ASTM B701/B701M-00

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Designation: B 701/B 701M – 00
Standard Specification for
Concentric-Lay-Stranded Self-Damping Aluminum
Conductors, Steel Reinforced (ACSR/SD)
This standard is issued under the fixed designation B 701/B 701M; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers concentric-lay-stranded self-
damping aluminum conductor, steel-reinforced (ACSR/SD)
and its component wires for use as overhead electrical conduc-
tors (Explanatory Note 1 and Note 2).
1.2 The values stated in inch-pound or SI units are to be
regarded separately as standard. Each system shall be used
independently of the other. Combining values from the two
systems may result in non-conformance with the specification.
For conductor sizes designated byAWG or kcmil, the require-
ments in SI units have been numerically converted from
correspondingvaluesstatedorderivedininch-poundunits.For
FIG. 1 Illustrations of Typical ACSR/SD Strandings
conductor sizes designated by SI units only, the requirements
are stated or derived in SI units.
for Electrical Purposes
1.2.1 For density, resistivity, and temperature, the values
B 232/B 232M Specification for Concentric-Lay-Stranded
stated in SI units are to be regarded as standard.
Aluminum Conductors, Coated Steel-Reinforced (ACSR)
NOTE 1—ACSR/SD is designed to control aeolian vibration by integral
B 263 Test Method for Determination of Cross-Sectional
damping. The conductors consist of a central core of a round steel wire or
Area of Stranded Conductors
wires surrounded by two layers of trapezoidal aluminum 1350-H19 wires
B 341/B 341M Specification for Aluminum-Coated (Alu-
or two layers of trapezoidal aluminum 1350-H19 wires and one layer of
round aluminum 1350-H19 wires (Fig. 1). The trapezoidal-wire layers are minized) Steel CoreWire forAluminum Conductors, Steel
separated from each other and from the steel core by two small annular
Reinforced (ACSR/AZ)
gaps that provide the conductors self-damping characteristics. The round
B 354 Terminology Relating to Uninsulated Metallic Elec-
aluminum wires are in tight layer contact between themselves and the
trical Conductors
underlying trapezoidal wire layer. Different strandings of the same size of
B 498/B 498M Specification for Zinc-Coated (Galvanized)
conductor are identified by type, which is the approximate ratio of steel
Steel Core Wire for Aluminum Conductors, Steel Rein-
area to aluminum area, expressed in percent (Table 1 and Table 2).
forced (ACSR)
NOTE 2—The aluminum and temper designations conform to ANSI
Standard H 35.1. Aluminum 1350 corresponds to UNS A91350 in
B 502 SpecificationforAluminum-CladSteelCoreWirefor
accordance with Practice E 527.
Aluminum Conductors,Aluminum-Clad Steel Reinforced
B 549 Specification for Concentric-Lay-Stranded Alumi-
2. Referenced Documents
num Conductors, Aluminum-Clad Steel Reinforced
2.1 The following documents of the issue in effect on date
(ACSR/AW)
of material purchase form a part of this specification to the
B 606 Specification for High-Strength Zinc-Coated (Galva-
extent referenced herein.
nized)SteelCoreWireforAluminumandAluminumAlloy
2.2 ASTM Standards:
Conductors, Steel Reinforced
B 230/B 230M Specification forAluminum 1350-H19 Wire
B 802/B 802M Specification for Zinc-5 % Aluminum-
Mischmetal Alloy-Coated Steel Core Wire for Aluminum
Conductors, Steel Reinforced (ACSR)
This specification is under the jurisdiction of ASTM Committee B01 on
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on
Conductors of Light Metals.
Current edition approved Oct. 10, 2000. Published December 2000. Originally
published as B 701 – 81. Last previous edition B 701 – 96.
Annual Book of ASTM Standards, Vol 02.03.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
B 701/B 701M
B 803 Specification for High-Strength Zinc-5 % 4.1.1 Quantity of each size and type (Note 1),
Aluminum-Mischmetal Alloy-Coated Steel Core Wire for 4.1.2 Conductor size: kcmil area,
Aluminum and Aluminum-Alloy Conductors, Steel Rein- 4.1.3 Conductor type and number of wires, aluminum and
forced steel (Table 1),
E 29 Practice for Using Significant Digits in Test Data to 4.1.4 Type of steel core wire and if zinc or Zn-5 % Al-MM
Determine Conformance with Specifications alloy coated, area density (ClassesA, B, and C) of coating (see
E 527 Practice for Numbering Metals and Alloys (UNS) 5.2),
2.3 ANSI Documents: 4.1.5 Special tension test, if required (see 9.2),
ANSI H35.1 American National Standard Alloy and Tem- 4.1.6 Place of inspection (Section 15),
per Designation Systems for Aluminum 4.1.7 Package size (see 16.1),
2.4 NIST Documents: 4.1.8 Specialpackagemarking,ifrequired(Section17),and
NBS Handbook 100 —Copper Wire Tables of the National 4.1.9 Heavy wood lagging, if required (see 16.3).
