FIRE SURVIVAL CABLE BS 7846

  • REACH
  • RoHS
  • CE
  • CPR Compliant
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Application

These cables offer the advantages of an armoured 600/1000V rated, low smoke zero halogen (LSZH) cable with circuit integrity. They are intended for use in installations where vital circuits are required to continue operation in the event of the outbreak of fire. It is particularly suited for use in public buildings and constructions (such as hospitals, theatres, shopping developments, tunnels, mass transit railways, oil & petrochemical plants, power stations and computer installations) where the danger to life, equipment and structures may be greatly increased in the event of a power failure due to fire.

Standard

BS 7846

Technical Data

Voltage Rating: 600 / 1000V

Operating Temperature: -40°C to + 90°C

(The cable should not be flexed when either the ambient or cable temperature is below 0°C)

Minimum Bending Radius: 12 x overall diameter of cable

Cable Construction

Construction: Plain annealed stranded copper conductors.

Conductor: For sizes up to and including 16mm² are offered in circular . Shaped conductors are offered from 25 mm² and onwards.

Insulation: Mica (fire – resistant) tapes, covered by an extruded layer of cross – linked polyethylene.

Bedding: An extruded layer of thermoplastic low smoke zero halogen (LSZH) compound.

Armour: Single layer of galvanized steel wires.

Sheath: Thermoplastic low smoke zero halogen (LSZH) compound.

Cable Technical Data

Part NumberNominal
Cross
Sectional
Area
(Sq. mm)
Insulation
Thickness
(mm)
Nominal
Armour
Wire
Diameter
(mm)
Approx.
Diameter
Under
Armour
(mm)
Approx.
Overall
Diameter
(mm)
Approx.
Cable
Weight
(kg/km)
Max. DC
Conductor
Resistance
at 20°C
(Ω/km)
Max. AC
Conductor
Resistance
at 90°C
(Ω/km)
Reactance
at 50Hz
(Ω/km)
AC
Impedance
at 90°C
(Ω/km)
Max. Arm.
Resistance
at 20°C
(Ω/km)
2 Core1003002011051.5*0.60.98.513.041512.115.4280.10415.42810.7
1003002012052.5*0.70.91014.54957.419.4480.1019.4488.8
1003002000044*0.70.91115.55754.615.8780.0995.8787.9
1003002000066*10.912.517.06583.083.9270.0943.9287.0
10030020001010*10.914.019.08281.832.3330.0932.3356.0
1003002000161611.2516.021.510051.151.4660.0881.4693.8
1003002000252511.2515.521.211050.7270.9270.0820.933.7
1003002000353511.617.524.015550.5240.6680.0770.6732.5
1003002000505011.620.026.518550.3870.4940.0760.52.3
100300200070701.11.623.030.024550.2680.3420.0750.3492.0
100300200095951.12.026.034.033450.1930.2470.0740.2581.4
1003002001201201.22.029.037.038980.1530.1960.0720.2091.3
1003002001501501.42.032.040.046450.1240.160.0730.1761.2
1003002001851851.62.536.045.559450.09910.1280.0730.1480.82
1003002002402401.72.540.050.073450.07540.0990.0720.1220.73
1003002003003001.82.544.054.586950.06010.080.0720.1070.67
10030020040040022.549.560.0107450.0470.0640.0710.0960.59
3 Core1003003011051.5*0.60.99.013.542312.115.4280.10415.42810.2
1003003012052.5*0.70.910.515.05447419.4480.1019.4488.2
1003003000044*0.70.911.516.56444.615.8780.0995.8787.5
1003003000066*0.70.913.017.57383.083.9270.0943.9256.6
10030030001010*0.71.2515.020.510851.832.3330.0932.3354.0
100300300016160.71.2517.022.513131.151.4660.0881.4693.6
100300300025250.91.620.026.518030.7270.9270.0820.932.5
100300300035350.91.622.029.022020.5240.6680.0770.6732.3
1003003000505011.622.529.524530.3870.4940.0760.52.0
100300300070701.11.626.033.032020.2680.3420.0750.3491.8
100300300095951.12.030.038.044550.1930.2470.0740.2581.3
1003003001201201.22.033.041.553050.1530.1960.0720.2091.2
1003003001501501.42.537.046.567050.1240.160.0730.1760.78
1003003001851851.62.541.051.080520.09910.1280.0730.1480.71
1003003002402401.72.546.056.099530.07540.0990.0720.1220.63
1003003003003001.82.551.061.0120530.06010.080.0720.1070.58
1003003004004002.02.557.067.5148030.0470.0640.0710.0960.52
4 Core1003004011051.5*0.60.91014.852212.115.4280.10415.4289.5
1003004012052.5*0.70.911.516.06187.419.4480.1019.4487.7
1003004000044*0.70.91317.87254.615.8780.0995.8786.8
1003004000066*0.71.2514.520.09853.083.9270.0943.9254.3
10030040001010*0.71.2516.522.012551.832.3330.0932.3353.7
100300400016160.71.251924.516351.151.4660.0881.4693.2
100300400025250.91.62228.521450.7270.9270.0820.9302.3
100300400035350.91.624.531.526450.5240.6680.0770.6732
100300400050501.01.62633.231030.3870.4940.0760.5001.8
100300400070701.12.030.539.244050.2680.3420.0750.3491.2
100300400095951.12.034.543.256530.1930.2470.0740.2581.1
1003004001201201.22.538.548.672520.1530.1960.0720.2090.76
1003004001501501.42.542.553.085530.1240.160.0730.1760.68
1003004001851851.62.547.558.0103040.09910.1280.0730.1480.61
1003004002402401.72.553.564.5128950.07540.0990.0720.1220.54
1003004003003001.82.559.070.3155450.06010.080.0720.1070.49
1003004004004002.03.1566.579.8202450.0470.0640.0710.0960.35

Note:

  • * Class 2 stranded circular (non compacted) conductor.
  • For current ratings refer table no. 15-1 & voltage drop refer table no. 15-2.