cables are designed for railway signalling systems nominal voltage to earth below 1100 volts
Application
The cables are designed for railway signalling systems. The cables are suitable for use in d.c. circuits where the nominal voltage to earth does not exceed 1100 volts and are suitable for installation in ducts.
Standards
NR/PS/SIG/00005(formerly RT/E/PS/00005)
Construction
ConductorsTinned stranded copper, class 2 according to IEC 60228 & BS 6360.
InsulationLSZH crosslinked.
Core WrappingPlastic tape(s) with overlapping.
SheathLSZH (for types A2 & A3 only).
Electrical Characteristics at 20°C
| Nominal Conductor Cross Section | mm² | 0.75 | 1.15 |
| Maximum Conductor DC Resistance | Ω/km | 24.8 | 17.3 |
| Voltage Rating | KV | 0.65/1.1 | |
| Nominal Insulation Thickness | mm | 0.85 | 0.85 |
Mechanical and Thermal Properties
Minimum Bending Radius: 6×OD (static); 15×OD (dynamic)Temperature Range: -25°C to +85°C (during operation); -10°C to +85°C (during installation)
Dimensions And Weight
| Cable Code | No. of cores& NominalConductor CrossSectional AreaNo.×mm² | No. & NominalDiameter of StrandsNo/mm | Nominal SheathThicknessmm | Overall DiameterMin/Maxmm | NominalWeightkg/km |
| Type A1(without sheath) | |||||
| RS/A1-H-1G0.75(BL) | 1x0.75(blue) | 7/0.37 | - | 2.7/3.2 | 16 |
| RS/A1-H-1G0.75(BR) | 1x0.75(brown) | 7/0.37 | - | 2.7/3.2 | 16 |
| RS/A1-H-1G0.75(RD) | 1x0.75(red) | 7/0.37 | - | 2.7/3.2 | 16 |
| RS/A1-H-1G0.75(OR) | 1x0.75(orange) | 7/0.37 | - | 2.7/3.2 | 16 |
RS/A1-H-1G0.75(GR) | 1x0.75(green) | 7/0.37 | - | 2.7/3.2 | 16 |
RS/A1-H-1G0.75(VI) | 1x0.75(violet) | 7/0.37 | - | 2.7/3.2 | 16 |
RS/A1-H-1G0.75 | 1x0.75(black) | 7/0.37 | - | 2.7/3.2 | 16 |
RS/A1-H-1G1.15 | 1x1.15(black) | 16/0.30 | - | 2.9/3.6 | 21 |
Type A2(with sheath) | |||||
RS/A2-3GH-1G0.75 | 1x0.75 | 7/0.37 | 0.7 | 4.0/5.0 | 30 |
RS/A2-3GH-1G1.15 | 1x1.15 | 16/0.30 | 0.7 | 4.3/5.3 | 35 |
Type A3(with sheath) | |||||
RS/A3-3GH-2G0.75 | 2x0.75 | 7/0.37 | 0.9 | 6.7/8.8 | 67 |
RS/A3-3GH-4G0.75 | 4x0.75 | 7/0.37 | 1.0 | 8.0/10.4 | 108 |
RS/A3-3GH-6G0.75 | 6x0.75 | 7/0.37 | 1.1 | 9.7/12.5 | 160 |
RS/A3-3GH-10G0.75 | 10x0.75 | 7/0.37 | 1.2 | 12.6/16.1 | 259 |
RS/A3-3GH-14G0.75 | 14x0.75 | 7/0.37 | 1.3 | 13.8/17.7 | 495 |
RS/A3-3GH-36G0.75 | 36x0.75 | 7/0.37 | 1.6 | 21.6/26.9 | 752 |
RS/A3-3GH-48G0.75 | 48x0.75 | 7/0.37 | 1.6 | 24.3/30.7 | 963 |
fiber & mica compound insulated fire-proof signal cable
