ASTM B857-01

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

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 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.
1.2.1 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). 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.

General Information

• Status: Historical
• Publication Date: 09-Apr-2002
• ICS: 29.060.10 - Wires
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.07 - Conductors of Light Metals

Relations

• Replaces: ASTM B857-95 - Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)
• Effective Date: 10-Apr-2002
• Replaced By: ASTM B857-01a - Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)
• Effective Date: 10-Apr-2002
• Referred By: ASTM B1006-17 - Standard Specification for Electrical Overhead Conductor Code Word Names
• Effective Date: 10-Apr-2002
• Referred By: ASTM B856-22 - Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated Steel Supported (ACSS)
• Effective Date: 10-Apr-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: B 857 – 01
Standard Specification for
Shaped Wire Compact Concentric-Lay-Stranded Aluminum
1
Conductors, Coated-Steel Supported (ACSS/TW)
This standard is issued under the fixed designation B 857; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope B 232 Specification for Concentric-Lay-Stranded Alumi-
2
num Conductors, Coated Steel Reinforced (ACSR)
1.1 This specification covers shaped wire compact
B 263 Test Method for Determination of Cross-Sectional
concentric-lay-stranded aluminum conductors, steel supported
2
Area of Stranded Conductors
(ACSS/TW) for use as overhead electrical conductors (see
B 341 Specification for Aluminum-Coated (Aluminized)
Explanatory Note 1).
Steel Core Wire for Aluminum Conductors, Steel Rein-
1.2 The values stated in inch-pound or SI units are to be
2
forced (ACSR/AZ)
regarded separately as standard. Each system shall be used
B 354 Terminology Relating to Uninsulated Metallic Elec-
independently of the other. Combining values from the two
2
trical Conductors
systems may result in non-conformance with the specification.
B 498 Specification for Zinc-Coated (Galvanized) Steel
For conductor sizes designated by AWG or kcmil sizes, the
Core Wire for Aluminum Conductors, Steel Reinforced
requirements in SI units are numerically converted from the
2
(ACSR)
corresponding requirements in inch-pound units. For conductor
B 500 Specification for Metallic Coated Stranded Steel
sizes designation by AWG or kcmil, the requirements in SI
Core for Aluminum Conductors, Steel Reinforced
units have been numerically converted from corresponding
2
(ACSR)
values stated or derived in inch-pound units. For conductor
B 502 Specification for Aluminum-Clad Steel Core Wire for
sizes designated by SI units only, the requirements are stated or
2
Aluminum Conductors, Aluminum-Clad Steel Reinforced
derived in SI units.
B 549 Specification for Concentric-Lay-Stranded Alumi-
1.2.1 For density, resistivity, and temperature, the values
num Conductors, Aluminum-Clad Steel Reinforced
stated in SI units are to be regarded as standard.
2
(ACSR/AW)
1.3 ACSS/TW is designed to increase the aluminum area for
B 606 Specification for High-Strength Zinc-Coated (Galva-
a given diameter of conductor by the use of trapezoidal shaped
nized) Steel Core Wire for Aluminum and Aluminum-
wires (TW). The conductors consist of a central core of round
2
Alloy Conductors, Steel Reinforced
steel wire(s) surrounded by two or more layers of trapezoidal
B 609 Specification for Aluminum 1350 Round Wire, An-
aluminum 1350-0 wires. Different strandings of the same size
2
nealed and Intermediate Temper, for Electrical Purposes
of conductor are identified by type, which is the approximate
B 779 Specification for Shaped Wire Compact Concentric-
ratio of steel area to aluminum area expressed in percent (see
Lay-Stranded Aluminum Conductors, Steel-Reinforced
Table 1, Table 2, and Table 3). For the purpose of this
2
(ACSR/TW)
specification, the sizes listed in Table 1 and Table 2 are
B 802 Specification for Zinc-5 % Aluminum-Mischmetal
tabulated on the basis of the finished conductor having an area
Alloy-Coated Steel Core Wire for Aluminum Conductors,
or outside diameter equal to that of specified sizes of standard
2
Steel-Reinforced (ACSR)
ACSR, ACSS, and ACSR/TW so as to facilitate conductor
B 803 Specification for High-Strength Zinc-5 %
selection.
Aluminum-Mischmetal Alloy-Coated Steel Core Wire for
2. Referenced Documents Aluminum and Aluminum-Alloy Conductors, Steel-
2
Reinforced
2.1 The following documents of the issue in effect on date
E 29 Practice for Using Significant Digits in Test Data to
of material purchase form part of this specification to the extent
3
Determine Conformance with Specifications
referenced herein:
4
E 527 Practice for Numbering Metals and Alloys (UNS)
2.2 ASTM Standards:
2.3 Other Standards:
1
This specification is under the jurisdiction of ASTM Committee B01 on
2
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 Annual Book of ASTM Standards, Vol 02.03.
3
Conductors of Light Metals. Annual Book of ASTM Standards, Vol 14.02.
4
Current edition approved Mar. 10, 2001. Published May 2001. Annual Book of ASTM Standards, Vol 01.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B 857
TABLE 1 Construction Requirements for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated Steel
A
Supported
NOTE 1—Sized to have area equal to ACSR or ACSS, Clas
...