ASTM B778-97

Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors (AAC/TW)

STANDARD published on 10.10.1997

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The information about the standard:

Designation standards: ASTM B778-97
Note: WITHDRAWN
Publication date standards: 10.10.1997
SKU: NS-8085
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Annotation of standard text ASTM B778-97 :

Keywords:

Aluminum electrical conductors, Lay factor (electrical conductor wire), Rated strength (electrical conductor wire), Steel wire strand, shaped wire compact concentric-lay-stranded aluminum conductors, (AAC/TW), spec, ICS Number Code 29.240.20 (Power transmission and distribution lines)

Additional information

1. Scope

1.1 This specification covers shaped wire compact concentric-lay-stranded aluminum conductor (AAC/TW) and its component wires for use as overhead electrical conductors (Explanatory Notes 1 and 2).

1.2 The values stated in inch-pound units are to be regarded as the standard with the exception of temperature and resistivity. The SI equivalents of inch-pound units may be approximate.

Note 1-AAC/TW is designed to increase the aluminum area for a given diameter of conductor by the use of trapezoidally shaped wires (TW). The conductors consist of a central core of one round aluminum wire or a seven-strand compact round core surrounded by two or more layers of trapezoidal aluminum 1350-H19 wires. For the purposes of this specification, the sizes listed are tabulated on the basis of the finished conductor having an area equal to that of specific sizes of standard AAC (Table 1) or in fixed diameter increments (Table 2) so as to facilitate conductor selection. Note 2-The aluminum and temper designations conform to ANSI Standard H35.1. Aluminum 1350 corresponds to Unified Numbering System (UNS) A91350 in accordance with Practice E527.

2. Referenced Documents

B263-04	Standard Test Method for Determination of Cross-Sectional Area of Stranded Conductors
B230/B230M-22	Standard Specification for Aluminum 1350–H19 Wire for Electrical Purposes
Aluminum Association Publication 50	Code Words for Overhead Aluminum Electrical Conductors Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600, Arlington, VA 22209, http://www.aluminum.org.
NBS Handbook 100	-- Copper Wire Tables Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
ANSI H35.1	American National Standard Alloy and Temper Designation Systems for Aluminum Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
E527-23	Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
B354-23	Standard Terminology Relating to Uninsulated Metallic Electrical Conductors

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