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BS EN 50288-7 Multipair Instrumentation Cable, Individual and Overall Screened, XLPE/PVC
Flame retardant multipair instrumentation cable with individual pair screens, an overall foil screen, XLPE insulation and PVC sheath. Unarmoured BS EN 50288-7 construction with separate 300V and 500V versions.
Flame Retardant Individual and OverallScreened Instrumentation Cables (Multipair).pdf Contact us

APPLICATION

For indoor industrial signal connections requiring separate screens around each twisted pair and a further overall screen. The unarmoured cable uses XLPE insulation and a PVC outer sheath for instrumentation, communication and equipment interconnections, including damp areas.

STANDARDS

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

FIRE PERFORMANCE

Flame Retardance (Single Vertical Wire Test) :BS EN 60332-1-2

VOLTAGE RATING

300V, 500V

CABLE CONSTRUCTION

Conductor : Plain or metal coated copper wire, solid, stranded or flexible according to IEC 60228 class 1, 2 and 5.

Insulation : Extruded XLPE compound according to EN 50290-2-29. PVC, PE, PP compound can be offered as options.

Pairs : Two insulated conductors uniformly twisted together with a lay not exceeding 100mm (≤1.5mm²) or 150mm (for 2.5mm²).

Individual Screen : Aluminium/polyester tape is applied over each pair with metallic side down in contact with tinned copper drain wire, 0.5mm².

Binder Tape : PETP transparent tape.

Overall Screen : Aluminium/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.

Outer Sheath : Thermoplastic PVC compound according to EN 50290-2-22.

Outer Sheath Option : UV resistance, hydrocarbon resistance, oil resistance, anti-rodent and anti-termite properties can be offered as option. Compliance to fire performance standard (IEC 60332-1, IEC 60332-3, UL 1581, UL 1666 etc) depends on the oxygen index of the PVC compound and the overall cable design. LSPVC can also be provided upon request.

COLOUR CODE

Insulation Colour : Colours 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 Sheath : Black. 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 radius : 7.5 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)Y PiMF
No. of Pairs X Cross SectionClass of ConductorNominal Insulation ThicknessNominal Outer Sheath ThicknessApprox. Overall DiameterApprox. Weight
mm²mmmmmmkg/km
0.5mm²
2x2x0.520.41.08.685
3x2x0.520.41.09.0109
4x2x0.520.41.110.1139
5x2x0.520.41.111.0165
8x2x0.520.41.112.9238
10x2x0.520.41.215.3301
12x2x0.520.41.215.8345
16x2x0.520.41.317.7448
20x2x0.520.41.419.4550
24x2x0.520.41.522.3664
0.75mm²
2x2x0.7520.41.09.2100
3x2x0.7520.41.19.9135
4x2x0.7520.41.110.8167
5x2x0.7520.41.212.0205
8x2x0.7520.41.214.1298
10x2x0.7520.41.316.8375
12x2x0.7520.41.317.3432
16x2x0.7520.41.419.4560
20x2x0.7520.41.521.2688
24x2x0.7520.41.524.2817
1.0mm²
2x2x1.020.41.09.9120
3x2x1.020.41.110.7163
4x2x1.020.41.212.0209
5x2x1.020.41.213.1251
8x2x1.020.41.215.4369
10x2x1.020.41.318.3464
12x2x1.020.41.419.1546
16x2x1.020.41.521.4709
20x2x1.020.41.523.2860
24x2x1.020.41.626.61037
1.5mm²
2x2x1.520.51.111.8164
3x2x1.520.51.212.7223
4x2x1.520.51.214.0279
5x2x1.520.51.315.5344
8x2x1.520.51.318.3508
10x2x1.520.51.421.8639
12x2x1.520.51.522.8752
16x2x1.520.51.625.5978
20x2x1.520.51.727.91202
24x2x1.520.51.832.11447

500V

ConductorRE-2X(St)Y PiMF
No. of Pairs X Cross SectionClass of ConductorNominal Insulation ThicknessNominal Outer Sheath ThicknessApprox. Overall DiameterApprox. Weight
mm²mmmmmmkg/km
0.5mm²
2x2x0.520.61.010.0101
3x2x0.520.61.110.8133
4x2x0.520.61.111.8164
5x2x0.520.61.213.1201
8x2x0.520.61.215.4289
10x2x0.520.61.318.4365
12x2x0.520.61.419.2427
16x2x0.520.61.521.5550
20x2x0.520.61.523.3661
24x2x0.520.61.626.7798
0.75mm²
2x2x0.7520.61.110.8122
3x2x0.7520.61.111.5156
4x2x0.7520.61.212.8199
5x2x0.7520.61.214.0237
8x2x0.7520.61.316.7353
10x2x0.7520.61.419.8444
12x2x0.7520.61.420.5509
16x2x0.7520.61.523.0659
20x2x0.7520.61.625.1807
24x2x0.7520.61.728.9973
1.0mm²
2x2x1.020.61.111.6143
3x2x1.020.61.212.5191
4x2x1.020.61.213.7238
5x2x1.020.61.315.2292
8x2x1.020.61.317.9427
10x2x1.020.61.421.3537
12x2x1.020.61.522.2630
16x2x1.020.61.625.0816
20x2x1.020.61.727.21000
24x2x1.020.61.831.31204
1.5mm²
2x2x1.520.61.112.5173
3x2x1.520.61.213.5235
4x2x1.520.61.315.0302
5x2x1.520.61.316.5362
8x2x1.520.61.419.7545
10x2x1.520.61.523.5685
12x2x1.520.61.624.4804
16x2x1.520.61.727.41043
20x2x1.520.61.829.91281
24x2x1.520.61.934.41541
2.5mm²
2x2x2.520.71.214.9245
3x2x2.520.71.316.1335
4x2x2.520.71.417.9432
5x2x2.520.71.519.9531
8x2x2.520.71.623.8801
10x2x2.520.71.728.31005
12x2x2.520.71.829.41180
16x2x2.520.71.933.01533
20x2x2.520.72.136.21901
24x2x2.520.72.241.62284


KEY FEATURES

  • Individual aluminium/polyester foil screens around the twisted pairs.

  • Overall foil screen with a tinned copper drain wire.

  • XLPE insulation and a flame retardant PVC sheath.

SELECTION NOTES

Specify voltage version, pair count, conductor area and class. Include the individual and overall screen termination arrangement in the installation design.

RELATED PRODUCTS

FREQUENTLY ASKED QUESTIONS

How does this cable screen each pair?

Aluminium/polyester tape is applied around each pair in contact with a 0.5 mm² tinned copper drain wire.

Is there also an overall screen?

Yes. A further aluminium/polyester screen encloses the laid-up cable assembly.

What materials are used as standard?

XLPE insulation and a thermoplastic PVC outer sheath form the standard construction.

Which voltage versions are available?

The page lists separate 300V and 500V constructions with their corresponding electrical and dimensional data.

What is the listed bend radius?

The minimum bending radius is 7.5 times the overall cable diameter.