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BS 5308 Cables
BS5308 Part 1
BS5308 Part 1 / Type 1 (unarmoured cables)
BS5308 Cable Part 1 Type1 MG-XLPE-OS-LSOH
Application
The unarmoured fire resistant versions (Part 1 Type 1) are typically used in chemical and process
industries where there is danger of fire.
Construction
Conductor |
Annealed copper, Class 2 |
Insulation |
Mica glass tape, XLPE (Cross Linked Polyethylene), or PE (optional) |
Pairing |
Two insulated conductors uniformly twisted together with a lay not exceeding 100mm |
Colour code |
See technical information |
Binder tape |
PETP transparent tape |
Collective screen |
Aluminium/polyester tape is applied over the laid up pairs metallic side down in contact with tinned copper drain wire, 0.5mm² |
Outer sheath |
LSOH(Low Smoke Zero Halogen) sheath Flame retardant to IEC60332-3-22 Fire resistant to IEC60331 Halogen free to IEC60754-1 Low smoke emission to IEC61034-1-2 |
Sheath colour |
Black or blue |
Mechanical and Electrical Properties
Operating temperature: -20˚C up to + 90˚C( fixed installation) 0˚C to +50˚C(during operation )
Minimum bending radius: 5 x overall diameter
Conductor Area Size |
mm 2 |
0.5 |
0.75 |
1.0 |
1.5 |
Conductor Stranding |
No. x mm |
7 x 0.3 |
7 x 0.37 |
7 x 0.43 |
7 x 0.53 |
Conductor resistance max |
ohm/km |
39 |
24.5 |
18.1 |
12.1 |
Insulation resistance min |
Gohm/km |
5 |
5 |
5 |
5 |
Capacitance unbalance at 1 kHz(pair to pair screen) |
pF/250m |
|
250 |
|
Max. Mutual Capacitance @ 1 kHz forNon OS or OS cables (except one-pair and two-pairs) |
pF/m |
115 |
115 |
115 |
115 |
Max. Mutual Capacitance @ 1 kHz IS/OS cables (include 1 pair and 2 pair) |
pF/m |
75 |
75 |
75 |
75 |
Max. L/R Ratio for adjacent cores(Inductance/ Resistance) |
μH/ohm |
25 |
25 |
25 |
40 |
Test voltage |
Core to core |
V |
1000 |
1000 |
1000 |
1000 |
Core to screen |
V |
1000 |
1000 |
1000 |
1000 |
Rated voltage max |
V |
300/500 |
300/500 |
300/500 |
300/500 |
No.of Pairs |
No.and Dia. of Wires |
Nominal Conductor Cross-Sectional Area |
Nominal Thickness of Insulation |
Nominal Thickness of Sheath |
Nominal Dia. of Cable |
Approx.Weight |
|
no./mm |
mm2 |
mm |
mm |
mm |
kg/km |
1 |
7/0.43 |
1 |
0.6 |
1.4 |
7.8 |
89 |
2 |
7/0.43 |
1 |
0.6 |
1.4 |
9.2 |
121 |
5 |
7/0.43 |
1 |
0.6 |
1.4 |
13.9 |
298 |
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