JKLYJS/JKLVS bundled overhead insulated conductors are a type of low-voltage overhead insulated cable. They combine the advantages of power cable lines with the disadvantages of overhead lines. The overall line reconstruction cost is slightly lower than that of existing three-phase, four-wire overhead insulated lines, achieving both economical and practical goals. During the reconstruction process, bundled conductors do not occupy the line corridor. Their simple structure allows them to pass through narrow streets and alleys, eliminating the complex and intertwined lines of the original overhead lines. This reduces conflicts between trees and lines. When approaching trees, there is no need for extensive tree felling or pruning, allowing smaller spaces to meet requirements, effectively protecting urban greenery. Furthermore, the number and type of hardware used during the reconstruction process are significantly reduced, making construction and maintenance more convenient and improving worker efficiency.
The comprehensive benefits of bundled conductors are as follows:
1. Energy Savings: Bundled conductors reduce the cost of electricity by approximately 0.25 yuan per kW/h compared to traditional wires and cables, effectively reducing the burden on farmers.
2. Voltage Reduction: Theoretical calculations assume an 80% transformer load factor. After the retrofit, the voltage loss rate at the end of the bundled conductor line is below 5%, a two percentage point decrease from the previous 3%.
3. Reduced Project Costs: Compared to conventional retrofits, the use of bundled conductors reduces project costs by 13% for copper conductors and 16% for aluminum conductors.
4. Comparison with Twisted Insulated Wire: Due to their shorter effective length, bundled conductors not only save non-ferrous metal but also significantly reduce losses compared to the twisted insulated wire used in urban power grids.
5. Compared to conventional bare conductors, bundled conductors reduce reactance and increase susceptance, effectively improving the network's natural power factor.
6. Compared to steel-core aluminum stranded conductors, bundled conductors with two-core split conductors of the same cross-section offer a 19% higher current carrying capacity than conventional single-phase conductors, and four-core split conductors offer a 41% higher current carrying capacity. Ansheng Special Cable specializes in the production of overhead bundled conductors and has a large inventory.
