Important factors you need to consider when choose the conductors of overhead lines
Aluminum conductors have an edge over copper conductors considering combined factors of cost, conductivity,tensile strength, weight etc. Aluminum conductors have replaced copper conductors in overhead power lines. Because their lower cost and lower weight. Following are four common types of overhead conductors. They are used in overhead transmission and distribution, to carry power from generating stations to the end users. Generally, every types of conductors are stranded form in order to increase the flexibility.
. AAC : All Aluminum Conductor
. AAAC : All Aluminum Alloy Conductor
. ACSR : Aluminum Conductor, Steel Reinforced
. ACAR : Aluminum Conductor, Alloy Reinforced
ACSR Standards and Approvals
ASTM B-230 Aluminum 1350-H19 wire for electrical purpose
ASTM B-232 Concentric laid Aluminum conductors
ASTM B-498 Zinc galvanized steel wire for electrical purpose
The solid central steel core is walled by one or more concentric strands of Aluminum alloy 1350 layers. Zinc coating protects the wire from corrosion.
AAC Standards and Approvals
ASTM B-230 Aluminum 1350-H19 wire
ASTM B-231 concentric lay stranded 1350 Aluminum conductors
1350 Aluminum series are helically wrapped round the central wire, whereby each layer has six strands more than the previous underlying layer.
AAAC Standards and Approvals
ASTM B-398 Aluminum alloy 6201-T81 conductors
ASTM B-399 concentric lay stranded 6201-T81
Bare Aluminum alloyed conductors of 6201 series are helically wrapped round the central wire.
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