ZCO3 & ZCO3-SH Main Signalling Cables (AC Electrifi ed High Speed Lines)

Application

The ZCO3 & ZCO3-SH Main Signalling 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=0.21 at inductive voltage 100V/km) and are suitable for installation in high speed railway lines electrifi ed at 25KV ac.

Standards

● SNCF CT 445
● NF F 55-698

Construction

Conductors
Solid annealed copper, 1.0 mm² nominal cross section area.

Insulation
Solid polyethylene.

Cabling Element
Four conductors are twisted to form a quad.

Stranding
Quads are helically stranded to get the cable core.

Core Wrapping
Plastic tape(s) with overlapping.

Inner Sheath
Low density polyethylene. LSZH FR option can be offered upon request to NF C 32 070.2.2 (C1).

Electrostatic Shield
Corrugated copper tape.

Intermediate Sheath
Low density polyethylene. LSZH FR option can be offered upon request to NF C 32 070.2.2 (C1).

Electromagnetic Shield
Two helically applied steel tapes (0.5mm).

Outer Sheath
PE/PVC compound. LSZH FR option can be offered upon request to NF C 32 070.2.2 (C1).

Remarks
ZCO3: PE/PVC Sheath; ZCO3-SH: LSZH Sheath.

Electrical Characteristics at 20℃

Nominal Conductor Diameter	mm	1.13
Nominal Cross Section Area	mm²	1.0
Maximum Conductor Resistance (DC)	Ω/km	18.1
Minimum Insulation Resistance @500 V DC (3mins)	MΩ.km	5000
Maximum Mutual Capacitance @1000Hz (AC)	nF/km	40
Maximum Capacitance Unbalance @800Hz	pF/500m	400
Dielectric Strength, conductor to conductor (DC voltage 3mins)	V	4500
Operating Voltage AC/DC	V	450/750

Reduction Factor

Inductive voltage(V/km)	50	70	100	370	400	470
Reduction factor @50Hz	0.42	0.30	0.20	0.16	0.18	0.31

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
		Inner	Interm.	Outer
1.13mm Conductor, 2.33 Insulated Wire
RS/ZCO3-2Y2Y(K)2YB2Y-2Q1S	2	0.8	1.0	1.6	27.0	1295
RS/ZCO3-2Y2Y(K)2YB2Y-4Q1S	4	0.8	1.0	1.6	29.5	1490