1、Designation: B 173 01a (Reapproved 2007)e1Standard Specification forRope-Lay-Stranded Copper Conductors Having Concentric-Stranded Members, for Electrical Conductors1This standard is issued under the fixed designation B 173; the number immediately following the designation indicates the year oforigi
2、nal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of De
3、fense.e1NOTETable 1 was editorially corrected in March 2007.1. Scope1.1 This specification covers bare rope-lay-stranded con-ductors having concentric-stranded members made from roundcopper wires, either uncoated or coated with tin, lead, orlead-alloy for use as electrical conductors (Explanatory No
4、te 1and Note 2).1.2 Coated wires shall include only those wires with fin-ished diameters and densities substantially equal to the respec-tive diameters and densities of uncoated wires.1.3 The values stated in inch-pound or SI units are to beregarded separately as standard. Each system shall be usedi
5、ndependently of the other. Combining values from the twosystems may result in nonconformance with the specification.For conductor sizes designated by AWG or kcmil, the require-ments in SI units have been numerically converted fromcorresponding values, stated or derived, in inch-pound units.For condu
6、ctor sizes designated by SI units only, the require-ments are stated or derived in SI units.1.3.1 For density, resistivity, and temperature, the valuesstated in SI units are to be regarded as standard.2. Referenced Documents2.1 The following documents of the issue in effect at thetime of reference f
7、orm a part of this specification to the extentreferenced herein:2.2 ASTM Standards:2B3 Specification for Soft or Annealed Copper WireB8 Specification for Concentric-Lay-Stranded CopperConductors, Hard, Medium-Hard, or SoftB33 Specification for Tinned Soft or Annealed CopperWire for Electrical Purpos
8、esB 172 Specification for Rope-Lay-Stranded Copper Con-ductors Having Bunch-Stranded Members, for ElectricalConductorsB 189 Specification for Lead-Coated and Lead-Alloy-Coated Soft Copper Wire for Electrical PurposesB 263 Test Method for Determination of Cross-SectionalArea of Stranded ConductorsB 3
9、54 Terminology Relating to Uninsulated Metallic Elec-trical Conductors2.3 American National Standard:ANSI C42.35 Definitions of Electrical Terms33. Classification3.1 For the purpose of this specification rope-lay-strandedconductors having concentric-stranded members are classifiedas follows:3.1.1 Cl
10、ass GConductors consisting of 7 to 61 rope-lay-stranded members, each of which consists of 7 to 19concentric-stranded wires, with total conductor sizes rangingfrom No. 14 AWG (2.08 mm2) to 5 000 000 cmil (2534 mm2).(Typical use is for rubber-sheathed conductor, apparatus con-ductor, portable conduct
11、or, and similar applications.)3.1.2 Class HConductors consisting of 19 to 91 rope-lay-stranded members, each of which consists of 7 to 19concentric-stranded wires, with total conductor sizes rangingfrom No. 9 AWG (6.63 mm2) to 5 000 000 cmil (2534 mm2).Class K construction produces a conductor with
12、greater flex-ibility than class G. (Typical use is for rubber-sheathed cordand applications where flexibility is required such as ontake-up reels over sheaves and extra-flexible apparatus con-ductor.)4. Ordering Information4.1 Orders for material under this specification shall includethe following i
13、nformation:4.1.1 Quantity of each size and class;1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.04 onConductors of Copper and Copper Alloys.Current edition approved March 15, 2007. Published April 2007.
