Aerial Bunched Cable

APPLICATIONS
Aerial Bunched Cables are suitable for the following functions mentioned as under:

 In theft prone areas.

As replacement of bare lines in rural areas, in woods, other localities & narrow street where space is limited.

As replacement of bare lines where reliability of supply is of prime importance and where high degree of stability of supply voltage is of importance.

In hilly terrains where cost of erection of overhead lines of under ground cable becomes very high.
Where space is limited like those in densely populated area, dense forests.
As reinforcement of existing system without increasing voltage.
For temporary supplies.
   

ADVANTAGES
Aerial Bunched Cables Lines have very high reliability in maintaining services because conductors are insulated with the best dielectric. The benefits of using this line are:

Safest system because phase conductors are insulated, no risk of danger of accidental touching live conductor.

Less fault rage on account of good protection against line and ground fault by high winds or falling trees or bird especially in hilly areas & forests as encountered in rural distribution networks.

High insulation resistance to earth in all seasons and polluted atmospheres. Negligible leakage currents and low losses.

Multiple circuits of power and telephone cables could be strung in the same set of poles or any other supports like walls etc.

Better adaptability to “in concurrently with existing over-head bare conductor system without any interference.

High capacitance and low inductance leading to low impedance of lines.

Total lines costs are reduced and maintenance is very easy.

Insulation of conductors also helps in preventing corrosion of the conductor.

Cores being insulated, the chances of power thefts are eliminated.

These are cheaper than power cables.

Life of Transformers increased as the supply interruptions are minimized.
   

CABLE CROSS SECTION

 

TECHNICAL PARTICULARS (AS per IS: 14255 - 1995)

Phase Conductor

(Aluminium)

As per IS 8130 : 1984

Street Lighting Conductor

(Aluminium)

As per IS 8130 : 1984

Messenger Conductor

Aluminium Alloy

As per IS 398

(Part-4) : 1979
Nom. Area

Max. D.C. Conductor Resistance
 at 20°C

 Nom. Thickness of Insulation XLPE/PE Nom. Area

Max. D.C. Conductor Resistance
 at 20°C

 Nom. Thickness of Insulation XLPE/PE Nom. Area

Max. D.C. Conductor Resistance
 at 20°C

Min. Breaking Load
Sqmm Ohm/Km mm Sqmm Ohm/Km mm Sqmm Ohm/Km KN
16 1.910 1.2 16 1.91 1.2 25 1.380 7.0
25 1.200 1.2 16 1.91 1.2 25 1.380 7.0
35 0.868 1.2 16 1.91 1.2 25 1.380 7.0
50 0.641 1.5 16 1.91 1.2 35 0.986 9.8
70 0.443 1.5 16 1.91 1.2 50 0.689 14.0
95 0.320 1.5 16 1.91 1.2 70 0.492 19.7
120 0.253 1.5 16 1.91 1.2 95 0.357 26.5

COMPOSITION & DESIGNATION OF L.T. AERIAL BUNCHED CABLES

Designation

Complete Bunched Cable
Approx. Overall Dia
Approx. Total Mass
mm Kg/Km
3C x   16 mm2 + 25 mm2 + 16 mm2 20 320
3C x   25 mm2 + 25 mm2 + 16 mm2 23 410
3C x   35 mm2 + 25 mm2 + 16 mm2 25 500
3C x   50 mm2 + 35 mm2 + 16 mm2 30 690
3C x   70 mm2 + 50 mm2 + 16 mm2 34 915
3C x   95 mm2 + 70 mm2 + 16 mm2 39 1195
3C x 120 mm2 + 70 mm2 + 16 mm2 44 1485

NOTES

We can manufacture Aerial Bunched cable as per customer’s requirement meeting the National/International specifications.