ASTM B231/B231M-04
(Specification)Standard Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors
Standard Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors
ABSTRACT
This specification covers aluminum 1350-H19, 1350-H16 or -H26, 1350-H14 or -H24, and 1350-H142 or -H242, bare concentric-lay-stranded conductors constructed with a straight round central wire surrounded by one or more layers of helically layered wires. Conductors are classified as Class AA for bare conductors usually used in overhead lines; Class A for conductors to be covered with weather resistant materials, and for bare conductors where greater flexibility than is afforded by Class AA is required; Class B for conductors to be insulated with various materials such as rubber, paper, varnished cloth, and so forth, and for the conductors indicated under Class A where greater flexibility is required; and Classes C and D for conductors where greater flexibility is required than is provided by Class B conductors. Aluminum wire employed in Classes AA and A conductors shall be 1350-H19, unless otherwise specified. The temper of conductors of Classes B, C and D shall be designated. The direction of lay of the outer layer shall be right-hand for Classes AA and A and left-hand for other classes. The various classes of concentric-lay-stranded conductors shall conform to the required areas of cross section, numbers, and diameters of wires. The rated strength of 1350-H19 conductors shall be taken as the percent of the sum of the strengths of the component wires, calculated using the nominal wire diameters and the specified minimum average tensile strength given in Specification B 230/B 230M for 1350-H19 wire.
SCOPE
1.1 This specification covers aluminum 1350-H19 (extra hard), 1350-H16 or -H26 (3/4 hard), 1350-H14 or -H24 (1/2 hard), and 1350-H142 or -H242 (1/2 hard), bare concentric-lay-stranded conductors constructed with a straight round central wire surrounded by one or more layers of helically layed wires. The conductors are for general use for electrical purposes (Explanatory and Note 0).
1.2 The values stated in inch-pound or SI units are to be regarded separately as standard. The values in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.2.1 For density, resistivity and temperature, the values stated in SI units are to be regarded as standard.Note 2
Prior to 1975, aluminum 1350 was designated as EC aluminum.Note 3
The aluminum and temper designations conform to ANSI Standard H35.1/H35.1M. Aluminum 1350 corresponds to Unified Numbering System A91350 in accordance with Practice E 527.Note 4
Sealed conductors that are intended to prevent longitudinal water propagation and are further covered/insulated are also permitted within the guidelines of this specification.
General Information
Relations
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: B231/B231M – 04
Standard Specification for
1
Concentric-Lay-Stranded Aluminum 1350 Conductors
This standard is issued under the fixed designation B231/B231M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope B263 Test Method for Determination of Cross-Sectional
Area of Stranded Conductors
1.1 This specification covers aluminum 1350-H19 (extra
3 1 B354 Terminology Relating to Uninsulated Metallic Elec-
hard), 1350-H16 or -H26 ( ⁄4 hard), 1350-H14 or -H24 ( ⁄2
trical Conductors
1
hard), and 1350-H142 or -H242 ( ⁄2 hard), bare concentric-lay-
B609/B609M Specification for Aluminum 1350 Round
stranded conductors constructed with a straight round central
Wire, Annealed and Intermediate Tempers, for Electrical
wiresurroundedbyoneormorelayersofhelicallylayedwires.
Purposes
The conductors are for general use for electrical purposes
B682 Specification for Metric Sizes of Electrical Conduc-
(Explanatory Note 1 and Note 2).
tors
1.2 The values stated in inch-pound or SI units are to be
E29 Practice for Using Significant Digits in Test Data to
regarded separately as standard.The values in each system are
Determine Conformance with Specifications
not exact equivalents; therefore, each system shall be used
E527 Practice for Numbering Metals and Alloys in the
independently of the other. Combining values from the two
Unified Numbering System (UNS)
systems may result in nonconformance with the specification.
3
2.3 ANSI Documents:
1.2.1 For density, resistivity and temperature, the values
ANSI H35.1 American National Standard Alloy and Tem-
stated in SI units are to be regarded as standard.
per Designation System for Aluminum
NOTE 1—Prior to 1975, aluminum 1350 was designated as EC alumi-
ANSI H35.1M American National Standard Alloy and
num.
Temper Designation Systems for Aluminum [Metric]
NOTE 2—The aluminum and temper designations conform to ANSI
4
2.4 NIST Document:
Standard H35.1/H35.1M. Aluminum 1350 corresponds to Unified Num-
NBS Handbook 100—Copper Wire Tables
bering System A91350 in accordance with Practice E527.
5
2.5 Aluminum Association Document:
NOTE 3—Sealed conductors that are intended to prevent longitudinal
water propagation and are further covered/insulated are also permitted
Publication 50, Code Words for OverheadAluminum Elec-
within the guidelines of this specification.
trical Conductors
2. Referenced Documents
3. Classification
2.1 The following documents of the issue in effect on date
3.1 For the purpose of this specification, conductors are
of material purchase form a part of this specification to the
classified as follows (Explanatory Note 1 and Note 2):
extent referenced herein:
3.1.1 Class AA—For bare conductors usually used in over-
2
2.2 ASTM Standards:
head lines.
B193 Test Method for Resistivity of Electrical Conductor
3.1.2 Class A—For conductors to be covered with weather-
Materials
resistant materials, and for bare conductors where greater
B230/B230M Specification for Aluminum 1350−H19 Wire
flexibilitythanisaffordedbyClassAAisrequired.Conductors
for Electrical Purposes
intendedforfurtherfabricationintotreewireortobeinsulated
and laid helically with or around aluminum orACSR messen-
1 gers, shall be regarded as Class A conductors with respect to
This specification is under the jurisdiction of ASTM Committee B01 on
direction of lay only (see 7.4).
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on
Conductors of Light Metals.
Current edition approved April 1, 2004. Published May 2004. Originally
3
approved in 1948. Last previous edition approved in 1999 as B231/B231M–99. Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
DOI: 10.1520/B0231_B0231M-04. 4th Floor, New York, NY 10036.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from National Technical Information Service (NTIS), U.S. Depart-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM ment of Commerce, 5285 Port Royal Rd., Springfield, VA 22161.
5
Standards volume information, refer to the standard’s Document Summary page on Available from the Aluminum Association, Inc., 900 19th Street, NW, Suite
the ASTM website. 300, Washington, DC 20006.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
B231/B231M – 04
3.1.3 Class B—For conductors to be insulated with various 3.1.4 Classes C and D—For conductors where grea
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.