Designation: B232/B232M − 11
Standard Specification for
Concentric-Lay-Stranded Aluminum Conductors, CoatedSteel Reinforced (ACSR) 1 This standard is issued under the fixed designation B232/B232M; the number immediately following the designation indicates the year of original adoption or, in 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. Sco Scope pe
2. Referenc Referenced ed Documents
1.1 This specifi specification cation covers concen concentric-la tric-lay-stra y-stranded nded conductorss made from roun ductor round d alumin aluminum um 1350-H19 (extra hard) wires and round, coated steel core wire(s) for use as overhead electrical electric al condu conductors ctors (Expla (Explanator natory y Note Note 1 and Explan Explanatory atory Note 2). 2).
2.1 The following following documents documents of the issue in effect on date of material purchase form a part of this specification to the extent refer referenced enced herein herein:: 2.2 ASTM Standards: 2 B230/B230M Spe B230/B230M Specificatio cification n for Aluminum 1350 1350–H19 –H19 Wir Wiree for Electrical Purposes B263 Test Met Method hod for Det Determ ermina ination tion of Cro Crossss-Sec Section tional al Area of Stranded Conductors B354 Terminology B354 Terminology Relating to Uninsulated Metallic Electrical Conductors B498/B498M Specifi Specification cation for Zinc-Co Zinc-Coated ated (Galva (Galvanized) nized) Steel Core Wire for Use in Overhead Electrical Conductors B500/B500M Specifi Specification cation for Metallic Coated or Aluminum nu m Cla Clad d St Stra rand nded ed St Stee eell Co Core re fo forr Us Usee in Ov Over erhe head ad Electrical Conductors B606 Specification B606 Specification for High-Strength Zinc-Coated (Galvanized) nize d) Ste Steel el Cor Coree Wire for Aluminum Aluminum and Aluminum Aluminum-Alloy Condu Conductors, ctors, Steel Reinfo Reinforced rced B802/B802M Spe Specific cificatio ation n for Zinc Zinc–5 –5 % Alu Alumin minumumMischmetal Alloy-Coated Steel Core Wire for Aluminum Conductors, Condu ctors, Steel Reinfo Reinforced rced (ACSR) B803 Specification B803 Specification for High-Strength Zinc–5 % AluminumMischm Mis chmetal etal Alloy-Co Alloy-Coated ated Ste Steel el Cor Coree Wi Wire re for Use in Overhead Electrical Conductors B957 Specification B957 Specification for Extra-High-Strength and Ultra-HighStrength Streng th Zinc-C Zinc-Coated oated (Galvanized) (Galvanized) Steel Core Wir Wiree for Overhead Electrical Conductors B958 Specification B958 Specification for Extra-High-Strength and Ultra-HighStrength Class A Zinc–5% Aluminum-Mischmetal AlloyCoated Steel Core Wire for Use in Overhead Electrical Conductors E29 Pra Practic cticee for Using Sig Signifi nifican cantt Dig Digits its in Test Data to Determine Conformance with Specifications E527 Pr Prac actic ticee fo forr Nu Numb mber erin ing g Me Metal talss an and d Al Allo loys ys in th thee Unified Numbering System (UNS)
1.2 ACS ACSR R cov covere ered d by this spe specific cificatio ation n has nine typ types es of coated steel core wire which are designated by abbreviations as follows (Explanatory Note 2) 2): 1.2.1 ACSR/GA or ACSR/GA2—ACSR using Class A zinccoated steel wire, 1.2.2 ACSR/GC or ACSR/GC2—ACSR using Class C zinccoated steel wire, 1.2.3 ACSR/MA or ACSR/MA2—ACSR using Class A Zn5A1-MM coated steel wire, 1.2.4 ACSR/HS or ACSR/GA3—ACSR using Class A zinccoated high-strength steel wires, ACSR/MA3—A MA3—ACSR CSR using Class A Zn1.2.5 ACSR/MS or ACSR/ 5A1-MM coated high-strength steel wires, 1.2.6 ACSR/GA4—ACSR using Class A zinc-coated extrahigh-strength steel wires, 1.2.7 ACSR/MA4—ACSR using using Clas Classs A ZnZn-5A1 5A1-MM -MM coated extra-high-strength steel wires, 1.2.8 ACSR/GA5—ACSR using Class A zinc-co zinc-coated ated ultrahigh-strength steel wires, 1.2.9 ACSR/MA5—ACSR usin using g Class A Zn-5A Zn-5Al-MM l-MM coated coated ultra-high-strength steel wires. 1.3 The values stated in either SI units or inch-pound inch-pound units are to be regarded separately as standard. The values stated in each system may not be exa exact ct equ equiva ivalen lents; ts; the theref refore ore,, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1
This specification specification is under the juris jurisdictio diction n of ASTM Committee B01 on Electrical Conductors Electrical Conductors and is the direc directt respo responsibil nsibility ity of Subc Subcommitt ommittee ee B01.07 B01.07 on on Conductors of Light Metals. Current edition approved Oct. 1, 2011. Published November 2011. Originally approved in 1948. Last previous edition approved in 2009 as B232/B232M – 09. DOI: 10.1520/B0232_B0232M-11.
2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at
[email protected]. For Annual Book of ASTM Standards volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
B232/B232M − 11 2.3 ANSI Documents: ANSI H35.1 American National Standard Alloy and Temper Designation Systems for Aluminum 3 ANSI H35.1M American National Standard for Alloy and Temper Designations Systems for Aluminum [Metric] 3 2.4 NIST Document: NBS Handbook 100—Copper Wire Tables 4 2.5 Aluminum Association Document: Publication 50, Code Words for Overhead Aluminum Electrical Conductors5
4.1.1.1 Conductors used for regular over-head line construction, and 4.1.1.2 Conductors having a high ratio of mechanical strength to current-carrying capacity used for overhead ground wires and for extra-long span construction. These are denoted under the Class column in Table 1 and Table 2 as “(HS)” for High Strength. 4.1.2 Class A— For conductors to be covered with weatherresistant materials. 5. Ordering Information
3. Terminology
5.1 Orders for material under this specification shall include the following information: 5.1.1 Quantity of each size, stranding, and class, 5.1.2 Conductor size, circular-mil area or AWG (Section 9 and Table 1), 5.1.3 Number of wires, aluminum and steel (see Tables 1-5), 5.1.4 Type of steel core wire and type and area density (if applicable) of coating (see 6.2), 5.1.5 Direction of lay of outer layer of aluminum wires if other than right-hand (see 8.3), 5.1.6 Special tension test, if desired (see 15.3), 5.1.7 Place of inspection (Section 16), 5.1.8 Package size and type (see 17.1), 5.1.9 Heavy wood lagging, if required (see 17.3), and 5.1.10 Special package marking, if required (see 17.4).
3.1 Definitions: 3.1.1 Galvanized— zinc coated. 3.1.2 Aluminized— aluminum coated. 3.2 Abbreviations: 3.2.1 Zn-5A1-MM— zinc-5 % aluminum-mischmetal alloy. 3.2.2 ACSR— aluminum conductor, steel reinforced. 3.2.3 ACSR/GA or ACSR/GA2— reinforced with galvanized steel core wire, coating Class A in accordance with Specification B498/B498M. 3.2.4 ACSR/GC or ACSR/GC2— reinforced with galvanized steel core wire, coating Class C in accordance with Specification B498/B498M. 3.2.5 ACSR/HS or ACSR/GA3— r einforced with highstrength galvanized steel core wire in accordance with Specification B606.
6. Requirement for Wires
3.2.6 ACSR/MA or ACSR/MA2— r einforced with Zn5A1-MM coated steel core wire, coating Class A in accordance with Specification B802/B802M.
6.1 Before stranding, the aluminum wire used shall meet the requirements of Specification B230/B230M.
3.2.7 ACSR/MS or ACSR/MA3— r einforced with highstrength Zn-5A1-MM coated steel core wire in accordance with Specification B803.
6.2 Before stranding, the steel core wire used shall meet the requirements of Specification B498/B498M, B606, B802/ B802M, B803, B957, or B958, whichever is applicable.
3.2.8 ACSR//MA4— reinforced with extra-high-strength Zn5A1-MM coated steel core wire in accordance with Specification B958.
7. Joints 7.1 Electric-butt welds, cold-pressure welds, and electricbutt, cold-upset welds in the finished individual aluminum wires composing the conductor may be made during the stranding process. No weld shall occur within 50 ft [15 m] of a weld in the same wire or in any other wire of the completed conductor (Explanatory Note 3).
3.2.9 ACSR/GA4— reinforced with extra-high-strength galvanized steel core wire in accordance with Specification B957. 3.2.10 ACSR/MA5— reinforced with ultra-high-strength Zn5A1-MM coated steel core wire in accordance with Specification B958.
7.2 There shall be no joints of any kind made in the finished zinc-coated or zinc-5% aluminum-mischmetal alloy coated steel wires.
