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ASTM B857-11e2

(Specification)

Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)

Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)

ABSTRACT
This specification covers shaped wire compact concentric-lay-stranded aluminum conductors, steel supported (ACSS/TW) for use as overhead electrical conductors. Electric-butt welds, cold-pressure welds, and electric-butt, cold upsed welds in the finished individual aluminum wires composing the conductor may be made during the stranding process. The electrical resistivity of the material shall meet the minimum resistivity specified. The rated strength of the completed conductor may be determined by mechanical tests. Mass and density of the conductors shall be determined.
SCOPE
1.1 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).  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.2.1 Exceptions—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 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.  
1.3 ACSS/TW is designed to increase the aluminum area for a given diameter of conductor by the use of trapezoidal shaped wires (TW), or to reduce the diameter for a given area of aluminum. 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.TABLE 1 Construction Requirements for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated Steel SupportedANote 1—Sized to have area equal aluminum cross-sectional area to an ACSR or ACSS, Class AA conductor.    
ACSS/TW
Conductor Size  
Code WordB  
Size and Stranding
of ACSS
with Equal Aluminum
Cross-Sectional Area  
Aluminum
Stranding  
Steel Core
Stranding  
Nominal Mass
ACSS/TW  
ACSS/TW Conductor Rated Strength
(by type of steel core wire)  
Nominal
Outside
Diameter    
kcmilC  
Type  
kcmil  
Stranding  
Number
of
Aluminum
Wires  
Number
of
Layers  
Number
of
Wires  
Individual Strand Wire
Diameter,
in.  
GAX Core
lb/1000 ft  
†GA2 / MA2 KIPS  
†GA3 / MA3 KIPS  
GA4 / MA4 KIPS  
GA5 / MA5 KIPS  
AW2 KIPS  
AW3
KIPS  
in.  
266.8  
16  
Partridge/ACSS/TW  
266.8  
26/7  
18  
2  
7  
0.0788  
349  
8.90  
9.70  
10.8  
11.4  
8.40  
8.90  
0.58  
336.4  
23  
Oriole/ACSS/TW  
336.4  
30/7  
17  
2  
7  
0.1059  
526  
14.8  
16.3  
18.2  
19.1  
14.2  
14.8  
0.69  
477.0  
13  
Flicker/ACSS/TW  
477.0  
24/7  
18  
2  
7  
0.0940  
612  
13.0  
14.2  
15.7  
16.4  
12.5  
13.0  
0.78  
477.0  
16  
Hawk/ACSS/TW  
477.0  
26/7  
18  
2  
7  
0.1053  
655  
15.6  
17.1  
18.9  
19.8  
14.9  
15.6  
0.79  
477.0  
23  
Hen/ACSS/TW  
477.0  
30/7  
17  
2  
7  
0.1261  
746  
21.0  
22.7  
25.4  
26.7  
20.1  
20.5  
0.83  
556.5  
13  
Parakeet/ACSS/TW  
556.5  
24/7  
18  
2  
7  
0.1015  
714  
15.2  
16.6  
18.3  
19.1  
14.6  
15.2  
0.84  
556.5  
16  
Dove/ACSS/TW  
556.5  
26/7  
20  
2  
7  
0.1138  
...

General Information

Status
Historical
Publication Date
31-Mar-2011
ICS
29.060.10 - Wires
Technical Committee
B01 - Electrical Conductors
Drafting Committee
B01.07 - Conductors of Light Metals
Current Stage
Ref Project

Relations

Replaces
ASTM B857-11e1 - Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)
Effective Date
01-Apr-2011
Replaced By
ASTM B857-14 - Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)
Effective Date
01-Apr-2014
Referred By
ASTM B856-22 - Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated Steel Supported (ACSS)
Effective Date
01-Apr-2011
Referred By
ASTM B1006-17 - Standard Specification for Electrical Overhead Conductor Code Word Names
Effective Date
01-Apr-2011

