ASTM B 857 Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)
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ASTM B 857 Document Information:
Title
Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)
ASTM International
Publication Date:
Apr 10, 2002
Scope:
This specification covers shaped wire compact concentric-lay-stranded
aluminum conductors, steel
supported (ACSS/TW) for use as overhead electrical conductors (see
Explanatory Note 1).
The values stated in inch-pound or SI units are to be regarded
separately as standard. Each system
shall be used independently of the other. Combining values from the
two systems may result in
non-conformance with the specification. For conductor sizes designated
by AWG or kcmil sizes, the
requirements in SI units are numerically converted from the
corresponding requirements in
inch-pound units. For conductor sizes designation by AWG or kcmil, the
requirements in SI units
have been numerically converted from corresponding values stated or
derived in inch-pound units.
For conductor sizes designated by SI units only, the requirements are
stated or derived in SI
units.
For density, resistivity, and temperature, the values stated in SI
units are to be regarded as
standard.
ACSS/TW is designed to increase the aluminum area for a given diameter
of conductor by the use of
trapezoidal shaped wires (TW). The conductors consist of a central
core of round steel wire(s)
surrounded by two or more layers of trapezoidal aluminum 1350-0 wires.
Different strandings of the
same size of conductor are identified by type, which is the
approximate ratio of steel area to
aluminum area expressed in percent (see Table 1, Table 2, and Table
3). For the purpose of this
specification, the sizes listed in Table 1 and Table 2 are tabulated
on the basis of the finished
conductor having an area or outside diameter equal to that of
specified sizes of standard ACSR,
ACSS, and ACSR/TW so as to facilitate conductor selection.
Keywords:
- aluminum conductors
- concentric-lay stranded aluminum conductors
- electrical conductors
- electrical conductors
- aluminum
- steel-reinforced conductors
- steel-supported aluminum conductors
- stranded aluminum conductors
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