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Fire Resisting Cable |
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Fire Resisting Cables
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 (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 |
IEC60754-2; EN 50267-2-2 |
Minimum Smoke Emission |
IEC 61034-2; EN 61034-2 |
VOLTAGE RATING
450/750V
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.
CPC (Circuit Protective Conductor) : Uninsulated copper conductor.
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 |
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|---|---|---|---|---|---|---|
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 |
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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 |
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Horizontal |
Vertical |
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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. |
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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) |
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Cables touching |
Cables spaced* |
Cables touching, Trefoil |
Cables touching, flat |
Cables spaced*, flat |
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
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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 |
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1.0 |
46 |
46 |
46 |
46 |
40 |
40 |
40 |
40 |
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1.5 |
31 |
31 |
31 |
31 |
27 |
27 |
27 |
27 |
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2.5 |
19 |
19 |
19 |
19 |
16 |
16 |
16 |
16 |
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4 |
12 |
12 |
12 |
12 |
10 |
10 |
10 |
10 |
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6 |
7.9 |
7.9 |
7.9 |
7.9 |
6.8 |
6.8 |
6.8 |
6.8 |
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10 |
4.7 |
4.7 |
4.7 |
4.7 |
4.0 |
4.0 |
4.0 |
4.0 |
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16 |
2.9 |
2.9 |
2.9 |
2.9 |
2.5 |
2.5 |
2.5 |
2.5 |
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|
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