1、Designation: B173 10 (Reapproved 2015)B173 17Standard Specification forRope-Lay-Stranded Copper Conductors Having Concentric-Stranded Members, for Electrical Conductors1This standard is issued under the fixed designation B173; the number immediately following the designation indicates the year ofori
2、ginal 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.This standard has been approved for use by agencies of the U.S. Department
3、 of Defense.1. Scope1.1 This specification covers bare rope-lay-stranded conductors having concentric-stranded members made from round copperwires, either uncoated or coated with tin, lead, or lead-alloy for use as electrical conductors (Explanatory Note 1 and Note 2).1.2 Coated wires shall include
4、only those wires with finished diameters and densities substantially equal to the respectivediameters and densities of uncoated wires.1.3 The values stated in inch-pound or SI units are to be regarded separately as standard. Each system shall be usedindependently of the other. Combining values from
5、the two systems may result in nonconformance with the specification. Forconductor sizes designated by AWG or kcmil, the requirements in SI units have been numerically converted from correspondingvalues, stated or derived, in inch-pound units. For conductor sizes designated by SI units only, the requ
6、irements are stated orderived in SI units.1.3.1 For density, resistivity, and temperature, the values stated in SI units are to be regarded as standard.1.4 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision
7、 on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 The following documents of the issue in effect at the time of reference form a part of this specifica
8、tion to the extentreferenced herein:2.2 ASTM Standards:2B3 Specification for Soft or Annealed Copper WireB8 Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or SoftB33 Specification for Tin-Coated Soft or Annealed Copper Wire for Electrical PurposesB172 Specification f
9、or Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members, for Electrical ConductorsB189 Specification for Lead-Coated and Lead-Alloy-Coated Soft Copper Wire for Electrical PurposesB193 Test Method for Resistivity of Electrical Conductor MaterialsB263 Test Method for Determination of Cros
10、s-Sectional Area of Stranded ConductorsB354 Terminology Relating to Uninsulated Metallic Electrical Conductors2.3 American National Standard:ANSI C42.35 Definitions of Electrical Terms33. Classification3.1 For the purpose of this specification rope-lay-stranded conductors having concentric-stranded
11、members are classified asfollows:1 This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.04 on Conductorsof Copper and Copper Alloys.Current edition approved April 1, 2015April 1, 2017. Published April 2015Apr
12、il 2017. Originally approved in 1942 to replace portions of B158 41 T. Last previousedition approved in 20102015 as B173 10.B173 10 (2015). DOI: 10.1520/B0173-10R15.10.1520/B0173-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.or
13、g. For Annual Book of ASTM 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.This document is not an ASTM standard and is inten
14、ded 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 possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the curren
15、t versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.1 Class GConductors consisting of 7 to 61 rope-lay-stranded members, each of which consists of
16、 7 to 19 concentric-stranded wires, with total conductor sizes ranging from No. 14 AWG (2.08 mm2) to 5 000 000 cmil (2534 mm2). (Typical use isfor rubber-sheathed conductor, apparatus conductor, portable conductor, and similar applications.)3.1.2 Class HConductors consisting of 19 to 91 rope-lay-str
17、anded members, each of which consists of 7 to 19concentric-stranded wires, with total conductor sizes ranging from No. 9 AWG (6.63 mm2) to 5 000 000 cmil (2534 mm2). ClassK construction produces a conductor with greater flexibility than class G. (Typical use is for rubber-sheathed cord and applicati
18、onswhere flexibility is required such as on take-up reels over sheaves and extra-flexible apparatus conductor.)4. Ordering Information4.1 Orders for material under this specification shall include the following information:4.1.1 Quantity of each size and class;4.1.2 Conductor size: circular-mil area
19、 or AWG (Section 7);4.1.3 Class (Section 3 and Tables 1 and 2);4.1.4 Whether coated or uncoated; if coated, designate type of coating (see 11.1);4.1.5 Details of special-purpose lays, if required (see 6.2 and 6.3) and (Explanatory Note 3);4.1.6 Package size (see 14.1);4.1.7 Special package marking,
