BS 7629-1, BS 5839-1 Low Smoke Zero Halogen to IEC/EN 60754-1/2, IEC/EN 61034-1/2
APPLICATION
Standard fire resistant cables for use primarily in fire detection, fire alarm, voice alarm, and emergency lighting circuits. These cables are designed to continue to operate for a period of time in a fire situation. ‘Standard’ fire resistance is recommended for general use.
STANDARDS
CHARACTERISTICS
Voltage Rating Uo/U : 300/500V
Temperature Rating : -40°C to +90°C
Minimum Bending Radius : 6 x overall diameter
CONSTRUCTION
| Conductor : | 1.5mm2 - 2.5mm2: Class 1 solid Copper 4mm2 and over: Class 2 stranded Copper |
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| Insulation : | High performance fire resistant silicone rubber | ||
| Overall Screen: | Al/PET (Aluminium/Polyester Tape) | ||
| Circuit Protective Conducto | Tinned copper | ||
| Outer Sheath : | LSZH (Low Smoke Zero Halogen) | ||
| Core Identification : | 2 core: Blue Black 3 core: Yellow Red Black+ Bare Earth 4 core: Yellow Red Black Blue |
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| Sheath Colour : | Red White | ||
DIMENSIONS
| NO. OF CORES | NOMINAL CROSS SECTIONAL AREA mm2 |
CONDUCTOR TYPE | NOMINAL THICKNESS OF INSULATION mm |
NOMINAL THICKNESS OF SHEATH mm |
NOMINAL OVERALL DIAMETER mm |
NOMINAL WEIGHT kg/km |
| 1 | 2/5 | RE | 0/8 | 1/4 | 6/15 | 62 |
| 1 | 4 | RE | 1 | 1/4 | 7/5 | 85 |
| 1 | 6 | RE | 1 | 1/4 | 7/5 | 108 |
| 1 | 10 | RM | 1 | 1/4 | 8/6 | 155 |
| 1 | 16 | RM | 1 | 1/4 | 9/6 | 218 |
| 1 | 25 | RM | 1/2 | 1/4 | 11/1 | 318 |
| 1 | 35 | RM | 1/2 | 1/4 | 12/1 | 414 |
| 1 | 50 | RM | 1/4 | 1/4 | 13/7 | 552 |
| 1 | 70 | RM | 1/4 | 1/4 | 15/5 | 750 |
| 1 | 95 | RM | 1/6 | 1/5 | 17/6 | 1020 |
| 1 | 120 | RM | 1/6 | 1/6 | 19/3 | 1259 |
CONDUCTORS
Class 1 Solid Plain Conductor
| NO. OF CORES |
NOMINAL CROSS SECTIONAL AREA mm2 |
EARTH WIRE CONSTRUCTION n° /mm |
NOMINAL OVERALL DIAMETER mm |
NOMINAL WEIGHT kg/km |
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| 2 | 1/5 | 1/1.38 | 8 | 95 | ||
| 2 | 2/5 | 1/1.75 | 9/4 | 130 | ||
| 2 | 4 | 7/0.85 | 11/5 | 200 | ||
| 3 | 1/5 | 1/1.38 | 8/5 | 115 | ||
| 3 | 2/5 | 1/1.75 | 10 | 170 | ||
| 3 | 4 | 7/0.85 | 12/2 | 260 | ||
| 4 | 1/5 | 1/1.38 | 9/4 | 140 | ||
| 4 | 2/5 | 1/1.75 | 11 | 210 | ||
| 4 | 4 | 7/0.85 | 13/5 | 330 | ||
ELECTRICAL CHARACTERISTICS
| NOMINAL CROSS SECTIONAL AREA mm2 |
CONDUCTOR RESISTANCE AT 20ºC Ω/km |
INSULATION RESISTANCE AT 20ºC MΩXkm |
NOMINAL CAPACITANCE pF/m |
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| Core / Core | Core / Screen | |||||
| 1 | 18/1 | 300 | 100 | 170 | ||
| 1/5 | 12/1 | 300 | 110 | 190 | ||
| 2/5 | 7/41 | 300 | 130 | 220 | ||
| 4 | 4/61 | 300 | 160 | 270 | ||
CURRENT CARRYING CAPACITY
Clipped Direct
| NOMINAL CROSS SECTIONAL AREA mm2 |
CURRENT RATING Amps |
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| 2 Core | 3 and 4 Core | |||||
| 1 | 19 | 17 | ||||
| 1/5 | 24 | 22 | ||||
| 2/5 | 33 | 30 | ||||
| 4 | 45 | 40 | ||||
In Conduit or in Cable Tray
| NOMINAL CROSS SECTIONAL AREA mm2 |
CURRENT RATING Amps |
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| 2 Core | 3 and 4 Core | |||||
| 1 | 17 | 15 | ||||
| 1/5 | 22 | 19/5 | ||||
| 2/5 | 30 | 26 | ||||
| 4 | 40 | 35 | ||||
VOLTAGE DROP
Clipped Direct
| NOMINAL CROSS SECTIONAL AREA mm2 |
VOLTAGE DROP mV/A/m |
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| 2 Core | 3 and 4 Core | |||||
| 1 | 45 | 39 | ||||
| 1/5 | 30 | 26 | ||||
| 2/5 | 18 | 15 | ||||
| 4 | 11 | 10 | ||||
In Conduit or in Cable Tray
| NOMINAL CROSS SECTIONAL AREA mm2 |
VOLTAGE DROP mV/A/m |
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| 2 Core | 3 and 4 Core | |||||
| 1 | 45 | 39 | ||||
| 1/5 | 30 | 26 | ||||
| 2/5 | 18 | 15 | ||||
| 4 | 11 | 10 | ||||
DE-RATING FACTORS
For Air Temperature other than 30°C (DE-RATING FACTOR at 30°C = 1)
| AMBIENT TEMPERATURE | 25ºC | 35ºC | 40ºC | 45ºC | 50ºC | 55ºC |
| DE-RATING FACTOR | 1/04 | 0/95 | 0/9 | 0/85 | 0/8 | 0/74 |
