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Railway Cables |  |
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ZCO3 & ZCO3-SH Main Signalling Cables
(AC Electrifi ed High Speed Lines)
Application
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=0.21 at inductive voltage 100V/km) and are suitable for installation in high speed railway lines electrifi ed at 25KV ac.
Standards
● SNCF CT 445
● NF F 55-698
Construction
Conductors
Solid annealed copper, 1.0 mm² nominal cross section area.
Insulation
Solid polyethylene.
Cabling Element
Four conductors are twisted to form a quad.
Stranding
Quads are helically stranded to get the cable core.
Core Wrapping
Plastic tape(s) with overlapping.
Inner Sheath
Low density polyethylene. LSZH FR option can be offered upon request to NF C 32 070.2.2 (C1).
Electrostatic Shield
Corrugated copper tape.
Intermediate Sheath
Low density polyethylene. LSZH FR option can be offered upon request to NF C 32 070.2.2 (C1).
Electromagnetic Shield
Two helically applied steel tapes (0.5mm).
Outer Sheath
PE/PVC compound. LSZH FR option can be offered upon request to NF C 32 070.2.2 (C1).
Remarks
ZCO3: PE/PVC Sheath; ZCO3-SH: LSZH Sheath.
Electrical Characteristics at 20℃
| Nominal Conductor Diameter | mm |
1.13 |
| Nominal Cross Section Area | mm² |
1.0 |
| Maximum Conductor Resistance (DC) | Ω/km |
18.1 |
| Minimum Insulation Resistance @500 V DC (3mins) | MΩ.km |
5000 |
| Maximum Mutual Capacitance @1000Hz (AC) | nF/km |
40 |
| Maximum Capacitance Unbalance @800Hz | pF/500m |
400 |
| Dielectric Strength, conductor to conductor (DC voltage 3mins) | V |
4500 |
| Operating Voltage AC/DC | V |
450/750 |
Reduction Factor
| Inductive voltage(V/km) | 50 |
70 |
100 |
370 |
400 |
470 |
| Reduction factor @50Hz | 0.42 |
0.30 |
0.20 |
0.16 |
0.18 |
0.31 |
Mechanical and Thermal Properties
Minimum Bending Radius: 8×OD (static); 16×OD (dynamic)
Temperature Range: -40℃ to +70℃ (during operation); -20℃ to +50℃ (during installation)
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 |
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1.13mm Conductor, 2.33 Insulated Wire |
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RS/ZCO3-2Y2Y(K)2YB2Y-2Q1S |
2 |
0.8 |
1.0 |
1.6 |
27.0 |
1295 |
RS/ZCO3-2Y2Y(K)2YB2Y-4Q1S |
4 |
0.8 |
1.0 |
1.6 |
29.5 |
1490 |