Railway Cables

 TYPE B1 & B2 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 2 according to IEC 60228 & BS 6360.

Insulation
EPR Type GP4 to BS 7655.

Core Wrapping
Plastic tape(s) with overlapping.

Sheath
HDPCP Type RS2 to BS 7655.

Electrical Characteristics at 20℃

Nominal Conductor Cross Section
mm²
0.75
1.5
2.5
10.0
16.0
35.0
70.0
95
Maximum Conductor DC Resistance
Ω/km
24.8
12.2
7.56
1.84
1.16
0.529
0.27
0.195
Voltage Rating
KV
0.65/1.1
Nominal Insulation Thickness
mm
0.85
0.8
0.8
1.0
1.0
1.2
1.4
1.6

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 B1
RS/B1-3G5G-1G0.75
1×0.75
7/0.37
2.0
6.5/8.1
28
RS/B1-3G5G-1G1.5
1×1.5
7/0.53
2.0
6.8/8.5
31

RS/B1-3G5G-1G2.5

1×2.5
7/0.67
2.0
7.2/8.9
34

RS/B1-3G5G-1G10

1×10.0

7/1.35

2.0

9.4/11.8

205

RS/B1-3G5G-1G35

1×35.0

19/1.53

2.0

12.9/16.1

495

Type B2

RS/B2-3G5G-2G1.5

2×1.5

7/0.53

2.0

9.4/12.1

135

RS/B2-3G5G-2G2.5

2×2.5

7/0.67

2.0

10.5/13.1

170

RS/B2-3G5G-2G10

2×10.0

7/1.35

2.0

15.0/18.7

443

RS/B2-3G5G-2G16

2×16.0

7/1.70

2.0

16.7/20.9

625

RS/B2-3G5G-2G35

2×35.0

19/1.53

2.2

22.3/27.8

1232

RS/B2-3G5G-2G70

2×70.0

19/2.14

2.4

28.8/36.0

2053

RS/B2-3G5G-2G95

2×95.0

19/2.52

2.6

33.2/41.5

2968

RS/B2-3G5G-4G0.75

4×0.75

7/0.37

2.0

10.2/12.8

140

RS/B2-3G5G-7G0.75

7×0.75

7/0.37

2.0

11.8/14.7

214

RS/B2-3G5G-10G0.75

10×0.75

7/0.37

2.0

14.4/18.0

280

RS/B2-3G5G-12G0.75

12×0.75

7/0.37

2.0

14.8/18.5

321

RS/B2-3G5G-19G0.75

19×0.75

7/0.37

2.0

17.0/21.3

451

RS/B2-3G5G-27G0.75

27×0.75

7/0.37

2.0

20.1/25.1

602

RS/B2-3G5G-37G0.75

37×0.75

7/0.37

2.2

22.7/28.4

799

RS/B2-3G5G-48G0.75

48×0.75

7/0.37

2.2

25.7/32.2

973

RS/B2-3G5G-4G1.5

4×1.5

7/0.53

2.0

10.9/13.7

217

RS/B2-3G5G-7G1.5

7×1.5

7/0.53

2.0

12.6/15.8

296

RS/B2-3G5G-10G1.5

10×1.5

7/0.53

2.0

15.6/19.4

401

RS/B2-3G5G-12G1.5

12×1.5

7/0.53

2.0

16.0/20.0

437

RS/B2-3G5G-19G1.5

19×1.5

7/0.53

2.0

18.5/23.1

615

RS/B2-3G5G-27G1.5

27×1.5

7/0.53

2.2

22.2/27.8

856

RS/B2-3G5G-37G1.5

37×1.5

7/0.53

2.2

25.1/31.4

1126

RS/B2-3G5G-48G1.5

48×1.5

7/0.53

2.4

28.1/35.1

1494

RS/B2-3G5G-4G2.5

4×2.5

7/0.67

2.0

11.9/14.8

260

RS/B2-3G5G-7G2.5

7×2.5

7/0.67

2.0

13.8/17.2

370

RS/B2-3G5G-10G2.5

10×2.5

7/0.67

2.0

17.1/21.3

520

RS/B2-3G5G-12G2.5

12×2.5

7/0.67

2.0

17.6/22.0

599

RS/B2-3G5G-19G2.5

19×2.5

7/0.67

2.0

20.4/25.5

835

RS/B2-3G5G-27G2.5

27×2.5

7/0.67

2.2

24.6/30.7

1232

RS/B2-3G5G-37G2.5

37×2.5

7/0.67

2.4

27.8/34.7

1623

RS/B2-3G5G-48G2.5

48×2.5

7/0.67

2.6

31.2/39.0

2032

RS/B2-3G5G-6P0.75S

6×2×0.75

7/0.37

2.0

19.7/24.6

372