BS 7629-1 Screened Fire Alarm · 3 core 1.0 mm²
Ordering reference BS 7629-1 Screened Fire Alarm · 3 core 1.0 mm²
BS 7629-1
BS 7629-1 Screened Fire Alarm
Application
Fire alarm systems · Voice alarm systems · Emergency lighting control · Building safety systems
Construction
- 1Conductor (per core)Copper conductor · 7 × Ø0.43 mm · IEC 60228 cl.2
- 2Core insulationFire resistant LSZH insulation
- 3FillerPP filler
- 4ShieldBraid shield (C)
- 5SheathLSZH
Technical parameters
Voltage class300/500 V
Core layout3 core
Conductor size1.0 mm²
Fire performanceEN 50200 / BS 6387 fire alarm circuit integrity
Protection / screenAluminium/polyester screen and drain wire
OD guide16 mm
Conductor materialCopper conductor
Operating temperature−15 °C to +90 °C (fire-rated)
Cable weight0.23 kg/m
Bend radius6 x OD during installation
Outer sheathLSZH
Max DC resistance at 20 °C18.10 Ω/km
Current rating (guide)≈ 22 A (Cu, multicore clipped, 30 °C — IEC 60364-5-52 guide)
Routine test voltage2.0 kV a.c. 5 min
Ratings & materials
StandardBS 7629-1
Voltage class300/500 V
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