FAQ
What are BS5308 Cables?
BS5308 is a British Standard, which covers the requirements for a range of instrumentation & signal cables. It is divided into two parts. BS 5308 Part 1 covers polyethylene insulated cables used mainly by the petroleum industry. It specifies requirements for and dimensions of polyethylene insulated cables in pairs with or without screens ?C optionally incorporating single wire armour or a lead sheath with single wire armour. BS 5308 Part 2 covers PVC insulated cables, used mainly in the chemical and petrochemical industries.
What is the difference between BS5308 cable, PAS 5308 cable and EN 50288-7 cable?
| ?? | BS5308-1 | BS5308-2 | PAS5308-1 | PAS5308-2 | EN 50288-7 |
|---|---|---|---|---|---|
| conductor: | |||||
| kind of conductor | solid or stranded multistranded (BS 6360) | stranded multistranded (BS 6360) | solid or stranded multistranded (BS EN 60228) | stranded multistranded (BS EN 60228) | solid stranded multistranded (HD383=IEC 60288 (cl. 1, 2, 5)) |
| copper | plain annealed copper | plain annealed copper | plain annealed copper | plain annealed copper | plain annealed or metal coated |
| dimension | 0.5; 0.75; 1.0; 1.5 mm2 | 0.5; 0.75; 1.5 mm2 | 0.5; 1.0; 1.5; 2.5 mm2 | 0.5; 0.75; 1.5,2.5 mm2 | 0.5; 0.75; 1.0; 1.3; 2.0; 2.5; (4.0) mm2 |
| Insulation: | |||||
| materials | PE type 03 acc. to BS 6234 | PVC type TI1 acc. to BS 6746 | thermoplastic PE? to BS EN 50290?2?23:2002, grade L/MD or a cross?linked PE to BS EN 50290?2?29. |
PVC? to BS EN 50290-2-21:2002, grade TI51. |
a) PVC to EN 50290-2-21 b) Polyethylene to EN 50290-2-23 c) Polypropylene to EN 50290-2-25 d) Halogen free f1ame retardant compound to EN 50290-2-26 e) Cross-linked polyethylen to EN 50290-2-29 |
| range | 300/500V | 300/500V | 300/500V | 300/500V | 90V 300V 500V |
| thickness | LINK 1 | LINK 1 | LINK | LINK | link |
| Cable elements: | |||||
| kind of elements | core pair (twisted) quad (around a single dummy; only for 2 pair) | core pair (twisted) quad (around a single dummy; only for 2 pair) | core pair (twisted) quad (around a single dummy; only for 2 pair) | core pair (twisted) quad (around a single dummy; only for 2 pair) | core pair (twisted) triple (twisted) quad (twisted) |
| twisting of elements | reverse layer or reciprocating lay technique ?? 100mm | reverse layer or reciprocating lay technique ?? 100mm | reverse layer or reciprocating lay technique ?? 100mm | reverse layer or reciprocating lay technique ?? 100mm | lay length clearly defined; depending on conductor size and element; between 100 and 150 mm |
| Individual pair screens |
laminated tape aluminium/PET aluminium thickness ?? 8 ??m PET thickness ??10 ??m (metallic side down, in contact with drain wire + wrapping consisting of one layer tape (50% overlap) or two layers of tape (?? 23??m) (each 25% overlap).) |
laminated tape aluminium/PET aluminium thickness ?? 8 ??m PET thickness ??10 ??m (metallic side down, in contact with drain wire + wrapping consisting of one layer tape (50% overlap) or two layers of tape (?? 23??m) (each 25% overlap).) |
laminated tape aluminium/PET aluminium thickness ?? 8 ??m PET thickness ??10 ??m (metallic side down, in contact with drain wire + wrapping consisting of one layer tape (50% overlap) or two layers of tape (?? 23??m) (each 25% overlap).) |
laminated tape aluminium/PET aluminium thickness ?? 8 ??m PET thickness ??10 ??m(metallic side down, in contact with drain wire + wrapping consisting of one layer tape (50% overlap) or two layers of tape(?? 23??m) (each 25% overlap).) | laminated tape aluminium/PETtotal thickness 24 ??m(metallic side down, in contact with drain wire + wrapping consisting of one layer of plastic tape under and above screen)< |
| drain wire | solid or stranded, tinned annealed copper cross section ?? 0.5mm2 |
solid or stranded, tinned annealed copper cross section ?? 0.5mm2 |
solid or stranded, tinned annealed copper cross section ?? 0.5mm2 |
solid or stranded, tinned annealed copper cross section ?? 0.5mm2 |
solid tinned copper drain wire 0.6mm ?, under individual screen |
| Colour code: | |||||
| Pairs | COLOR LINK | COLOR LINK | COLOR LINK | COLOR LINK | 300V? white and black 500V blue and black |
| Triples | Not defined | Not defined | Not defined | Not defined | 300V? white and black and red 500V blue and black and red |
| Quads | Not defined (exception: 2 pair is a 1 quad construction) | Not defined (exception: 2 pair is a 1 quad construction) | Not defined (exception: 2 pair is a 1 quad construction) | Not defined (exception: 2 pair is a 1 quad construction) | 300V white and black and red and grey 500V blue and black and red and grey |
| Remark: | differentiation of the pairs is defined through different colour codes for each pair; alternatively numbered PET foil around pairs | differentiation of the pairs is defined through different colour codes for each pair; alternatively numbered PET foil around pairs | differentiation the pairs is defined through different colour codes for each pair; alternatively numbered PET foil around pairs | differentiation of the pairs is defined through different colour codes for each pair; alternatively numbered PET foil around pairs | 300V cables are continuously numbered on white core; 500 V on blue core |
