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What is aluminum clad steel core aluminum stranded wire? What are the advantages?
Release time:
2022-10-21
What is aluminum clad steel core aluminum stranded wire? What are the advantages? Aluminum-clad steel core aluminum stranded wire is made of aluminum wire and steel wire, which is suitable for overhead transmission lines. The inside is a steel "core", and the outside is an aluminum wire winding steel core; the steel core mainly plays a reinforcing role, and the aluminum stranded wire mainly plays a role in transmitting electric energy
What is aluminum clad steel core aluminum stranded wire? What are the advantages?
Aluminum-clad steel core aluminum stranded wire is made of aluminum wire and steel wire, which is suitable for overhead transmission lines. The inside is a steel "core", and the outside is an aluminum wire winding steel core; the steel core mainly plays a reinforcing role, and the aluminum stranded wire mainly plays a role in transmitting electric energy; it is a kind of stranded single-layer or multi-layer aluminum outside the galvanized steel core wire Reinforced conductor. It is mainly used in the power and transmission line industry. Steel strand is a steel product composed of multiple steel wires. The surface of carbon steel can be coated with zinc coating, zinc aluminum alloy coating, aluminum coating, copper coating, epoxy resin, etc. as required.
Aluminum clad steel core aluminum strand is divided into prestressed steel strand, unbonded steel strand, galvanized steel strand and so on. Different steel strands have different performance characteristics. Ordinary steel strand is galvanized steel strand and prestressed steel strand. The diameter of ordinary prestressed steel strand is 9.53 mm-17.8mm, and there are a few steel strands with larger diameter. The number of wires in each prestressed steel strand is generally 7, but there are also 2, 3 and 19 wires. The steel wire may have a metallic or non-metallic anticorrosive coating. The unbonded strands are coated with anti-corrosion grease or paraffin wax and then coated with HDPE.
Aluminum-clad steel-core aluminum stranded wire Uses: Aluminum-clad steel-core aluminum stranded wire is commonly used in load-bearing cables, pull wires, reinforced cores, etc. It can also be used as ground wires for overhead power transmission, blocking cables on both sides of highways or structural cables in building structures. The commonly used prestressed steel strands in prestressed steel strands are uncoated low relaxation prestressed steel strands and galvanized steel strands, which are commonly used in bridges, construction, water conservancy, energy and geotechnical engineering. Unbonded prestressed steel strand is commonly used in floor slab, foundation engineering, etc.
Related models of aluminum-clad steel core aluminum stranded wire: ACSR models are divided into JL/G1A JL/G1B JL/G2A JL/G2B JL/G3A, where G1A or G1B are ordinary strength steel wires. G2A or G2B refers to high strength steel wire. G3A refers to ultra-high strength steel wire. Model difference: Take JL/G1A-240/30 ACSR as an example. National standard (GB/T1179-2008) in the current JL/G1A-240/30 said;
The national standard (GB/T1179-1983) is represented by LGJ-240/30.
The main application of aluminum-clad steel core aluminum stranded wire: for high-voltage transmission lines, due to the limited line path, it is impossible to set up multiple lines on one path. People have proposed a method of using one path, a group of iron towers and suspending multiple lines, that is, one line is equivalent to setting up multiple lines. For 500KV transmission lines, China mostly adopts the method of suspending four wires, which is called the method of erecting towers at the same time.
Related advantages: ACSR has the characteristics of simple structure, convenient installation and maintenance, low line cost, large transmission capacity, conducive to laying under special geographical conditions such as crossing rivers and valleys, good conductivity, sufficient mechanical strength, large tensile strength, and telescopic tower spacing. Therefore, it is widely used in various voltage levels of overhead transmission and distribution lines.
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