3.2.11 ACSR/GA5— reinforced with ultra-high-strength galvanized steel core wire in accordance with Specification B957. 4. Classification
8. Lay
4.1 For the purpose of this specification conductors are classified as follows (Explanatory Notes 1 and 2): 4.1.1 Class AA— For bare conductors usually used in overhead lines. These conductors are divided into two types as follows:
8.1 The length of lay of the various layers of aluminum wires in a conductor shall conform to Table 5 (see Explanatory Note 4). 8.2 The length of lay of the various layers of steel wire shall conform to the requirements of B500/B500M.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org. 4 Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov. 5 Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600, Arlington, VA 22209, http://www.aluminum.org.
8.3 The direction of lay of the outside layer of aluminum wires shall be right hand unless otherwise specified in the purchaser order. The direction of lay of the aluminum and steel wires shall be reversed in successive layers. 2
B232/B232M − 11 TABLE 1 Construction Requirements of Aluminum Conductors, Steel Reinforced (ACSR) Size cmil 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
312 000 167 000 156 000 780 000 590 000 590 000 510 500 510 500 431 000 431 000 351 500 351 500 272 000 272 000 272 000 192 500 192 500 113 000 113 000 033 500 033 500 033 500 954 000 954 000 954 000 900 000 900 000 795 000 795 000 795 000 795 000 795 000 795 000 715 500 715 500 715 500 666 600 666 600 636 000 636 000 636 000 636 000 636 000 636 000 605 000 605 000 605 000 605 000 556 500 556 500 556 500 556 500 477 000 477 000 477 000 477 000 397 500 397 500 397 500 397 500 336 400 336 400 336 400 300 000 266 800 266 800 211 600 211 300 203 200 190 800 176 900
Code WordsA
Class
AWG ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 0000 ... ... ... ...
Thrasher Kiwi Bluebird Chukar Falcon Lapwing Parrot Nuthatch Plover Bobolink Martin Dipper Pheasant Bittern Skylark Grackle Bunting Finch Bluejay Curlew Ortolan Tanager Cardinal Rail Catbird Canary Ruddy Mallard Condor Tern Drake Cuckoo Coot Redwing Starling Stilt Gannet Flamingo Egret Scoter Grosbeak Rook Swift Kingbird Teal Wood Duck Squab Peacock Eagle Dove Parakeet Osprey Hen Hawk Flicker Pelican Lark Ibis Brant Chickadee Oriole Linnet Merlin Ostrich Partridge Waxwing Penguin Cochin Brahma Dorking Dotterel
AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA, A AA (HS) AA (HS) AA (HS) AA (HS)
Stranding
Stranding Design Aluminum/ Steel
Number
76/19 72/7 84/19 84/19 54/19 45/7 54/19 45/7 54/19 45/7 54/19 45/7 54/19 45/7 36/1 54/19 45/7 54/19 45/7 54/7 45/7 36/1 54/7 45/7 36/1 54/7 45/7 30/19 54/7 45/7 26/7 24/7 36/1 30/19 26/7 24/7 26/7 24/7 30/19 30/7 26/7 24/7 36/1 18/1 30/19 30/7 26/7 24/7 30/7 26/7 24/7 18/1 30/7 26/7 24/7 18/1 30/7 26/7 24/7 18/1 30/7 26/7 18/1 26/7 26/7 18/1 6/1 12/7 16/19 12/7 12/7
76 72 84 84 54 45 54 45 54 45 54 45 54 45 36 54 45 54 45 54 45 36 54 45 36 54 45 30 54 45 26 24 36 30 26 24 26 24 30 30 26 24 36 18 30 30 26 24 30 26 24 18 30 26 24 18 30 26 24 18 30 26 18 26 26 18 6 12 16 12 12
Aluminum Wires
3
Steel Wires
Diameter, in.
Layers
0.1744 0.1735 0.1602 0.1456 0.1716 0.1880 0.1672 0.1832 0.1628 0.1783 0.1582 0.1733 0.1535 0.1681 0.1880 0.1486 0.1628 0.1436 0.1573 0.1383 0.1515 0.1694 0.1329 0.1456 0.1628 0.1291 0.1414 0.1628 0.1213 0.1329 0.1749 0.1820 0.1486 0.1544 0.1659 0.1727 0.1601 0.1667 0.1456 0.1456 0.1564 0.1628 0.1329 0.1880 0.1420 0.1420 0.1525 0.1588 0.1362 0.1463 0.1523 0.1758 0.1261 0.1354 0.1410 0.1628 0.1151 0.1236 0.1287 0.1486 0.1059 0.1137 0.1367 0.1074 0.1013 0.1217 0.1878 0.1327 0.1127 0.1261 0.1214
4 4 4 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 2 3 3 2 2 3 2 2 2 2 2 2 2 2 2 3 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1
Diameter, Number in. 19 7 19 19 19 7 19 7 19 7 19 7 19 7 1 19 7 19 7 7 7 1 7 7 1 7 7 19 7 7 7 7 1 19 7 7 7 7 19 7 7 7 1 1 19 7 7 7 7 7 7 1 7 7 7 1 7 7 7 1 7 7 1 7 7 1 1 7 19 7 7
0.0814 0.1157 0.0961 0.0874 0.1030 0.1253 0.1003 0.1221 0.0977 0.1189 0.0949 0.1155 0.0921 0.1121 0.1880 0.0892 0.1085 0.0862 0.1049 0.1383 0.1010 0.1694 0.1329 0.0971 0.1628 0.1291 0.0943 0.0977 0.1213 0.0886 0.1360 0.1213 0.1486 0.0926 0.1290 0.1151 0.1245 0.1111 0.0874 0.1456 0.1216 0.1085 0.1329 0.1880 0.0852 0.1420 0.1186 0.1059 0.1362 0.1138 0.1015 0.1758 0.1261 0.1053 0.0940 0.1628 0.1151 0.0961 0.0858 0.1486 0.1059 0.0884 0.1367 0.0835 0.0788 0.1217 0.1878 0.1327 0.0977 0.1261 0.1214
Nominal O.D. of Conductors, Layers in. 2 1 2 2 2 1 2 1 2 1 2 1 2 1 0 2 1 2 1 1 1 0 1 1 0 1 1 2 1 1 1 1 0 2 1 1 1 1 2 1 1 1 0 0 2 1 1 1 1 1 1 0 1 1 1 0 1 1 1 0 1 1 0 1 1 0 0 1 2 1 1
1.802 1.735 1.762 1.602 1.545 1.504 1.505 1.466 1.465 1.427 1.424 1.386 1.382 1.345 1.316 1.338 1.302 1.293 1.259 1.245 1.212 1.186 1.196 1.165 1.140 1.162 1.131 1.140 1.092 1.063 1.108 1.092 1.040 1.081 1.051 1.036 1.014 1.000 1.019 1.019 0.990 0.977 0.930 0.940 0.994 0.994 0.966 0.953 0.953 0.927 0.914 0.879 0.883 0.858 0.846 0.814 0.806 0.783 0.772 0.743 0.741 0.720 0.684 0.680 0.642 0.609 0.563 0.664 0.714 0.631 0.607
Mass, lb/1000 ft 2523 2301 2508 2072 2042 1790 1938 1700 1838 1611 1735 1521 1634 1432 1286 1531 1342 1430 1254 1329 1163 1044 1227.1 1074 964 1158 1013 1233.9 1022 895 1093 1023 803.6 1109.3 983.7 921 916.2 857.9 987.2 995.1 874.2 818.2 642.8 689.9 938.6 946.5 831.3 778.8 870.7 765.2 716.1 603.3 746.4 655.3 613.9 517.3 621.8 546.0 511.4 431.0 526.4 462.0 364.8 412.2 366.9 289.1 290.8 526.8 674.6 475.7 440.9
B232/B232M − 11 TABLE 1 Continued Size cmil 167 159 134 133 110 105 101 83 80 66 66 41 41 33 26
800 000 600 100 800 600 800 690 000 360 360 740 740 090 240
Code WordsA
Class
AWG 000 ... ... 00 ... 0 ... 1 ... 2 2 4 4 5 6
Pigeon Guinea Leghorn Quail Minorca Raven Petrel Robin Grouse Sparate Sparrow Swanate Swan ... Turkey
AA, A AA (HS) AA (HS) AA, A AA (HS) AA, A AA (HS) AA, A AA (HS) AA, A AA, A AA, A AA, A A AA, A
Stranding
Stranding Design Aluminum/ Steel
Number
6/1 12/7 12/7 6/1 12/7 6/1 12/7 6/1 8/1 7/1 6/1 7/1 6/1 6/1 6/1
6 12 12 6 12 6 12 6 8 7 6 7 6 6 6
Aluminum Wires
Steel Wires
Diameter, in.
