Railway Cables

 TYPE C3 Railway Signalling Cable

Application

The cables are designed for railway signalling systems. The cables are suitable for use in d.c. circuits where the nominal voltage to earth does not exceed 1100 volts and installation in ducts.

Standards

● NR/PS/SIG/00005(formerly RT/E/PS/00005)

Construction

Conductors
Tinned stranded copper, class 5 according to IEC 60228 & BS 6360.

Insulation
EPR Type GP4 to BS 7655.

Screen
Aluminium tape.

Drain Wire
2.5 mm² fl exible tinned copper.

Sheath
HDPCP Type RS2 to BS 7655.

Electrical Characteristics at 20℃

Nominal Conductor Cross Section
mm²
2.5
Maximum DC Conductor Resistance
Ω/km
8.21
Minimum Noise Reduction
dB
60
Voltage Rating
KV
0.65/1.1
Nominal Insulation Thickness
mm
1.05

Mechanical and Thermal Properties

Minimum Bending Radius: 6×OD (static); 15×OD (dynamic)
Temperature Range:-25℃ to +85℃ (during operation); -10℃ to +85℃ (during installation)

Dimensions And Weight

Cable Code
No. of cores& Nominal
Conductor Cross Sectional
Area
No.×mm²
No. & Nominal
Diameter of Strands
No/mm
Nominal
Sheath
Thickness
mm
Overall
Diameter
Min/Max
mm
Nominal
Weight
kg/km
Type C3
RS/C3-3G(St)5G-1P2.5S
1×2×2.5
50/0.25
3.8
15.0/20.0
390

Routine test voltage: 2.5kV for 5 minutes