| Specification |
: |
BS 7629 - Part 1 |
| |
|
|
| Conductor |
: |
Solid(Class-1) -or- Stranded(Class-2) copper to BS 6360 |
| Insulation |
: |
Cross linked compound type EI2 or GP4 or E15 to BS 7655. When necessary, a fire performant tape may be applied over the conductor or over the insulation. |
| |
|
|
| Lay-up |
: |
A drain wire shall be run along the lay-up cores |
| Screen |
: |
Laminated Aluminum tape bonded to a baking material, helically applied with 25% overlap, the metallic side down. |
| Sheath |
: |
LTS 3 compound to BS 7655: Section 6.1 |
| Armouring |
: |
Single layer of Galvanized Steel Wires |
| Sheath |
: |
LTS 3 compound to BS 7655: Section 6.1 |
| Rated Voltage |
: |
300/500 V |
| Conductor Resistance |
: |
to BS 6360 |
| |
|
|
| Spark Test on Insulation |
: |
to BS 5099 |
| Voltage Test |
: |
2000 V ac |
| Resistance to fire |
: |
to BS 6387 - category C |
| Resistance to fire with water |
: |
to BS 6387 - category W |
| Resistance to fire with mechanical shock |
: |
to BS 6387 - category Z |
| Flame propagation test on single cable |
: |
to BS 4066 - part 1 |
| Smoke emission |
: |
to BS 7622 |
| Minimum Transmittance |
: |
80% for cables of diameter <= 20mm 60% for cables of diameter <= 20mm to 40mm |
Non-sheathed cables to BS 7211
300/500V : H05Z-U,K