14、 Originallyapproved in 1942 to replace portions of B 158 41 T. Last previous editionapproved in 2001 as B 173 01a.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 th
15、e standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.1.2
16、 Conductor size: circular-mil area or AWG (Section 7);4.1.3 Class (Section 3 and Table 1);4.1.4 Whether coated or uncoated; if coated, designate typeof coating (see 11.1);4.1.5 Details of special-purpose lays, if required (see 6.2and 6.3) and (Explanatory Note 3);4.1.6 Package size (see 14.1);4.1.7
17、Special package marking, if required (Section 15);4.1.8 Lagging, if required (see 14.2); and4.1.9 Place of inspection (Section 13).5. Joints5.1 Necessary joints in wires or in groups of wires shall bemade in accordance with accepted commerical practice, takinginto account the size of the wire or gro
18、up of wires as related tothe size of the entire conductor.TABLE 1 Construction Requirements of Rope-Lay Stranded Copper Conductors Having Concentric-Stranded MembersAArea of CrossSectionSizeAWGClass G Class HNumberofWiresDiameter ofWiresNumberofWiresin EachMemberCompleted ConductorBNumberof WiresDia
19、meter ofWiresNumberofWiresin EachMemberCompleted ConductorBNominalDiameterNominalMassNominalDiameterNominalMasscmil mm2 in. mm in. mmlb/1000 ftkg/km in. mm in. mmlb/1000 ftkg/km5 000 000 2534 . . . 1159 0.0657 1.67 19 2.957 75.1 16 052 23 888 1729 0.0538 1.37 19 2.959 75.2 16 057 23 8964 500 000 228
20、0 . . . 1159 0.0623 1.58 19 2.804 71.2 14 433 21 479 1729 0.0510 1.30 19 2.805 71.2 14 429 21 4734 000 000 2027 . . . 1159 0.0587 1.49 19 2.642 67.1 12 814 19 069 1729 0.0481 1.22 19 2.646 67.2 12 835 19 1013 500 000 1773 . . . 1159 0.0550 1.40 19 2.475 62.9 11 249 16 741 1729 0.0450 1.14 19 2.475 6
21、2.9 11 234 16 7183 000 000 1520 . . . 1159 0.0509 1.29 19 2.291 58.2 9635 14 338 1729 0.0417 1.06 19 2.294 58.3 9647 14 3562 500 000 1267 . . . 703 0.0596 1.51 19 2.086 53.0 8012 11 924 1159 0.0464 1.18 19 2.088 53.0 8006 11 9152 000 000 1013 . . . 703 0.0533 1.35 19 1.866 47.4 6408 9536 1159 0.0415
22、 1.05 19 1.868 47.4 6405 95311 900 000 963 . . . 703 0.0520 1.32 19 1.820 46.2 6099 9077 1159 0.0405 1.03 19 1.823 46.3 6100 90771 800 000 912 . . . 703 0.0506 1.29 19 1.771 45.0 5775 8594 1159 0.0394 1.00 19 1.773 45.0 5773 85911 750 000 887 . . . 703 0.0499 1.27 19 1.747 44.4 5617 8358 1159 0.0389
23、 0.99 19 1.751 44.5 5627 83741 700 000 861 . . . 703 0.0492 1.25 19 1.722 43.7 5460 8125 1159 0.0383 0.97 19 1.724 43.8 5455 81181 600 000 811 . . . 703 0.0477 1.21 19 1.670 42.4 5132 7638 1159 0.0372 0.94 19 1.674 42.5 5146 76581 500 000 760 . . . 427 0.0593 1.51 7 1.601 40.7 4772 7102 703 0.0462 1
24、.17 19 1.617 41.1 4815 71651 400 000 709 . . . 427 0.0573 1.46 7 1.547 39.3 4456 6631 703 0.0446 1.13 19 1.561 39.6 4487 66771 300 000 659 . . . 427 0.0552 1.40 7 1.490 37.8 4135 6154 703 0.0430 1.09 19 1.505 38.2 4171 62071 250 000 633 . . . 427 0.0541 1.37 7 1.461 37.1 3972 5911 703 0.0422 1.07 19
25、 1.477 37.5 4017 59781 200 000 608 . . . 427 0.0530 1.35 7 1.431 36.3 3812 5673 703 0.0413 1.05 19 1.446 36.7 3847 57261 100 000 557 . . . 427 0.0508 1.29 7 1.372 34.8 3502 5212 703 0.0396 1.01 19 1.386 35.2 3537 52641 000 000 507 . . . 427 0.0484 1.23 7 1.307 33.2 3179 4731 703 0.0377 0.96 19 1.320
26、 33.5 3206 4771900 000 456 . . . 427 0.0459 1.17 7 1.239 31.5 2859 4255 703 0.0358 0.91 19 1.253 31.8 2891 4302800 000 405 . . . 427 0.0433 1.10 7 1.169 29.7 2544 3787 703 0.0337 0.86 19 1.180 30.0 2562 3812750 000 380 . . . 427 0.0419 1.06 7 1.131 28.7 2383 3546 703 0.0327 0.83 19 1.145 29.1 2412 3
