ZPFU & ZPFU-SH Main & Local Signalling Cables|Railway Cables|Railway Signalling & Control Cables

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