1、Designation: B400/B400M 081Standard Specification forCompact Round Concentric-Lay-Stranded Aluminum 1350Conductors1This standard is issued under the fixed designation B400/B400M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the
2、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.1NOTEDesignation was corrected editorially in October 2013.1. Scope1.1 This specification covers aluminum 1350-H19 (extrah
3、ard), 1350-H16 or -H26 (n hard), 1350-H14 or -H24 (12hard) and 1350-H142 or -H242 (12 hard) bare compact-roundconcentric-lay-stranded conductors made from round or shapedwires for use as uninsulated electrical conductors or in coveredor insulated electrical conductors. These conductors shall becompo
4、sed of a central core surrounded by one or more roller ordie compacted layers of helically applied wires (ExplanatoryNote 1 and Note 2).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;
5、 therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.NOTE 1Prior to 1975, aluminum 1350 was designated as ECaluminum.NOTE 2The aluminum and temper designations conform to ANSIStandard H35.1. Aluminum 1350
6、 corresponds to Unified NumberingSystem A91350 in accordance with Practice E527.2. Referenced Documents2.1 ASTM Standards:2B230/B230M Specification for Aluminum 1350H19 Wirefor Electrical PurposesB231/B231M Specification for Concentric-Lay-StrandedAluminum 1350 ConductorsB263 Test Method for Determi
7、nation of Cross-SectionalArea of Stranded ConductorsB354 Terminology Relating to Uninsulated Metallic Electri-cal ConductorsB609/B609M Specification for Aluminum 1350 RoundWire, Annealed and Intermediate Tempers, for ElectricalPurposesE29 Practice for Using Significant Digits in Test Data toDetermin
8、e Conformance with SpecificationsE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)2.2 Other Documents:ANSI H35.1/H35.1(M) Alloy and Temper Designation Sys-tems for Aluminum3NBS Handbook 100-Copper Wire Tables, of the NationalBureau of Standards43. Classification3.1 F
9、or the purpose of this specification, conductors areclassified as follows:3.1.1 Class AAFor bare conductors usually used in over-head lines.3.1.2 Class AFor conductors to be covered with weather-resistant materials, and for bare conductors where greaterflexibility than is afforded by Class AA is req
10、uired. Conductorsindicated for further fabrication into tree wire or to be insulatedand laid helically with or around aluminum or ACSRmessengers, shall be regarded as Class A conductors withrespect to direction of lay only (see 6.3).3.1.3 Class BFor conductors to be insulated with variousmaterials s
11、uch as rubber, paper, varnished cloth, and so forth,and for the conductors indicated under Class A where greaterflexibility is required.4. Ordering Information4.1 Orders for material under this specification shall includethe following information:4.1.1 Quantity of each size and class (Table 1),1This
12、 specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.07 onConductors of Light Metals.Current edition approved Sept. 1, 2008. Published October 2008. Originallyapproved in 1963. Last previous edition approved in 20
13、04 as B400 04. DOI:10.1520/B0400_B0400M-08E01.2For 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 Summary page onthe ASTM website.3Available from
14、 American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from National Technical Information Service (NTIS), 5285 PortRoyal Rd., Springfield, VA 22161, http:/www.ntis.gov.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C70
15、0, West Conshohocken, PA 19428-2959. United States14.1.2 Conductor size; circular-mil area or AWG (Section 7),4.1.3 Class (Section 3),4.1.4 Temper (Section 13),4.1.5 Lay direction if nonstandard (see 6.3 and 6.4), re-versed or unidirectional (see 6.4) or special (see 6.5),4.1.6 Special tension test,
16、 if required (see 17.2),4.1.7 Place of inspection (Section 18), and4.1.8 Packaging and Package Marking (Section 19).5. Joints5.1 1350-H19 Conductors for Use in Bare Overhead Lines:5.1.1 Joints may be made in the six outer wires of seven-strand conductors by cold-pressure welding or by electric-butt,
17、cold-upset welding, but not by electric-butt welding. Joints arenot permitted in the finished center wire of seven-strandedconductors.5.1.2 Joints may be made in any of the wires in conductorsof 18 or more wires by electric-butt welding, cold-pressurewelding, or electric butt, cold-upset welding.5.1
18、.3 The minimum distance between a wire joint andanother joint either in the same wire or in other wires of thecompleted conductor shall be 50 ft 15 m.5.2 Conductors of All Tempers to Be Insulated or Covered:5.2.1 Joints may be made in any of the wires of anystranding by electric-butt welding, cold-p
19、ressure welding, orelectric-butt, cold-upset welding.TABLE 1 Construction of Compact-Round Concentric-Lay-Stranded, Aluminum ConductorsNOTE 1Metric values listed below represent a soft conversion and as such they may not be the same as those metric values which are calculated fromthe basic metric de
