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 are suitable for installation in ducts.

Standard

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

Cable Construction

C3
  • 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