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ASTM B857-11e2 - Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)ASTM B857-11e2 - Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)
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ASTM B857-11e2 - Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)
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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
´2
Designation: B857 −11
StandardSpecification for
Shaped Wire Compact Concentric-Lay-Stranded Aluminum
1
Conductors, Coated-Steel Supported (ACSS/TW)
This standard is issued under the fixed designation B857; 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
ε NOTE—Sections 8.2.9 and 8.2.10 were editorially updated in February 2013.
2
ε NOTE—Table 1, Table 2, and section 9.3 were editorially updated in February 2013.
1. Scope 2. Referenced Documents
2.1 The following documents of the issue in effect on date
1.1 This specification covers shaped wire compact
ofmaterialpurchaseformpartofthisspecificationtotheextent
concentric-lay-stranded aluminum conductors, steel supported
referenced herein:
(ACSS/TW) for use as overhead electrical conductors (see
2
Explanatory Note 1). 2.2 ASTM Standards:
B263 Test Method for Determination of Cross-Sectional
1.2 The values stated in inch-pound units are to be regarded
Area of Stranded Conductors
as standard. The values given in parentheses are mathematical
B354 Terminology Relating to Uninsulated Metallic Electri-
conversions to SI units that are provided for information only
cal Conductors
and are not considered standard.
B498/B498M Specification for Zinc-Coated (Galvanized)
1.2.1 Exceptions—For conductor sizes designated by AWG Steel Core Wire for Use in Overhead Electrical Conduc-
tors
or kcmil sizes, the requirements in SI units are numerically
B500/B500M Specification for Metallic Coated or Alumi-
converted from the corresponding requirements in inch-pound
num Clad Stranded Steel Core for Use in Overhead
units. For conductor sizes designated by SI units only, the
Electrical Conductors
requirements are stated or derived in SI units. For density,
B502 Specification for Aluminum-Clad Steel Core Wire for
resistivity, and temperature, the values stated in SI units are to
Use in Overhead Electrical Aluminum Conductors
be regarded as standard.
B549 Specification for Concentric-Lay-Stranded Aluminum
1.3 ACSS/TWisdesignedtoincreasethealuminumareafor
Conductors, Aluminum-Clad Steel Reinforced for Use in
a given diameter of conductor by the use of trapezoidal shaped
Overhead Electrical Conductors
wires (TW), or to reduce the diameter for a given area of B606 Specification for High-Strength Zinc-Coated (Galva-
aluminum. The conductors consist of a central core of round nized) Steel Core Wire for Aluminum and Aluminum-
Alloy Conductors, Steel Reinforced
steel wire(s) surrounded by two or more layers of trapezoidal
B609/B609M Specification for Aluminum 1350 Round
aluminum 1350-0 wires. Different strandings of the same size
Wire, Annealed and Intermediate Tempers, for Electrical
of conductor are identified by type, which is the approximate
Purposes
ratio of steel area to aluminum area expressed in percent (see
B802/B802M Specification for Zinc–5 % Aluminum-
Table 1, Table 2, and Table 3). For the purpose of this
Mischmetal Alloy-Coated Steel Core Wire for Aluminum
specification, the sizes listed in Table 1 and Table 2 are
Conductors, Steel Reinforced (ACSR)
tabulated on the basis of the finished conductor having an area
B803 Specification for High-Strength Zinc–5 %Aluminum-
or outside diameter equal to that of specified sizes of standard
Mischmetal Alloy-Coated Steel Core Wire for Use in
ACSR, ACSS, and ACSR/TW so as to facilitate conductor
Overhead Electrical Conductors
selection.
B856 Specification for Concentric-Lay-Stranded Aluminum
Conductors, Coated Steel Supported (ACSS)
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 April 1, 2011. Published July 2011. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1995. Last previous edition approved in 2009 as B857 – 09. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/B0857-11E02. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
´2
B857 − 11
2
A
TABLE 1 Construction Requirements for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated Steel Supported
NOTE 1—Sized to have area equal aluminum cross-sectional area to an ACSR or ACSS, Class AA conductor.
Size and Stranding
Nominal
ACSS/TW of ACSS Aluminum Steel Core Nominal Mass ACSS/TW Conductor Rated Strength
Outside
C
...

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1.1 This specification covers round wire concentric-lay-stranded aluminum conductors, steel supported (ACSS) for use as overhead electrical conductors (see Explanatory Note 1).  
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 nonconformance 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.  
1.2.1 For density, resistivity and temperature, the values stated in SI units are to be regarded as standard.  
1.3 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.

  • Technical specification
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    English language
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  • Technical specification
    8 pages
    English language
    sale 15% off