Draka Saffire BS6724 SWA Armoured Zero Halogen Low Smoke Cables
Low Smoke Zero Halogen Cables
Draka Saffire BS6724
Prysmian Draka Saffire BS6724 SWA is a zero halogen, low smoke armoured power cable for industrial wiring and mains distribution where thick black smoke and acid emission would pose a major hazard during a fire.
Saffire BS6724 SWA cables are LU approved and are designed for use in public areas and can be installed within cable ducts, clipped directly to a surface, on trays, in baskets or free air. Additionally, the cables can be laid direct in ground in free draining soil and embedded in concrete.
➡ See also 6242B | 6491B | Railsure LU Cables
Draka Saffire BS6724
Technical data
The following table provides a brief overview of the cable construction dimensions for the BS6724 type cable manufactured by Draka as part of the Saffire range of low smoke zero halogen cables – for fire resistant cables consult the Draka Firetuf range.
Cable Construction | |
Conductors | Stranded plain annealed copper wire (Class 2) to BS EN 60228 |
Insulation | XLPE |
Binder | Polyester tape |
Bedding | Zero halogen, low smoke (0HLS) |
Armour | Galvanised steel wire armour (aluminium wire armour for single core) |
Sheath | Zero halogen, low smoke (0HLS) |
Core Colours | Single Core: Brown or blue Two Core: Brown and blue Three Core: Brown, black and grey Four Core: Brown, black, grey and blue Five Core: Brown, black, grey, blue and green/yellow |
Sheath Colour | Black |
Physical Characteristics | |
Voltage Rating (Uo/U) | 600/1000V |
Maximum Conductor Temperature | 90ºC Note: Where a conductor operates at a temperature exceeding 70ºC it shall be ascertained that the equipment connected to the conductor is suitable for the conductor operating temperature (see regulation 512-1-5 of BS7671, the 17th Edition of IEE Wiring Regulations) |
Minimum Bending Radius | 6D circular conductors 8D shaped conductors |
Current Rating | Refers to tables 4E4A & 4E4B in BS7671 or ERA 69-30 Part V |
Performance Characteristics | |
Smoke Emission | BS EN 61034-2 |
Acid Gas Emission | BS EN 50267-2-1 |
Flame Propagation | BS EN 60332-3-24 |
Single Core 694AWLSH cables
Low Smoke Zero Halogen
Nominal Area of Conductor (sqmm) | Armour Wire Diameter (mm) | Approx Diameter Under Armour (mm) | Approx Overall Diameter (mm) | Approx Cable Weight (kg/km) | Maximum Conductor Resistance | Nominal Area of Armour (sqmm) | Maximum Armour Resistance at 20ºC (Ω/km) | |
DC at 20ºC (Ω/km) | AC at 90ºC (Ω/km) | |||||||
120* | 1.25 | 17.7 | 24.2 | 1540 | 0.1530 | 0.1962 | 52 | 0.61 |
150* | 1.6 | 19.5 | 26.2 | 1840 | 0.1240 | 0.1594 | 76 | 0.42 |
185* | 1.6 | 21.6 | 28.4 | 2230 | 0.0991 | 0.1280 | 84 | 0.38 |
240* | 1.6 | 23.8 | 30.6 | 2800 | 0.0754 | 0.0985 | 94 | 0.34 |
300* | 1.6 | 26.4 | 33.4 | 3435 | 0.0601 | 0.0797 | 104 | 0.31 |
400* | 2.0 | 30.1 | 38.1 | 4385 | 0.0470 | 0.0635 | 147 | 0.22 |
500* | 2.0 | 33.9 | 42.1 | 5535 | 0.0366 | 0.0513 | 163 | 0.20 |
