ASTM B500 B500M-2009 Standard Specification for Metallic Coated Stranded Steel Core for Use in Overhead Electrical Conductors《钢加固铝导线(ACSR)用金属涂覆钢绞线芯的标准规范》.pdf
《ASTM B500 B500M-2009 Standard Specification for Metallic Coated Stranded Steel Core for Use in Overhead Electrical Conductors《钢加固铝导线(ACSR)用金属涂覆钢绞线芯的标准规范》.pdf》由会员分享,可在线阅读,更多相关《ASTM B500 B500M-2009 Standard Specification for Metallic Coated Stranded Steel Core for Use in Overhead Electrical Conductors《钢加固铝导线(ACSR)用金属涂覆钢绞线芯的标准规范》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: B 500/B 500M 09Standard Specification forMetallic Coated Stranded Steel Core for Use in OverheadElectrical Conductors1This standard is issued under the fixed designation B 500/B 500M; the number immediately following the designation indicates the yearof original adoption or, in the case
2、 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. Scope*1.1 This specification covers 7-wire, 19-wire, 37-wire, and61-wire zinc-coated (galvanized), zi
3、nc-5 % aluminum-mischmetal alloy-coated stranded steel core intended for use inoverhead electrical conductors.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem sha
4、ll be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.2. Referenced Documents2.1 ASTM Standards:2B 498/B 498M Specification for Zinc-Coated (Galvanized)Steel Core Wire for Use in Overhead Electrical ConductorsB 606 Specification fo
5、r High-Strength Zinc-Coated (Galva-nized) Steel Core Wire for Aluminum and Aluminum-Alloy Conductors, Steel ReinforcedB 802/B 802M Specification for Zinc5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for AluminumConductors, Steel Reinforced (ACSR)B 803 Specification for High-Strength Zinc5 %Al
6、uminum-Mischmetal Alloy-Coated Steel Core Wire forUse in Overhead Electrical ConductorsE83 Practice for Verification and Classification of Exten-someter Systems3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 lotunless otherwise specified in the contract ororder, a lot shall co
7、nsist of all coils or reels of strand of thesame diameter and unit lengths submitted for inspection at thesame time.3.1.2 production lotall of the wire spools loaded into astranding machine that are used to produce a completed strandcable.4. Ordering Information4.1 Orders for material under this spe
8、cification shall includethe following information:4.1.1 Length of each construction,4.1.2 Constructional description of stranded core (for ex-ample, 7 3 0.0943 in. or 19 3 0.0977 in.) (8.1 and 8.2),4.1.3 The multiple length of stranded core and the totalnumber of multiple lengths per reel, if allowe
9、d (8.3 and Section15),4.1.4 Strength and coating type (Section 8),4.1.5 Direction of lay of outer layer (Section 7),4.1.6 Packaging (Section 15), and4.1.7 Place of inspection (Section 13).5. Material5.1 The coated steel wire used in the production of thestranded core shall, prior to stranding, meet
10、all of the require-ments of the appropriate specification that follows:5.1.1 Specification B 498/B 498M,5.1.2 Specification B 606,5.1.3 Specification B 802/B 802M, and5.1.4 Specification B 803/B 803M.6. Joints6.1 There shall be no joints of any kind made in the finishedzinc-coated, zinc-5 % aluminum
11、-mischmetal alloy-coated steelwires.7. Stranding7.1 The lay length of the 6-wire layer of 7 and 19-wirestranded core shall be not less than 16 or more than 26 timesthe outside diameter of the 6-wire layer. (Outside diameter isthree times nominal wire diameter.)7.2 The lay length of the 12-wire layer
12、 of a 19-wire strandedcore shall be not less than 14 or more than 22 times the outsidediameter of the 12-wire layer. (Outside diameter is five timesnominal wire diameter.)1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of S
13、ubcommittee B01.05 onConductors of Ferrous Metals.Current edition approved March 15, 2009. Published April 2009. Originallyapproved in 1969. Last previous edition approved in 2002 as B 500/B 500M 98(2002).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer S
14、ervice at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 1
15、9428-2959, United States.7.3 The lay length of the 18-wire layer of a 37-wire strandedcore shall be not less than 14 or more than 20 times the outsidediameter of the 18-wire layer. (Outside diameter is seven timesnominal wire diameter.)7.4 The lay length of the 24-wire layer of a 61-wire strandedcor
16、e shall be not less than 14 or more than 18 times the outsidediameter of the 24-wire layer. (Outside diameter is nine timesnominal wire diameter.)7.5 The steel wires shall be so stranded that when thestranded core is cut the individual wires can be readilyregrouped and then held in place by one hand
17、.7.6 For construction containing 19 or more wires, thedirection of lay will alternate with each layer.7.7 The direction of lay of the outer layer shall be asspecified by the purchaser at the time of placing the order.8. Construction and Recommended Standard Stranded-Core Lengths8.1 Overhead Electric
18、al Conductors may be constructedusing steel core wire with any one of six types of protectivecoatings and associated strength grades. The acceptable corewires are produced to ASTM Specifications shown in Section5 of this standard.8.2 The number and diameters of the steel wires shallconform to the re
19、quirements in respective ASTM ConductorStandards.8.3 Recommended standard unit-stranded-core multiplelengths are given in respective ASTM Conductor Standards.9. Length Tolerance9.1 All lengths of stranded core shall be furnished to alength tolerance of 62%.10. Tensile Properties10.1 The rated ultima
20、te strength or strength at 1 % exten-sion of stranded core for overhead electrical conductors shallbe taken as that percentage according to the number of wires,indicated below, of the sum of the strengths of the steel wires,calculated from their specified nominal wire diameter and theappropriate spe
21、cified minimum stress at 1 % extension orultimate strength given in Specifications B 498/B 498M,B 606, B 802/B 802M, or B 803:72wire strand96 % of sum of components192wire strand93 % of sum of components372wire strand91 % of sum of components612wire strand90 % of sum of components10.2 Stranded steel
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