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  HomeProuductsFIRETOX LSZH Flame Retardant Power & Control Cables

450/750V XLPE Insulated, LSZH Sheathed Power Cables to BS 7211(Single Core)

FTX300 07RZ1-U/R (CU/XLPE/LSZH 450/750V Class 1/2)

BS Code: 6181B

Applications

BS 7211 450/750V XLPE Insulated, LSZH Sheathed Power Cables are mainly used in power stations, mass transit underground passenger systems, airports,petrochemical plants, hotels, hospitals and high-rise buildings.

Standard

Basic design to BS 7211:2012

FIRE PERFORMANCE

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 Free IEC 60754-1; EN 50267-2-1
No Corrosive Gas Emission IEC 60754-2; EN 50267-2-2
Minimum Smoke Emission IEC 61034-2; EN 61034-2

Voltage Rating

450/750V

Construction

450/750V XLPE Insulated, LSZH Sheathed, Power Cables Power Cables to BS 7211(Single Core)
Conductor Annealed copper conductor, solid or stranded according to BS EN 60228 class 1 or class 2.
Insulation XLPE type GP8 according to BS 7655-1.3. Crosslinked polyolefin material type EI 5 according to EN 50363-5 can be offered as option.
Outer Sheath Extruded LSZH type LTS 4 according to BS 7655-6.1.
Outer Sheath Option UV resistance, hydrocarbon resistance, oil resistance, anti-rodent and anti-termite properties can be offered as option.

Colour Code

Insulation Colour Brown or blue.
Sheath Colour White; other colours can be offered upon request.

PHYSICAL AND THERMAL PROPERTIES

Maximum temperature range during operation: 90°C
Maximum short circuit temperature (5 Seconds): 250°C
Minimum bending radius: OD<8mm: 4 × Overall Diameter 8mm≤OD≤12mm: 5 × Overall Diameter OD>12mm: 6 × Overall Diameter

CONSTRUCTION PARAMETERS

Conductor FTX300 07RZ1-U/R
No. of Cores × Cross-sectional Area Conductor Class Nominal Insulation Thickness Nominal Sheath Thickness Min. Overall Diameter Max. Overall Diameter Approx. Weight
No.×mm2 　 mm mm mm mm kg/km
1×1.0 1 0.7 0.8 3.9 4.8 26
1×1.5 1 0.7 0.8 4.2 5.0 34
1×2.5 1 0.7 0.8 4.6 5.5 46
1×4 1 0.7 0.8 5.2 6.3 65
1×6 1 0.7 0.8 5.7 6.8 90
1×1.0 2 0.7 0.8 4.0 4.9 31
1×1.5 2 0.7 0.8 4.3 5.2 39
1×2.5 2 0.7 0.8 4.7 5.6 51
1×4 2 0.7 0.9 5.3 6.4 72
1×6 2 0.7 0.9 5.9 7.1 99
1×10 2 0.7 0.9 6.7 8.1 141
1×16 2 0.7 0.9 7.6 9.2 205
1×25 2 0.9 1.0 9.4 11.4 318
1×35 2 0.9 1.1 10.6 12.8 482

Electrical Properties

Conductor Operating Temperature 90°C
Ambient Temperature 30°C

Current-Carrying Capacities (Amp) according to BS 7671:2008 table 4E1A

Conductor cross- sectional area Ref. Method A (enclosed in conduit in thermally insulating wall etc) Ref. Method B (enclosed in conduit on a wall or in trunking etc) Ref. Method C (clipped direct) Ref. Method F (in free air or on a perforated cable tray, horizontal or vertical etc) Touching Ref. Method G (in free air) Spaced by one cable diameter
2 cables, single-phase a.c. or d.c. 3 or 4 cables, three -phase a.c. 2 cables, singlephase a.c. or d.c 3 or 4 cables, threephase a.c. 2 cables, single-phase a.c. or d.c. flat and touching 3 or 4 cables, three-phase a.c. flat and touching or trefoil 2 cables, singlephase a.c. or d.c. flat 3 cables, threephase a.c. flat 3 cables, threephase a.c. trefoil 2 cables, single-phase a.c. or d.c. or 3 cables three-phase a.c. flat
Horizontal Vertical
1 2 3 4 5 6 7 8 9 10 11 12
mm2 A A A A A A A A A A A
1.0 14 13 17 15 19 17.5 - - - - -
1.5 19 17 23 20 25 23 - - - - -
2.5 26 23 31 28 34 31 - - - - -
4 35 31 42 37 46 41 - - - - -
6 45 40 54 48 59 54 - - - - -
10 61 54 75 66 81 74 - - - - -
16 81 73 100 88 109 99 - - - - -
25 106 95 133 117 143 130 161 141 135 182 161
35 131 117 164 144 176 161 200 176 169 226 201

Voltage Drop (Per Amp Per Meter) according to BS 7671:2008 table 4E1B

Conductor cross- sectional area 2 cables d.c. 　2 cables, single-phase a.c. 3 or 4 cables, three-phase a.c.
Ref. Methods A&B (enclosed in conduit or king) Ref. Methods C, F&G direct, on trays or Ref. Methods A&B (enclosed in conduit or trunking) Ref. Methods C, F&G (clipped direct, on trays or in free air)
Cables touching Cables spaced* Cables touching, Trefoil Cables touching, Flat Cables spaced*, Flat
1 2 3 4 5 6 7 8 9
mm2 mV/A/m mV/A/m mV/A/m mV/A/m mV/A/m mV/A/m mV/A/m
1.0 46 46 46 46 40 40 40 40
1.5 31 31 31 31 27 27 27 27
2.5 19 19 19 19 16 16 16 16
4 12 12 12 12 10 10 10 10
6 7.9 7.9 7.9 7.9 6.8 6.8 6.8 6.8
10 4.7 4.7 4.7 4.7 4.0 4.0 4.0 4.0
16 2.9 2.9 2.9 2.9 2.5 2.5 2.5 2.5
　 　 r x z r x z r x z r x z r x z r x z r x z
25 1.85 1.85 0.31 1.90 1.85 0.190 1.85 1.85 0.28 1.85 1.60 0.27 1.65 1.60 0.165 1.60 1.60 0.190 1.60 1.60 0.27 1.65
35 1.35 1.35 0.29 1.35 1.35 0.180 1.35 1.35 0.27 1.35 1.15 0.25 1.15 1.15 0.155 1.15 1.15 0.180 1.15 1.15 0.26 1.20

Note: *Spacings larger than one cable diameter will result in a large voltage drop.
r = conductor resistance at operating temperature
x = reactance
z = impedance