Layers
0.1672 0.1151 0.1059 0.1489 0.0961 0.1327 0.0921 0.1181 0.1000 0.0974 0.1052 0.0772 0.0834 0.0743 0.0661
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Number 1 7 7 1 7 1 7 1 1 1 1 1 1 1 1
Diameter, in. 0.1672 0.1151 0.1059 0.1489 0.0961 0.1327 0.0921 0.1181 0.1670 0.1299 0.1052 0.1029 0.0834 0.0743 0.0661
Nominal O.D. of Conductors, Layers in. 0 1 1 0 1 0 1 0 0 0 0 0 0 0 0
0.502 0.576 0.530 0.447 0.481 0.398 0.461 0.354 0.367 0.325 0.316 0.257 0.250 0.223 0.198
Mass, lb/1000 ft 230.5 396.3 335.5 182.8 276.3 145.2 253.8 115.0 148.8 106.63 91.2 66.95 57.35 45.51 36.02
A
Code words shown are provided here for information only. These code names apply to Class AA Bare Aluminum Conductors, Steel Reinforced (ACSR) as shown above. They do not apply to Class A products shown in the above table. Conversion factors: 1 cmil = 5.067 E – 0.4 mm2 1 in. = 2.54 E + 01 mm 1 lb/1000ft = 1.488 E + 00 kg/km 1 ft = 3.048 E – 01 m 1 lb = 4.536 E – 01 kg 1 lbf = 4.448 E – 03 kN
9. Construction
default strength of steel shall be regular strength Type GA2 to Specification B498/B498M or MA2 to Specification B802/ B802M.
9.1 ACSR may be constructed using steel core wire with any one of two types of protective coatings. The acceptable core wires are: 9.1.1 Galvanized steel core wires, with coating Classes A or C in accordance with Specification B498/B498M; 9.1.2 High-strength galvanized steel core wire, coating Class A in accordance with Specification B606; 9.1.3 Zn-5A1-MM coated steel core wire, coating Class A, in accordance with Specification B802/B802M; 9.1.4 High-strength Zn-5A1-MM coated steel core wire, coating Class A in accordance with Specification B803; 9.1.5 Extra-high-strength galvanized steel core wire coating Class A in accordance with Specification B957; 9.1.6 Extra-high-strength Zn-5Al-MM coated steel core wire, coating Class A in accordance with Specification B958; 9.1.7 Ultra-high-strength galvanized steel core wire coating Class A in accordance with Specification B957; or 9.1.8 Ultra-high-strength Zn-5Al-MM coated steel core wire, coating Class A in accordance with Specification B958.
9.5 All steel wires shall lie naturally in their position in the stranded core, and where the core is cut, the wire ends shall remain in position or be readily replaced by hand and then remain approximately in position. This requirement also applies to the outer layer of aluminum wires of a conductor. 9.6 The stranded steel core shall be free from waviness and kinks. 9.7 Before stranding, aluminum and steel wires shall have approximately uniform temperatures. 9.8 The diameter of the finished conductor shall be not less than 99 % nor more than 101 % of that shown in Table 1 and Table 2 when measured with a diameter tape between the closing die(s) and the capstan of the strander. 10. A Rated Strength of Conductor 10.1 The rated strength of a completed conductor shall be taken as the aggregate strength of the aluminum and steel components, calculated as follows. The strength contribution of the aluminum wires shall be taken as the percentage, indicated in Table 6, of the sum of the strengths of the 1350-H19 wires, calculated from their specified nominal wire diameter and the appropriate specified minimum average tensile strength given in Specification B230/B230M. The strength contribution of the steel core wires shall be taken as the percentage, according to the number of layers of steel wires, indicated in Table 6, of the sum of the strengths of the steel wires, calculated from their specified nominal wire diameter and the appropriate specified minimum stress at 1 %
9.2 The number and diameter of aluminum and steel wires and the area of cross section of aluminum wires shall conform to the requirements prescribed in Tables 1-5. 9.3 Where compressed stranding is required in order to insulate the conductor properly, one or more aluminum layers of any stranded conductor consisting of 7 wires or more may be slightly compressed. The nominal diameter of the compressed conductor is 3 % below the nominal diameter of noncompressed conductor and the area of cross section after compressing is in accordance with Section 13. 9.4 For “HS” (High Strength) type conductors as denoted in Table 1 and Table 2, unless specified by the customer, the 4
B232/B232M − 11 TABLE 2 Construction Requirements—Aluminum Conductors, Steel Reinforced (ACSR)
Stranding Size, mm2
Class
Stranding Design
Aluminum Wires Number
Steel Wires
Diameter, mm
Layers
Number
Diameter, mm
Layers
Nominal Outside Diameter of Conductors, mm
Mass, kg/km
1250 1250 1250
AA AA AA
84/19 76/19 72/7
84 76 72
4.35 4.58 4.70
4 4 4
19 19 7
2.61 2.14 3.13
2 2 1
47.85 47.34 46.99
4274 4023 3901
1120 1120 1120
AA AA AA
84/19 76/19 72/7
84 76 72
4.12 4.33 4.45
4 4 4
19 19 7
2.47 2.02 2.97
2 2 1
45.31 44.74 44.51
3833 3595 3499
1000 1000 900 900
AA AA AA AA
84/19 72/7 84/19 72/7
84 72 84 72
3.89 4.21 3.69 3.99
4 4 4 4
19 7 19 7
2.33 2.81 2.21 2.66
2 1 2 1
42.77 42.11 40.57 39.9
3416 3132 3073 2812
800 800 710 710
AA AA AA AA
54/19 45/7 54/19 45/7
54 45 54 45
4.34 4.76 4.09 4.48
3 3 3 3
19 7 19 7
2.60 3.17 2.45 2.99
2 1 2 1
39.04 38.07 36.79 35.85
3015 2652 2678 2351
630 630 560 560
AA AA AA AA
54/19 45/7 54/19 45/7
54 45 54 45
3.85 4.22 3.63 3.98
3 3 3 3
19 7 19 7
2.31 2.81 2.18 2.65
2 1 2 1
34.65 33.75 32.68 31.83
2375 2084 2112 1854
500 500 450 450
AA AA AA AA
54/7 45/7 54/7 45/7
54 45 54 45
3.43 3.76 3.26 3.57
3 3 3 3
7 7 7 7
3.43 2.51 3.26 2.38
1 1 1 1
30.87 30.09 29.34 28.56
1889 1656 1706 1492
400 400 400 355 355 355
AA AA AA AA AA AA
30/19 26/7 24/7 30/19 26/7 24/7
30 26 24 30 26 24
4.12 4.43 4.61 3.88 4.17 4.34
2 2 2 2 2 2
19 7 7 19 7 7
2.47 3.45 3.07 2.33 3.24 2.89
2 1 1 2 1 1
28.83 28.07 27.65 27.17 26.4 26.03
1824 1622 1515 1620 1435 1343
315 315 315 315
AA AA AA AA
30/19 26/7 24/7 18/1
30 26 24 18
3.66 3.93 4.09 4.72
2 2 2 2
19 7 7 1
2.20 3.06 2.73 4.72
2 1 1 0
25.64 24.9 24.55 23.6
1443 1277 1194 1014
280 280 280 280
AA AA AA AA
30/7 26/7 24/7 18/1
30 26 24 18
3.45 3.70 3.85 4.45
2 2 2 2
7 7 7 1
3.45 2.88 2.57 4.45
1 1 1 0
24.15 23.44 23.11 22.25
1291 1131 1058 901.0
250 250 250 250
AA AA AA AA
30/7 26/7 24/7 18/1
30 26 24 18
3.26 3.50 3.64 4.21
2 2 2 2
7 7 7 1
3.26 2.72 2.43 4.21
1 1 1 0
22.82 22.16 21.85 21.05
1152 1011 946.0 806.4
224 224 224 224
AA AA AA AA
30/7 26/7 24/7 18/1
30 26 24 18
3.08 3.31 3.45 3.98
2 2 2 2
7 7 7 1
3.08 2.57 2.30 3.98
1 1 1 0
21.56 20.95 20.7 19.9
1029 904.0 849.2 720.7
200 200 200 200
AA AA AA AA
30/7 26/7 24/7 18/1
30 26 24 18
2.91 3.13 3.26 3.76
2 2 2 2
7 7 7 1
2.91 2.43 2.17 3.76
1 1 1 0
20.37 19.81 19.55 18.8
918.2 808.3 757.6 643.2
180 180 180 180
AA AA AA AA
30/7 26/7 24/7 18/1
30 26 24 18
2.76 2.97 3.09 3.57
2 2 2 2
7 7 7 1
2.76 2.31 2.06 3.57
1 1 1 0
19.32 18.81 18.54 17.85
826.0 728.6 681.2 579.9
160 160 160 160 140 140
AA AA AA AA AA AA
30/7 26/7 24/7 18/1 26/7 24/7
30 26 24 18 26 24
2.61 2.80 2.91 3.36 2.62 2.73
2 2 2 2 2 2
7 7 7 1 7 7
2.61 2.18 1.94 3.36 2.04 1.82
1 1 1 0 1 1
18.27 17.74 17.46 16.8 16.6 16.38
738.6 648.0 604.2 513.7 567.4 531.8
5
B232/B232M − 11 TABLE 2 Continued
Stranding Size, mm2
Class
Stranding Design
Aluminum Wires Number
140 125 125 125
AA AA AA AA
100 100 100 90
Steel Wires
Diameter, mm
Layers
Number
Diameter, mm
Layers
Nominal Outside Diameter of Conductors, mm
Mass, kg/km
18/1 26/7 24/7 18/1
18 26 24 18
3.15 2.47 2.58 2.97
2 2 2 2
1 7 7 1
3.15 1.92 1.72 2.97
0 1 1 0
15.75 15.64 15.48 14.85
451.5 503.7 474.9 401.3
AA (HS) AA (HS) AA, A AA (HS)
16/19 12/7 6/1 12/7
16 12 6 12
2.82 3.26 4.61 3.09
1 1 1 1
19 7 1 7
2.44 3.26 4.61 3.09
2 1 0 1
17.84 16.3 13.83 15.45
972.4 734.1 404.8 659.5
80 80 71 63 63 56
AA (HS) AA, A AA (HS) AA (HS) AA, A AA (HS)
12/7 6/1 12/7 12/7 6/1 12/7
12 6 12 12 6 12
2.91 4.12 2.74 2.59 3.66 2.44
1 1 1 1 1 1
7 1 7 7 1 7
2.91 4.12 2.74 2.59 3.66 2.44
1 0 1 1 0 1
14.55 12.36 13.7 12.95 10.98 12.2
584.9 323.3 518.6 463.4 255.2 411.2
50 50 40 40
AA (HS) AA, A AA (HS) AA, A
12/7 6/1 8/1 6/1
12 6 8 6
2.30 3.26 2.52 2.91
1 1 1 1
7 1 1 1
2.30 3.26 4.20 2.91
1 0 0 0
11.5 9.78 9.24 8.73
365.4 202.4 217.9 161.3
31.5 31.5 25 25
AA, A AA, A AA, A AA, A
7/1 6/1 7/1 6/1
7 6 7 6
2.39 2.59 2.13 2.30
1 1 1 1
1 1 1 1
3.19 2.59 2.84 2.30
0 0 0 0
7.97 7.77 7.1 6.9
148.4 127.8 117.8 100.8
20 20 16 12.5
AA, A AA, A AA, A AA, A
7/1 6/1 6/1 6/1
7 6 6 6
1.91 2.06 1.84 1.63
1 1 1 1
1 1 1 1
2.55 2.06 1.84 1.63
0 0 0 0
6.37 6.18 5.52 4.89
94.80 80.83 64.49 50.61
extension given in Specification B498/B498M, B606, B802/ B802M, or B803, whichever is applicable.
