Railway Cables

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

Application

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

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