BS 5308 PART 1 TYPE 1 Collectively Screened Unarmoured Instrument Cables
Applications
The unarmoured versions (Part 1 Type 1) are generally use for indoor installation and suitable for wet and damp areas. Generally used within industrial process manufacturing plants for communication, data and voice transmission signals and services, Also used for the interconnection of electrical equipment and instruments, typically in chemical or petrolchemical industry.
Construction
| Conductor | Annealed or tinned copper, sizes: 0.5mm^2 and 0.75mm^2 mulitistranded(Class 5), 1.5mm^2 multistranded(Class 2) to BS6360 |
| Insulation | PE (XLPE) |
| Pairing | Two insulated conductors uniformly twisted together with a lay not exceeding 100mm |
| Colour code | Multicore cables: up to 40 cores yellow with black numbers, 41 -80 cores black with yellow numbers. Multipair cables: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, 0.5mm^2 |
| Outer sheath | PVC Sheath, type TM 1 or type 6 to BS 6746 |
| Sheath colour | Black or blue |
Mechanical and Electrical Properties
| Operating temperature | -40C up to + 70C( fixed installation) |
| 0C to +50C(during operation ) |
| Minimum bending radius | 5 x overall diameter |
| Conductor Area Size | mm 2 | 0.5 | 0.75 | 1.5 |
| Conductor Stranding | No. x mm | 16 x 0.2 | 24 x 0.2 | 7 x 0.53 |
| Conductor resistance max | ohm/km | 39.7 | 26.5 | 12.3 |
| Insulation resistance min | Mohm/km | 25 | 25 | 25 |
| Max. Mutual Capacitance:pair or adjacent cores | pF/m | 250 | 250 | 250 |
| Capacitance between any core or screen max. | pF/m | 400 | 400 | 400 |
| Max. L/R Ratio for adjacentcores(Inductance/Resistance) | μH/ohm | 25 | 25 | 40 |
| Test voltage | Core to core | V | 1000 | 1000 | 1000 |
| Core to screen | V | 1000 | 1000 | 1000 |
| Rated voltage max | V | 300/500 | 300/500 | 300/500 |
Parameter
| No.of Cores | 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 | mm^2 | mm | mm | mm | kg/km |
| 1 | 16/0.2 | 0.5 | 0.6 | 0.8 | 6.2 | 60 |
| 2 | 16/0.2 | 0.5 | 0.6 | 0.8 | 7.6 | 80 |
| 5 | 16/0.2 | 0.5 | 0.6 | 1.1 | 12.4 | 200 |
| 10 | 16/0.2 | 0.5 | 0.6 | 1.2 | 16.5 | 340 |
| 15 | 16/0.2 | 0.5 | 0.6 | 1.3 | 19.2 | 480 |
| 20 | 16/0.2 | 0.5 | 0.6 | 1.3 | 21.7 | 570 |
| 30 | 16/0.2 | 0.5 | 0.6 | 1.5 | 26.4 | 880 |
| 50 | 16/0.2 | 0.5 | 0.6 | 1.7 | 33.4 | 1310 |
| 1 | 24/0.2 | 0.75 | 0.6 | 0.8 | 6.7 | 75 |
| 2 | 24/0.2 | 0.75 | 0.6 | 0.8 | 8.2 | 100 |
| 5 | 24/0.2 | 0.75 | 0.6 | 1.2 | 13.8 | 250 |
| 10 | 24/0.2 | 0.75 | 0.6 | 1.3 | 18.4 | 450 |
| 15 | 24/0.2 | 0.75 | 0.6 | 1.3 | 21.1 | 600 |
| 20 | 24/0.2 | 0.75 | 0.6 | 1.5 | 24.4 | 800 |
| 30 | 24/0.2 | 0.75 | 0.6 | 1.7 | 29.5 | 1080 |
| 50 | 24/0.2 | 0.75 | 0.6 | 2 | 37.6 | 1860 |
| 1 | 7/0.53 | 1.5 | 0.6 | 0.8 | 7.5 | 100 |
| 2 | 7/0.53 | 1.5 | 0.6 | 0.9 | 9.3 | 150 |
| 5 | 7/0.53 | 1.5 | 0.6 | 1.2 | 15.6 | 360 |
| 10 | 7/0.53 | 1.5 | 0.6 | 1.3 | 20.9 | 670 |
| 15 | 7/0.53 | 1.5 | 0.6 | 1.5 | 24.6 | 970 |
| 20 | 7/0.53 | 1.5 | 0.6 | 1.5 | 27.8 | 1230 |
| 30 | 7/0.53 | 1.5 | 0.6 | 1.7 | 33.7 | 1730 |
| 50 | 7/0.53 | 1.5 | 0.6 | 2 | 43 | 2740 |
