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ZPFU & ZPFU-SH Main & Local Signalling Cables
(DC Electrifi ed Lines)
Application
ZPFU & ZPFU-SH Main & Local Signalling Cables are designed for the main signalling circuits of 1500V DC
electrifi ed lines.
Reference Standards
SNCF CT 445
NF F 55-698
Construction
Conductors: Solid annealed copper, 1.0mm² nominal cross section area.
Insulation: Solid polyethylene.
Cabling Element: Two conductors are twisted to form a pair.
Stranding: Pairs are helically stranded to form the cable core.
Core Wrapping: Plastic tape(s) with overlapping.
Inner Sheath: PE. LSZH FR option can be offered upon request to NF C 32 070.2.2 (C1).
Mechanical Protection: Two helically applied steel tapes (0.15, 0.2/0.5mm, depending on pair count).
Outer Sheath: PE/PVC. LSZH FR option can be offered upon request to NF C 32 070.2.2 (C1).
Remarks: ZPFU: PE/PVC Sheath; ZPFU-SH: LSZH Sheath.
Electrical Characteristics at 20℃
| 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 @1000Hz | pF/500 m | 400 | 400 |
| 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 |
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 |
Armour Thickness mm |
|
|---|---|---|---|---|---|---|
| Inner | Outer | |||||
| 1.13mm Conductor, 2.3 Insulated Wire | ||||||
| RS/ZPFU-2Y2YB2Y-1P1S | 1 | 1.0 | 1.5 | 11.7 | 207 | 0.15 |
| RS/ZPFU-2Y2YB2Y-2P1S | 2 | 1.0 | 1.5 | 12.9 | 257 | 0.2 |
| RS/ZPFU-2Y2YB2Y-4P1S | 4 | 1.0 | 1.6 | 16.8 | 509 | 0.2 |
| RS/ZPFU-2Y2YB2Y-7P1S | 7 | 1.0 | 1.7 | 19.0 | 653 | 0.5 |
| RS/ZPFU-2Y2YB2Y-14P1S | 14 | 1.2 | 1.8 | 24.1 | 1011 | 0.5 |
| RS/ZPFU-2Y2YB2Y-21P1S | 21 | 1.2 | 2.0 | 27.8 | 1304 | 0.5 |
| RS/ZPFU-2Y2YB2Y-28P1S | 28 | 1.2 | 2.2 | 31.0 | 1594 | 0.5 |
| RS/ZPFU-2Y2YB2Y-56P1S | 56 | 1.3 | 2.5 | 40.5 | 2630 | 0.5 |
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