Bureau of Standards
5. Requirement For Wires
2.5 Aluminum Association Documents:
5.1 Before stranding, the round and trapezoidal aluminum
Publication 50, Code Words for Overhead Aluminum Elec-
trical Conductors wires shall conform to the requirements of Specification B 230
except for shape and diameter tolerance of the trapezoidal
3. Terminology
wires. The tensile strength and elongation requirements of
3.1 Definitions of Terms Specific to This Standard: trapezoidal wires shall be the same as for round wires of equal
3.1.1 ACSR/SD covered by this specification has five types
area. The area tolerances shall be such that the finished
of coated core wire and one type of aluminum-clad core wire conductor conforms to Section 12.
which are designated by abbreviations as follows (Explanatory
5.2 Before stranding, the steel core wire shall meet the
Note 2): requirements of Specifications B 341/B 341M, B 498/B 498M,
3.1.1.1 ACSR/SD/AW—ACSR/SD using aluminum-clad
B 502, B 606, B 802/B 802M, or B 803, whichever is appli-
steel wire (Specification B 502). cable.
3.1.1.2 ACSR/SD/AZ—ACSR/SD using aluminum-coated
6. Joints
(aluminized) steel wire (Specification B 341/B 341M).
3.1.1.3 ACSR/SD/GA—ACSR/SD using Class A zinc- 6.1 Electric-butt welds, electric-butt, cold-upset welds, or
coated steel wire (Specification B 498/B 498M). cold-pressure welds may be made in the individual aluminum
3.1.1.4 ACSR/SD/GB—ACSR/SD using Class B zinc- wires during the stranding process. No weld shall occur within
coated steel wire (Specification B 498/B 498M).
50 ft. (15 m) of any other weld in the completed conductor
3.1.1.5 ACSR/SD/GC—ACSR/SD using Class C zinc- (Explanatory Note 2).
coated steel wire (Specification B 498/B 498M).
6.2 There shall be no joints made in the finished steel wires.
3.1.1.6 ACSR/SD/HS—ACSR/SD using extra highstrength
7. Lay
steel wire (Specification B 606).
3.1.1.7 ACSR/SD/MA—ACSR/SD using Class A zinc-5 % 7.1 The nominal lay factors for the trapezoidal aluminum
aluminum-mischmetal alloy-coated steel core wire (Specifica- wires are shown in Table 1 (Explanatory Note 1).
tion B 802/B 802M). 7.2 Thelayfactorfortheroundaluminumwiresshallbenot
3.1.1.8 ACSR/SD/MB—ACSR/SD using Class B zinc-5 % less than 10 nor more than 13.
7.3 The lay factor for the 6-wire layer of 7 and 19-wire steel
aluminum-mischmetal alloy-coated steel core wire (Specifica-
tion B 802/B 802M). cores shall be not less than 18 nor more than 30.
7.4 The lay factor for the 12-wire layer of 19-wire steel
3.1.1.9 ACSR/SD/MC—ACSR/SD using Class V zinc-5 %
aluminum-mischmetal alloy-coated steel core wire (Specifica- cores shall be no less than 16 nor more than 24.
7.5 The direction of lay of the outside layer of aluminum
tion B 802/B 802M).
3.1.1.10 ACSR/SD/MS—ACSR/SD using high-strength wires shall be right-hand.
7.6 The direction of lay of the aluminum and steel wires
zinc-5 % Aluminum-mischmetal alloy-coated steel core wire
(Specification B 803). shall be reversed in successive layers.
7.7 For the purpose of this specification the lay factor is the
4. Ordering Information
length of lay of a given layer divided by its outside diameter.
4.1 Orders for material under this specification shall include
8. Construction
the following information:
8.1 The nominal aluminum cross-sectional area, type,
stranding, and equivalent wire diameters shall be as shown in
Annual Book of ASTM Standards, Vol 14.02.
4 Table 1 (Explanatory Note 1).
Annual Book of ASTM Standards, Vol 01.01.
