TYPE A1, A2 & A3 Railway Signalling Cable

Application

The TYPE A1, A2 & A3 Railway Signalling Cable 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