12.2 In the calculation of the electrical resistance of a conductor, the zinc-coated or Zn-5A1-MM coated steel core wires may be included.
10.2 Rated strength and breaking strength values shall be rounded to three significant figures, in the final value only, in accordance with the rounding method of Practice E29.
13. Variation in Area 13.1 The area of cross section of the aluminum wires of a conductor shall be not less than 98 % of the area specified. Unless otherwise specified by the purchaser, the manufacturer may have the option of determining the cross-sectional area by either of the following methods, except that in case of question regarding area compliance, the method of 13.1.2 shall be used: 13.1.1 The area of cross section may be determined by calculations from diameter measurements, expressed to four decimal places, of the component aluminum wires at any point when measured perpendicularly to their axes. 13.1.2 The area of cross section of the aluminum wires of a conductor may be determined by Test Method B263. In applying that test method the increment in mass per unit length resulting from stranding may be the applicable value specified in 12.1 or may be calculated from the measured component dimensions of the sample under test. In case of question regarding area compliance, the actual mass per unit length increment due to stranding shall be calculated.
10.3 Rated strength of various constructions are given in Table 3 or Table 4. 11. Density 11.1 For the purpose of calculating mass per unit length, cross sections, etc., the density of aluminum 1350 shall be taken as 2705 kg/m3 [0.0975 lb/in.3] at 20°C (Explanatory Note 5). 11.2 For the purpose of calculating mass per unit length, cross sections, etc., the density of galvanized or aluminized steel wire shall be taken as 7780 kg/m3 [0.281 lb/in. 3] at 20°C. 12. Mass Per Unit Length and Electrical Resistance 12.1 The mass per unit length and electrical resistance of a unit length of stranded conductor are a function of the length of lay. The approximate mass and electrical resistance may be determined using the standard increments shown in Table 6. When greater accuracy is desired, the increment based on the specific lay of the conductor may be calculated (Explanatory Note 6).
14. Workmanship, Finish, and Appearance 14.1 The conductor shall be clean and free of imperfections not consistent with good commercial practice. 6
B232/B232M − 11 TABLE 3 Rated Strength Aluminum Conductors, Steel Reinforced (ACSR) Size cmil 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
312 000 167 000 156 000 780 000 590 000 590 000 510 000 510 000 431 000 431 000 351 000 351 000 272 000 272 000 272 000 192 500 192 500 113 000 113 000 033 500 033 500 033 500 954 000 954 000 954 000 900 000 900 000 795 000 795 000 795 000 795 000 795 000 795 000 715 500 715 500 715 500 666 600 666 600 636 000 636 000 636 000 636 000 636 000 636 000 605 000 605 000 605 000 605 000 556 500 556 500 556 500 556 500 477 000 477 000 477 000 477 000 397 500 397 500 397 500 397 500 336 400 336 400 336 400 300 000 266 800 266 800 211 600 211 300 203 200 190 800 176 900 167 800
AWG ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 0000 ... ... ... ... 000
Class
Stranding Design Aluminum/Steel
ACSR/GA2 ACSR/MA2, kips
ACSR/GC2 kips
ACSR/GA3 ACSR/MA3, kips
ACSR/GA4 ACSR/MA4, kips
ACSR/GA5, ACSR/MA5, kips
AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA, A AA (HS) AA (HS) AA (HS) AA (HS) AA, A
76/19 72/7 84/19 84/19 54/19 45/7 54/19 45/7 54/19 45/7 54/19 45/7 54/19 45/7 36/1 54/19 45/7 54/19 45/7 54/7 45/7 36/1 54/7 45/7 36/1 54/7 45/7 30/19 54/7 45/7 26/7 24/7 36/1 30/19 26/7 24/7 26/7 24/7 30/19 30/7 26/7 24/7 36/1 18/1 30/19 30/7 26/7 24/7 30/7 26/7 24/7 18/1 30/7 26/7 24/7 18/1 30/7 26/7 24/7 18/1 30/7 26/7 18/1 26/7 26/7 18/1 6/1 12/7 16/19 12/7 12/7 6/1
56.7 49.8 60.3 51.0 54.5 42.2 51.7 40.1 49.1 38.3 46.3 36.2 43.6 34.1 26.4 41.9 32.0 39.1 29.8 36.6 27.7 21.4 33.8 25.9 19.8 31.9 24.4 38.4 28.2 22.1 31.5 27.9 16.8 34.6 28.4 25.5 26.4 23.7 31.5 30.4 25.2 22.6 13.8 15.7 30.0 28.9 24.3 21.6 27.8 22.6 19.8 13.7 23.8 19.5 17.2 11.8 20.3 16.3 14.6 9.94 17.3 14.1 8.68 12.7 11.3 6.88 8.35 20.7 28.4 18.7 17.3 6.62
54.8 48.4 57.7 48.9 51.6 40.5 48.9 38.5 46.4 36.9 43.8 34.8 41.2 32.8 26.0 39.7 30.7 37.0 28.7 34.6 26.6 21.1 32.0 24.9 19.5 30.2 23.5 35.8 26.6 21.2 29.6 26.4 16.5 32.2 26.6 24.1 24.8 22.4 29.4 28.7 23.6 21.4 13.5 15.3 28.0 27.3 22.8 20.4 25.8 21.2 18.7 13.4 22.1 18.4 16.2 11.5 18.9 15.3 13.9 9.7 16.2 13.3 8.4 12.0 10.6 6.7 7.95 18.9 25.8 17.0 15.8 6.30
58.5 51.3 62.8 53.1 57.5 43.9 54.5 41.6 51.7 39.8 48.8 37.6 46.0 35.4 27.0 44.1 33.2 41.2 31.0 38.6 28.8 21.9 35.7 26.9 20.3 33.7 25.4 41.1 29.7 22.9 33.5 29.5 17.2 36.9 30.1 26.9 28.0 25.0 33.6 33.2 26.8 23.9 14.0 16.3 32.0 31.6 25.8 22.7 29.7 24.0 20.9 14.3 25.5 20.7 18.1 12.3 21.7 17.2 15.4 10.4 18.5 14.9 8.96 13.4 11.9 7.1 9.01 22.6 31.1 20.4 18.9 7.15
59.9 52.3 64.8 54.7 59.7 45.1 56.6 42.8 53.7 41.0 50.7 38.7 47.7 36.4 27.4 45.7 34.1 42.7 31.9 40.2 29.6 22.3 37.1 27.7 20.6 35.0 26.1 43.1 30.9 23.5 34.9 30.6 17.4 38.7 31.4 27.9 29.3 26.0 35.2 34.9 27.9 24.8 14.2 16.7 33.5 33.2 26.9 23.6 31.2 25.0 21.7 14.6 26.8 21.6 18.8 12.6 22.8 18.0 16.0 10.6 19.4 15.5 9.17 14.0 12.4 7.27 9.41 24.0 33.1 21.6 20.1 7.46
60.4 52.7 65.4 55.2 60.4 45.5 57.3 43.2 54.4 41.3 51.3 39 48.3 36.7 27.6 46.3 34.4 43.2 32.2 40.7 29.8 22.4 37.6 27.9 20.7 35.4 26.3 43.7 31.3 23.7 35.4 31.0 17.5 39.3 31.9 28.3 29.7 26.3 35.8 35.4 28.3 25.1 14.3 16.9 34.0 33.7 27.3 23.9 31.7 25.3 22.0 14.8 27.2 21.9 19.0 12.7 23.1 18.2 16.2 10.7 19.7 15.7 9.24 14.2 12.6 7.32 9.55 24.4 33.7 22.1 20.4 7.57
7
B232/B232M − 11 TABLE 3 Continued Size cmil 159 134 133 110 105 101 83 80 66 66 41 41 33 26
000 600 100 800 600 800 690 000 360 360 740 740 090 240
AWG ... ... 00 ... 0 ... 1 ... 2 2 4 4 5 6
Class
Stranding Design Aluminum/Steel
ACSR/GA2 ACSR/MA2, kips
ACSR/GC2 kips
ACSR/GA3 ACSR/MA3, kips
ACSR/GA4 ACSR/MA4, kips
ACSR/GA5, ACSR/MA5, kips
AA (HS) AA (HS) AA, A AA (HS) AA, A AA (HS) AA, A AA (HS) AA, A AA, A AA, A AA, A A AA, A
12/7 12/7 6/1 12/7 6/1 12/7 6/1 8/1 7/1 6/1 7/1 6/1 6/1 6/1
16.0 13.6 5.30 11.3 4.38 10.4 3.55 5.20 3.64 2.85 2.36 1.86 1.49 1.19
14.6 12.4 5.05 10.3 4.12 9.46 3.34 4.89 3.39 2.68 2.20 1.76 1.41 1.12
17.4 14.8 5.72 12.2 4.65 11.2 3.76 5.73 3.90 3.01 2.52 1.97 1.57 1.26
18.4 15.7 5.97 13.0 4.85 11.9 3.92 6.04 4.09 3.14 2.64 2.05 1.64 1.30
18.8 16.0 6.05 13.2 4.91 12.1 3.98 6.15 4.15 3.18 2.68 2.07 1.66 1.32
16.2 All inspections and tests shall be made at the place of manufacture unless otherwise especially agreed upon between the manufacturer and the purchaser at the time of the purchase.
