954 MCM Canvasback ACSS Aluminum Conductor Steel Supported

954 MCM Canvasback ACSS Aluminum Conductor Steel Supported

Applications:

ACSS is used for overhead distribution and transmission lines. It is designed to operate continuously at elevated temperatures up to 250°C without loss of strength; it sags less than a comparable ACSR under electrical loadings; it is self-damping if prestretched during installation; and its final sags are not affected by long term creep of aluminum. The advantages make ACSS especially useful in reconductoring applications requiring increased current with existing tensions and clearances, new line applications where structures can be economized because of reduced conductor sag, new line applications requiring high emergency loadings, and lines where aeolian vibration is a problem.

Also Known As:

954 MCM ACSR/TW conductor, Trapezoidal aluminum conductor, Steel reinforced ACSR, Bare overhead conductor, 954 MCM Compact concentric-lay ACSR, 954 MCM ASTM B779 conductor. 954 MCM ACSS power transmission wire.

Standards:

•  B500 Metallic Coated Stranded Steel Core for Use in Overhead Electrical Conductors.
•  B609 Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes.
•  B802 Zinc-5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum Conductors, Steel Reinforced (ACSR).
•  B803 High-Strength Zinc-5% Aluminum Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead Electrical Conductors.
•  B856 Concentric-Lay-Stranded Aluminum Conductors, Coated Steel Supported (ACSS).
•  B958 Extra-High-Strength and Ultra-High-Strength Class A Zinc-5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead Electrical Conductors.

Construction:

• ACSS is a composite concentric-lay stranded conductor. Steel strands form the central core of the conductor with two or more layers of aluminum 1350-O wire stranded around it. The steel core carries most or all of the mechanical load of the conductor due to the “O” temper (fully annealed or soft) aluminum. 
• Steel core wires are protected from corrosion by a zinc-5% aluminum-mischmetal alloy coating. For aluminum-clad (AW) ACSS, please refer to the ACSS/AW catalog sheet. Corrosion protection should be selected to suit the environment to which the conductor will be exposed.

Specifications:

• Size : 954 MCM
• Stranding (AL/STL): 30/19
• Diameter Inches: Individual Wires Aluminum: 0.1783
• Diameter Inches: Individual Wires Steel: 0.1070
• Diameter Inches: Individual Wires Steel Core: 0.5350
• Diameter Inches: Cable OD: 1.248
• Weight lb/1000FT: Aluminum: 900.7
• Weight lb/1000FT: Steel: 579.4
• Weight lb/1000FT: Total: 1480.1
• Rated Strength (lbs.) Standard Strength: 41100
• Rated Strength (lbs) High Strength: 45400
• Rated Strength (lbs) HS285 Strength: 53100
• Resistance (OHMS/1000ft) DC at 20ºC: 0.0172
• Resistance OHMS/1000ft: AC at 75ºC: 0.0214
• Ampacity @ 200°C (AMPS): 1897