BS 7917 150/250V HF-EPR Insulated, SW2/SW4 Sheathed, Collectively Screened Armoured Fire Resistant Instrumentation & Control Cables
Applications
- 150/250V HF-EPR Insulated SW2/SW4 Sheathed Collectively Screened Armoured Fire Resistant Instrumentation & Control Cables are designed for fixed wiring in ships and on mobile offshore units, suitable for use in instrumentation, lighting and control circuits where fire integrity is essential.
Standards
- BS 7917
- IEC 60331-31 Fire resistant
- IEC 60332-3A Flame retardant
- IEC 60754-1; IEC 60754-2 Corrosivity
- IEC 61034-2 Smoke density
- Cold bend and impact (-40??C) (on request)
- CSA C22.2 No. 38-95 (on request)
Construction
 |
| Conductor | Tinned copper wire stranded circular cl. 2 BS 6360/IEC 60228 |
|---|---|
| Insulation | Mica tape + HF-EPR GP4 according to BS 7655 1.2. |
| Lay-up | Pairs, triples. |
| Collective Screen | Aluminium/polyester tape + drain wire tinned copper. |
| Inner Sheath | Halogen free thermosetting compound SB1 according to BS 7917. |
| Armour | Galvanized steel wire braid. Tinned bronze wire braid can be offered upon request. |
| Outer Sheath | Halogen free thermosetting compound SW4 according to BS 7655 2.6 or reduced halogen thermosetting compound SW2 according to BS 7655 2.6. |
Mechanical and Thermal Properties
| Minimum Internal Bending Radius | 8??OD |
|---|---|
| Temperature Range | -40°C ~ +90°C |
Dimensions and Weight
| Construction No. of cores??Cross section | Nominal Insulation Thickness | Nominal Inner Sheath Thickness | Minimum Diameter Over Inner Sheath | Maximum Diameter Over Inner Sheath | Nominal Armour Wire Diameter | Nominal Outer Sheath Thickness | Minimum Overall Diameter | Maximum Overall Diameter | Approx. Weight |
|---|---|---|---|---|---|---|---|---|---|
| mm2 | mm | mm | mm | mm | mm | mm | mm | mm | kg/km |
| Multipair | |||||||||
| 3??2??0.75 | 0.8 | 1.2 | 14.0 | 16.0 | 0.3 | 1.4 | 18.1 | 20.5 | 450 |
| 7??2??0.75 | 0.8 | 1.4 | 18.6 | 20.7 | 0.3 | 1.5 | 22.9 | 25.8 | 720 |
| 12??2??0.75 | 0.8 | 1.6 | 24.4 | 27.0 | 0.3 | 1.7 | 29.1 | 32.7 | 1080 |
| 20??2??0.75 | 0.8 | 1.8 | 30.8 | 34.0 | 0.45 | 2.0 | 36.8 | 40.7 | 1480 |
| 27??2??0.75 | 0.8 | 1.9 | 35.0 | 38.4 | 0.45 | 2.2 | 41.4 | 45.9 | 2140 |
| 37??2??0.75 | 0.8 | 2.1 | 38.8 | 42.6 | 0.45 | 2.3 | 45.4 | 50.1 | 2710 |
| 3??2??1 | 0.8 | 1.2 | 14.8 | 16.8 | 0.3 | 1.4 | 18.9 | 21.3 | 460 |
| 7??2??1 | 0.8 | 1.4 | 19.6 | 22.0 | 0.3 | 1.6 | 24.1 | 27.1 | 780 |
| 12??2??1 | 0.8 | 1.6 | 25.8 | 28.5 | 0.3 | 1.8 | 30.7 | 34.4 | 1170 |
| 20??2??1 | 0.8 | 1.8 | 32.6 | 35.8 | 0.45 | 2.1 | 38.8 | 43.2 | 1860 |
| 27??2??1 | 0.8 | 2.0 | 37.3 | 40.8 | 0.45 | 2.2 | 43.7 | 48.3 | 2330 |
| 37??2??1 | 0.8 | 2.2 | 41.3 | 45.2 | 0.45 | 2.4 | 48.1 | 53.3 | 2980 |
| Multitriple | |||||||||
| 3??3??0.75 | 0.8 | 1.3 | 15.0 | 17.0 | 0.3 | 1.4 | 19.1 | 21.5 | 510 |
| 7??3??0.75 | 0.8 | 1.4 | 20.5 | 23.0 | 0.3 | 1.6 | 25.1 | 28.1 | 810 |
| 12??3??0.75 | 0.8 | 1.7 | 25.6 | 28.3 | 0.45 | 1.9 | 31.4 | 35.1 | 1370 |
| 3??3??1 | 0.8 | 1.3 | 15.8 | 17.8 | 0.3 | 1.5 | 20.1 | 22.9 | 550 |
| 7??3??1 | 0.8 | 1.5 | 21.9 | 24.4 | 0.3 | 1.7 | 26.6 | 29.7 | 910 |
| 12??3??1 | 0.8 | 1.7 | 27.1 | 29.8 | 0.45 | 2.0 | 33.1 | 36.9 | 1510 |