15. Mechanical and Electrical Tests 15.1 Tests for mechanical and electrical properties of aluminum wires shall be made before stranding (Explanatory Note 7).
16.3 The manufacturer shall afford the inspector representing the purchaser all reasonable access to manufacturer’s facilities to satisfy him that the material is being furnished in accordance with this specification.
15.2 All aluminum wires composing the conductors shall be capable of meeting the bending properties stated in Specification B230/B230M after stranding. 15.3 Routine production testing after stranding is not required. However, when such tests are requested by the purchaser and agreed to by the manufacturer at the time of placing the order (or made for other reasons) aluminum wires removed from the completed conductor shall have tensile strengths of not less than 95 % of the minimum tensile strength specified for the wire before stranding. The electrical resistivity shall meet the minimum resistivity specified for the wire before stranding. Elongation tests may be made for information purposes only and no minimum values are assigned (Explanatory Note 7). The frequency of these tests shall be agreed upon between the purchaser and the manufacturer.
17. Packaging and Package Marking
15.4 Tests for demonstration of rated strength of the completed conductor are not required by this specification but may be made if agreed upon between the manufacturer and the purchaser at the time of placing an order. If tested, the breaking strength of the completed conductor shall be not less than the rated strength if failure occurs in the free length at least 1 in. [25 mm] beyond the end of either gripping device, or shall be not less than 95 % of the rated strength if failure occurs inside, or within 1 in. [25 mm] of the end of, either gripping device (Explanatory Note 8).
NOTE 1—Multiple lengths per package are allowable only when the bare conductor is intended for re-manufacture, such as adding a covering or insulation. In such cases, the position of each end of a length is to be clearly marked and the length of each portion shall be shown on the tag attached to the end of the conductor.
17.1 Package sizes and kind of package, reels or coils, shall be agreed upon between the manufacturer and the purchaser at the time of placing the order. Recommended package sizes are shown in Table 7 or Table 8 (Explanatory Note 9). 17.2 There shall be only one length of conductor on a reel. (See Table 9.) 17.3 The conductors shall be protected against damage in ordinary handling and shipping. If heavy wood lagging is required, it shall be specified by the purchaser at the time of placing the purchase order.
17.4 The net mass, length, size, kind of conductors, stranding, type of coating, class of zinc or Zn-5A1-MM coating (if used), and any other necessary identification shall be marked on a tag attached to the end of the conductor inside the package. This same information, together with the purchase order number, the manufacturer’s serial number (if any), and all shipping marks and other information required by the purchaser shall appear on the outside of each package.
15.5 Tests for all properties of zinc-coated, or Zn-5A1-MM coated steel wires shall be made before stranding (Explanatory Note 7).
18. Keywords
16. Inspection
18.1 aluminum conductor; concentric-lay-stranded aluminum conductor; electrical conductors; electrical conductors, aluminum; steel-reinforced conductors; stranded aluminum conductors
16.1 Unless otherwise specified in the contract or purchase order, the manufacturer shall be responsible for the performance of all inspection and test requirements specified.
8
B232/B232M − 11 TABLE 4 Rated Strength—Aluminum Conductor, Steel Reinforced (ACSR) Rated Strength (by type of steel core wire) Size, mm2
Class
Stranding Design
ACSR/GA2 ACSR/MA2, kN
ACSR/GC2 kN
ACSR/GA3 ACSR/MA3, kN
ACSR/GA4 ACSR/MA4 kN
ACSR/GA5 ACSR/MA5, kN
1250 1250 1250
AA AA AA
84/19 76/19 72/7
306 269 250
293 260 242
319 278 257
329 284 262
332 286 264
1120 1120 1120
AA AA AA
84/19 76/19 72/7
275 240 226
263 232 219
286 248 232
295 254 237
298 256 238
1000 1000 900 900
AA AA AA AA
84/19 72/7 84/19 72/7
245 202 226 181
234 196 217 176
254 208 236 186
262 212 243 190
265 213 245 192
800 800 710 710
AA AA AA AA
54/19 45/7 54/19 45/7
240 186 213 167
227 179 201 160
252 193 224 173
262 199 233 178
265 201 236 180
630 630 560 560
AA AA AA AA
54/19 45/7 54/19 45/7
189 148 173 132
179 142 164 126
199 153 182 136
207 158 189 140
209 159 191 142
500 500 450 450
AA AA AA AA
54/7 45/7 54/7 45/7
154 118 139 108
145 113 131 104
163 122 147 112
169 125 153 115
171 127 155 116
400 400 400 355 355 355
AA AA AA AA AA AA
30/19 26/7 24/7 30/19 26/7 24/7
170 139 123 151 123 111
158 131 116 140 115 105
181 148 130 161 131 117
190 154 135 169 136 121
193 157 137 171 138 123
315 315 315 315
AA AA AA AA
30/19 26/7 24/7 18/1
138 110 98.7 68.0
128 103 93.2 66.3
147 117 104 70.8
154 122 108 72.7
156 123 109 73.2
280 280 280 280
AA AA AA AA
30/7 26/7 24/7 18/1
122 100 87.5 60.4
113 94.1 82.6 58.9
131 106 92.0 63.0
137 111 95.7 64.6
140 112 96.9 65.1
250 250 250 250
AA AA AA AA
30/7 26/7 24/7 18/1
109 89.5 79.4 54.1
101 84.1 75.0 52.7
117 94.6 83.4 56.4
123 98.7 86.7 57.8
125 100 87.8 58.2
224 224 224 224
AA AA AA AA
30/7 26/7 24/7 18/1
97.4 80.0 72.0 48.3
90.4 75.1 68.1 47.1
104 84.5 74.8 50.4
109 88.2 77.8 51.7
111 89.4 78.7 52.0
200 200 200 200
AA AA AA AA
30/7 26/7 24/7 18/1
89.7 71.5 64.2 43.1
83.4 67.2 60.7 42.1
95.5 75.6 67.7 45.0
100 78.8 70.2 46.1
102 79.9 70.9 46.4
180 180 180 180
AA AA AA AA
30/7 26/7 24/7 18/1
80.7 65.4 57.8 40.4
75.0 61.4 54.7 39.1
85.9 69.0 60.9 41.4
90.1 72.0 63.2 42.4
91.5 73 63.8 42.7
160 160 160 160 140 140 140
AA AA AA AA AA AA AA
30/7 26/7 24/7 18/1 26/7 24/7 18/1
72.9 58.9 52.0 35.8 52.2 46.4 31.5
67.9 55.4 49.2 34.6 49.2 44.0 30.4
77.6 62.4 54.8 37.0 55.3 48.9 32.5
81.3 64.9 56.8 37.8 57.5 50.6 33.3
82.6 65.7 57.4 38.1 58.2 51.1 33.5
9
B232/B232M − 11 TABLE 4 Continued Rated Strength (by type of steel core wire) Size, mm2
Class
Stranding Design
