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 :

  • 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
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
Zero Halogen
IEC 60754-1/NF C20-454
EN 50267-2-1
 
PVC
Sheath
Flame Retardant
NF C32-070-2.1(C2)
IEC 60332-1/EN 50265-2-1

 

 

LSZH
Sheath
Flame Retardant
NF C32-070-2.1(C2)
IEC 60332-1/EN 50265-2-1
Fire Retardant
NF C32-070-2.2(C1)
IEC 60332-3/EN50266
Zero Halogen
IEC 60754-1/NF C20-454
EN 50267-2-1
Low Toxicity
   
   
Low Smoke Emission
IEC 61034/NFC20-902
EN 50268/NF C32-073
Low Corrosivity
EN 50267-2-2/NF C32-074
IEC 60754-2/NF C20-453