630* | 2.0 | 38.2 | 46.6 | 6990 | 0.0283 | 0.0419 | 182 | 0.18 |
800* | 2.5 | 43.4 | 53.2 | 9170 | 0.0221 | 0.0349 | 260 | 0.13 |
1000* | 2.5 | 48.3 | 58.2 | 11355 | 0.0176 | 0.0303 | 284 | 0.12 |
*Circular conductor
Two Core 6942LSH cables
Low Smoke Zero Halogen
Nominal Area of Conductor (sqmm) | Armour Wire Diameter (mm) | Approx Diameter Under Armour (mm) | Approx Overall Diameter (mm) | Approx Cable Weight (kg/km) | Maximum Conductor Resistance | Nominal Area of Armour (sqmm) | Maximum Armour Resistance at 20ºC (Ω/km) | |
DC at 20ºC (Ω/km) | AC at 90ºC (Ω/km) | |||||||
1.5* | 0.9 | 6.9 | 10.8 | 240 | 12.1 | 15.428 | 15 | 10.2 |
2.5* | 0.9 | 8.2 | 12.2 | 305 | 7.41 | 9.448 | 17 | 8.8 |
4* | 0.9 | 9.3 | 13.3 | 370 | 4.61 | 5.878 | 19 | 7.9 |
6* | 0.9 | 10.4 | 14.4 | 445 | 3.08 | 3.927 | 22 | 7 |
10* | 0.9 | 12.0 | 16.2 | 580 | 1.83 | 2.333 | 26 | 6 |
16* | 1.25 | 14.1 | 19.0 | 870 | 1.15 | 1.466 | 42 | 3.7 |
25 | 1.25 | 15.1 | 20.7 | 1090 | 0.727 | 0.926 | 42 | 3.7 |
35 | 1.6 | 16.7 | 23.2 | 1470 | 0.524 | 0.6685 | 60 | 2.6 |
50 | 1.6 | 19.2 | 25.9 | 1845 | 0.387 | 0.494 | 68 | 2.3 |
70 | 1.6 | 22.2 | 29.0 | 2385 | 0.268 | 0.3412 | 80 | 2 |
95 | 2.0 | 23.8 | 31.3 | 3025 | 0.193 | 0.2471 | 113 | 1.4 |
120 | 2.0 | 27.2 | 34.8 | 3675 | 0.153 | 0.1964 | 125 | 1.3 |
150 | 2.0 | 29.7 | 37.5 | 4330 | 0.124 | 0.1597 | 138 | 1.2 |
185 | 2.5 | 33.1 | 42.3 | 5635 | 0.0991 | 0.1284 | 191 | 0.82 |
240 | 2.5 | 37.8 | 47.2 | 7000 | 0.0754 | 0.0989 | 215 | 0.73 |
300 | 2.5 | 42.1 | 51.7 | 8480 | 0.0601 | 0.0801 | 235 | 0.67 |
400 | 2.5 | 46.9 | 56.8 | 10390 | 0.047 | 0.0641 | 265 | 0.59 |
*Circular conductor, all others are shaped conductors
Three Core 6943LSH cables
Low Smoke Zero Halogen
Nominal Area of Conductor (sqmm) | Armour Wire Diameter (mm) | Approx Diameter Under Armour (mm) | Approx Overall Diameter (mm) | Approx Cable Weight (kg/km) | Maximum Conductor Resistance | Nominal Area of Armour (sqmm) | Maximum Armour Resistance at 20ºC (Ω/km) | |
DC at 20ºC (Ω/km) | AC at 90ºC (Ω/km) | |||||||
1.5* | 0.9 | 7.4 | 11.2 | 265 | 12.1 | 15.428 | 16 | 9.5 |
2.5* | 0.9 | 8.7 | 12.7 | 340 | 7.41 | 9.448 | 19 | 8.2 |
4* | 0.9 | 9.9 | 13.9 | 420 | 4.61 | 5.878 | 20 | 7.5 |
6* | 0.9 | 11.1 | 15.1 | 510 | 3.08 | 3.927 | 23 | 6.7 |
10* | 1.25 | 12.8 | 17.7 | 780 | 1.83 | 2.333 | 39 | 4 |
16* | 1.25 | 15.1 | 20.1 | 1035 | 1.15 | 1.466 | 45 | 3.5 |
25* | 1.6 | 18.9 | 25.2 | 1715 | 0.727 | 0.926 | 62 | 2.5 |
35* | 1.6 | 21.2 | 27.7 | 2120 | 0.524 | 0.6685 | 68 | 2.3 |
50 | 1.6 | 22.1 | 28.8 | 2410 | 0.387 | 0.494 | 78 | 2 |
70 | 1.6 | 25.3 | 32.1 | 3160 | 0.268 | 0.3412 | 90 | 1.8 |
95 | 2.0 | 28.3 | 36.0 | 4100 | 0.193 | 0.2471 | 128 | 1.3 |
120 | 2.0 | 31.4 | 39.3 | 4980 | 0.153 | 0.1964 | 141 | 1.2 |
150 | 2.5 | 35.3 | 44.3 | 6340 | 0.124 | 0.1597 | 201 | 0.78 |
185 | 2.5 | 39.1 | 48.3 | 7590 | 0.0991 | 0.1284 | 220 | 0.71 |
240 | 2.5 | 43.9 | 53.5 | 9575 | 0.0754 | 0.0989 | 250 | 0.63 |
300 | 2.5 | 48.7 | 58.4 | 11585 | 0.0601 | 0.0801 | 269 | 0.58 |