8.2 ThesmallersizesofACSR/SDconsistofasteelcore,an
Available from American National Standards Institute, 11 West 42nd St., 13th
Floor, New York, NY 10036.
inner gap surrounded by a layer of trapezoidal aluminum wires
Available from National Institute of Standards and Technology (NIST),
(called the inner layer), and an outer gap surrounded by a
Gaithersburg, MD 20899.
7 th
second layer of trapezoidal aluminum wire (called the outer
Available from Aluminum Association Inc., 900 19 Street, NW, Suite 300,
Washington, DC 20006. layer). The larger sizes ofACSR/SD consist of a steel core, an
B 701/B 701M
inner gap surrounded by a layer of trapezoidal aluminum wires trapezoidal aluminum wires, and the number and diameter of
(called the inner layer), an outer gap surrounded by a layer of the round aluminum wires shall be as shown in Table 1.
trapezoidal aluminum wires (called the middle layer), and one 8.3 All conductor gaps shall be measured radially. The
of round aluminum wires (called the outer layer) fitting tightly nominal thickness of the gap is 0.030 in. (0.75 mm). The
over the middle layer. The diameter and number of steel core tolerance of both the inner and outer gaps shall be plus 0.000
wires, the number and equivalent round wire diameters of the in. (0.00 mm) and minus 0.010 in. (0.25 mm).
TABLE 1 Construction Requirements of Aluminum Conductors, Self Damping, Concentric-Lay-Stranded, Steel-Reinforced
A
Stranding Number of Wires and Diameter, in. Nominal
Nominal
Alumi- Rated
C Mass per Outside
Conductor Size Aluminum Steel
num Strength,
1000 ft, lb Diameter,
A,B
Lay kip
D E F in.
kcmil Type Code Word Round Trapezoidal Round
Factor
2156 8 Bluebird 10 3 0.2179 19 3 0.0961 14.5 2504 60.7 1.716
15 3 0.2184 12.1
21 3 0.2145 11.0
1780 8 Chukar 9 3 0.2041 19 3 0.0874 14.5 2068 51.1 1.565
13 3 0.2150 12.0
21 3 0.1957 11.0
1780 5 Smew 8 3 0.2171 7 3 0.1144 16.0 1921 43.6 1.531
14 3 0.2128 12.5
21 3 0.1914 11.5
1590 13 Falcon 10 3 0.1891 19 3 0.1030 13.5 2039 55.1 1.521
14 3 0.1977 11.7
24 3 0.1690 11.5
1590 7 Lapwing 8 3 0.2059 7 3 0.1253 15.9 1791 42.6 1.468
12 3 0.2130 12.8
21 3 0.1835 11.5
1590 5 Ratite 8 3 0.2095 7 3 0.1083 15.4 1715 39.1 1.447
13 3 0.2143 12.5
23 3 0.1669 11.5
1431 13 Plover 10 3 0.1792 19 3 0.0977 13.5 1835 49.6 1.448
14 3 0.1868 11.7
24 3 0.1609 11.5
1431 7 Bobolink 8 3 0.1946 7 3 0.1189 15.1 1612 38.9 1.398
12 3 0.2015 12.2
21 3 0.1747 11.5
1431 5 Popinjay 8 3 0.1936 7 3 0.1025 16.0 1544 35.3 1.381
13 3 0.1972 12.5
21 3 0.1726 11.5
1351.5 13 Martin 11 3 0.1604 19 3 0.0949 14.7 1733 46.8 1.417
15 3 0.1652 12.8
21 3 0.1772 11.5
1351.5 10 Frigate 9 3 0.1786 7 3 0.1377 14.5 1629 41.7 1.389
14 3 0.1757 12.2
21 3 0.1735 11.0
1351.5 7 Dipper 8 3 0.1890 7 3 0.1155 15.2 1522 36.7 1.361
12 3 0.1954 12.2
21 3 0.1701 11.0
1351.5 5 Ringdove 8 3 0.1946 7 3 0.0997 16.0 1458 33.4 1.344
12 3 0.1949 12.8
21 3 0.1680 11.5
1272 13 Pheasant 11 3 0.1552 19 3 0.0921 14.7 1631 44.1 1.378
15 3 0.1599 12.8
21 3 0.1723 11.5
1272 7 Bittern 8 3 0.1829 7 3 0.1121 14.5 1433 34.6 1.323
12 3 0.1894 12.3
21 3 0.1653 11.5
1272 5 Scissortail 7 3 0.1929 7 3 0.0967 15.7 1372 31.4 1.305
11 3 0.2029 12.3
21 3 0.1631 11.5
1192.5 13 Grackle 10 3 0.2147 19 3 0.0892 14.2 1526 41.9 1.274
16 3 0.2138 11.5
1192.5 7 Bunting 8 3 0.1768 7 3 0.1085 15.1 1343 32.4 1.284
12 3 0.1831 12.2
21 3 0.1604 11.5
1192.5 5 Oxbird 7 3 0.1868 7 3 0.0936 15.7 1286 29.5 1.266
11 3 0.1960 12.3
21 3 0.1582 11.5
1113 13 Finch 9 3 0.2188 19 3 0.0862 14.2 1424 39.1 1.233
15 3 0.2133 11.5
1113 7 Bluejay 8 3 0.1705 7 3 0.1049 15.9 1254 30.3 1.242
12 3 0.1765 12.8
21 3 0.1553 11.5
B 701/B 701M
TABLE 1 Continued
A
Stranding Number of Wires and Diameter, in. Nominal
Nominal
Alumi- Rated
C Mass per Outside
Conductor Size Aluminum Steel
num Strength,
1000 ft, lb Diameter,
A,B
Lay kip
D E F in.
