Aerial Bunched Cable: 1.1KV grade Stranded & Compacted Aluminium Phase Conductor, Stranded Messenger Conductor with Aluminium Alloy, Phase Conductor is insulated with XLPE Compound, Messenger is either insulated or bare with lighting Conductor of 16 mm’. Referred Specification IS:14255 (1995) upto the latest amendment.
Aerial Bunched Cables are suitable for:
- Power-theft prone areas
• Replacement of bare conductors in rural, forest, hilly, and congested localities
• Areas where reliability and voltage stability are critical
• Locations where underground cabling is uneconomical specially, in hilly terrains
Configuration: Single Phase or Three Phase systems with or without Neutral Conductor and Street Light line.
Conductor :
The phase conductor and neutral/street lighting conductors is of H2 or H4 grade aluminium complying with the requirements of IS 8130:1984 and conforms to flexibility class 2 of IS 8130:1984. The size of the street lighting conductor is16 mm2.
Messenger (Neutral Conductor or otherwise) :
The conductor is heat treated aluminium- magnesium-silicon alloy wire conforming to IS 398 (Part 4):1979. It is either stranded circular or compacted circular type and has minimum 7 strands with smooth surface.
Insulation :
The conductor is insulated with crosslinked polyethylene applied by extrusion. The insulation so applied fits closely on the conductor and it is possible to remove without damaging the conductor. The color of insulation is black, offering UV protection
Core Identification :
The phase conductors is provided with one, two or three ‘ridges’ and outer neutral insulated conductor, if provided, has four ‘ridges’ for quick identification. The street lighting conductor and messenger conductor (if insulated) does not have any identification mark.
Assembly (Laying up) :
Insulated conductors are twisted around the messenger conductor without fillers. Maximum lay length does not exceed 35 times the diameter of the insulated phase conductor. The direction of lay is right hand.
- Safer system due to fully insulated phase conductors
- Reduced faults from wind, trees, and bird contact
- High insulation resistance and negligible leakage current
- Low transmission losses
- Suitable for multiple circuits on the same support
- Easy maintenance and lower installation cost
- Prevention of power theft
- Longer transformer life due to reduced interruptions
- More economical than underground cables
