Railway Cables

 TYPE A1, A2 & A3 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.

Standards

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

Construction

Conductors
Tinned stranded copper, class 2 according to IEC 60228 & BS 6360.

Insulation
LSZH crosslinked.

Core Wrapping
Plastic tape(s) with overlapping.

Sheath
LSZH (for types A2 & A3 only).

Electrical Characteristics at 20℃

Nominal Conductor Cross Section
mm²
0.75
1.15
Maximum Conductor DC Resistance
Ω/km
24.8
17.3
Voltage Rating
KV
0.65/1.1
Nominal Insulation Thickness
mm
0.85
0.85

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 A1(without sheath)
RS/A1-H-1G0.75(BL)
1x0.75(blue)
7/0.37
-
2.7/3.2
16
RS/A1-H-1G0.75(BR)
1x0.75(brown)
7/0.37
-
2.7/3.2
16
RS/A1-H-1G0.75(RD)
1x0.75(red)
7/0.37
-
2.7/3.2
16
RS/A1-H-1G0.75(OR)
1x0.75(orange)
7/0.37
-
2.7/3.2
16

RS/A1-H-1G0.75(GR)

1x0.75(green)

7/0.37

-

2.7/3.2

16

RS/A1-H-1G0.75(VI)

1x0.75(violet)

7/0.37

-

2.7/3.2

16

RS/A1-H-1G0.75

1x0.75(black)

7/0.37

-

2.7/3.2

16

RS/A1-H-1G1.15

1x1.15(black)

16/0.30

-

2.9/3.6

21

Type A2(with sheath)

RS/A2-3GH-1G0.75

1x0.75

7/0.37

0.7

4.0/5.0

30

RS/A2-3GH-1G1.15

1x1.15

16/0.30

0.7

4.3/5.3

35

Type A3(with sheath)

RS/A3-3GH-2G0.75

2x0.75

7/0.37

0.9

6.7/8.8

67

RS/A3-3GH-4G0.75

4x0.75

7/0.37

1.0

8.0/10.4

108

RS/A3-3GH-6G0.75

6x0.75

7/0.37

1.1

9.7/12.5

160

RS/A3-3GH-10G0.75

10x0.75

7/0.37

1.2

12.6/16.1

259

RS/A3-3GH-14G0.75

14x0.75

7/0.37

1.3

13.8/17.7

495

RS/A3-3GH-36G0.75

36x0.75

7/0.37

1.6

21.6/26.9

752

RS/A3-3GH-48G0.75

48x0.75

7/0.37

1.6

24.3/30.7

963