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

• 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 mm fl exible tinned copper.
• Sheath: LSZH.

Electrical Characteristics at 20℃

Nominal Conductor Cross Section	mm	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.×mm	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