Est. 1973
The Indian government has set very high targets for the power sector in the 13th five-year plan, besides trying to achieve the target set for the 12th five-year plan. Consequently, the transmission network will have to match the installed power generation capacity. But while there has been an increase in demand for Electrical Power Generation & Transmission, there exist a few hindrances, which include:
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High cost to install new Power lines
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Difficulty in acquiring Tower sites
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Right of way (ROW)
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Time involved in constructing new Power lines
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Provision for future contingencies
Est. 1973
AAA Conductor
Used as bare overhead conductor for primary and secondary distribution. Designed utilizing a high-strength aluminum-alloy to achieve a high strength-to-weight ratio; affords good sag characteristics. Aluminum-alloy 6201-T81 gives AAAC higher resistance to corrosion than ACSR. These conductors are designed to get better strength to weight ratio and offer improved electrical properties, excellent sag-tension characteristics, and superior corrosion resistance when compared with ACSR. As compared to a conventional ACSR conductor, the lighter weight, comparable strength & current carrying capacity, lower electrical losses,and superior corrosion resistance have given AAAC a wide acceptance in the distribution and medium & high voltage transmission lines. Being lighter, alloy conductors can sometimes be used to advantage in place of the more conventional ACSR; Having lower breaking loads than the later, their use becomes particularly favorable when ice and wind loadings are low.
Features
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High Strength to weight ratio
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Better sag characteristics
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Improved electrical properties
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Excellent resistance to corrosion
Construction
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Aluminum-alloy 6201-T81 wires, concentrically stranded.
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AAA conductor are made out from aluminum-magnesium-silicon alloy of high electrical conductivity (min 53% IACS) containing
magnesium (0.6-0.9%) & silicon (0.5-0.9%) to give it better mechanical properties after treatment.
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AAA conductors are made out of aluminum alloy 6201.
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AAA conductor has a better corrosion resistance and better strength to weight ratio and improved electrical conductivity than
ACSR conductor on an equal diameter basis.
