AERIAL BUNCHED CABLES is also called AERIAL BUNDLED CONDUCTORS or is simply referred to as ABC Cables. ABC is a very novel concept for Overhead Distribution System. When compared to the conventional Bare Conductor Overhead Distribution System. ABC provides higher safety and reliability, lower power losses and ultimate system economy by reducing installation, maintenance and operative cost. Aerial Bunched Cables, 1100 volt Grade, are used for distributing power to individual consumers by utility service providers like Electricity Distributing Authorities. The cable is kept supported on poles. The line is tapped intermittently from any required position which enables to be used in urban as well as rural areas alike.

Aerial Bunched Cables for working voltage grade upto 1100V (IS: 14255-1995)

Designation Insulation Thickness(mm) Nom Overall Diameter(mm) Approx Weight Kg/Km Approx Current Carrying Capacity(Amps)
HDPE Insulated XLPE Insulated
3 x 16 + 25 1.2 19 270 52 67
3 x 25 + 25 1.2 22 370 68 100
3 x 35 + 25 1.2 24 450 85 125
3 x 50 + 35 1.5 32 630 103 150
3 x 70 + 50 1.5 35 875 125 190
3 x 95 + 70 1.5 38 1160 150 236

LITMUS LV ABC detailed specification

Characteristic Units Nominal Cross-sectional area of conductor, mm2
16 25 35 50 70 95 120 150
Numbers of cores 2/4 2/3/4 2/3/4 2/3/4 4 2/4 4 4
Form of conductors strain dedco mpacted circular
Number of wires in conductor 7 7 7 7 19* 19* 19* 19*
Diameter of conductors • min Mm 4.5 5.8 6.8 8.0 9.6 11.3 12.8 14.1
• max Mm 4.8 6.1 7.2 8.4 10.1 11.9 13.5 14.9
Maximum d. c. resistance of conductor in the cable at 200 C W/km 1.91 1.20 0.868 0.641 0.443 0.320 0.253 0.206
Minimum breaking load of conductor (calculation) based on a minimum conductor  tensile stress of 140 Mpa) kN 2.2 2.2 4.9 7.0 9.8 13.3 16.8 21.0
Minimum average thickness of insulation excluding ribs mm 1.3 1.3 1.3 1.5 1.5 1.7 1.7 1.7
Minimum thickness of insulation at any point mm 1.07 1.07 1.07 1.25 1.25 1.43 1.43 1.43
Maximum thickness of insulation at any point excluding ribs mm 1.91 1.9 1.9 2.1 2.1 2.3 2.3 2.3s
Maximum diameter of core
(excluding ribs)
mm 7.9 9.2 10.3 11.9 13.6 15.9 17.5 18.9