The reinforcement of conductors, such as ACSR, ACSS, and AACSR, to withstand mechanical forces is usually achieved through the integration of galvanized steel wires. Galvanization involves the application of a protective coating onto bare steel wires to prevent rusting and oxidation. As stipulated by the ASTM (American Society for Testing and Materials) standard, the use of galvanized steel wires is a requisite in the construction of bare overhead conductors.
Technical Specifications:
The reinforcement of conductors, such as ACSR, ACSS, and AACSR, to withstand mechanical forces is usually achieved through the integration of galvanized steel wires. Galvanization involves the application of a protective coating onto bare steel wires to prevent rusting and oxidation. As stipulated by the ASTM (American Society for Testing and Materials) standard, the use of galvanized steel wires is a requisite in the construction of bare overhead conductors. These galvanized wires are categorized into three classes, namely A, B, and C, based on the density of the coating on the wire's surface. Class A, characterized by the most common coating density, is frequently employed.
In compliance with recognized industry standards such as ASTM, BSEN (British Standards for Electrotechnical Products), DIN (Deutsches Institut für Normung - German Institute for Standardization), and IEC (International Electrotechnical Commission), the physical, chemical, and mechanical properties of galvanized steel wires are rigorously assessed. This meticulous evaluation ensures that the wires adhere to predefined quality benchmarks.
Galvanized steel wires have become the most common type of wire used in steel-reinforced overhead conductors due to their suitable performance, low cost, and ease of production. These wires, with their high tensile strength and appropriate flexibility, not only withstand heavy loads caused by the conductor's weight and environmental conditions but also facilitate easier installation and operation of transmission networks. The use of modern technologies in the galvanization process, including continuous methods and precise control of coating thickness, ensures the quality and uniformity of the zinc coating and increases corrosion resistance in various weather conditions. Rigorous inspections and quality control tests on the mechanical and chemical properties of these wires, in accordance with national and international standards, guarantee the reliable performance and long lifespan of overhead conductors in transmission and distribution networks.
The use of galvanized steel wires in overhead conductors not only increases mechanical strength but also enhances the durability and lifespan of these conductors. These wires perform exceptionally well, particularly in harsh weather conditions and corrosive environments, reducing the need for maintenance and lowering the long-term costs of power transmission systems. Ongoing research and advancements in coating technologies have further improved the properties of steel cores, leading to broader applications of these conductors in power transmission projects worldwide.