20、nsity.Conductor SizeClassNumber ofWiresNominal CompactConductor DiameterNominalMass per1000 ft, lbNominal Massper Kilometer,kgANominal DC Resistanceat 20CCircular Mils AWG mm2in. mm /1000 ft /km1 100 000 557 B 61B1.112 28.2 1031 1537 0.0157 0.05161 000 000 507 B 61B1.060 26.9 937 1394 0.0173 0.05639
21、00 000 456 B 61B0.999 25.4 844 1257 0.0193 0.0632800 000 405 B 61B0.938 23.8 750 1116 0.0217 0.0712750 000 380 B 61B0.908 23.1 703 1046 0.0231 0.0759700 000 355 B 61B0.877 22.3 656 976 0.0248 0.0813650 000 329 B 61B0.845 21.5 609 906 0.0267 0.0875600 000 304 B 61B0.813 20.7 563 838 0.0289 0.0948556
22、500 282 AA 19C0.780 19.8 521 775 0.0312 0.102550 000 279 B 61B0.775 19.7 516 768 0.0315 0.103500 000 253 B 37D0.736 18.7 468 696 0.0347 0.114500 000 253 AA 19C0.736 18.7 468 696 0.0347 0.114477 000 242 AA 19C0.722 18.3 447 665 0.0364 0.119450 000 228 B 37D0.700 17.8 422 628 0.0385 0.126400 000 203 B
23、 37D0.659 16.7 375 558 0.0434 0.142397 500 201 AA, A 19C0.659 16.7 372 554 0.0436 0.143350 000 177 B 37D0.616 15.6 328 488 0.0495 0.162350 000 177 A 19C0.616 15.6 328 488 0.0495 0.162336 400 170 A 19C0.603 15.3 315 469 0.0516 0.169336 400 170 AA 7 0.603 15.3 315 469 0.0516 0.169300 000 152 B 37D0.57
24、0 14.5 281 418 0.0578 0.190300 000 152 A 19C0.570 14.5 281 418 0.0578 0.190300 000 152 AA 7 0.570 14.5 281 418 0.0578 0.190266 800 135 A 19C0.537 13.6 250 372 0.0650 0.213266 800 135 AA 7 0.537 13.6 250 372 0.0650 0.213250 000 127 B 37D0.520 13.2 234 348 0.0694 0.228250 000 127 A 19C0.520 13.2 234 3
25、48 0.0694 0.228250 000 127 AA 7 0.520 13.2 234 348 0.0694 0.228211 600 0000 107 B 19C0.475 12.1 198 295 0.0820 0.269211 600 0000 107 AA, A 7 0.475 12.1 198 295 0.0820 0.269167 800 000 85.0 B 19C0.423 10.7 157 234 0.103 0.338167 800 000 85.0 AA, A 7 0.423 10.7 157 234 0.103 0.338133 100 00 67.4 B 19C
26、0.376 9.55 125 186 0.130 0.428133 100 00 67.4 AA, A 7 0.376 9.55 125 186 0.130 0.428105 600 0 53.5 B 19C0.336 8.53 98.9 147 0.164 0.539105 600 0 53.5 AA, A 7 0.336 8.53 98.9 147 0.164 0.53983 690 1 42.4 B 19C0.299 7.59 78.4 117 0.207 0.68083 690 1 42.4 AA, A 7 0.299 7.59 78.4 117 0.207 0.68066 360 2
27、 33.6 AA, A, B 7 0.268 6.81 62.2 92.6 0.261 0.85752 620 3 26.7 A, B 7 0.238 6.05 49.3 73.3 0.330 1.0841 740 4 21.2 A, B 7 0.213 5.41 39.1 58.2 0.416 1.3626 240 6 13.3 A, B 7 0.169 4.29 24.6 36.6 0.661 2.1716 510 8 8.37 A, B 7 0.134 3.40 15.5 23.1 1.05 3.44A1 lb/1000 ft = 1.488 kg/km.B58 wires minimu
28、m.C18 wires minimum.D35 wires minimum.B400/B400M 08125.2.2 Joints in the individual wires in a finished conductorshall be not closer together than 1 ft 0.3 m for conductors of19 wires or less, or closer than 1 ft in a layer for conductors ofmore than 19 wires.5.3 No joint or splice shall be made in
29、a stranded conductoras a whole.6. Lay6.1 The length of lay or each layer for Classes AA and Ashall be not less than 11 nor more than 17.5 times the outsidediameter of that layer.6.2 The length of lay of the outer layer for Class B shall benot less than 8 nor more than 16 times the outside diameter o
30、fthe completed conductor, except that for sizes No. 2 AWG33.6 mm2 and smaller, the maximum length of lay shall benot more than 17.5 times the outside diameter of the completedconductor.6.3 The direction of lay of the outer layer shall be right-handfor Classes AA and A, and it shall be reversed in su
31、ccessivelayers. For Class A stranding where the conductors are to beinsulated and laid helically with or around aluminum or ACSRmessengers, the stranding lay direction may be unidirectionalor unilay in successive layers.6.4 The direction of lay of the outer layer shall be left-handfor Class B, and i
32、t shall be reversed in successive layers,unidirectional, or unilay.6.5 Other lay requirements may be furnished by specialagreement between the manufacturer and the purchaser.7. Construction7.1 The construction of the conductors shall be as shown inTable 1 as to number of wires and cross-sectional ar
33、ea of thecompleted conductor, and the lay shall be in accordance withSection 6.7.2 Wire used in the fabrication of conductor shall be ofsuch dimensions as to produce a finished conductor having anominal cross-sectional area and diameter as prescribed inTable 1.8. Rated Strength of Conductor8.1 The r
34、ated strength of 1350-H19 conductors shall betaken as the percentage, indicated in Table 2, of the sum of thestrengths of the component wires, calculated on the basis of thenominal wire diameter for the corresponding noncompactedconstruction given in Specification B231/B231M and thespecified minimum
35、 average tensile strength given in Specifi-cation B230/B230M for 1350-H19 wire. A value of 0.13433.41 mm shall be used for the nominal wire diameter for the1100 kcmil compacted construction.8.2 Calculations for rated strengths of 1350-H16, -H26,-H14, -H24, -H142, and -H242 conductors shall be made o
36、nthe basis of the strengths of the component wires using thenominal wire diameter for the noncompacted constructiongiven in Specification B231/B231M and the specified maxi-mum and minimum tensile strengths for the appropriate temperof the respective component wires given in SpecificationB609/B609M.
