450/750V Mica+XLPE Insulated, LSZH Sheathed Power Cables to BS 7211 (Single Core)
FFX300 07mRZ1-U/R (CU/MGT+XLPE/LSZH 450/750V Class 1/2)
Application
The cables are mainly used in power stations, mass transit underground passenger systems, airports,petrochemical plants, hotels, hospitals and high-rise buildings.
Standards
Basic design adapted from BS 7211:2012
Fire Performance
Circuit Integrity |
IEC 60331-21; BS 6387 |
Flame Retardance |
EN 60332-1-2; IEC 60332-1-2 |
Reduced Fire Propagation |
EN 60332-3-24 ; IEC 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
450/750 V
Cable Construction
Conductor: Annealed copper conductor, solid or stranded according to BS EN 60228 class 1 or class 2.
Fire Barrier: Mica glass tape.
Insulation: XLPE type GP 8 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 | FFX300 07mRZ1-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 | 4.9 | 5.8 | 30 |
| 1×1.5 | 1 | 0.7 | 0.8 | 5.2 | 6.0 | 38 |
| 1×2.5 | 1 | 0.7 | 0.8 | 5.6 | 6.5 | 51 |
| 1×4 | 1 | 0.7 | 0.8 | 6.2 | 7.3 | 70 |
| 1×6 | 1 | 0.7 | 0.8 | 6.7 | 7.8 | 95 |
| 1×1.0 | 2 | 0.7 | 0.8 | 5.0 | 5.9 | 35 |
| 1×1.5 | 2 | 0.7 | 0.8 | 5.3 | 6.2 | 43 |
| 1×2.5 | 2 | 0.7 | 0.8 | 5.7 | 6.6 | 56 |
| 1×4 | 2 | 0.7 | 0.9 | 6.3 | 7.4 | 77 |
| 1×6 | 2 | 0.7 | 0.9 | 6.9 | 8.1 | 104 |
| 1×10 | 2 | 0.7 | 0.9 | 7.7 | 9.1 | 147 |
| 1×16 | 2 | 0.7 | 0.9 | 8.6 | 10.2 | 211 |
| 1×25 | 2 | 0.9 | 1.0 | 10.4 | 12.4 | 325 |
| 1×35 | 2 | 0.9 | 1.1 | 11.6 | 13.8 | 489 |
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, single-phase a.c. or d.c | 3 or 4 cables, three-phase 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, single-phase a.c. or d.c. flat | 3 cables, three-phase a.c. flat | 3 cables, three-phase 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 trunking) | Ref. Methods C, F&G (clipped direct, on trays or in free air) | 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 | 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