27、589700 000 355 . . . 427 0.0405 1.03 7 1.094 27.8 2226 3313 703 0.0316 0.80 19 1.106 28.1 2252 3352650 000 329 . . . 427 0.0390 0.99 7 1.053 26.7 2064 3072 703 0.0304 0.77 19 1.064 27.0 2085 3102600 000 304 . . . 427 0.0375 0.95 7 1.013 25.7 1908 2840 703 0.0292 0.74 19 1.022 26.0 1923 2862550 000 2
28、79 . . . 427 0.0359 0.91 7 0.969 24.6 1749 2603 703 0.0280 0.71 19 0.980 24.9 1768 2632500 000 253 . . . 259 0.0439 1.12 7 0.922 23.4 1579 2350 427 0.0342 0.87 7 0.923 23.4 1587 2362450 000 228 . . . 259 0.0417 1.06 7 0.876 22.3 1425 2120 427 0.0325 0.83 7 0.878 22.3 1433 2133400 000 203 . . . 259 0
29、.0393 1.00 7 0.825 21.0 1265 1883 427 0.0306 0.78 7 0.826 21.0 1271 1891350 000 177 . . . 259 0.0368 0.93 7 0.773 19.6 1109 1651 427 0.0286 0.73 7 0.772 19.6 1110 1652300 000 152 . . . 259 0.0340 0.86 7 0.714 18.1 947 1409 427 0.0265 0.67 7 0.716 18.2 953 1418250 000 127 . . . 259 0.0311 0.79 7 0.65
30、3 16.6 792 1179 427 0.0242 0.61 7 0.653 16.6 795 1183211 600 107 0000 133 0.0399 1.01 7 0.599 15.2 667 992 259 0.0286 0.73 7 0.601 15.3 670 997167 800 85.0 000 133 0.0355 0.90 7 0.533 13.5 528 785 259 0.0255 0.65 7 0.536 13.6 533 793133 100 67.4 00 133 0.0316 0.80 7 0.474 12.0 418 622 259 0.0227 0.5
31、8 7 0.477 12.1 422 628105 600 53.5 0 133 0.0282 0.72 7 0.423 10.7 333 495 259 0.0202 0.51 7 0.424 10.8 334 49783 690 42.4 1 133 0.0251 0.64 7 0.377 9.58 264 393 259 0.0180 0.46 7 0.378 9.60 265 39566 360 33.6 2 49 0.0368 0.93 7 0.331 8.41 207 308 259 0.0160 0.41 7 0.335 8.51 210 31252 620 26.7 3 49
32、0.0328 0.83 7 0.295 7.49 164 245 133 0.0199 0.51 7 0.299 7.59 166 24741 740 21.1 4 49 0.0292 0.74 7 0.263 6.68 130 194 133 0.0177 0.45 7 0.266 6.76 131 19533 090 16.8 5 49 0.0260 0.66 7 0.234 5.94 103 154 133 0.0158 0.40 7 0.237 6.02 105 15626 240 13.3 6 49 0.0231 0.59 7 0.208 5.28 81.5 121 133 0.01
33、40 0.36 7 0.210 5.33 82.1 12220 820 10.5 7 49 0.0206 0.52 7 0.185 4.70 64.8 96.5 133 0.0125 0.32 7 0.188 4.78 65.4 97.416 510 8.37 8 49 0.0184 0.47 7 0.166 4.22 51.7 77.0 133 0.0111 0.28 7 0.167 4.24 51.6 76.813 090 6.63 9 49 0.0163 0.41 7 0.148 3.76 40.6 60.4 133 0.0099 0.25 7 0.149 3.78 41.0 61.11
34、0 380 5.26 10 49 0.0146 0.37 7 0.131 3.33 32.6 48.56530 3.31 12 49 0.0115 0.29 7 0.104 2.64 20.2 30.14110 2.08 14 49 0.0092 0.23 7 0.083 2.11 12.9 19.2Editorially corrected.AThe constructions shown in this table are typical of those used in the industry. It is not intended that this table preclude o
35、ther constructions that may be desirable forspecific applications. The constructions shown provide for a finished, non-covered, stranded conductor approximately of the area indicated. When specified by thepurchaser, the number or size of wires may be increased to provide additional area to compensat
36、e for draw-down during subsequent processing.BValues for the nominal diameter and mass of the completed conductor are approximate. The mass values are based upon the standard stranding increments listedin Explanatory Note 6.B 173 01a (2007)e125.2 Concentric-stranded members forming the completedcond
37、uctor may be joined as a unit by soldering, brazing, orwelding.5.3 Joints shall be so constructed and so disposed through-out the conductor that the diameter or configuration of thecompleted conductor is not substantially affected, and so thatthe flexibility of the completed conductor is not adverse
38、lyaffected.6. Lay (Explanatory Note 3)6.1 Conductors of the same size and description furnishedon one order shall have the same lay.6.2 The length of lay of the outer layer of the rope-laystranded conductor shall be not less than 8 nor more than 16times the outside diameter of the completed conducto
