Description:
BS5308 / PAS5308 Cables
BS5308 / PAS5308 cables are designed to connect electrical instrumentation and communication systems in and around process plants in the oil, gas, petro-chemical industries, power generators and other process industries.
They may also be used on intrinsically safe circuits and are not for direct connection to the public mains supply. The armoured cable versions are suitable for direct burial. They are also available with mica-taped conductors, where they also comply with IEC 60331.
To many specifiers BS5308 is regarded as “the” standard for instrumentation cables and it’s replacement by BS EN 50288-7 removes
cable designs which are so well established that withdrawal of the standard could cause some difficulties. Cables manufactured exactly
to BS5308 are not covered in the new BS EN 50288-7 standard and so to avoid the complete loss of BS5308, it has been revised and
reissued as PAS5308, a Publically Available Specification (PAS). This does not carry the same weight as a BS5308 did previously
but it allows for the technical content (with some additions/minor modifications) to be retained in a published document.
The data provided in this section relates primarily to BS5308 as this is still more commonly used than PAS5308
PAS 5308 cables have addition options including XLPE insulation and alternative core colours.
Temperature Rating: 65°C (maximum conductor operating temperature).
Conductors
Plain copper wire. Classes 1, 2 and 5 to IEC 60228
Insualtion & Sheathing Materials
Polyethylene to BS6234 type 03C. PVC type TI1 to BSEN 50363, RP PVC type TM2 to BS7655, LSHF type LTS3 to BS7655
LSHF – Low Smoke Halogen Free
Part 1 Type 1 (unarmoured)
These have polyethylene insulation and a reduced propagation PVC sheath
Non-standard sheath variants are polyethylene or LSHF
Part 1 Type 2 (armoured)
These have polyethylene insulation, polyethylene bedding and a Reduced propagation PVC sheath
Bedding variants are PVC,reduced propagation PVC, or LSHF
Sheath variants are polyethylene, or LSHF
Armour: Galvanised mild steel to BS EN 10257-1
Outer Sheath flame retardant to IEC 60332-3C (NMV 1.5) Minimum Oxygen index 30%. Maximum HCL emission @ 800°C: 15%
Part 2 Type1 (unarmoured)
These have PVC insulation and a reduced propagation PVC sheath
Sheath variants are polyethylene or LSHF
Part 2 Type 2 (armoured)
These have PVC insulation , PVC bedding and a reduced propagation PVC sheath
Bedding variants are reduced propagation PVC, or LSHF
Sheath variants are polyethylene, or LSHF
Armour: Galvanised mild steel to BS EN 10257-1
Outer Sheath flame retardant to IEC 60332-3C (NMV 1.5) Minimum Oxygen index 30%. Maximum HCL emission @ 800°C: 15%