1、Designation:B500/B500M12Standard Specification forMetallic Coated or Aluminum Clad Stranded Steel Core forUse in Overhead Electrical Conductors1This standard is issued under the fixed designation B500/B500M;the number immediately following the designation indicates the yearof original adoption or,in
2、 the case 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),zin
3、c-5%aluminum-mischmetal alloy-coated or aluminum clad stranded steel coreintended for use in overhead 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,eac
4、hsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.2.Referenced Documents2.1 ASTM Standards:2B498/B498M Specification for Zinc-Coated(Galvanized)Steel Core Wire for Use in Overhead Electrical Conduc-torsB957 Specificat
5、ion for Extra-High-Strength and Ultra-High-Strength Zinc-Coated(Galvanized)Steel Core Wire forOverhead Electrical ConductorsB958 Specification for Extra-High-Strength and Ultra-High-Strength Class A Zinc5%Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead ElectricalConductorsB606 S
6、pecification for High-Strength Zinc-Coated(Galva-nized)Steel Core Wire for Aluminum and Aluminum-Alloy Conductors,Steel ReinforcedB802/B802M Specification for Zinc5%Aluminum-Mischmetal Alloy-Coated Steel Core Wire for AluminumConductors,Steel Reinforced(ACSR)B803 Specification for High-Strength Zinc
7、5%Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use inOverhead Electrical ConductorsE83 Practice for Verification and Classification of Exten-someter SystemsB502 Specification for Aluminum-Clad Steel Core Wire forUse in Overhead Electrical Aluminum Conductors3.Terminology3.1 Definitions of Te
8、rms Specific to This Standard:3.1.1 lotunless otherwise specified in the contract ororder,a lot shall consist 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 a
9、re used to produce a completed strandcable.4.Ordering Information4.1 Orders for material under this specification shall includethe following information:4.1.1 Length of each construction,4.1.2 Constructional description of stranded core(forexample,7 0.0943 in.or 19 0.0977 in.)(8.1 and 8.2),4.1.3 The
10、 multiple length of stranded core and the totalnumber of multiple lengths per reel,if allowed(8.3 and Section15),4.1.4 Strength and coating type or aluminum clad(Section8),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.Material
11、5.1 The coated or aluminum clad steel wire used in theproduction of the stranded core shall,prior to stranding,meetall of the requirements of the appropriate specification thatfollows:5.1.1 Specification B498/B498M,5.1.2 Specification B606,5.1.3 Specification B802/B802M,and5.1.4 Specification B803.5
12、.1.5 Specification B957.5.1.6 Specification B958.1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.05 onConductors of Ferrous Metals.Current edition approved April 1,2012.Published May 2012.Originallyappro
13、ved in 1969.Last previous edition approved in 2010 as B500/B500M 10.DOI:10.1520/B0500_B0500M-12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Su
14、mmary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.1.7 Specification B502.6.Joints6.1 There shall be no joints of any kind made in the finishedz
15、inc-coated,zinc-5%aluminum-mischmetal alloy-coated oraluminum clad steel wires.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
16、.)7.2 The lay length of the 12-wire layer 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.)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 strandedcore shall be not