37、The minimum rated strengths of the conductorsshall be taken as the sum of the calculated minimum strengthsof the component wires multiplied by the rating factor given inTable 2. The maximum rated strength of the conductors shallbe taken as the sum of the calculated maximum strengths of thecomponent
38、wires. A value of 0.1343 3.41 mm shall be usedfor the nominal wire diameter for the 1100 kcmil compactedconstruction.8.3 Rated-strength and breaking-strength values shall berounded to three significant figures, in the final value only, inaccordance with the rounding method of Practice E29.8.4 Rated
39、strengths of conductors are given in Table 3.9. Density9.1 For the purpose of calculating mass, linear density, crosssections, and so forth, the density of aluminum 1350 shall betaken as 2705 kg/m3(0.0975 lb/in.3) at 20C.10. Mass and Electrical Resistance10.1 The mass and electrical resistance of a
40、unit length ofstranded conductor are a function of the length of lay. Theapproximate mass and electrical resistance may be determinedusing an increment of 2 %. When greater accuracy is desired,the increment based on the specific lay of the conductor may becalculated (Explanatory Note 1).10.2 The max
41、imum electrical resistance of a unit length ofstranded conductor shall not exceed the nominal dc resistance(Table 1) +2 % (Explanatory Note 1).10.2.1 When the dc resistance is measured at other than20C, it is to corrected by using the multiplying factor given inTable 4.10.3 For conductors to be used
42、 in covered or insulated wiresor cables, direct current (DC) resistance measurement may beused instead of the method outlined in Section 14 to determinecompliance with this specification.11. Mechanical and Electrical Tests of ConductorsFabricated from Wires other than 1350-H26, -H24, or-H242 and Ann
43、ealed after Stranding to Meet 1350-H26, -H24, or -H242 Requirements11.1 The completed conductor shall be tested as a unit. Theminimum breaking strength of bare conductors shall be not lessthan minimum rated strength if failure occurs in the free lengthat least 1 in. 25 mm beyond the end of either gr
44、ipping device,or shall be not less than 95 % of the minimum rated strength ifTABLE 2 Rating FactorsStrandingRating Factor, %Number of Wires inConductor Number of Layers719619A29337B39161C490A18 wires minimum.B35 wires minimum.C58 wires minimum.B400/B400M 0813failure occurs inside, or within 1 in. of
45、 the end of eithergripping device. The maximum breaking strength of 1350-H26, -H24, or -H242 conductors shall be not greater than theirmaximum rated strengths. The free length between grips of thetest specimen shall be not less than 24 in. 600 mm, and careshall be taken to ensure that the wires in t
46、he conductor areevenly gripped during the test (Section 8 and Explanatory Note3).12. Workmanship, Finish, and Appearance12.1 The conductor shall be clean and free from imperfec-tions not consistent with good commercial practice.13. Requirements of Wires13.1 Before stranding and compacting, the round
47、 wire usedshall meet the requirements of Specifications B230/B230M orB609/B609M, whichever is applicable.13.2 Wire shaped before stranding shall meet the require-ments of the appropriate specification listed in 13.1 except fortensile and elongation requirements and diameter tolerance.For 1350-H19 te
48、mper, the minimum tensile and elongationrequirements shall be 96 % of those for round wire of the samenominal area, provided the completed conductor is capable ofmeeting the requirements of Sections 8 and 17. For 1350-H16or -H26, 1350-H14 or -H24, and 1350-H142 or -H242, thetensile requirements shal
49、l be the same as those for round wiresof equal nominal area. The area tolerances for shaped wire ofall tempers shall be such that the finished conductor conformsto Section 14.14. Variation in Area14.1 The cross-sectional area of the conductor shall be notless than 98 % of the cross-sectional area as specified inColumn 1 of Table 1.TABLE 3 Conductor Rated StrengthsConductor SizeNumber ofWires1350-H191350-H16, -H26 1350-H14, -H241350-H142, -H242Min Max Min Maxcmil AWG mm2kips KN kips KN kips KN kips KN kips KN1 100 000 557 61A19.4 85.2 13.2 57.7
