ZPAU & ZPAU-SH Main Signalling Cables (AC Electrified Lines)
Applications :
- The cables are designed for connection between traffi c control centers and equipment shelters along the trackside. The cables are specially designed to give good induction protection (R.F= 0.26 at inductive voltage 100V/km) and are suitable for installation in intercity railways electrifi ed at 25KV ac.
Standards :
- SNCF CT 445/SNCT ST 698G
- NF F 55-698
Construction :
- Conductors : Solid annealed copper, 1.0/1.5 mm sq nominal cross section area.
- Insulation : Solid polyethylene.
- Cabling Element : Each two conductors are twisted together to form a pair.
- Stranding : Pairs are helically stranded in layers to form the cable core.
- Core Wrapping : Plastic tape(s) with overlapping.
- Inner Sheath : PE sheath. LSZH FR option can be offered upon request to NF C 32 070.2.2 (C1).
- Electrostatic Shield : One corrugated copper tape.
- Intermediate Sheath : PE/PVC sheath. LSZH FR option can be offered upon request to NF C 32 070.2.2 (C1).
- Electromagnetic Shield : Two helically applied steel tapes of 0.5mm.
- Outer Sheath : PE/PVC compound. LSZH FR option can be offered upon request to NF C 32 070.2.2 (C1).
- Remarks : ZPAU: PE/PVC Sheath; ZPAU-SH: LSZH Sheath.
Electrical Characteristics at 20 °C :
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Nominal Conductor Diameter mm 1.13 1.38 Nominal Cross Section Area mm2 1.0 1.5 Maximum Conductor Resistance (DC) Ω/km 18.1 12.31 Minimum Insulation Resistance @500 V DC (3mins) MΩ.km 5000 5000 Maximum Mutual Capacitance @1000Hz (AC) nF/km 55 55 Maximum Capacitance Unbalance (pair to pair) @800Hz 100% cases pF/500 m 400 400 90% cases pF/500 m 200 200 Attenuation @45KHz dB/km 2.5 2.5 Characteristic Impedance @45KHz Ω 120 120 Dielectric Strength, conductor to conductor (DC voltage 3secs) V 4500 4500 Operating Voltage (AC/DC) V 450/750 450/750 Peak Value (AC) V 900 900
Mechanical and Thermal Properties :
- Minimum Bending Radius : 8xOD (static); 16xOD (dynamic).
- Temperature Range : -40°C to +70°C (during operation); -20°C +50°C (during installation).
Reduction Factor :
-
Inductive Voltage (V/km) Em 28 32 37 42 47 50 70 80 100 120 170 225 Reduction Factor @50Hz Rk 0.75 0.70 0.60 0.50 0.40 0.35 0.30 0.28 0.26 0.25 0.24 0.25
Dimensions and Weight :
Cable Code | No. of Pairs | Nominal Sheath Thickness mm |
Nominal Overall Diameter mm |
Nominal Weight kg/km |
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Inner | Interm. | Outer | ||||
1.13mm Conductor, 2.3mm Insulated Wire | ||||||
RS/ZPAU-2Y2Y(K)2YB2Y-1P1S | 1 | 1.0 | 0.8 | 1.6 | 16.2 | 490 |
RS/ZPAU-2Y2Y(K)2YB2Y-2P1S | 2 | 1.0 | 0.8 | 1.6 | 17.0 | 550 |
RS/ZPAU-2Y2Y(K)2YB2Y-3P1S | 3 | 1.0 | 0.8 | 1.6 | 22.2 | 820 |
RS/ZPAU-2Y2Y(K)2YB2Y-4P1S | 4 | 1.0 | 0.8 | 1.6 | 23.8 | 890 |
RS/ZPAU-2Y2Y(K)2YB2Y-7P1S | 7 | 1.0 | 0.8 | 1.7 | 26.7 | 1080 |
RS/ZPAU-2Y2Y(K)2YB2Y-14P1S | 14 | 1.2 | 0.8 | 1.8 | 32.3 | 1560 |
RS/ZPAU-2Y2Y(K)2YB2Y-21P1S | 21 | 1.2 | 1.1 | 2.0 | 37.2 | 1990 |
RS/ZPAU-2Y2Y(K)2YB2Y-28P1S | 28 | 1.2 | 1.1 | 2.2 | 41.4 | 2380 |
RS/ZPAU-2Y2Y(K)2YB2Y-56P1S | 56 | 1.3 | 1.3 | 2.5 | 52.9 | 3700 |
1.38mm Conductor, 2.55mm Insulated Wire | ||||||
RS/ZPAU-2Y2Y(K)2YB2Y-14P1.5S | 14 | 1.2 | 0.8 | 1.8 | 35.0 | 2050 |
RS/ZPAU-2Y2Y(K)2YB2Y-21P1.5S | 21 | 1.2 | 1.1 | 2.0 | 39.5 | 2525 |
UV Resistant |
Anti Induction |
Mineral Oil Resistant |
Rated voltage |
Buried in Ciround |
Laid In Ducts |
PE Sheath |
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PVC Sheath |
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LSZH Sheath |
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