ACSR Overhead Line Conductor Aluminum Reinforced Electrical Cable
ACSR Overhead Line Conductor Aluminum Reinforced Electrical Cable image
ACSR Overhead Line Conductor Aluminum Reinforced Electrical Cable
ACSR Overhead Line Conductor are a type of high-strength conductor specifically designed for overhead power transmission applications. They are composite conductors, meaning they combine two distinct materials to achieve the best of both worlds:
Aluminium Strands: The outer layer of the cable is comprised of numerous strands of a specific type of aluminium – EC grade (alloy 1350). This aluminium offers excellent electrical conductivity, allowing for efficient current flow.
Steel Core: At the center of the ACSR cable lies a core made of either a single galvanised steel wire or multiple stranded galvanized steel wires. The galvanization process adds a protective zinc coating to the steel, enhancing its corrosion resistance. This core provides the ACSR cable with the crucial mechanical strength it needs to:
Support its own weight, especially for long spans between power pylons.
Withstand harsh weather conditions, such as strong winds, ice buildup, and even extreme temperatures.
Service Performance:
(1). The permissible long-time operating temperature for aerial conductor is 70℃.
(2). Under the circumstance that rare climate is occurring and ice coverage rate low in heavy ice area, the biggest stress of cable at the lowest point of the sag should not exceed 60% of the short-time destructive power.
(3). When connecting conductors, the conductor beside the connecting tube cant be prominent. Otherwise, the force on the operating conductors will be unbalanced. After connectors are install, the connecting tube should be painted by moisture-proof varnish in order to protect it from corrosion.
(4). Under installation, the arc downing stress of all the conductors should be the same. With in the permissible distance of crossing buildings or dropping to the ground, the stress can be 10-15% higher than regular stress.
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