| Overall screen: | |||||
| Collective screen | laminated aluminium/PET aluminium thickness ?? 8 m PET thickness ??10 ??m+ drain wire (optional) consisting of solid or stranded, tinned annealed copper cross section ?? 0.5mm2 Wrapping layer of tape under collective screen |
laminated tape aluminium/PET aluminium thickness ?? 8 ??m PET thickness ??10 ??m+ drain wire (optional) consisting of solid or stranded, tinned annealed copper cross section ??0.5mm2 Wrapping layer of tape under collective screen |
laminatedaluminium/PET aluminium thickness ?? 8m PET thickness ??10 ??m drain wire (optional) consisting of solid or stranded, tinned annealed copper cross section ??0.5mm2 Wrapping layer of tape under collective screen |
laminated tape aluminium/PET aluminium thickness ?? 8 ??m PET thickness ??10 ??m + drain wire (optional) consisting of solid or stranded, tinned annealed copper cross section ?? 0.5mm2 Wrapping layer of tape under collective screen | collective screen (24 ??m aluminium/PET) tape + 7 stranded tinned copper drain wire (0.5mm2); overlap of foil min 20%; drain wire in direct contact with metallic side of the foil Wrapping layer of tape under collective screen |
| Metal braid | not defined | not defined | not defined | not defined | tinned copper wires ( C ) wire diameter ?? 0.3 mm filling factor ?? 0.57 mm |
| Metallic protection/armouring: | |||||
| round steel wire SWA |
galvanized steel wire armour 0.9, 1.25, 1.6, 2.0' 2.5mm |
galvanized steel wire armour 0.9, 1.25, 1.6, 2.0' 2.5mm |
galvanized steel wire armour 0.9, 1.25, 1.6, 2.0' 2.5mm |
galvanized steel wire armour 0.9, 1.25, 1.6, 2.0' 2.5mm |
SWA Min. thickness of wires 0.9 mm (see next page for details) |
| flat steel wires with counter helix |
not defined | not defined | not defined | not defined | F (flat galvanised steel wire); G (counter helix) Only defined for overall diameter under armour ?? 15 mm |
| steel or brass tape | not defined | not defined | not defined | not defined | min. thickness of tape; brass:? 0.075 mm steel:? 0.20 mm offered? as double? layer steel tape B |
| Metal braid | not defined | not defined | not defined | not defined | galvanised steel wires ( Q ) wire diameter ?? 0.3 mm filling factor ?? 0.57 mm |
| Bedding/inner sheath: | |||||
| materials | extruded? bedding of type 2C or type 03 black polyethylene compound in accordance with BS 6234??TYPE 2?? extruded bedding of type TM1 or type 6 black PVC compound in accordance with BS 6746(TYPE 3) |
extruded bedding of type TM1 black PVC compound in accordance with BS 6746 | extruded bedding of a PE compound conforming to BS EN 50290-2-24:2002, grade LD(TYPE 2) extruded sheath of a PVC compound conforming to BS EN 50290-2-22:2002, grade TM51(TYPE 3) |
extruded sheath of a PVC compound conforming to BS EN 50290-2-22:2002, grade TM51 |
PVC (EN 50290-2-22) Polyethylene (EN 50290-2-24) Halogen free flame retardant compound LSZH (EN 50290-2-27) |
| Outer sheath: | |||||
| material | extruded? oversheath of type TM1 PVC compound in accordance with BS 6746 | extruded bedding of type TM1 or type 6 black PVC compound in accordance with BS 6746(TYPE 1) extruded? oversheath of type TM1 PVC compound in accordance with BS 6746(TYPE 2) |
extruded sheath of a PVC compound conforming to BS EN 50290-2-22:2002, grade TM51 |
extruded sheath of a PVC compound conforming to BS EN 50290-2-22:2002, grade TM51 |
PVC (EN 50290-2-22) Polyethylene (EN 50290-2-24) Halogen free flame retardant compound LSZH (EN 50290-2-27) |
| thickness | refer standard | refer standard | refer standard | refer standard | Calculated acc. to formular: without metallic protection SRT = 0.04 x D +0.7 (min. 0.8 mm) with metallic protection SRT = 0.028 x D +1.1 (min 1.3 mm) D = Diameter under outer sheath |
| Environmental and other protection: | |||||
| Moisture barriers | not defined | not defined | not defined | not defined | 1) Water swellable tape 2) Water swellable non ?C toxic powder 3) Filling compound 4) Laminated sheath of a longitudinally overlapped metallic foil (150??m) 5) Combination of 1) ?C 4) |
| Chemical protection Multilayer sheath (L)2Y4Y (ALNYC) |
not defined | not defined | not defined | not defined | Multilayer sheath Laminated aluminium (Al) foil with an extruded layer of HDPE + layer of Polyamide (PA) Thickness of Al ?? 15 ??m Thickness of PA ?? 0.3 mm (thickness at any point) |
| Lead sheath: | |||||
| Chemical protection Lead sheath |
Part 1 type 3 cables extruded sheath of lead alloy conforming to BS 801 |
none | Part 1 type 3 cables extruded sheath of lead alloy conforming to BS EN 50307 |
none | M (Lead sheath) complying with EN 50307 can be apllied The thickness is calculated in acc. to the diameter (D) underneath; Formular: LRT = 0.03 x D+0.7mm with a thickness at any point min. ?? 0.66 mm |
What are EN 50288-7 Cables?
Multi-element metallic cables used in analogue and digital communication and control - Part 7: Sectional specification for instrumentation and control cables (english version) (Austrian Standard)
EN 50288-7 allows for many variations including different voltage & temperature ratings, braid armours, fire barriers and chemical resistant beddings. If you cannot see the type required please call us, we will be able to help.