125 125 125
AA AA AA
26/7 24/7 18/1
100 100 100 90
AA (HS) AA (HS) AA, A AA (HS)
16/19 12/7 6/1 12/7
80 80 71 63 63 56
AA (HS) AA, A AA (HS) AA (HS) AA, A AA (HS)
50 50 40 40
AA (HS) AA, A AA (HS) AA, A
31.5 31.5 25 25 20 20 16 12.5
ACSR/GA2 ACSR/MA2, kN
ACSR/GC2 kN
ACSR/GA3 ACSR/MA3, kN
ACSR/GA4 ACSR/MA4 kN
ACSR/GA5 ACSR/MA5, kN
46.9 41.5 28.8
44.2 39.3 27.9
49.6 43.6 29.7
51.6 45.2 30.4
52.2 45.7 30.6
123 85.9 34.6 77.2
111 78.0 33.0 70.1
133 93.8 37.3 84.2
142 99.4 39.1 89.3
145 101 39.6 91.0
12/7 6/1 12/7 12/7 6/1 12/7
70.6 27.6 62.9 56.2 22.1 50.2
64.4 26.4 57.4 51.3 21.1 45.8
76.4 29.8 68.1 60.8 23.8 54.3
81.1 31.2 72.3 64.6 24.9 57.6
82.7 31.6 73.6 65.8 25.3 58.7
12/7 6/1 8/1 6/1
45.4 18.1 22.5 14.9
41.5 17.0 21.1 14.0
48.2 19.2 24.7 15.7
51.2 20.0 26.2 16.4
52.1 20.3 26.6 16.6
AA, A AA, A AA, A AA, A
7/1 6/1 7/1 6/1
15.1 11.9 12.3 9.53
14.0 11.2 11.5 9.09
16.2 12.6 13.1 10.1
16.9 13.1 13.8 10.5
17.2 13.3 14.0 10.6
AA, A AA, A AA, A AA, A
7/1 6/1 6/1 6/1
10.0 7.84 6.33 4.97
9.34 7.39 5.97 4.69
10.7 8.29 6.69 5.25
11.2 8.61 6.94 5.45
11.4 8.70 7.02 5.51
TABLE 5 Lay Factors for Aluminum Conductors, Steel-Reinforced, Concentric-Lay-Stranded A Ratio of Length of Lay of a Layer to Nominal Outside Diameter of That Layer Stranding Class
A AA
A
Aluminum Wire Layers
Stranding First (Outside) 6/1, 7/1 76/19, 84/19 72/7 54/19 54/7, 45/7 30/19 30/7, 26/7, 24/7 18/1 16/19 12/7 6/1, 7/1, 8/1
Second
Third
Fourth (Inside)
Min
Preferred
Max
Min
Preferred
Max
Min
Max
Min
Max
8 10 10 10 10 10 10
... 11 11 11 11 11 11
16 13 13 13 13 13 13
... 10 10 10 10 10 10
... 13 13 13 13 13 13
... 16 16 16 16 16 16
... 10 10 10 10 ... ...
... 17 17 17 17 ... ...
... 10 10 ... ... ... ...
... 17 17 ... ... ... ...
10 10 10 12
11 12.5 12.5 13
13 14.5 14.5 14.5
10 ... ... ...
13 ... ... ...
16 ... ... ...
... ... ... ...
... ... ... ...
... ... ... ...
... ... ... ...
See Specification B500/B500M for the lay factors of the steel wire layers.
10
B232/B232M − 11 TABLE 6 Standard Increments and Rating Factors for Mass Per Unit Length, Resistivity, and Rated Strength Determination Stranding Design Aluminum/ Steel
Standard Increments Due to Stranding (for mass per unit length and resistivity) Increase
Rating Factors (for rated strength)
Aluminum (%)
Steel (%)
Aluminum (%)
Steel (%)
6/1 7/1 8/1 18/1 36/1
1.5 1.5 2.0 2.0 2.0
0 0 0 0 0
96 96 96 93 91
96 96 96 96 96
12/7 24/7 26/7 30/7 42/7
2.5 2.5 2.5 2.75 2.5
0.4 0.4 0.4 0.4 0.4
96 93 93 93 91
96 96 96 96 96
45/7 48/7 54/7 72/7
2.5 2.5 2.5 3.0
0.4 0.4 0.4 0.4
91 91 91 90
96 96 96 96
16/19 30/19 54/19 76/19 84/19
2.5 2.75 3.0 3.0 3.0
0.6 0.6 0.6 0.6 0.6
96 93 91 90 90
93 93 93 93 93
11
B232/B232M − 11 TABLE 7 Packaging Information Recommended Reel Sizes, Shipping Lengths and Net Masses
Size cmil 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
312 000 167 000 156 000 780 000 590 000 590 000 510 000 510 000 431 000 431 000 351 000 351 000 272 000 272 000 272 000 192 500 192 500 113 000 113 000 033 500 033 500 033 500 954 000 954 000 954 000 900 000 900 000 795 000 795 000 795 000 795 000 795 000 795 000 715 500 715 500 715 500 666 600 666 600 636 000 636 000 636 000 636 000 636 000 636 000
AWG . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
336 400 336 400 336 400
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
300 000 266 800 266 800
... ... ...
605 605 605 605 556 556 556 556
000 000 000 000 500 500 500 500
477 477 477 477
000 000 000 000
397 397 397 397
500 500 500 500
Reel Types
Stranding Design Aluminum/ Steel
Reel SizeA
76/19 72/7 84/19 84/19 54/19 45/7 54/19 45/7 54/19 45/7 54/19 45/7 54/19 45/7 36/1 54/19 45/7 54/19 45/7 54/7 45/7 36/1 54/7 45/7 36/1 54/7 45/7 30/19 54/7 45/7 26/7 24/7 36/1 30/19 26/7 24/7 26/7 24/7 30/19 30/7 26/7 24/7 36/1 18/1 ... 30/19 30/7 26/7 24/7 30/7 26/7 24/7 18/1 ... 30/7 26/7 24/7 18/1 ... 30/7 26/7 24/7 18/1 ... 30/7 26/7 18/1
96.60 96.60 96.60 96.60 90.45 90.45 90.45 90.45 90.45 90.45 90.45 90.45 90.45 90.45 84.45 90.45 90.45 90.45 90.45 90.45 90.45 84.45 90.45 90.45 84.45 90.45 90.45 84.45 90.45 90.45 84.36 84.36 84.45 84.45 84.36 84.36 84.36 84.36 84.45 ... 84.36 84.36 ... ... ... 84.45 ... 84.36 84.36 ... 84.36 84.36 ... ... ... 84.36 84.36 ... ... ... 84.36 84.36 ... ... ... 84.36 ...
26/7 26/7 18/1
... ... ...
RMT Length on Reel, ft 7000 7000 7500 9200 5740 6000 6040 6320 6375 6665 6755 7060 7175 7500 6020 7650 8000 8200 8570 8870 9230 7420 9600 10 000 8030 10 180 10 590 7980 11 520 12 000 6940 6400 9640 8880 7710 7100 8280 7630 9980 ... 8670 8000 ... ... ... 10 490 ... 9110 8410 ... 9910 9140 ... ... ... 11 560 10 660 ... ... ... 13 870 12 790 ... ... ... 16 390 ... ... ... ...
RM
NR
Net Mass, lb
Reel SizeA
Length on Reel, ft
Net Mass, lb
Reel SizeA
Length on Reel, ft
Net Mass, lb
17 660 16 100 18 810 19 060 11 720 10 740 11 710 10 740 11 720 10 730 11 720 10 740 11 720 10 740 7 740 11 720 10 740 11 730 10 740 11 790 10 730 7750 11 780 10 740 7740 11 790 10 730 9850 11 780 10 740 7590 6540 7750 9850 7580 6540 7590 6550 9850 ... 7580 6550 ... ... ... 9850 ... 7570 6550 ... 7580 6550 ... ... ... 7580 6540 ... ... ... 7570 6540 ... ... ... 7570 ...
... ... ... ... 68.38 68.38 68.38 68.38 68.38 68.38 68.38 68.38 68.38 68.38 ... 68.38 68.38 68.38 68.38 68.38 68.38 ... 68.38 68.38 ... 68.38 68.38 66.32 68.38 68.38 ... ... ... 66.32 ... ... ... ... 66.32 66.32 ... ... 66.32 66.32 ... 66.32 66.32 ... ... 66.32 ... ... 66.32 ... 66.32 ... ... 66.32 ... 66.32 ... ... 66.32 ... 66.32 ... 66.32
... ... ... ... 2870 3000 3020 3160 3190 3335 3375 3530 3585 3750 ... 3825 4000 4100 4285 4435 4615 ... 4800 5000 ... 5090 5295 3990 5760 6000 ... ... ... 4440 ... ... ... ... 4990 5005 ... ... 6025 6020 ... 5245 5245 ... ... 5700 ... ... 6890 ... 6650 ... ... 8030 ... 7980 ... ... 9630 ... 9430 ... 11 390
... ... ... ... 5860 5370 5850 5370 5860 5370 5860 5370 5860 5370 ... 5860 5370 5860 5370 5890 5370 ... 5890 5370 ... 5890 5360 4920 5890 5370 ... ... ... 4930 ... ... ... ... 4930 4980 ... ... 3870 4150 ... 4920 4960 ... ... 4960 ... ... 4160 ... 4960 ... ... 4150 ... 4960 ... ... 4150 ... 4960 ... 4150
... ... ...