20、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 be made in accordance with accepted commercial practice, taking intoaccount the size of the wire or group of wires as related t
21、o the size of the entire conductor.5.2 Concentric-stranded members forming the completed conductor may be joined as a unit by soldering, brazing, or welding.5.3 Joints shall be so constructed and so disposed throughout the conductor that the diameter or configuration of the completedconductor is not
22、 substantially affected, and so that the flexibility of the completed conductor is not adversely affected.6. Lay (Explanatory Note 3)6.1 Conductors of the same size and description furnished on one order shall have the same lay.6.2 The length of lay of the outer layer of the rope-lay stranded conduc
23、tor shall be not less than 8 nor more than 16 times theoutside diameter of the completed conductor. The length of lay of the other layers shall be at the option of the manufacturer unlessspecifically agreed upon. The direction of lay of the outer layer shall be left-hand, unless the direction of lay
24、 is specified otherwiseby the purchaser. The direction of lay of the other layers shall be reversed in successive layers, unless otherwise agreed uponbetween the manufacturer and the purchaser.6.3 The length of lay of the individual wires composing the stranded members shall be not less than 8 nor m
25、ore than 16 timesthe outside diameter of that layer. Unless otherwise specified, the direction of lay of the outer layer of wires shall be at the optionof the manufacturer. The direction of lay shall be reversed in successive layers, unless otherwise agreed upon between themanufacturer and the purch
26、aser.7. Construction7.1 The area of cross section and the number and diameter of wires for a variety of strand constructions in general use are shownin Tables 1 and 2.8. Physical and Electrical Tests8.1 Tests for the electrical properties of wires composing conductors made from soft or annealed copp
27、er wire, bare or coated,shall be made before stranding.8.2 Tests for the physical properties of soft or annealed copper wire, bare or coated, may be made upon the wires beforestranding or upon wires removed from the completed stranded conductors, but need not be made upon both. Care shall be takento
28、 avoid mechanical injury and stretching when removing wires from the conductor for the purpose of testing.8.3 The physical properties of wire when tested before stranding shall conform to the applicable requirements of 11.1.8.4 The physical properties of wires removed from the completed stranded con
29、ductor shall be permitted to vary from theapplicable requirements of 11.1 by the following amounts: (Explanatory Note 4):8.4.1 Average of Results Obtained on All Wires TestedThe percent minimum elongation may be reduced by the value of 5 %from the values required for unstranded wires as specified by
30、 Specifications B3, B33, or B189, as applicable. For example, wherethe unstranded wire specification requires minimum elongation of 30 %, wire of that material removed from Specification B173stranded conductor shall meet a minimum elongation value of 25 %, a value 5 % reduction.B173 172TABLE 1 Const
31、ructional and DC Resistance Requirements of Rope-Lay Stranded Copper Conductors Having Concentric-Stranded MembersClass GAArea of CrossSection SizeAWGCompleted ConductorB Uncoated Copper Tinned CopperNumberofWiresDiameterofWiresNumberofWiresin EachMemberNominalDiameterNominalMassNominal DCResistance
32、20CMaximum DCResistance 20CNominal DCResistance 20CMaximum DCResistance 20Ccmil mm2 in. mm in. mmlb/1000ftkg/km ohm/1000 ft ohm/km ohm/1000 ft ohm/km ohm/1000 ft ohm/km ohm/1000 ft ohm/km5 000 000 2534 . . . 1159 0.0657 1.67 19 2.957 75.1 16 052 23 888 0.00220 0.00721 0.00224 0.00735 0.00229 0.00750
33、 0.00234 0.007654 500 000 2280 . . . 1159 0.0623 1.58 19 2.804 71.2 14 433 21 479 0.00244 0.00801 0.00249 0.00817 0.00254 0.00833 0.00259 0.008504 000 000 2027 . . . 1159 0.0587 1.49 19 2.642 67.1 12 814 19 069 0.00275 0.00902 0.00281 0.00920 0.00286 0.00938 0.00292 0.009573 500 000 1773 . . . 1159
34、0.0550 1.40 19 2.475 62.9 11 249 16 741 0.00314 0.0103 0.00320 0.0105 0.00327 0.0107 0.00334 0.01093 000 000 1520 . . . 1159 0.0509 1.29 19 2.291 58.2 9635 14 338 0.00366 0.0120 0.00373 0.0122 0.00381 0.0125 0.00389 0.01282 500 000 1267 . . . 703 0.0596 1.51 19 2.086 53.0 8012 11 924 0.00440 0.0144
35、0.00449 0.0147 0.00457 0.0150 0.00466 0.01532 000 000 1013 . . . 703 0.0533 1.35 19 1.866 47.4 6408 9536 0.00550 0.0180 0.00561 0.0184 0.00572 0.0188 0.00583 0.01921 900 000 963 . . . 703 0.0520 1.32 19 1.820 46.2 6099 9077 0.00579 0.0190 0.00591 0.0194 0.00602 0.0197 0.00614 0.02011 800 000 912 . .