39、r. Thelength of lay of the other layers shall be at the option of themanufacturer unless specifically agreed upon. The direction oflay of the outer layer shall be left-hand, unless the direction oflay is specified otherwise by the purchaser. The direction of layof the other layers shall be reversed
40、in successive layers, unlessotherwise agreed upon between the manufacturer and thepurchaser.6.3 The length of lay of the individual wires composing thestranded members shall be not less than 8 nor more than 16times the outside diameter of that layer. Unless otherwisespecified, the direction of lay o
41、f the outer layer of wires shallbe at the option of the manufacturer. The direction of lay shallbe reversed in successive layers, unless otherwise agreed uponbetween the manufacturer and the purchaser.7. Construction7.1 The area of cross section and the number and diameterof wires for a variety of s
42、trand constructions in general use areshown in Table 1.8. Physical and Electrical Tests8.1 Tests for the electrical properties of wires composingconductors made from soft or annealed copper wire, bare orcoated, shall be made before stranding.8.2 Tests for the physical properties of soft or annealedc
43、opper wire, bare or coated, may be made upon the wiresbefore stranding or upon wires removed from the completedstranded conductors, but need not be made upon both. Careshall be taken to avoid mechanical injury and stretching whenremoving wires from the conductor for the purpose of testing.8.3 The ph
44、ysical properties of wire when tested beforestranding shall conform to the applicable requirements of 11.1.8.4 The physical properties of wires removed from thecompleted stranded conductor shall be permitted to vary fromthe applicable requirements of 11.1 by the following amounts:(Explanatory Note 4
45、):8.4.1 Average of Results Obtained on All Wires TestedThepercent minimum elongation may be reduced by the value of5 % from the values required for unstranded wires as specifiedby Specifications B 3, B 33, or B 189, as applicable. Forexample, where the unstranded wire specification requiresminimum e
46、longation of 30 %, wire of that material removedfrom Specification B 173 stranded conductor shall meet aminimum elongation value of 25 %, a value 5 % reduction.8.4.2 Results Obtained on Individual WiresThe percentminimum elongation may be reduced by the value of 15 %from the values required for unst
47、randed wires as specified bySpecifications B 3, B 33, or B 189, as applicable. For example,where the unstranded wire specification requires minimumelongation of 30 %, wire of that material removed fromSpecification B 173 stranded conductor shall meet a minimumelongation value of 15 %. If the reducti
48、on results in minimumelongation of less than 5 %, a minimum of 5 % shall apply.8.5 In the event that the requirements prescribed in 8.4.2 aremet, but those prescribed in 8.4.1 are not met, a retest shall bepermitted wherein all wires of a conductor of 100 wires or less,or 100 wires selected at rando
49、m throughout a conductor ofmore than 100 wires shall be tested for the purpose of finaldetermination for conformance to 8.4.8.6 Elongation tests to determine compliance shall not bemade on the conductor as a unit.8.7 If a tinning, lead-coating, or lead-alloy-coating test isrequired, it shall be made on the wires prior to stranding.9. Density9.1 For the purpose of calculating mass, cross sections, etc.,the density of copper shall be taken as 8.89 g/cm3(0.32117lb/in.3) at 20C (Explanatory Note 5).10. Mass and Resistance10.1 The mass and electrical resistance of a unit length