... ... 66.32
... ... 14 360
... ... 4150
... ... ... ... ... 60.28 ... 60.28 ... 60.28 ... 60.28 ... 60.28 ... ... 60.28 ... 60.28 ... 60.28 ... ... 60.28 ... ... 60.28 ... ... 60.28 60.28 60.28 ... ... 60.28 60.28 60.28 60.28 ... ... 60.28 60.28 ... 48.28 42.28 ... ... 60.28 60.28 ... 60.28 60.28 48.28 42.28 ... 60.28 60.28 48.28 42.28 ... 60.28 60.28 48.28 42.28 ... 60.28 48.28 42.28 60.28 60.28 48.28
... ... ... ... ... 2000 ... 2110 ... 2220 ... 2355 ... 2500 ... ... 2665 ... 2855 ... 3075 ... ... 3335 ... ... 3530 ... ... 4000 3470 3200 ... ... 3855 3550 4140 3815 ... ... 4335 4000 ... 3010 2005 ... ... 4555 4205 ... 4955 4570 3445 2295 ... 5780 5330 4015 2675 ... 6935 6395 4815 3210 ... 8195 5695 3795 9190 10 330 7180
... ... ... ... ... 3580 ... 3590 ... 3580 ... 3580 ... 3580 ... ... 3580 ... 3580 ... 3580 ... ... 3580 ... ... 3580 ... ... 3580 3790 3270 ... ... 3790 3270 3790 3270 ... ... 3790 3270 ... 2080 1380 ... ... 3790 3270 ... 3790 3270 2080 1380 ... 3790 3270 2080 1380 ... 3790 3270 2080 1380 ... 3790 2080 1380 3790 3790 2080
12
B232/B232M − 11 TABLE 7 Continued Size cmil
211 600
211 203 190 176 167
300 200 800 900 800
159 000 134 600 133 100
110 800 105 600
101 800 83 690
80 000 66 360 66 360
41 740 41 740 26 240 A
Reel Types
AWG
Stranding Design Aluminum/ Steel
Reel SizeA
Length on Reel, ft
Net Mass, lb
Reel SizeA
Length on Reel, ft
Net Mass, lb
0000
6/1
...
...
...
...
...
...
... ... ... ... 000 ... ... ... ... 00 ... ... ... 0 ... ... ... 1 ... ... ... 2 ... 2 ... ... 4 ... 4 6
12/7 16/19 12/7 12/7 6/1 ... ... 12/7 12/7 6/1 ... ... 12/7 6/1 ... ... 12/7 6/1 ... ... 8/1 7/1 ... 6/1 ... ... 7/1 ... 6/1 6/1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
... 66.32 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
... 7875 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
... 5310 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
RMT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
See Table 9 for dimensions of reels.
13
NR Reel SizeA
Length on Reel, ft
Net Mass, lb
42.28 42.28 36.22 30.22 48.28 ... 48.28 48.28 42.28 36.22 30.22 48.28 48.28 42.28 36.22 30.22 48.28 42.28 36.22 30.22 48.28 42.28 36.22 30.22 36.22 38.22 30.22 42.28 36.22 30.22 38.22 30.22 36.22 30.22
4785 6080 3044 2025 6020 ... 6665 7195 7670 3835 2560 8000 9450 9670 4835 3220 11 480 12 190 6095 4060 12 500 15 360 7680 5120 7580 11 250 5625 19 390 9695 6465 17 910 8955 15 420 16 340
1380 1770 890 590 3170 ... 3170 3170 1770 880 590 3170 3170 1770 880 590 3170 1770 880 590 3170 1770 880 590 1130 1200 600 1770 880 590 1200 600 880 590
B232/B232M − 11 TABLE 8 Packaging Information: Recommended Reel Sizes, Shipping Lengths, and Net Masses Reel Designation Size, mm2
Class
Stranding Design
Reel Designation RMT
Reel Designation RM
Reel SizeA
Length on Reel, m
Net Mass of Conductors, kg
Reel SizeA
Length on Reel, m
Net Mass of Conductors, kg
Reel Designation NR Reel SizeA
Length on Reel, m
Net Mass of Conductors, kg
1250 1250 1250
AA AA AA
84/19 76/19 72/7
96.60 96.60 96.60
2010 1975 1875
8590 7945 7315
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
1120 1120 1120
AA AA AA
84/19 76/19 72/7
96.60 96.60 96.60
2240 2210 2090
8585 7945 7310
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
1000 1000 900 900
AA AA AA AA
84/19 72/7 84/19 72/7
96.60 96.60 96.60 96.60
2515 2335 2795 2600
8590 7310 8590 7310
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
800 800 710 710
AA AA AA AA
54/19 45/7 54/19 45/7
90.45 90.45 90.45 90.45
1655 1840 1860 2075
4990 4880 4980 4880
68.38 68.38 68.38 68.38
880 920 995 1040
2655 2440 2665 2445
... 60.28 ... 60.28
... 615 ... 690
... 1630 ... 1620
630 630 560 560
AA AA AA AA
54/19 45/7 54/19 45/7
90.45 90.45 90.45 90.45
2100 2340 2360 2630
4985 4875 4985 4875
68.38 68.38 68.38 68.38
1120 1170 1260 1315
2660 2440 2660 2440
... 60.28 ... 60.28
... 780 ... 875
... 1625 ... 1620
500 500 450 450
AA AA AA AA
54/19 45/7 54/7 45/7
90.45 90.45 90.45 90.45
2655 2945 2940 3265
5015 4875 5015 4870
68.38 68.38 68.38 68.38
1415 1475 1570 1635
2670 2440 2680 2440
... 60.28 ... 60.28
... 980 ... 1090
... 1625 ... 1625
400 400 400 355 355 355
AA AA AA AA AA AA
30/19 26/7 24/7 30/19 26/7 24/7
84.45 84.36 84.36 84.45 84.36 84.36
2450 2125 1960 2760 2400 2210
4470 3445 2970 4470 3445 2970
66.32 ... ... 66.32 ... ...
1225 ... ... 1380 ... ...
2235 ... ... 2235 ... ...
... 60.28 60.28 ... 60.28 60.28
... 1060 980 ... 1200 1105
... 1720 1485 ... 1720 1485
315 315 315 315
AA AA AA AA
30/19 26/7 24/7 18/1
84.45 84.36 84.36 ...
3100 2700 2485 ...
4470 3445 2970 ...
66.32 ... ... 66.32
1550 ... ... 1875
2235 ... ... 1900
... 60.28 60.28 48.28 42.28
... 1345 1245 940 625
... 1715 1485 955 635
280 280 280 280
AA AA AA AA
30/7 26/7 24/7 18/1
... 84.36 84.36 ...
... 3045.0 2805.0 ...
... 3445 2970 ...
66.32 ... ... 66.32
1745 ... ... 2110
2250 ... ... 1900
... 60.28 60.28 48.28 42.28
... 1520 1405 1060 705
... 1720 1485 955 635
250 250 250 250
AA AA AA AA
30/7 26/7 24/7 18/1
... 84.36 84.36 ...
... 3410.0 3140.0 ...
... 3450 2970 ...
66.32 ... ... 66.32
1955 ... ... 2355
2255 ... ... 1900
... 60.28 60.28 48.28 42.28
... 1700 1570 1180 790
... 1720 1485 950 635
224 224 224 224
AA AA AA AA
30/7 26/7 24/7 18/1
... 84.36 84.36 ...
... 3810.0 3500.0 ...
... 3445 2970 ...
66.32 ... ... 66.32
2190 ... ... 2635
2255 ... ... 1900
... 60.28 60.28 48.28 42.28
... 1905 1750 1320 880
... 1720 1485 950 635
200 200 200 200
AA AA AA AA
30/7 26/7 24/7 18/1
... 84.36 84.36 ...
... 4265.0 3920.0 ...
... 3445 2970 ...
66.32 ... ... 66.32
2455 ... ... 2955
2255 ... ... 1900
... 60.28 60.28 48.28 42.28
... 2130 1960 1480 985
... 1720 1485 950 635
180 180 180 180
AA AA AA AA
30/7 26/7 24/7 18/1
... 84.36 84.36 ...
... 4725.0 4360.0 ...
... 3445 2970 ...
66.32 ... ... 66.32
2730 ... ... 3280
2255 ... ... 1900
... 60.28 60.28 48.28 42.28
... 2360 2180 1645 1095
... 1720 1485 955 635
14
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
B232/B232M − 11 TABLE 8 Continued Reel Designation Size, mm2
Class
Stranding Design
Reel Designation RMT
Reel Designation RM
Reel Designation NR
Reel SizeA
Length on Reel, m
Net Mass of Conductors, kg
Reel SizeA
Length on Reel, m
Net Mass of Conductors, kg
Reel SizeA
Length on Reel, m
Net Mass of Conductors, kg
160 160 160 160
AA AA AA AA
30/7 26/7 24/7 18/1
... 84.36 84.36 ...
... 5315.0 4915.0 ...
... 3445 2970 ...
