screen: Semi-Conductive XLPE (Cross-Linked Polyethylene)
- Metallic Screen: Copper Wires/Tape Screen
- Bedding / Inner Sheath: LSZH (Low Smoke Zero Halogen)
- Armour (Single Core): AWA (Aluminium Wire Armour)
- Armour (Multi Core): SWA (Galvanised Steel Wire Armour)
- Outer Sheath: LSZH (Low Smoke Zero Halogen)
- Sheath Colour Options: Red, Black
Applications
BS 7835 Copper XLPE AWA/SWA LSZH Cable is specified for fixed power distribution in primary medium-voltage utility networks, underground infrastructure, and public-facing commercial environments requiring 3.8/6.6kV, 6.35/11kV, or 19/33kV power transmission where fire, toxic fumes, and smoke emissions present potential threats. Key installation environments include:
- Direct burial in ground and underground cable ducting networks
- Public buildings, mass transit hubs, tunnels, and airport infrastructure
- Outdoor and indoor fixed installations on cable trays or ladders
- Substation connections and industrial manufacturing facilities
Specifications & Dimensions
| NO. OF CORES | NOMINAL CROSS SECTIONAL AREA (mm²) | NOMINAL OVERALL DIAMETER (mm) | NOMINAL WEIGHT (kg/km) |
| BS 7835 LSZH 3.8/6.6 (7.2)kV Cable | |||
| 1 | 35 | 24.3 | 1023 |
| 1 | 50 | 25.5 | 1171 |
| 1 | 70 | 27.3 | 1418 |
| 1 | 95 | 29.2 | 1719 |
| 1 | 120 | 31.1 | 2013 |
| 1 | 150 | 32.3 | 2386 |
| 1 | 185 | 35 | 2866 |
| 1 | 240 | 37.7 | 3486 |
| 1 | 300 | 41.7 | 4256 |
| 1 | 400 | 47.1 | 5406 |
| 1 | 500 | 51.9 | 6693 |
| 1 | 630 | 55.8 | 8212 |
| 3 | 50 | 48 | 4500 |
| 3 | 70 | 52 | 5500 |
| 3 | 95 | 56 | 6500 |
| 3 | 120 | 60 | 7500 |
| 3 | 150 | 63 | 8500 |
| 3 | 185 | 67 | 10000 |
| 3 | 240 | 74 | 13000 |
| 3 | 300 | 80 | 15500 |
| 3 | 400 | 89 | 19000 |
| NO. OF CORES | NOMINAL CROSS SECTIONAL AREA (mm²) | NOMINAL INSULATION THICKNESS (mm) | NOMINAL SHEATH THICKNESS (mm) | DIAMETER Under Armour (mm) | DIAMETER Over Armour (mm) | DIAMETER Overall (mm) | NOMINAL WEIGHT (kg/km) |
| BS 7835 XLPE LSZH 6.35/11 (12)kV Cable | |||||||
| 1 | 50 | 3.4 | 1.8 | 21.7 | 24.9 | 28.5 | 1200 |
| 1 | 70 | 3.4 | 1.9 | 23 | 26.2 | 30 | 1500 |
| 1 | 95 | 3.4 | 1.9 | 24.7 | 27.9 | 31.7 | 1600 |
| 1 | 120 | 3.4 | 2 | 26.7 | 29.9 | 33.9 | 2100 |
| 1 | 150 | 3.4 | 2.1 | 27.5 | 31.5 | 35.7 | 2500 |
| 1 | 185 | 3.4 | 2.1 | 29.3 | 33.3 | 37.5 | 2900 |
| 1 | 240 | 3.4 | 2.2 | 31.6 | 35.6 | 40 | 3600 |
| 1 | 300 | 3.4 | 2.2 | 34.6 | 38.6 | 43 | 4300 |
| 1 | 400 | 3.4 | 2.4 | 37 | 41 | 45.8 | 5200 |
| 1 | 500 | 3.4 | 2.5 | 40.5 | 45.5 | 50.5 | 6500 |
| 1 | 630 | 3.4 | 2.6 | 44.6 | 49.6 | 54.8 | 8000 |
| 1 | 800 | 3.4 | 2.7 | 48.8 | 53.8 | 59.2 | 9850 |
| 1 | 1000 | 3.4 | 2.9 | 53.5 | 58.5 | 64.3 | 12100 |
| 3 | 35 | 3.4 | 2.5 | 41.6 | 46.6 | 51.6 | 4700 |
| 3 | 50 | 3.4 | 2.6 | 44.4 | 49.4 | 54.6 | 5300 |
| 3 | 70 | 3.4 | 2.7 | 48.1 | 53.1 | 58.5 | 6300 |
| 3 | 95 | 3.4 | 2.8 | 52 | 57 | 62.6 | 7300 |
| 3 | 120 | 3.4 | 3 | 55.6 | 60.6 | 66.6 | 8400 |
| 3 | 150 | 3.4 | 3.1 | 58.6 | 63.6 | 69.8 | 9600 |
| 3 | 185 | 3.4 | 3.2 | 62.7 | 67.7 | 74.1 | 11000 |
| 3 | 240 | 3.4 | 3.4 | 68.1 | 74.4 | 81.2 | 14000 |
| 3 | 300 | 3.4 | 3.6 | 73.5 | 79.8 | 87 | 16600 |
| 3 | 400 | 3.4 | 3.8 | 78.3 | 84.6 | 92.2 | 20000 |
| BS 7835 XLPE/LSZH Medium Voltage 19/33 (36)kV Cable | |||||||
