Specifications

Complete Conductor:
ACSS is a composite concentric-laystranded
cable. The steel strands form the
central core of the cable around which is
stranded one or more layers of aluminum
1350-O wires. ACSS conductors are
manufactured in accordance with the
requirements of the latest applicable issue
of ASTM specification B856. The “O” temper
of the aluminum, a fully annealed or soft
temper, causes most or all of the
mechanical load on ACSS to be carried
by the steel. The steel core may consist of 7,
19, 37 or more wires. Class A zinc coating is
usually adequate for ordinary environments.

Features and Benefits:
ACSS conductors are similar to conventional
ACSR with some very important additional
advantages. ACSS can operate continuously
at high temperatures (200°C) without
damage; it sags less under emergency
electrical loadings than ACSR; it is
self-damping if prestretched during
installation; and its final sags are not
affected by long time creep of the aluminum.

Applications:
Aluminum Conductor, Steel-Supported
(ACSS) are used for overhead distribution
and transmission lines. They are especially
useful in reconductoring applications
requiring increased current with existing
tensions and clearances; new line
applications where structures can be
economized due to reduced sag; new
line applications requiring high emergency
loadings; lines where aeolian vibration

is a problem.

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