Introduction:

1.1 KV Grade is used for distributing power to individual consumers by utility service providers such as electricity boards and electricity distributing authorities. The cables are suspended overhead using electrical poles. The cable can be tapped intermittently from any required position, enabling them to be used in urban as well as rural areas.

Features:

Ease of installation

The inductance in Aerial Bunched Cables is much less than in bare wire systems, because of the proximity of the phase conductors, making the voltage drop Iower per unit of length.

Trees require less trimming where lines run through wooded areas. Costs for repair and maintenance are less since there is no risk of damage due to fallen trees or accidental contact between conductors in high winds.

The poles can be used for additional power or telephone lines. Several feeders can be installed on the same pole.

Aerial Bunched cables can be attached to any kind of pole or wall and can safely be installed in narrow streets.

Aerial bunched cables are very versatile as they can be re-used in conjunction with temporary services, camps, construction sites, etc.

Additional branch connections can be easily and safely made my Iinesman using insulation piercing connectors and insulated tools.

Construction:

XLPE insulated power conductors of Aluminium (Neutral Conductor and street lighting conductors, if and when necessary) are laid together (twisted) around a high tensile stranded and galvanized steel (Aluminium Alloy may be used but sparingly) insulated messenger wire to form the Aerial Bunched Cable. The assembly is directly strung on to messenger wire completely insulated from earthing at any point of distribution in case of HT ABC.

The XLPE (Cross-linked Polyethylene) insulation is black and is stabilized against deterioration caused by exposure to direct sunlight and ultraviolet radiation.

Configuration:

Single Phase or Three Phase systems with or without Street Light line.

Conductor:

The phase of a lightning conductor: Electrical grade Aliminium of H2 or H4 grade as per is: 8130

Messenger Conductor: Aluminium Silica and Magnesium Alloy.

Insulation:

XLPE with Sioplas Technique.

Identification:

Ridges provided on the insulation of Phase Conductors: 1 ridge for the 1st phase, 2 ridges for the 2nd phase and 3 ridges for the3rd phase. The Neutral phase may have 4 ridges if required.

The construction has additional advantages:

• Cables are lighter in weight
• Easy to install
• It can be installed on poles, on walls, etc.
• Easy to make terminations and branch off joints on live wire as well
• Protection against power theft