| 1 | 70 | 8 | 2.2 | 32.6 | 36.6 | 41 | 2300 |
| 1 | 95 | 8 | 2.3 | 34.3 | 38.3 | 42.9 | 2650 |
| 1 | 120 | 8 | 2.3 | 35.9 | 39.9 | 44.5 | 3000 |
| 1 | 150 | 8 | 2.4 | 37.5 | 42.5 | 47.3 | 3500 |
| 1 | 185 | 8 | 2.5 | 39.3 | 44.3 | 49.3 | 4000 |
| 1 | 240 | 8 | 2.5 | 41.7 | 46.7 | 51.7 | 4650 |
| 1 | 300 | 8 | 2.6 | 44.2 | 49.2 | 54.4 | 5450 |
| 1 | 400 | 8 | 2.7 | 47.3 | 52.3 | 57.7 | 6350 |
| 1 | 500 | 8 | 2.8 | 50.5 | 55.5 | 61.1 | 7600 |
| 1 | 630 | 8 | 2.9 | 54.2 | 59.2 | 65 | 9150 |
| 1 | 800 | 8 | 3.1 | 60.5 | 65.5 | 71.6 | 11100 |
| 1 | 1000 | 8 | 3.2 | 65 | 70 | 76.5 | 13400 |
| 3 | 50 | 8 | 3.4 | 65.1 | 71.4 | 78.2 | 9150 |
| 3 | 70 | 8 | 3.5 | 68.8 | 75.1 | 82.1 | 10300 |
| 3 | 95 | 8 | 3.6 | 72.6 | 78.9 | 86.1 | 11600 |
| 3 | 120 | 8 | 3.7 | 76.3 | 82.6 | 90 | 12800 |
| 3 | 150 | 8 | 3.8 | 79.3 | 85.6 | 93.2 | 14050 |
| 3 | 185 | 8 | 3.9 | 83.4 | 89.7 | 97.5 | 15650 |
| 3 | 240 | 8 | 4.1 | 88.8 | 95.1 | 103.3 | 18200 |
| 3 | 300 | 8 | 4.3 | 93.9 | 100.2 | 108.8 | 21100 |
| 3 | 400 | 8 | 4.5 | 100.8 | 107.1 | 116.1 | 24200 |
Standards
- Design Standards: BS 7835, IEC/EN 60502-2
- Conductor Standard: IEC/EN 60228
- Low Smoke Zero Halogen: IEC/EN 60754-1/2, IEC/EN 61034-1/2
- Flame Retardancy: IEC/EN 60332-1-2, IEC/EN 60332-3-24
- Voltage Ratings (Uo/U): 3.8/6.6 (7.2)kV, 6.35/11 (12)kV, 19/33 (36)kV
- Temperature Rating (Fixed): -15°C to +90°C
- Maximum Short-Circuit Temperature: +250°C (for 5 seconds)
- Minimum Bending Radius: Single Core: 15 x overall diameter; Multi Core: 12 x overall diameter
- Regulatory Compliance: RoHS Directive 2015/65/EU, REACH Directive EC 1907/2006, CE, UKCA
Frequently Asked Questions
Q: What does LSZH mean in BS 7835 medium-voltage cables?
A: LSZH stands for Low Smoke Zero Halogen. The sheath and bedding compounds emit minimal light-obscuring smoke and virtually no corrosive halogen gas during fire conditions, protecting personnel evacuations and sensitive electronics.
Q: What voltage ratings are specified under the BS 7835 standard?
A: BS 7835 covers medium-voltage LSZH armoured cables operating at 3.8/6.6 (7.2)kV, 6.35/11 (12)kV, and 19/33 (36)kV ratings.
Q: Why do single-core BS 7835 cables use Aluminium Wire Armour (AWA) instead of Steel Wire Armour (SWA)?
A: Single-core AC cables use non-magnetic Aluminium Wire Armour (AWA) to eliminate induced eddy current loops and magnetic heating, whereas multi-core cables utilize Galvanised Steel Wire Armour (SWA).
Q: What is the standard production lead time?
A: Our standard production lead time ranges from 15 to 25 working days, depending on cable cross-section, total order quantity, and drum packaging specifications.
BS7835 XLPE Cable Why Choose Huadong Cable?
Huadong Cable Group is a trusted manufacturer and international exporter of medium-voltage LSZH power cables with over two decades of technical expertise. We offer factory-direct manufacturing, comprehensive testing per international standards, and complete MTC (Material Test Certificate) documentation with every shipment.
Our manufacturing capabilities cover full customization across 3.8/6.6kV, 6.35/11kV, and 19/33kV voltage levels, custom 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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