Control Cables

2.5 SQ MM PVC ARMOURED/UNARMOURED COPPER CONTROL CABLES
1.1, KV Conforming to IS : 1554 (Part-1)
No of cores Insulation Thickness (nominal) mm Approx. Overall Diameter mm DC resistance at 20°C max. ohms/km Current Rating (Amp.)
Un armoured Armoured In Ground In Air/Duck
Wire Strip PVC HR PVC PVC HR PVC
2 0.90 13.0 15 7.41 32 39 27 33
3 0.90 13.5 15.5 7.41 27 33 24 29
4 0.90 14.5 16.5 7.41 27 33 24 29
5 0.90 15.5 17.5 7.41 23 28 19 23
6 0.90 17.0 18.5 7.41 21 25 18 22
7 0.90 17.0 18.5 7.41 20 24 17 21
9 0.90 19.5 22.0 20.5 7.41 20 24 17 21
10 0.90 21.0 23.5 22.0 7.41 18 22 15 18
12 0.90 22.0 24.5 23.0 7.41 17 21 14 17
14 0.90 23.0 25.5 24.0 7.41 17 21 13 16
16 0.90 24.5 26.5 25.0 7.41 15 18 13 16
19 0.90 25.5 27.5 26.0 7.41 14 17 12 14
24 0.90 29.5 32.0 30.0 7.41 13 16 11 13
27 0.90 30.0 32.5 30.5 7.41 12 14 10 12
30 0.90 31.0 33.5 32.0 7.41 12 14 10 12
37 0.90 34.0 37.0 34.5 7.41 11 13 9 11
44 0.90 37.0 40.50 37.5 7.41 10 12 8 10
52 0.90 38.5 42.80 39.5 7.41 10 12 8 10
61 0.90 40.5 45.0 42.0 7.41 10 12 7 9
CALCULATED VOLTAGE DROP IN ALUMINUM
CABLES FOR A. C. SYSTEM
Nominal area of conductor Volts / Km / Amps
PVC Cabes XLPE Cabes
Sq. mm 1-Phase 3-Phase 1-Phase 3-Phase
1.5 43.44 37.62 46.34 40.13
2.5 29.04 25.15 30.98 26.83
4 17.79 15.40 18.97 16.43
6 11.07 9.58 11.80 10.22
10 7.40 6.40 7.88 6.83
16 4.59 3.97 4.89 4.24
25 2.88 2.50 3.08 2.66
35 2.10 1.81 2.23 1.93
50 1.55 1.33 1.65 1.43
70 1.10 0.93 1.14 0.99
95 0.79 0.68 0.83 0.72
120 0.63 0.55 0.66 0.576
150 0.52 0.46 0.55 0.48
185 0.42 0.37 0.44 0.39
240 0.34 0.30 0.35 0.31
300 0.29 0.26 0.30 0.26
400 0.24 0.22 0.25 0.22
500 0.23 0.20 0.23 0.20
630 0.21 0.18 0.21 0.18
800 0.19 0.20
1000 0.18 0.18
APPROXIMATE REACTANCE OF 1.1 KV GRADE
CABLE AT 50 Hz
Nominal area of conductor PVC Insulated XLPE Insulated
Single Core Cables Twin & Multicore Single Core Cables twin & Multicore
Unarm Arm Unarm Arm
Sq. mm ohm/km ohm/km ohm/km ohm/km ohm/km ohm/km
6 0.127 0.148 0.096
10 0.118 0.138 0.091
16 0.110 0.128 0.085
25 0.105 0.120 0.083 0.102 0.116 0.080
35 0.100 0.114 0.082 0.097 0.110 0.080
50 0.098 0.110 0.080 0.092 0.103 0.078
70 0.091 0.103 0.076 0.088 0.099 0.077
95 0.088 0.101 0.076 0.085 0.097 0.074
120 0.086 0.096 0.075 0.082 0.093 0.072
150 0.085 0.094 0.074 0.082 0.091 0.072
185 0.084 0.092 0.074 0.082 0.090 0.072
240 0.082 0.090 0.073 0.079 0.086 0.072
300 0.080 0.088 0.073 0.078 0.085 0.071
400 0.080 0.088 0.072 0.077 0.085 0.070
500 0.079 0.087 0.072 0.076 0.083 0.070
630 0.077 0.086 0.072 0.075 0.082
800 0.077 0.083 0.075 0.081
1000 0.076 0.082 0.068 0.081