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BS EN 50288-7 Fire Resistant Multipair Instrumentation Cable, Individual/Overall Screened, SWA
Fire resistant multipair instrumentation cable with individual and overall foil screens, mica glass tape, XLPE insulation and LSZH sheaths. Galvanised steel wire armour adds mechanical protection. Separate 300V and 500V versions.
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APPLICATION

For industrial instrument circuits requiring both pair-by-pair screening and mechanical protection. Individual foil screens and an overall screen surround the signal pairs, while galvanised steel wire armour protects the cable assembly. Mica glass tape and LSZH sheaths form part of the fire resistant construction.

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

300, 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).
Individual ScreenAluminium/polyester tape is applied over each pair with metallic side down in contact with tinned copper drain wire, 0.5mm².
Binder TapePETP transparent tape.
Overall ScreenAluminium/polyester tape is applied over the laid up cores 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 according to EN 50290-2-22.
Outer Sheath OptionThermoplastic LSZH compound. UV 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 during 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 PiMF...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
2x2x0.520.41.00.91.416.6490
3x2x0.520.41.00.91.417.3546
4x2x0.520.41.10.91.519.0644
5x2x0.520.41.11.251.520.7851
8x2x0.520.41.11.251.524.01067
10x2x0.520.41.21.251.628.01309
12x2x0.520.41.21.251.628.61403
16x2x0.520.41.31.61.732.41888
20x2x0.520.41.41.61.734.82152
24x2x0.520.41.51.61.839.32542
0.75mm²
2x2x0.7520.41.00.91.417.2524
3x2x0.7520.41.10.91.518.4613
4x2x0.7520.41.10.91.519.8697
5x2x0.7520.41.21.251.522.2937
8x2x0.7520.41.21.251.625.51197
10x2x0.7520.41.31.251.629.31451
12x2x0.7520.41.31.251.630.01578
16x2x0.7520.41.41.61.734.12095
20x2x0.7520.41.51.61.836.82415
24x2x0.7520.41.51.61.841.32800
1.0mm²
2x2x1.020.41.00.91.418.0567
3x2x1.020.41.10.91.519.2667
4x2x1.020.41.21.251.521.6909
5x2x1.020.41.21.251.623.41036
8x2x1.020.41.21.251.626.71319
10x2x1.020.41.31.61.731.71821
12x2x1.020.41.41.61.732.81982
16x2x1.020.41.51.61.836.22372
20x2x1.020.41.51.61.838.82692
24x2x1.020.41.62.01.943.93516
1.5mm²
2x2x1.520.51.11.251.520.7805
3x2x1.520.51.21.251.622.1937
4x2x1.520.51.21.251.623.81072
5x2x1.520.51.31.251.625.81232
8x2x1.520.51.31.251.729.91604
10x2x1.520.51.41.61.835.52198
12x2x1.520.51.51.61.836.72400
16x2x1.520.51.61.61.940.62887
20x2x1.520.51.72.02.043.93679
24x2x1.520.51.82.02.049.54311

500v

ConductorRE-2X(St)HSWAH PiMF...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
2x2x0.520.61.00.91.418.0548
3x2x0.520.61.10.91.519.3638
4x2x0.520.61.11.251.521.4853
5x2x0.520.61.21.251.623.4987
8x2x0.520.61.21.251.626.81241
10x2x0.520.61.31.251.731.11522
12x2x0.520.61.41.251.732.21656
16x2x0.520.61.51.61.836.32214
20x2x0.520.61.51.61.838.92493
24x2x0.520.61.62.01.944.03278
0.75mm²
2x2x0.7520.61.10.91.519.0608
3x2x0.7520.61.11.251.520.7806
4x2x0.7520.61.21.251.622.6943
5x2x0.7520.61.21.251.624.31059
8x2x0.7520.61.31.251.628.01361
10x2x0.7520.61.41.61.733.31882
12x2x0.7520.61.41.61.734.22014
16x2x0.7520.61.51.61.837.82402
20x2x0.7520.61.61.61.940.92769
24x2x0.7520.61.72.02.046.33622
1.0mm²
2x2x1.020.61.10.91.519.8652
3x2x1.020.61.21.251.521.7883
4x2x1.020.61.21.251.623.51018
5x2x1.020.61.31.251.625.51167
8x2x1.020.61.31.251.729.61504
10x2x1.020.61.41.61.734.82049
12x2x1.020.61.51.61.836.12250
16x2x1.020.61.61.61.940.02692
20x2x1.020.61.72.01.943.03409
24x2x1.020.61.82.02.048.84017
1.5mm²
2x2x1.520.61.11.251.521.5841
3x2x1.520.61.21.251.622.9980
4x2x1.520.61.31.251.624.91140
5x2x1.520.61.31.251.727.01305
8x2x1.520.61.41.61.732.01905
10x2x1.520.61.51.61.837.12331
12x2x1.520.61.61.61.938.52566
16x2x1.520.61.72.02.042.63401
20x2x1.520.61.82.02.045.93892
24x2x1.520.61.92.02.152.14590
2.5mm²
2x2x2.520.71.21.251.624.11022
3x2x2.520.71.31.251.025.51186
4x2x2.520.71.41.251.727.91405
5x2x2.520.71.51.251.830.61639
8x2x2.520.71.61.61.836.22392
10x2x2.520.71.71.62.042.32955
12x2x2.520.71.82.02.043.73567
16x2x2.520.71.92.02.148.54280
20x2x2.520.72.12.52.252.65499
24x2x2.520.72.22.52.459.96505


KEY FEATURES

  • Individual pair screens plus an overall aluminium/polyester screen.

  • Copper conductors with mica glass tape and XLPE insulation.

  • Galvanised steel wire armour with LSZH inner and outer sheaths.

SELECTION NOTES

Choose voltage version, pair count, conductor area and class. Coordinate glands, armour termination and screen connections with the installation design.

RELATED PRODUCTS

FREQUENTLY ASKED QUESTIONS

How many screening levels are used?

Each twisted pair is individually screened, and an additional overall foil screen surrounds the assembly.

What is the armour material?

The armour consists of galvanised steel wires applied over the inner sheath.

What is the fire barrier made from?

Mica glass tape is included beneath the XLPE insulation.

Which voltage constructions are available?

Separate 300V and 500V versions are detailed in the electrical and dimensional tables.

What bending allowance is required?

The listed minimum bending radius is 10 times the overall cable diameter.

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