ASTM B701/B701M-22

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 Notes 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).  
FIG. 1 Illustrations of Typical ACSR/SD Strandings
Note 2: The aluminum and temper designations conform to ANSI Standard H 35.1. Aluminum 1350 corresponds to UNS A91350 in accordance with Practice E527.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 30-Nov-2022
• ICS: 29.240.20 - Power transmission and distribution lines
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.07 - Conductors of Light Metals

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B701/B701M −22
Standard Specification for
Concentric-Lay-Stranded Self-Damping Aluminum
1
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 ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
1.1 This specification covers concentric-lay-stranded self-
mendations issued by the World Trade Organization Technical
damping aluminum conductor, steel-reinforced (ACSR/SD),
Barriers to Trade (TBT) Committee.
and its component wires for use as overhead electrical conduc-
tors (Explanatory Notes 1 and 2).
2. Referenced Documents
1.2 The values stated in inch-pound or SI units are to be
2.1 The following documents of the issue in effect on date
regarded separately as standard. Each system shall be used
of material purchase form a part of this specification to the
independently of the other. Combining values from the two
extent referenced herein.
systems may result in non-conformance with the specification.
2
2.2 ASTM Standards:
For conductor sizes designated byAWG or kcmil, the require-
B230/B230M Specification for Aluminum 1350–H19 Wire
ments in SI units have been numerically converted from
for Electrical Purposes
correspondingvaluesstatedorderivedininch-poundunits.For
B232/B232M Specification for Concentric-Lay-Stranded
conductor sizes designated by SI units only, the requirements
Aluminum Conductors, Coated-Steel Reinforced (ACSR)
are stated or derived in SI units.
B263/B263M Test Method for Determination of Cross-
1.2.1 For density, resistivity, and temperature, the values
Sectional Area of Stranded Conductors
stated in SI units are to be regarded as standard.
B354 Terminology Relating to Uninsulated Metallic Electri-
NOTE 1—ACSR/SD is designed to control aeolian vibration by integral
cal Conductors
damping. The conductors consist of a central core of a round steel wire or
B498/B498M Specification for Zinc-Coated (Galvanized)
wires surrounded by two layers of trapezoidal aluminum 1350-H19 wires
or two layers of trapezoidal aluminum 1350-H19 wires and one layer of Steel Core Wire for Use in Overhead Electrical Conduc-
round aluminum 1350-H19 wires (Fig. 1). The trapezoidal-wire layers are
tors
separated from each other and from the steel core by two small annular
B500/B500M Specification for Metallic Coated or Alumi-
gaps that provide the conductors self-damping characteristics. The round
num Clad Stranded Steel Core for Use in Overhead
aluminum wires are in tight layer contact between themselves and the
Electrical Conductors
underlying trapezoidal wire layer. Different strandings of the same size of
conductor are identified by type, which is the approximate ratio of steel B502/B502M Specification for Aluminum-Clad Steel Core
area to aluminum area, expressed in percent (Table 1 and Table 2).
Wire for Use in Overhead Electrical Aluminum Conduc-
NOTE 2—The aluminum and temper designations conform to ANSI
tors
Standard H 35.1. Aluminum 1350 corresponds to UNS A91350 in
B549 Specification for Concentric-Lay-Stranded Aluminum
accordance with Practice E527.
Conductors, Aluminum-Clad Steel Reinforced for Use in
1.3 This standard does not purport to address all of the
Overhead Electrical Conductors
safety concerns, if any, associated with its use. It is the
B606/B606M Specification for High-Strength Zinc-Coated
responsibility of the user of this standard to establish appro-
(Galvanized) Steel Core Wire for Aluminum and
priate safety, health, and environmental practices and deter-
Aluminum-Alloy Conductors, Steel Reinforced
mine the applicability of regulatory limitations prior to use.
B802/B802M Specification for Zinc–5 % Aluminum-
1.4 This international standard was developed in accor-
Mischmetal Alloy-Coated Steel Core Wire for Aluminum
dance with internationally recognized principles on standard-
Conductors, Steel Reinforced (ACSR)
B803/B803M Specification for High-Strength Zinc–5 %
1
This specification is under the jurisdiction of ASTM Committee B01 on
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on
2
Conductors of Light Metals. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved . Published December 2022. Originally approved in contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
1981. Last previous edition approved in 2018 as B701/B701M– 13 (2018). DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/B07
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B701/B701M − 13 (Reapproved 2018) B701/B701M − 22
Standard Specification for
Concentric-Lay-Stranded Self-Damping Aluminum
1
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
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 Notes 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 E527.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extent
referenced herein.
1
This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on Conductors
of Light Metals.
Current edition approved March 1, 2018. Published March 2018December 2022. Originally approved in 1981. Last previous edition approved in 20132018 as
B701/B701M– 13. – 13 (2018). DOI: 10.1520/B0701_B0701M-13R18.10.1520/B0701_B0701M-22.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B701/B701M − 22
FIG. 1 Illustrations of Typical ACSR/SD Strandings
2
2.2 ASTM Standards:
B230/B230M Specification for Aluminum 1350–H19 Wire for Electrical Purposes
B232/B232M Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Reinforced (ACSR)
B263B263/B263M Test Method for Determination of Cross-Sectional Area of Stranded Conductors
B354 Terminology Relating to Uninsulated Metallic Electrical Conductors
B498/B498M Specification for Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors
B500/B500M Specification for Metallic Coated or Aluminum Clad Stranded Steel Core for Use in Overhead Electrical
Conductors
B502B502/B502M Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum Conductors
B549 Specification for Concentric-Lay-Stranded Aluminum Conductors, Aluminum
...