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Railway Cables
RAILSIG/RAILOPTICS/RAILDATA/RAILCOX Railway Telecom Cables
Scada/Pilot Cables NR/PS/ELP/27220
Application
Scada/Pilot Cables are suitable for modem based supervisory system operating in the VF range from 300 to
3000Hz.
Construction
Conductors： Class 1 solid plain copper conductor 0.9 mm nominal diameter to BS 6360, complies with BS 3573.
Insulation： Solid polyethylene type 03 to BS 6234.
Cabling Element： Two insulated conductors are twisted together to form a pair.
IFilling： Petroleum jelly fi lled.
Core Wrapping： PETP (Polyethylene Terephthalate) tape.
Moisture Barrier： One laminated sheath made of aluminium tape coated with PE-Copolymer on at least one
side is applied with longitudinally overlap.
Inner Sheath： Low density polyethylene type 03C to BS 6234.
Screen： Aluminium wire screen.
Core Wrapping： Water blocking tape.
Sheath： Low density polyethylene type 03C to BS 6234.
Reference Standards
NR/PS/ELP/27220 (formerly RT/E/PS/0034)
Electrical Characteristics at 20℃
| Nominal Conductor Diameter | mm | 0.9 |
|---|---|---|
| Maximum Conductor Resistance | Ω/km | 30.0 |
| Maximum Average Mutual Capacitance @1000Hz (AC) | nF/km | 71 |
| Maximum Capacitance Unbalance @1000Hz pair to pair | pF/500m | 275 |
Mechanical and Thermal Properties
Minimum Bending Radius: 10×OD
Temperature Range: -25℃ to +85℃ (during operation);
-10℃ to +70℃ (during installation)
Dimensions And Weight
| Cable Code | Number of Pairs | Nominal Sheath Thickness mm |
Maximum Overall Diameter mm |
Nominal Weight kg/km |
|---|---|---|---|---|
| 0.9mm Conductor, 1.5mm Insulated Wire | ||||
| RS27220-2Y(F)(L)2YB2Y-10P0.9 | 10 | 1.8 | 25.8 | 755 |
| RS27220-2Y(F)(L)2YB2Y-20P0.9 | 20 | 1.8 | 27.8 | 946 |
| RS27220-2Y(F)(L)2YB2Y-30P0.9 | 30 | 2.0 | 31.8 | 1225 |
| RS27220-2Y(F)(L)2YB2Y-50P0.9 | 50 | 2.0 | 35.8 | 1643 |
| RS27220-2Y(F)(L)2YB2Y-75P0.9 | 75 | 2.2 | 41.6 | 2240 |
| RS27220-2Y(F)(L)2YB2Y-100P0.9 | 100 | 2.2 | 46.6 | 2780 |
Note: The parameters listed above are nominal values as per cable standards. Actual values may vary due to material and manufacturing process variations. For precise specifications or customized requirements, please contact us for further information