36、 . 703 0.0506 1.29 19 1.771 45.0 5775 8594 0.00611 0.0200 0.00623 0.0204 0.00635 0.0208 0.00648 0.02121 750 000 887 . . . 703 0.0499 1.27 19 1.747 44.4 5617 8358 0.00628 0.0206 0.00641 0.0210 0.00653 0.0214 0.00666 0.02181 700 000 861 . . . 703 0.0492 1.25 19 1.722 43.7 5460 8125 0.00647 0.0212 0.00
37、660 0.0216 0.00672 0.0221 0.00685 0.02251 600 000 811 . . . 703 0.0477 1.21 19 1.670 42.4 5132 7638 0.00687 0.0225 0.00701 0.0230 0.00715 0.0234 0.00729 0.02391 500 000 760 . . . 427 0.0593 1.51 7 1.601 40.7 4772 7102 0.00726 0.0238 0.00741 0.0243 0.00755 0.0248 0.00770 0.02531 400 000 709 . . . 427
38、 0.0573 1.46 7 1.547 39.3 4456 6631 0.00778 0.0255 0.00794 0.0260 0.00809 0.0265 0.00825 0.02701 300 000 659 . . . 427 0.0552 1.40 7 1.490 37.8 4135 6154 0.00838 0.0275 0.00855 0.0281 0.00871 0.0286 0.00888 0.02921 250 000 633 . . . 427 0.0541 1.37 7 1.461 37.1 3972 5911 0.00871 0.0286 0.00888 0.029
39、2 0.00906 0.0297 0.00924 0.03031 200 000 608 . . . 427 0.0530 1.35 7 1.431 36.3 3812 5673 0.00907 0.0298 0.00925 0.0304 0.00944 0.0310 0.00963 0.03161 100 000 557 . . . 427 0.0508 1.29 7 1.372 34.8 3502 5212 0.00990 0.0325 0.0101 0.0332 0.0103 0.0338 0.0105 0.03451 000 000 507 . . . 427 0.0484 1.23
40、7 1.307 33.2 3179 4731 0.01090 0.0357 0.0111 0.0364 0.0113 0.0372 0.0115 0.0379900 000 456 . . . 427 0.0459 1.17 7 1.239 31.5 2859 4255 0.0121 0.0397 0.0123 0.0405 0.0126 0.0413 0.0129 0.0421800 000 405 . . . 427 0.0433 1.10 7 1.169 29.7 2544 3787 0.0136 0.0447 0.0139 0.0456 0.0142 0.0464 0.0145 0.0
41、473750 000 380 . . . 427 0.0419 1.06 7 1.131 28.7 2383 3546 0.0145 0.0476 0.0148 0.0486 0.0151 0.0495 0.0154 0.0505700 000 355 . . . 427 0.0405 1.03 7 1.094 27.8 2226 3313 0.0156 0.0510 0.0159 0.0520 0.0162 0.0531 0.0165 0.0542650 000 329 . . . 427 0.0390 0.99 7 1.053 26.7 2064 3072 0.0168 0.0550 0.
