ASTM B701/B701M-06
(Specification)Standard Specification for Concentric-Lay-Stranded Self-Damping Aluminum Conductors, Steel Reinforced (ACSR/SD)
Standard Specification for Concentric-Lay-Stranded Self-Damping Aluminum Conductors, Steel Reinforced (ACSR/SD)
ABSTRACT
This specification covers concentric-lay-stranded self-damping aluminum conductors, steel-reinforced, and its component wires for use as overhead electrical conductors. The tensile strength and elongation requirements of the round and trapezoidal wires shall be the same except for the shape and diameter tolerance. Joints shall not be made in the finished steel wires. The lay factor and direction are specified. The strength and electrical resistance of a complete conductor are calculated. Tests for mechanical and electrical properties of aluminum and steel core wires shall be made before stranding. Gap dimensions shall be measured during fabrication of the conductor.
SCOPE
1.1 This specification covers concentric-lay-stranded self-damping aluminum conductor, steel-reinforced (ACSR/SD), and its component wires for use as overhead electrical conductors (Explanatory Note 1 and 2).
1.2 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, 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.
1.2.1 For density, resistivity, and temperature, the values stated in SI units are to be regarded as standard.Note 1
ACSR/SD is designed to control aeolian vibration by integral damping. The conductors consist of a central core of a round steel wire or wires surrounded by two layers of trapezoidal aluminum 1350-H19 wires or two layers of trapezoidal aluminum 1350-H19 wires and one layer of round aluminum 1350-H19 wires (Fig. 1). The trapezoidal-wire layers are separated from each other and from the steel core by two small annular gaps that provide the conductors self-damping characteristics. The round aluminum wires are in tight layer contact between themselves and the underlying trapezoidal wire layer. 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 (Table 1 and Table 2).Note 2
The aluminum and temper designations conform to ANSI Standard H 35.1. Aluminum 1350 corresponds to UNS A91350 in accordance with Practice E 527.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
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Designation: B701/B701M −06
StandardSpecification for
Concentric-Lay-Stranded Self-Damping Aluminum
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Conductors, Steel Reinforced (ACSR/SD)
This standard is issued under the fixed designation B701/B701M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2.1 The following documents of the issue in effect on date
1.1 This specification covers concentric-lay-stranded self-
of material purchase form a part of this specification to the
damping aluminum conductor, steel-reinforced (ACSR/SD),
extent referenced herein.
and its component wires for use as overhead electrical conduc-
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tors (Explanatory Notes 1 and 2).
2.2 ASTM Standards:
B230/B230M Specification for Aluminum 1350–H19 Wire
1.2 The values stated in inch-pound or SI units are to be
for Electrical Purposes
regarded separately as standard. Each system shall be used
B232/B232M Specification for Concentric-Lay-Stranded
independently of the other. Combining values from the two
Aluminum Conductors, Coated-Steel Reinforced (ACSR)
systems may result in non-conformance with the specification.
B263 Test Method for Determination of Cross-Sectional
For conductor sizes designated byAWG or kcmil, the require-
Area of Stranded Conductors
ments in SI units have been numerically converted from
B341/B341M Specification for Aluminum-Coated (Alumi-
correspondingvaluesstatedorderivedininch-poundunits.For
nized) Steel Core Wire for Aluminum Conductors, Steel
conductor sizes designated by SI units only, the requirements
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Reinforced (ACSR/AZ) (Withdrawn 2007)
are stated or derived in SI units.
B354 Terminology Relating to Uninsulated Metallic Electri-
1.2.1 For density, resistivity, and temperature, the values
cal Conductors
stated in SI units are to be regarded as standard.
B498/B498M Specification for Zinc-Coated (Galvanized)
Steel Core Wire for Use in Overhead Electrical Conduc-
NOTE 1—ACSR/SD is designed to control aeolian vibration by integral
tors
damping. The conductors consist of a central core of a round steel wire or
B502 Specification for Aluminum-Clad Steel Core Wire for
wires surrounded by two layers of trapezoidal aluminum 1350-H19 wires
or two layers of trapezoidal aluminum 1350-H19 wires and one layer of Use in Overhead Electrical Aluminum Conductors
round aluminum 1350-H19 wires (Fig. 1). The trapezoidal-wire layers are
B549 Specification for Concentric-Lay-Stranded Aluminum
separated from each other and from the steel core by two small annular
Conductors, Aluminum-Clad Steel Reinforced for Use in
gaps that provide the conductors self-damping characteristics. The round
Overhead Electrical Conductors
aluminum wires are in tight layer contact between themselves and the
B606 Specification for High-Strength Zinc-Coated (Galva-
underlying trapezoidal wire layer. Different strandings of the same size of
conductor are identified by type, which is the approximate ratio of steel nized) Steel Core Wire for Aluminum and Aluminum-
area to aluminum area, expressed in percent (Table 1 and Table 2).
Alloy Conductors, Steel Reinforced
NOTE 2—The aluminum and temper designations conform to ANSI
B802/B802M Specification for Zinc–5 % Aluminum-
Standard H 35.1. Aluminum 1350 corresponds to UNS A91350 in
Mischmetal Alloy-Coated Steel Core Wire for Aluminum
accordance with Practice E527.
Conductors, Steel Reinforced (ACSR)
1.3 This standard does not purport to address all of the
B803 Specification for High-Strength Zinc–5 %Aluminum-
safety concerns, if any, associated with its use. It is the
Mischmetal Alloy-Coated Steel Core Wire for Use in
responsibility of the user of this standard to establish appro-
Overhead Electrical Conductors
priate safety and health practices and determine the applica-
E29 Practice for Using Significant Digits in Test Data to
bility of regulatory limitations prior to use.
Determine Conformance with Specifications
1 2
This specification is under the jurisdiction of ASTM Committee B01 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Conductors of Light Metals. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved March 1, 2006. Published March 2006. Originally the ASTM website.
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approved in 1981. Last previous edition approved in 2000 as B701/B701M– 00. The last approved version of this historical standard is referenced on
DOI: 10.1520/B0701_B0701M-06. www.astm.org.
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