ASTM Overhead Aluminium Conductor Steel Supported Acss for Transmission Line

1. Standard
ASTM B856 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated Steel Supported (ACSS);

2. Construction
ACSS, a non-homogenous conductor, is a concentric-lay stranded conductor made from round aluminum 1350-O wires and round, coated steel core wire(s). Steel wires are coated with Class A coating of zinc – 5% aluminum mischmetal alloy. Other Classes of coatings are also available for additional protection from corrosion. Standard, High, Extra and Ultra High Strength steel are also available.

3. Features
ACSS conductors are preferred over ACSR conductors for specific transmission line applications:
With zinc – 5% aluminum mischmetal alloy coating on steel wires, ACSS conductors can be operated up to 250 ° C.
ACSS conductors carry more current than ACSR conductors due to: Minimum average conductivity of 63% IACS for 1350-O aluminum wires vs. An average conductivity of 61.2% for 1350-H19 aluminum wires in ACSR.
ACSS conductors can be operated up to 250 ° C vs. The maximum operating temperature for an ACSR conductor does not exceed 100 ° C.
ACSS conductors are prone to resist the effects of aeolian vibration due to very little or no mechanical load on the annealed aluminum wires.
Long term creep is not a factor when designing with ACSS conductors.

4. Applications
ACSS conductors are useful for: Reconductoring lines: Increase ampacity with existing tensions and clearances.
New lines: Optimize structures due to low sag. Also, provide higher emergency loading capability.
Lines: Where aeolian vibration is an issue.

5. Bare Conductor Types
(1) all aluminum conductor (AAC)
(2) all aluminum alloy conductor(AAAC)
(3) aluminum conductor steel reinforced (ACSR)
(4) anti-corrosion type ACSR
(5) aluminum conductor aluminum clad steel reinforced(ACSR/AW)
(6) rear earth aluminum conductor steel reinforced(ACSR/RE)
(7) aluminum conductor aluminum alloy reinforced(ACAR)
(8) aluminium conductors steel supported (ACSS)

6. Huatong Cable Inc.
(1), More than 30 years experience.
(2), 100, 000m² Factory, 200 staffs, annual output 100, 000 metic tons.
(3), Sound Quality Control
– Material inspection;
– manufacturing inspection;
– Finished products inspection;
– Inspection before delivery.
– Third party inspection.
– Inspection of storage at port of departure.
(4), ISO Certificated.
(5), Plenty of material and lobor gurantee the delivery prompt and price competitive.
(6), 24/7 service.