42、0171 0.0561 0.0174 0.0572 0.0177 0.0583600 000 304 . . . 427 0.0375 0.95 7 1.013 25.7 1908 2840 0.0181 0.0595 0.0185 0.0607 0.0189 0.0619 0.0193 0.0631550 000 279 . . . 427 0.0359 0.91 7 0.969 24.6 1749 2603 0.0198 0.0650 0.0202 0.0663 0.0206 0.0676 0.0210 0.0690500 000 253 . . . 259 0.0439 1.12 7 0
43、.922 23.4 1579 2350 0.0217 0.0711 0.0221 0.0725 0.0225 0.0740 0.0230 0.0755450 000 228 . . . 259 0.0417 1.06 7 0.876 22.3 1425 2120 0.0241 0.0790 0.0246 0.0806 0.0251 0.0822 0.0255 0.0838400 000 203 . . . 259 0.0393 1.00 7 0.825 21.0 1265 1883 0.0271 0.0889 0.0276 0.0907 0.0282 0.0924 0.0288 0.09423
44、50 000 177 . . . 259 0.0368 0.93 7 0.773 19.6 1109 1651 0.0310 0.102 0.0316 0.104 0.0322 0.106 0.0328 0.108300 000 152 . . . 259 0.0340 0.86 7 0.714 18.1 947 1409 0.0361 0.119 0.0368 0.121 0.0376 0.123 0.0384 0.125250 000 127 . . . 259 0.0311 0.79 7 0.653 16.6 792 1179 0.0434 0.142 0.0443 0.145 0.04
45、51 0.148 0.0460 0.151211 600 107 0000 133 0.0399 1.01 7 0.599 15.2 667 992 0.0510 0.167 0.0520 0.170 0.0530 0.174 0.0541 0.177167 800 85.0 000 133 0.0355 0.90 7 0.533 13.5 528 785 0.0643 0.211 0.0656 0.215 0.0668 0.219 0.0681 0.223133 100 67.4 00 133 0.0316 0.80 7 0.474 12.0 418 622 0.0810 0.266 0.0
46、826 0.271 0.0843 0.276 0.0860 0.282105 600 53.5 0 133 0.0282 0.72 7 0.423 10.7 333 495 0.102 0.335 0.104 0.342 0.106 0.348 0.108 0.35583 690 42.4 1 133 0.0251 0.64 7 0.377 9.6 264 393 0.129 0.423 0.132 0.431 0.134 0.440 0.137 0.44966 360 33.6 2 49 0.0368 0.93 7 0.331 8.4 207 308 0.161 0.528 0.164 0.
47、539 0.167 0.549 0.170 0.56052 620 26.7 3 49 0.0328 0.83 7 0.295 7.5 164 245 0.203 0.666 0.207 0.679 0.211 0.693 0.215 0.70741 740 21.1 4 49 0.0292 0.74 7 0.263 6.7 130 194 0.256 0.840 0.261 0.857 0.266 0.873 0.271 0.89033 090 16.8 5 49 0.0260 0.66 7 0.234 5.9 103 154 0.323 1.06 0.329 1.08 0.336 1.10
48、 0.343 1.1226 240 13.3 6 49 0.0231 0.59 7 0.208 5.3 81.5 121 0.407 1.34 0.415 1.37 0.423 1.39 0.431 1.4220 820 10.5 7 49 0.0206 0.52 7 0.185 4.7 64.8 96.5 0.513 1.68 0.523 1.71 0.534 1.75 0.545 1.7916 510 8.37 8 49 0.0184 0.47 7 0.166 4.2 51.7 77.0 0.647 2.12 0.660 2.16 0.687 2.25 0.701 2.3013 090 6
49、.63 9 49 0.0163 0.41 7 0.148 3.8 40.6 60.4 0.816 2.68 0.832 2.73 0.867 2.84 0.884 2.9010 380 5.26 10 49 0.0146 0.37 7 0.131 3.3 32.6 48.5 1.03 3.38 1.05 3.45 1.09 3.59 1.11 3.66B173173TABLE 1 ContinuedArea of CrossSection SizeAWGCompleted ConductorB Uncoated Copper Tinned CopperNumberofWiresDiameterofWiresNumberofWiresin EachMemberNominalDiameterNominalMassNominal DCResistance20CMaximum DCResistance 20CNominal DCResistance 20CMaximum DCResistance 20Ccmil mm2 in. mm in. mmlb/1000ftkg/km ohm/1000 ft ohm/km ohm/1000 ft ohm/km ohm/1000 ft ohm/km ohm/1000 ft ohm/km653
