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Specifications
ABC wire1.aerial cable at rated voltage 0.6/1kv
2.aerial cable bear 90 degree
1. INTRODUCTION of ABC wire
| Aerial Bunched Cables (ABC) is a very novel concept for Over Head Power distribution. When compared to the conventional bare conductor over head distribution system. ABC provides higher safety and reliability, lower power losses and ultimate system economy by reducing installation, maintenance and operative cost. This system is ideal for rural distribution and specially attractive for installation in difficult terrains such as hilly areas, forest areas, coastal areas etc. Aerial Bunched Cables is also considered to be the best choice for power distribution congested urban areas with narrow lanes and by – lanes. In developing urban complex, Aerial Bunched Cables is the better choice because of flexibility for rerouting as demanded by changes in urban development plan. |
2. CONSTRUCTION OF ABC wire
XLPE/HDPE insulated power conductors of Aluminium (Neutral conductor and street lighting conductor if and when necessary) are laid together (twisted) around a high tensile standard and galvanized steel (Aluminium Alloy may be used) insulated or bare messenger wire to form the Aerial Bunched Cable. This assembly is directly strung on to distribution pole/towers by means of standard hardware available in the market but care shall be taken to render the messenger wire completely insulated from Earthing at any point of distribution in case of HT ABC. |
3. MATERIALS of ABC wire
|
Aluminium conductors conform to IS:8130(Class-II) Standard high tensile galvanized steel messenger wire conforms to IS:398 (Part – 2). Alternatively Aluminum Alloy messenger wire conforms to IS:398 (Part – 4) XLPE and HDPE insulation of power conductors specify IS:7098 (Part – I & II) and IS:6474 respectively. Since, the tension from the current carrying conductor is totally removed by introduction of messenger wire the operating temperature of the conductor is 90.C as against 75.C of the bare conductor of the same size. |
4. ADVANTAGES about ABC wire
In comparison to bare overhead power distribution lines, ABC has very high reliability in maintaining services because power and neutral conductors are insulated with the best dielectric medium, resulting in the following advantages: |
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