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BS EN 50288-7 Fire Resistant Multipair Instrumentation Cable, Overall Screened, SWA
Armoured fire resistant multipair instrumentation cable with mica glass tape, XLPE insulation, an overall foil screen and LSZH sheaths. Galvanised steel wire armour protects the pair assembly. Separate 300V and 500V versions.
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APPLICATION

For industrial instrumentation and signal routes exposed to a risk of mechanical damage. This fire resistant multipair cable combines mica glass tape, an overall foil screen and galvanised steel wire armour. LSZH inner and outer sheaths enclose the screened pair assembly and armour.

STANDARDS

Basic design to BS EN 50288-7 (formerly BS 5308)

FIRE PERFORMANCE

Circuit IntegrityIEC 60331-21; BS 6387 CWZ (Optional); BS EN 50200 (PH30/PH60/PH120)
Flame Retardance (Single Vertical Wire or cable test)IEC 60332-1-2; EN 60332-1-2
Reduced Fire Propagation (Vertically-mounted bundled wires & cables test)IEC 60332-3-24; EN 60332-3-24
Halogen FreeIEC 60754-1; EN 50267-2-1
No Corrosive Gas EmissionIEC 60754-2; EN 50267-2-2
Minimum Smoke EmissionIEC 61034-2; EN 61034-2

VOLTAGE RATING

300V, 500V

CABLE CONSTRUCTION

ConductorPlain or metal coated copper wire, solid, stranded or flexible according to IEC 60228 class 1, 2 and class 5.
Fire BarrierMica glass tape.
InsulationExtruded XLPE compound according to EN 50290-2-29. LSZH, PE, PP compound can be offered as options.
PairsTwo insulated conductors uniformly twisted together with a lay not exceeding 100mm (≤1.5mm²) or 150mm (for 2.5mm²).
Binder TapePETP transparent tape.
Overall ScreenAluminium/polyester tape is applied over the laid up pairs with metallic side down in contact with tinned copper drain wire, 0.5mm². Copper braid screen or aluminium/polyester tape combination with copper braid screen can be offered as option.
Inner SheathThermoplastic LSZH compound.
AmouringGalvanized steel wire armour.
Outer SheathThermoplastic LSZH compound type LTS3 as per BS 7655-6.1 (Thermosetting LSZH compound type SW2-SW4 as per BS 7655-2.6 can be offered).
Outer Sheath OptionUV resistance, hydrocarbon resistance, oil resistance, anti-rodent and anti-termite properties can be offered as option.

COLOUR CODE

Insulation ColourColours and/or additional ring markings and/or symbols achieved by the use of coloured insulation or by a coloured surface using extrusion, printing or painting.
Outer SheathBlack. Other colours can be offered upon request.

PHYSICAL AND THERMAL PROPERTIES

Temperature range during operation-30°C - +90°C
Temperature range fixed installation-5°C - +50°C
Maximum short circuit temperature (5 Seconds)250°C
Minimum bending radius10 x Overall Diameter

ELECTRICAL PROPERTIES

300V

Conductor area sizemm²0.50.751.01.5
Insulation thickness (Nominal)mm0.40.40.40.5
Insulation thickness (Minimum)mm0.260.260.260.35
Conductor resistance (20°C)ohm/km36.725.018.512.3
Minimum Insulation resistance (20°C)Mohm/km1000
Maximum Mutual capacitancenf/km250
Capacitance Unbalancepf/500m500
Maximum l/R (ratio)μH/Ω25252540
Operating VoltageV300
Dielectric strength for 1 minuteACV≥1000
DCV≥2000

500v

Conductor area sizemm²0.50.751.01.52.5
Insulation thickness (nominal)mm0.60.60.60.60.7
Insulation thickness (minimum)mm0.440.440.440.440.53
Conductor resistance (20°C)ohm/km36.725.018.512.37.4
Minimum Insulation resistance (20°C)Mohm/km1000
Maximum Mutual capacitancenf/km250
Capacitance Unbalancepf/500m500
Maximum l/R (ratio)μH/Ω2525254060
Operating VoltageV500
Dielectric strength for 1 minuteACV≥2000
DCV≥3000

