ASTM B549-2013 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors Aluminum-Clad Steel Reinforced for Use in Overhead Electrical Conductors《天花板电导线用包铝钢芯加强的同心绞捻铝导线.pdf
《ASTM B549-2013 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors Aluminum-Clad Steel Reinforced for Use in Overhead Electrical Conductors《天花板电导线用包铝钢芯加强的同心绞捻铝导线.pdf》由会员分享,可在线阅读,更多相关《ASTM B549-2013 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors Aluminum-Clad Steel Reinforced for Use in Overhead Electrical Conductors《天花板电导线用包铝钢芯加强的同心绞捻铝导线.pdf(9页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: B549 10B549 13Standard Specification forConcentric-Lay-Stranded Aluminum Conductors, Aluminum-Clad Steel Reinforced for Use in Overhead ElectricalConductors1This standard is issued under the fixed designation B549; the number immediately following the designation indicates the year ofor
2、iginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers concentric-lay-stranded conductors
3、made from round aluminum 1350-H19 (extra hard) aluminumwires and round aluminum-clad steel core wires for use as overhead electrical conductors (Explanatory Note 1 and Note 2).1.2 The SI values of density and resistivity are to be regarded as standard. For all other properties the inch-pound units a
4、reregarded as standard and the SI units may be approximate.2. Referenced Documents2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extentreferenced herein.2.2 ASTM Standards:2B230/B230M Specification for Aluminum 1350H19 Wire fo
5、r Electrical PurposesB263 Test Method for Determination of Cross-Sectional Area of Stranded ConductorsB354 Terminology Relating to Uninsulated Metallic Electrical ConductorsB500/B500M Specification for Metallic Coated or Aluminum Clad Stranded Steel Core for Use in Overhead ElectricalConductorsB502
6、Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum ConductorsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications2.3 ANSI Standards:3ANSI C 42.100 Dictionary of Electrical and Electronics TermsANSI H 35.1 American Na
7、tional Standard Alloy and Temper Designation Systems for Aluminum2.4 Other Standard:NBS Handbook 100Copper Wire Tables of the National Bureau of Standards43. Terminology3.1 Description of Terms Specific to This Standard3.1.1 ACSR covered by this specification has one type of steel core wire which is
8、 designated by the following abbreviation(Explanatory Note 2):3.1.1.1 ACSR/AWACSR using aluminum-clad steel wire (Explanatory Note 2).4. Classification4.1 For the purpose of this specification, conductors are classified as follows (Explanatory Note 1 and Note 2):4.1.1 Class AAFor bare conductors usu
9、ally used in overhead lines. These conductors are used as follows:1 This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on Conductorsof Light Metals.Current edition approved April 1, 2010April 1, 2013. Pu
10、blished May 2010May 2013. Originally approved in 1971. Last previous edition approved in 20042010 asB549 04.B549 10. DOI: 10.1520/B0549-10.10.1520/B0549-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM
11、 Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.4 Available from National Technical Information Service (NTIS), U.S. Departm
12、ent of Commerce, Alexandria, Virginia5301 Shawnee Rd., Alexandria, VA 22312,http:/www.ntis.gov.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. Becauseit may not be technically pos
13、sible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, W
14、est Conshohocken, PA 19428-2959. United States14.1.1.1 Conductors used for regular overhead line construction and4.1.1.2 Conductors having a high ratio of mechanical strength to current-carrying capacity used for overhead ground wires andfor extra-long span construction.4.1.2 Class AFor conductors t
15、o be covered with weather-resistant (weatherproof) materials.5. Ordering Information5.1 Orders for material under this specification shall include the following information:5.1.1 Quantity of each size, stranding, and class,5.1.2 Conductor size: circular mil area or AWG of aluminum wires (Section 9 a
16、nd Table 1),5.1.3 Number of wires, aluminum, and aluminum-clad steel (Table 1),5.1.4 Direction of lay of outer layer of aluminum wires if other than right-hand (see 8.2),5.1.5 Special tests, if required (see 15.3 and 15.5),5.1.6 Package size (see 17.1 and Explanatory Note 5),5.1.7 Special package ma
17、rking, if required (Section 17),5.1.8 Lagging, if required (see 17.3), and5.1.9 Place of inspection (Section 16).6. Requirement for Wires6.1 Before stranding, the aluminum wires used shall meet all the requirements of Specification B230/B230M.6.2 Before stranding, the aluminum-clad steel core wires
18、used shall meet all the requirements of Specification B502.7. Joints7.1 Electric-butt welds, cold-pressure welds, or electric-butt, cold-upset welds in the finished individual aluminum wirescomposing the conductor may be made during the stranding process. No weld shall occur within 50 ft (15 m) of a
19、 weld in the samewire or in any other wire of the completed conductor (Explanatory Note 1).7.2 There shall be no joints of any kind made in the finished aluminum-clad steel wires.8. Lay8.1 The length of lay of the various layers of aluminum wires in a conductor shall conform to Table 2 (Explanatory
20、Note 5).The length of lay of the various layers of aluminum-clad steel wires shall conform to Specification B500/B500M. The length oflay of the varous layers of mixed aluminum and aluminum-clad steel wires (AWAC) shall conform to Table 2.8.2 The direction of lay of the outside layer of wires shall b
21、e right hand unless otherwise specified in the purchase order. Thedirection of lay of the aluminum and aluminum-clad steel wires shall be reversed in successive layers.9. Construction9.1 The number and diameter of aluminum and steel wires and the areas of cross section of aluminum wires shall confor
22、m tothe requirements prescribed in Table 1 and Fig. 1.9.2 Where compressed stranding is required in order to insulate the conductor properly, one or more aluminum layers of anystranded conductor consisting of 7 wires or more may be slightly compressed, thereby reducing the outside diameter of thecon
23、ductor by not more than 3 %, provided that the area of cross section after compressing is in accordance with Section 13.10. Rated Strength of Conductor10.1 The rated strength of a completed conductor shall be taken as the aggregate strength of the aluminum and aluminum-cladsteel components, calculat
24、ed as follows. The strength contribution of the aluminum wires shall be taken as the percentage,according to the number of layers of aluminum wires, indicated in Table 3, of the sum of the strengths of the 1350-H19 wires,calculated from their specified nominal wire diameter and the appropriate speci
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