Draka Saffire 6491B Single Core Zero Halogen Low Smoke Cables
Low Smoke Zero Halogen Cables
Draka Saffire 6491B
Prysmian Draka Saffire 6491B is a zero halogen, low smoke power cable ideal for part of the wiring for non-emergency systems in public buildings where reduction in the volume of smoke and acid gas emission would be beneficial.
Saffire 6491B cables can be installed within conduit, trunking or inside fixed protected environments, such as appliances, switchgear and control gear.
➡ See also BS6724 | 6242B | Railsure LU Cables 
Draka Saffire 6491B Cable
Technical Specification
| Cable Construction | |
| Manufacturing Standard | BS EN 50525-3-41 |
| Harmonised Code | H07Z-R |
| Conductors | Stranded plain annealed copper wire (Class 2) to BS EN 60228 |
| Insulation | An extruded layer of cross-linked Zero Halogen, Low Smoke (0HLS) compound |
| Physical Characteristics | |
| Voltage Rating (Uo/U) | 450/750V |
| 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 | 6 x overall diameter of cable |
| Current Rating | Refers to tables 4E1A & 4E1B in BS7671 |
| Performance Characteristics | |
| Smoke Emission | BS EN 61034-2 |
| Acid Gas Emission | BS EN 50267-2-1 |
| Flame Propagation | BS EN 60332-1-2 |
Single Core 6491B cables
Technical Data
The following table provides a brief overview of the cable construction dimensions for the 6491B 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.
| Nominal Area of Conductor (mm²) | Insulation Thickness (mm) | Approx. Overall Diameter (mm) | Approx. Cable Weight (kg/km) | Maximum Conductor Resistance at 20ºC (Ω/km) |
| 1.5 | 0.7 | 3.1 | 25 | 12.10 |
| 2.5 | 0.8 | 3.7 | 35 | 7.41 |
| 4 | 0.8 | 4.2 | 50 | 4.61 |
| 6 | 0.8 | 4.7 | 70 | 3.08 |
| 10 | 1.0 | 6.3 | 120 | 1.83 |
| 16 | 1.0 | 6.9 | 170 | 1.15 |
| 25 | 1.2 | 8.5 | 260 | 0.727 |
| 35 | 1.2 | 9.5 | 350 | 0.524 |
| 50 | 1.4 | 11.2 | 475 | 0.387 |
| 70 | 1.4 | 12.8 | 670 | 0.268 |
| 95 | 1.6 | 15.2 | 940 | 0.193 |
| 120 | 1.6 | 16.5 | 1160 | 0.153 |
| 150 | 1.8 | 18.4 | 1435 | 0.124 |
| 185 | 2.0 | 20.6 | 1800 | 0.0991 |
| 240 | 2.2 | 23.3 | 2350 | 0.0754 |
| 300 | 2.4 | 26.0 | 2960 | 0.0601 |
| 400 | 2.6 | 29.9 | 3930 | 0.0470 |
| 500 | 2.8 | 33.7 | 5030 | 0.0366 |
| 630 | 2.8 | 36.7 | 6160 | 0.0283 |
LU London Underground Duct Seal | protecting zero halogen cable installations against water ingress, gas migration and fire spread
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.
Draka Saffire 6491B Single Core Zero Halogen Low Smoke Cables | Data SheetDownload