400 | 2.5 | 54.4 | 64.5 | 14345 | 0.047 | 0.0641 | 304 | 0.52 |
*Circular conductor, all others are shaped conductors
Four Core 6944LSH Cables
Low Smoke Zero Halogen
Nominal Area of Conductor (sqmm) | Armour Wire Diameter (mm) | Approx Diameter Under Armour (mm) | Approx Overall Diameter (mm) | Approx Cable Weight (kg/km) | Maximum Conductor Resistance | Nominal Area of Armour (sqmm) | Maximum Armour Resistance at 20ºC (Ω/km) | |
DC at 20ºC (Ω/km) | AC at 90ºC (Ω/km) | |||||||
1.5* | 0.9 | 8.4 | 11.9 | 300 | 12.1 | 15.428 | 17 | 8.8 |
2.5* | 0.9 | 9.6 | 13.6 | 385 | 7.41 | 9.448 | 20 | 7.7 |
4* | 0.9 | 10.9 | 14.9 | 480 | 4.61 | 5.878 | 22 | 6.8 |
6* | 1.25 | 12.3 | 17.2 | 690 | 3.08 | 3.927 | 36 | 4.3 |
10* | 1.25 | 14.2 | 19.0 | 920 | 1.83 | 2.333 | 42 | 3.7 |
16* | 1.25 | 16.7 | 21.8 | 1240 | 1.15 | 1.466 | 50 | 3.1 |
25* | 1.6 | 21.1 | 27.4 | 1990 | 0.727 | 0.926 | 70 | 2.3 |
35* | 1.6 | 23.6 | 30.1 | 2475 | 0.524 | 0.6685 | 78 | 2 |
50 | 1.6 | 24.3 | 31.1 | 2965 | 0.387 | 0.494 | 90 | 1.8 |
70 | 2.0 | 28.5 | 36.2 | 4040 | 0.268 | 0.3412 | 131 | 1.2 |
95 | 2.0 | 32.0 | 39.9 | 5170 | 0.193 | 0.2471 | 147 | 1.1 |
120 | 2.5 | 35.9 | 44.9 | 6675 | 0.153 | 0.1964 | 206 | 0.76 |
150 | 2.5 | 39.9 | 49.1 | 7965 | 0.124 | 0.1597 | 230 | 0.68 |
185 | 2.5 | 44.4 | 53.9 | 9655 | 0.0991 | 0.1284 | 255 | 0.61 |
240 | 2.5 | 49.7 | 59.4 | 12195 | 0.0754 | 0.0989 | 289 | 0.54 |
300 | 2.5 | 55.2 | 65.3 | 14820 | 0.0601 | 0.0801 | 319 | 0.49 |
400 | 3.15 | 62.1 | 74.0 | 19200 | 0.047 | 0.0641 | 452 | 0.35 |
*Circular conductor, all others are shaped conductors
Five Core 6945LSH cables
Low Smoke Zero Halogen
Nominal Area of Conductor (sqmm) | Armour Wire Diameter (mm) | Approx Diameter Under Armour (mm) | Approx Overall Diameter (mm) | Approx Cable Weight (kg/km) | Maximum Conductor Resistance | Nominal Area of Armour (sqmm) | Maximum Armour Resistance at 20ºC (Ω/km) | |
DC at 20ºC (Ω/km) | AC at 90ºC (Ω/km) | |||||||
1.5* | 0.9 | 8.9 | 12.9 | 345 | 12.1 | 15.428 | 19 | 8.2 |
2.5* | 0.9 | 10.6 | 14.6 | 440 | 7.41 | 9.448 | 22 | 6.8 |
4* | 0.9 | 12.0 | 16.3 | 565 | 4.61 | 5.878 | 25 | 6.2 |
6* | 1.25 | 13.6 | 18.5 | 795 | 3.08 | 3.927 | 40 | 3.9 |
10* | 1.25 | 15.6 | 20.8 | 1080 | 1.83 | 2.333 | 46 | 3.4 |
16* | 1.6 | 18.9 | 24.8 | 1610 | 1.15 | 1.466 | 72 | 2.2 |
25* | 1.6 | 22.8 | 29.2 | 2310 | 0.727 | 0.926 | 88 | 1.8 |
35* | 1.6 | 25.6 | 32.3 | 2915 | 0.524 | 0.6685 | 100 | 1.6 |
*Circular conductor, all others are shaped conductors

Low Smoke Zero Halogen Cable

London Underground LU Rail Cables, Glands & Cleats
Cable Accessories for Low Smoke Zero Halogen Cables
To maintain the circuit integrity of low smoke zero halogen (LSZH) cables, T&D distribute a complete range of Prysmian cable accessories for LSZH cables including cable glands, cable cleats, duct sealing and joints.
➡ See the complete range of Prysmian cable accessories for low, medium and high voltage cables – this includes MV HV joints, terminations and connectors for power systems at 11kV, 33kV and 66kV.