ZPFU & ZPFU-SH Main & Local Signalling Cables (DC Electrified Lines)

Application

The cables are designed for the main signalling circuits of 1500V DC electrifi ed lines.

Standard

  • SNCF CT 445
  • NF F 55-698

Cable Construction

ZPFU & ZPFU-SH Main & Local Signalling Cables (DC Electrified Lines) Railway Cable
Conductors Solid annealed copper, 1.0mm^2 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).
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).
Remark ZPFU: PE/PVC Sheath; ZPFU-SH: LSZH Sheath.

Electrical Characteristics at 20℃

Nominal Conductor Diameter mm 1.13 1.38
Nominal Cross Section Area mm^2 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 Nominal Overall Diameter Nominal Weight Armour Thickness
Inner Outer
    mm mm mm kg/km mm
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