JKLY300mm2, the winning bidder of the State Grid Corporation of China for overhead insulated lines

Description :

　　JKLY-1KV-300 model, the winning bidder of the State Grid Corporation of China for overhead insulated lines

　　Advantages of overhead insulated lines;

　　Overhead insulated conductors have high and low voltage, with voltage levels of 1KV, 10KV, and 35KV for all aluminum and steel cores. For detailed specifications and prices, please call us for consultation

　　The use of insulated conductors instead of bare conductors for 10kV and below high-voltage insulated overhead lines is a new technology in the construction and renovation of urban distribution networks. It has a series of advantages of buried cables and can overcome many disadvantages of overhead bare wires. It can solve some problems encountered by conventional bare wires during operation and is much cheaper than buried cables. Therefore, there is a certain development prospect in the construction of urban distribution networks.

　　Compared to lines constructed with bare conductors, high-voltage insulated overhead lines have the following main advantages:

　　① Conducive to improving and enhancing the safety and reliability of the power distribution system, greatly reducing the risk of personal electric shock injury. Insulated wires can prevent phase to phase short circuits caused by external objects, reduce the number of power outages during pole closing operations, reduce maintenance workload, and improve the power supply utilization rate of the line;

　　② Beneficial for urban construction and greening work, reducing the amount of tree pruning along the route;

　　③ It can simplify the structure of line towers and even lay them along walls, saving line materials and beautifying urban streets;

　　④ Facilitating the penetration of high voltage into the load center to improve voltage quality and reduce energy loss;

　　⑤ Saved the space occupied by overhead lines, making it easier for overhead lines to pass through narrow passages. The line corridor has been reduced by half compared to overhead bare lines;

　　⑥ Save line energy loss, reduce voltage loss, and the line reactance is only one-third of that of ordinary bare wire lines;

　　⑦ Reduce wire corrosion, thereby improving the service life and distribution reliability of the line accordingly;

　　⑧ Reducing the gravity requirements of the line, decreasing the investment in matching parts, and lowering the labor intensity of workers during wire installation;

　　⑨ Reduced the insulation requirements for line support components and increased the number of circuits on the same pole; Due to the improvement of line technology, the maintenance workload has been reduced, the maintenance cycle has been extended, and the time of power outages caused by maintenance has been reduced.

　　The disadvantages are:

　　① The allowable current carrying capacity of high-voltage insulated overhead lines is smaller than that of bare wires, because after adding a plastic layer, the heat dissipation of the wires is poor. The shape of overhead insulated wires should be raised by one level compared to usual. If the original 70mm2 wire is used, it should be matched to 95mm2.

　　② The diameter of high-voltage insulated overhead lines is relatively large, and with the addition of plastic sheaths, the diameter is one grade larger than that of steel cored aluminum stranded wires with the same cross-section. Although insulated wires have many advantages, their unit cost is higher than bare wires, about twice as high for medium voltage lines and about 25% higher for low voltage lines. JKLY300mm2, the winning bidder of the State Grid Corporation of China for overhead insulated lines

　　Dazheng Electric Wire Co., Ltd. is one of the main production enterprises of wires, wires, cables, and optical cables in China. It is a modern enterprise engaged in the production, research and development, and sales of high-tech products such as wires, wires, cables, and optical cables. The company was established on May 16, 2007 and is located in Dazheng Industrial Park, Renqiu City, Hebei Province. It is situated in the center of Shijiazhuang, Beijing, and Tianjin, the provincial capital of Hebei Province, and is close to the beautiful North China pearl Baiyangdian, as well as the Daguang Expressway, Jinghu Expressway, Jinshi Expressway, 106 National Highway, Beijing Kowloon Railway, and Jinbao Highway running through the city, making transportation very convenient. The company covers an area of 13508 square meters, with a building area of about 8000 square meters and more than 200 employees, including 30 technical personnel. The registered capital is 105 million yuan, the fixed assets are 300 million yuan, and the annual production capacity is 900 million yuan. In 2016, the output value of aluminum products reached 120 million yuan. The company has six modern production workshops and more than 50 sets of production and inspection equipment. The production and testing equipment is advanced and complete, mainly including frame twisting machines, 1+1 cross-linking extruders, Shenma 630 tube twisting machines, 630 cage twisting machines, cold press welding machines, aluminum large pulling machines, tube twisting machines, extruders and other advanced production equipment such as DC bridges, metal tensile testing machines, electronic scales, wire winding and twisting testers, adhesion testers, etc. Testing equipment such as sexual experimental devices. Production: Overhead insulated conductors, steel cored aluminum alloy conductors, heat-resistant steel cored aluminum alloy stranded wires, steel cored aluminum stranded wires, aluminum clad steel cored aluminum stranded wires, OPGW conductor optical cables, OPPC composite phase line optical cables, steel stranded wires, aluminum clad steel stranded wires, cross-linked power cables, control cables and other products. Some products have a large inventory and can be shipped quickly.

　　Dazheng Electric Wire Co., Ltd. has been awarded multiple honorary titles such as provincial and municipal contract credit enterprises, consumer trustworthy units, and Hebei Province measurement qualified units for many years, thanks to advanced production equipment and exquisite technical processes, complete testing equipment and perfect testing methods, modern scientific management methods, and rigorous quality assurance systems. It has cooperated with state-owned enterprises such as China Petroleum Corporation, Hebei Construction Investment Group, State Grid Corporation of China, and Wind Power Investment Group, and has received high praise from customers for its excellent product quality and service. The development strategy of Dazheng Electric Line is to adhere to the development concept of "quality excellence, integrity pursuit forever", adhere to the development path of "strict quality, efficient management, keeping pace with the times, technological innovation, environmental protection and consumption reduction", improve scale efficiency, develop products, create the Dazheng Electric Line brand, serve China's power industry, and contribute to society!

　　Dazheng Wire Co., Ltd. is located in Dazheng Industrial Zone, Renqiu City. The company mainly produces steel core aluminum stranded wire, steel core aluminum alloy stranded wire, aluminum clad steel core heat-resistant aluminum alloy stranded wire, steel core high-strength heat-resistant aluminum alloy stranded wire, aluminum clad steel core aluminum stranded wire, aluminum clad steel stranded wire, aluminum alloy core frame insulated cable, overhead insulated wire 1-35kV, OPGW optical cable, OPPC optical cable, ADSS optical cable, steel stranded wire, aluminum stranded wire, with a total of more than 100 varieties and more than 3000 specifications. Located near Baiyangdian, the pearl of North China, the 106 National Highway, Beijing Kowloon Railway, and Jinbao Highway run through the city. It is 156km north of Beijing and 120km east of Tianjin, making transportation very convenient

　　Dazheng Electric Wire Co., Ltd. relies on advanced production equipment and exquisite technical processes With complete testing equipment and advanced testing technology, modern scientific management methods, and a rigorous quality assurance system, we have received high praise from customers for many years in a row.

　　Dazheng Electric Wire Co., Ltd. takes "meeting customer requirements and enhancing customer satisfaction" as its purpose and "quality is life, integrity is fundamental, and customers are God" as its business philosophy. It cultivates the market, improves product quality, and constantly pursues the perfection of products and services to meet the higher needs of customers.

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• The winning bidder of the State Grid Corporation of China for overhead insulated lines