CONSTRUCTION PARAMETERS

300V

ConductorRE-2X(St)HSWAH...CI
No. of Pairs X Cross SectionClass of ConductorNominal Insulation ThicknessNominal Inner Sheath ThicknessNominal Armour Wire DiameterNominal Outer Sheath ThicknessApprox. Overall DiameterApprox. Weight
mm²　mmmmmmmmmmkg/km
0.5mm²
1x2x0.520.40.90.91.311.8287
2x2x0.520.40.90.91.415.4431
3x2x0.520.41.00.91.416.3490
4x2x0.520.41.00.91.417.4553
5x2x0.520.41.10.91.519.1644
8x2x0.520.41.11.251.522.5945
10x2x0.520.41.11.251.525.51123
12x2x0.520.41.21.251.526.41219
16x2x0.520.41.21.251.629.01434
20x2x0.520.41.31.61.631.21841
24x2x0.520.41.31.61.735.92148
0.75mm²
1x2x0.7520.40.90.91.312.1304
2x2x0.7520.41.00.91.416.2476
3x2x0.7520.41.00.91.416.9530
4x2x0.7520.41.10.91.518.6626
5x2x0.7520.41.10.91.519.9703
8x2x0.7520.41.11.251.523.41035
10x2x0.7520.41.21.251.627.11269
12x2x0.7520.41.21.251.627.91361
16x2x0.7520.41.31.251.630.71614
20x2x0.7520.41.41.61.733.92086
24x2x0.7520.41.41.61.838.02436
1.0mm²
1x2x1.020.40.90.91.312.6326
2x2x1.020.41.00.91.416.9516
3x2x1.020.41.10.91.518.1604
4x2x1.020.41.10.91.519.4688
5x2x1.020.41.11.251.521.5907
8x2x1.020.41.21.251.524.81168
10x2x1.020.41.21.251.628.51412
12x2x1.020.41.31.251.629.51543
16x2x1.020.41.41.61.733.52071
20x2x1.020.41.41.61.835.82364
24x2x1.020.41.51.61.840.32773
1.5mm²
1x2x1.520.50.90.91.413.7379
2x2x1.520.51.10.91.518.8622
3x2x1.520.51.10.91.519.7706
4x2x1.520.51.21.251.622.4975
5x2x1.520.51.21.251.624.01100
8x2x1.520.51.31.251.627.71431
10x2x1.520.51.41.61.732.91966
12x2x1.520.51.41.61.733.82119
16x2x1.520.51.51.61.837.42546
20x2x1.520.51.61.61.940.42952
24x2x1.520.51.71.61.945.53467

500v

ConductorRE-2X(St)HSWAH...CI
No. of Pairs X Cross SectionClass of ConductorNominal Insulation ThicknessNominal Inner Sheath ThicknessNominal Armour Wire DiameterNominal Outer Sheath ThicknessApprox. Overall DiameterApprox. Weight
mm²　mmmmmmmmmmkg/km
0.5mm²
1x2x0.520.60.90.91.312.6317
2x2x0.520.61.00.91.416.9496
3x2x0.520.61.00.91.417.7551
4x2x0.520.61.10.91.519.4648
5x2x0.520.61.11.251.521.6857
8x2x0.520.61.21.251.524.81089
10x2x0.520.61.21.251.628.61313
12x2x0.520.61.31.251.629.61424
16x2x0.520.61.41.61.732.71912
20x2x0.520.61.41.61.735.02145
24x2x0.520.61.51.61.840.42533
0.75mm²
1x2x0.7520.60.90.91.312.9335
2x2x0.7520.61.00.91.417.5529
3x2x0.7520.61.10.91.518.8616
4x2x0.7520.61.11.251.520.8824
5x2x0.7520.61.21.251.522.6940
8x2x0.7520.61.21.251.626.01196
10x2x0.7520.61.31.251.630.01450
12x2x0.7520.61.31.61.731.01771
16x2x0.7520.61.41.61.734.12087
20x2x0.7520.61.51.61.837.62401
24x2x0.7520.61.61.61.942.62837
1.0mm²
1x2x1.020.60.90.91.313.4357
2x2x1.020.61.00.91.418.2569
3x2x1.020.61.10.91.519.5667
4x2x1.020.61.11.251.521.7893
5x2x1.020.61.21.251.623.71036
8x2x1.020.61.21.251.627.11314
10x2x1.020.61.31.61.731.51817
12x2x1.020.61.41.61.732.61974
16x2x1.020.61.51.61.836.82356
20x2x1.020.61.51.61.839.42667
24x2x1.020.61.62.01.944.63492
1.5mm²
1x2x1.520.60.90.91.314.1394
2x2x1.520.61.10.91.519.5650
3x2x1.520.61.21.251.521.3883
4x2x1.520.61.21.251.623.11020
5x2x1.520.61.31.251.625.11171
8x2x1.520.61.31.251.729.01516
10x2x1.520.61.41.61.834.02081
12x2x1.520.61.51.61.835.52269
16x2x1.520.61.61.61.939.32722
20x2x1.520.61.71.62.042.53153
24x2x1.520.61.81.62.047.93701
2.5mm²
1x2x2.520.71.00.91.415.5474
2x2x2.520.71.21.251.522.4927
3x2x2.520.71.21.251.623.71070
4x2x2.520.71.31.251.625.81252
5x2x2.520.71.41.251.728.31461
8x2x2.520.71.41.61.732.62114
10x2x2.520.71.61.61.939.12643
12x2x2.520.71.61.61.940.22868
16x2x2.520.71.72.02.044.53803
20x2x2.520.71.92.02.148.34441
24x2x2.520.72.02.52.254.85770


KEY FEATURES

  • Twisted pairs with XLPE insulation and a mica glass tape fire barrier.

  • Overall aluminium/polyester screen with a tinned copper drain wire.

  • Galvanised steel wire armour between LSZH sheaths.

SELECTION NOTES

Select pair count, conductor area, conductor class and the required 300V or 500V construction. Allow for the armoured cable diameter when planning glands and bends.

RELATED PRODUCTS

FREQUENTLY ASKED QUESTIONS

How are the pairs screened?

An overall foil screen surrounds the laid-up pairs and contacts a 0.5 mm² tinned copper drain wire.

What provides mechanical protection?

Galvanised steel wire armour is applied over the inner sheath.

Which insulation is standard?

The standard construction uses XLPE insulation with mica glass tape as the fire barrier.

How does the individually screened version differ?

It adds a separate foil screen around every pair as well as the overall screen and steel wire armour.

What is the minimum bending radius?

The listed minimum is 10 times the overall cable diameter.

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