TYPE E3 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

E3
  • Conductors: Tinned stranded copper, according to IEC 60228 class 2& BS 6360.
  • Insulation: LSZH or EPR Type GP4 to BS 7655.
  • Screen: Aluminium tape.
  • Drain Wire: 2.5 mm² fl exible tinned copper.
  • Sheath: LSZH.

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 E3
RS/E3-3G(St)H-1P2.5S 1 x 2 x 2.5 50/0.25 3.8 15.0/20.0 410

Routine test voltage: 2.5kV for 5 minutes