66.32 ... ... 66.32
3050 ... ... 3705
2255 ... ... 1905
... 60.28 60.28 48.28 42.28
... 2655 2460 1855 1240
... 1720 1485 955 635
140 140 140
AA AA AA
26/7 24/7 18/1
... ... ...
... ... ...
... ... ...
... ... 66.32
... ... 4210
... ... 1900
60.28 60.28 48.28 42.28
3035 2790 2110 1405
1720 1485 955 635
125 125 125
AA AA AA
26/7 24/7 18/1
... ... ...
... ... ...
... ... ...
... ... 66.32
... ... 4735
... ... 1900
60.28 60.28 48.28 42.28
3415 3125 2375 1585
1720 1485 955 635
100 100 100
AA (HS) AA (HS) AA, A
16/19 12/7 6/1
... ... ...
... ... ...
... ... ...
66.32 ... ...
2480 ... ...
2410 ... ...
... ... 42.28 36.22 30.22
... ... 1990 990 665
... ... 805 400 270
90 80 80
AA (HS) AA (HS) AA, A
12/7 12/7 6/1
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
... ... 42.28 36.22 30.22
... ... 2490 1235 835
... ... 805 400 270
71 63 63
AA (HS) AA (HS) AA, A
12/7 12/7 6/1
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
... ... 42.28 36.22 30.22
... ... 3155 1565 1060
... ... 805 400 270
56 50 50
AA (HS) AA (HS) AA, A
12/7 12/7 6/1
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
... ... 42.28 36.22 30.22
... ... 3975 1975 1335
... ... 805 400 270
40 40
AA (HS) AA, A
8/1 6/1
... ...
... ...
... ...
... ...
... ...
... ...
... 42.28 36.22 30.22
... 4990 2480 1675
... 805 400 270
31.5
AA, A
7/1
... ...
... ...
... ...
... ...
... ...
... ...
38.22 30.22
3675 1820
545 270
31.5
AA, A
6/1
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
42.28 36.22 30.22
6300 3130 2115
805 400 270
25
AA, A
7/1
... ...
... ...
... ...
... ...
... ...
... ...
38.22 30.22
4625 2290
545 270
25 20
AA, A AA, A
6/1 7/1
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
36.22 38.22 30.22
3970 5750 2850
400 545 270
20 16 12.5
AA, A AA, A AA, A
6/1 6/1 6/1
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
... ... ...
36.22 30.22 30.22
4950 4185 5335
400 270 270
A
See Table 9 for dimensions of reels.
15
B232/B232M − 11 TABLE 9 Dimensions of Standard Reels (For Information Only) Reel DesignationA,B NR NR NR NR
30.22 36.22 38.22 42.28
NR 48.28 NR 60.28D RM 66.32E RM 68.38E RMT 84.36F RMT 84.45F RMT 90.45F RMT 96.60F
Reel Capacity, in.3 (m3)
Nominal Reel Dimensions Width Inside OutsideC in. (m) in. (m) 22 (0.56) 25 (0.64) 22 (0.56) 25 (0.64) 22 (0.56) 25 (0.64) 28 (0.71) 321 ⁄ 2 (0.83)
9 950 (0.182) 16 800 (0.275) 18 000 (0.295) 29 100 (0.477)
Flange Diameter in. (m) 30 (0.76) 36 (0.91) 38 (0.97) 42 (1.07)
Drum Diameter in. (m) 18 (0.41) 18 (0.46) 20 (0.51) 21 (0.53)
38 61 76 99
000 900 900 300
(0.623) (1.014) (1.260) (1.627)
48 60 66 68
(1.22) (1.52) (1.68) (1.73)
24 28 36 36
(0.61) (0.71) (0.91) (0.91)
28 28 32 38
(0.71) (0.71) (0.81) (0.97)
321 ⁄ 2 (0.83) 321 ⁄ 2 (0.83) 38 (0.97) 44 (1.12)
3 to 31 ⁄ 4 (76–83) 3 to 31 ⁄ 4 (76–83) 3 to 31 ⁄ 4 (76–83) 3 to 31 ⁄ 4 (76–83)
122 152 187 300
100 700 000 000
(2.001) (2.502) (3.064) (4.893)
78 78 84 90
(84) (84) (90) (96)
42 42 42 42
(1.07) (1.07) (1.07) (1.07)
36 45 45 60
(0.91) (1.14) (1.14) (1.52)
43 52 52 67
5 5 5 5
(1.98 (1.98 (2.13 (2.29
(2.13)) (2.13)) (2.29)) (2.44))
Arbor Hole Diameter in. (m) 3 to 31 ⁄ 4 (76–83) 3 to 31 ⁄ 4 (76–83) 3 to 31 ⁄ 4 (76–83) 3 to 31 ⁄ 4 (76–83)
(1.09) (1.32) (1.32) (1.70)
to to to to
51 ⁄ 4 (127-133) 51 ⁄ 4 (127-133) 51 ⁄ 4 (127-133) 51 ⁄ 4 (127-133)
A
Prefix “NR” denotes wooden nonreturnable reel, “RM” metal returnable reel, and “RMT” metal returnable reel with one-beam tires. Reels are not designed to withstand the forces required for braking during tension stringing operations. C Pay-off equipment for reels NR 48.28 and smaller should be a minimum of 2 in. (50 mm) wider than the nominal outside reel width to provide for extension of bolts and for possible flange distortion. For reels NR 60.28 and larger, either wood or metal, pay-off equipment should be not less than 4 in. (100 mm) wider than the reel width. D Hub reinforcements will be provided for reel NR 60.28. E Reels RM 66.32 and RM 68.38 have flat rims. F Reels RMT 84.36, RMT 84.45, RMT 90.45, and RMT 96.60 have 3-in. (76 mm) I-beam tires. Reels with similar dimensions except without I-beam tires are sometimes used. B
EXPLANATORY NOTES NOTE 1—In this specification only concentric-lay-stranded aluminum conductors, steel-reinforced, are specifically designated. Conductor constructions not included in this specification should be agreed upon between the manufacturer and the purchaser when placing the order. NOTE 2—For definitions of terms relating to conductors, refer to Terminology B354. NOTE 3—The behavior of properly spaced wire joints in stranded conductors is related to both their tensile strength and elongation. Because of its higher elongation properties, the lower-strength electric-butt weld gives equivalent overall performance to that of a cold-pressure weld or an electric-butt, cold-upset weld in stranded conductors. NOTE 4—The preferred ratio of the lay with respect to the outside diameter of a layer of wires varies for different layers and for different diameters of the conductors, being larger for the inside layers than for the outside layer, and larger for conductors of small diameter than for those of large diameter. NOTE 5—This density is based upon aluminum of 99.50 % purity. The inch-pound density of the aluminum wires is used for mass per unit length calculations and is based upon the standard SI density with the conversion rounded to the nearest 0.0005 lb/in.3 NOTE 6—The increment of mass or electrical resistance of a completed concentric-lay-stranded conductor (k ) in percent is:
m ind
5
=1 1 ~ 9.8696/ n
2
!
where n = length of lay diameter of helical path of the wire The derivation of the above is given in NBS Handbook, 100 Copper Wire Tables. The factors k and m are to be determined separately for the zinc-coated or Zn-5Al-MM coated steel (Section 8). NOTE 7—Wires unlaid from conductors may have different physical properties from those of the wire prior to stranding because of the deformation caused by stranding and straightening for test. If tests on galvanized or Zn-5Al-MM coated steel wires are to be made after stranding, the purchaser and the manufacturer at the time of placing the order should agree on the properties to be met. NOTE 8—To test ACSR conductors for breaking strength successfully as a unit requires special devices for gripping the ends of the aluminum and steel wires without causing damage that may result in failure below the actual strength of the conductor. Various special dead-end devices are available such as compression sleeves, split sleeves, and preformed grips, but ordinary jaws or clamping devices usually are not suitable. NOTE 9—For the convenience of the users of this specification, Tables 7 and 8 have been prepared giving recommended shipping lengths for the standard sizes of ACSR referred to in Tables 1 and 2 respectively. Values of net mass in this table are rounded to the nearest ten pound increment. Because of the variations in coil masses, etc., it is common practice to allow a permissible variation in length of 65 % for sizes larger than No. 1 AWG [40 mm2] and a tolerance of 610 % on sizes No. 1 AWG [40 mm2] and smaller. It is also common practice to allow an amount not exceeding 10 % of the total mass of any one order to be shipped in random lengths with no piece shorter than 50 % of the standard length ordered.
k 5 100 ~ m 2 1 ! where m is the stranding factor, and also the ratio of the mass or electrical resistance of a unit length of stranded conductor to that of a solid conductor of the same cross-sectional area or of a stranded conductor with infinite length of lay, that is, all wires parallel to the conductor axis. The stranding factor m for the completed stranded conductor is the numerical average of the stranding factors for each of the individual wires in the conductor, including the straight core wire, if any (for which the stranding factor is unity). The stranding factor (mind) for any given wire in a concentric-lay-stranded conductor is:
16
B232/B232M − 11 ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the above address or at 610-832-9585 (phone), 610-832-9555 (fax), or
[email protected] (e-mail); or through the ASTM website (www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/ COPYRIGHT/).
17
