Aerial Bunched Cables

HMT Aerial Bunched Cables (ABC) is a very novel concept for Over Head power distribution. HMT Cables are being designed, manufactured & tested conforming to IS: 14255, IS: 7098 (P-1) & other international specifications.
Applications
Aerial bunched cables can be conveniently used :

• In theft prone areas.
• As replacement of bare lines in Rural areas, in woods and in other localities & narrow streets where the space is limited.
• As replacement of bare lines where reliability of supply is of prime importance.
• As replacement of bare lines where high degree of stability of supply voltage is of importance.
• In hilly terrains where cost of erection of overhead lines or under ground cable becomes very high.
• As reinforcement of existing system without increasing voltage.
• For temporary supplies.

Advantages
In comparison of bare overhead distribution lines, ABC has very high reliability in maintaining services because power and neutral conductors are insulated with the best dielectric, resulting in the following advantages :
1) Less fault rate on account of good protection against line and ground fault by high winds or falling trees or birds especially in hilly areas & forests as encountered in Rural distribution networks.
2) High Insulation resistance to earth in all seasons and polluted atmospheres. Negligible leakage currents and low losses.
3) Multiple circuits of Power and Telephone Cables could be strung in the same set of poles or any ther supports like walls etc.
4) Better adaptability to run concurrently with existing over-head bare conductor system without any interference.
5) High capacitance and low inductance leading to low impedance of lines.
6) Lower voltage drop, higher current carrying capacities, vis-a-vis better Voltage Regulation.
7) Longer spans and longer distance lines are possible with better system stability.
8) Power distribution cables are much safer than bare Conductors.
9) It can be over hung in dense vegetation and forests.
10) Additional connections can be easily and quickly made with hot-line connectors.
11) Total lines costs are reduced.
12) Maintenance is very easy.
13) Very difficult to tap the AB cables, thus reducing theft which leads to lower distribution loses.