kcmil Type Code Word Round Trapezoidal Round
Factor
1113 5 Avocet 7 3 0.1818 7 3 0.0904 16.0 1200 27.5 1.226
12 3 0.1798 12.4
21 3 0.1533 11.5
1033.5 13 Curlew 9 3 0.2106 7 3 0.1383 14.2 1329 36.3 1.191
14 3 0.2129 11.5
1033.5 7 Ortolan 8 3 0.2168 7 3 0.1010 15.2 1161 28.1 1.145
14 3 0.2167 11.5
1033.5 5 Snowbird 7 3 0.1746 7 3 0.871 16.0 1115 25.9 1.185
12 3 0.1731 12.4
21 3 0.1481 11.5
954 13 Cardinal 8 3 0.2147 7 3 0.1329 14.2 1227 33.5 1.147
13 3 0.2122 11.5
954 7 Rail 8 3 0.2080 7 3 0.0971 15.2 1073 26.1 1.103
13 3 0.2163 11.5
954 5 Phoenix 7 3 0.2196 7 3 0.0836 15.6 1027 23.7 1.088
13 3 0.2178 11.5
795 16 Drake 9 3 0.1865 7 3 0.1360 13.9 1093 31.8 1.077
13 3 0.1926 11.5
795 13 Condor 8 3 0.1957 7 3 0.1213 14.2 1023 28.2 1.055
12 3 0.2018 11.5
795 10 Puffin 7 3 0.2067 7 3 0.1056 14.7 956 25.1 1.034
12 3 0.2033 11.5
795 7 Tern 7 3 0.2034 7 3 0.0886 15.2 893 21.9 1.013
11 3 0.2144 11.5
795 5 Macaw 6 3 0.2167 7 3 0.0764 15.6 856 19.8 0.999
11 3 0.2160 11.5
636 16 Grosbeak 9 3 0.1666 7 3 0.1216 13.9 874 25.4 0.975
13 3 0.1723 11.5
636 13 Rook 8 3 0.1749 7 3 0.1085 14.3 818 22.9 0.955
12 3 0.1806 11.5
636 10 Goldfinch 7 3 0.1848 7 3 0.0945 14.7 765 20.1 0.935
12 3 0.1819 11.5
636 7 Killdeer 7 3 0.1815 7 3 0.0793 15.2 715 17.7 0.917
12 3 0.1838 11.5
636 5 Pipit 6 3 0.1938 7 3 0.0684 15.8 684 16.1 0.903
11 3 0.1932 11.5
556.5 16 Dove 9 3 0.1557 7 3 0.1138 14.0 765 22.6 0.919
13 3 0.1613 11.5
556.5 13 Parakeet 8 3 0.1637 7 3 0.1015 14.3 716 20.0 0.901
13 3 0.1662 11.5
556.5 10 Sapsucker 7 3 0.1728 7 3 0.0884 14.7 669 17.8 0.882
12 3 0.1702 11.5
556.5 7 Sunbird 7 3 0.1707 7 3 0.0741 15.2 625 15.5 0.863
11 3 0.1790 11.5
556.5 5 Blackbird 6 3 0.1820 1 3 0.1692 15.8 599 13.6 0.843
10 3 0.1892 11.5
477 16 Hawk 9 3 0.1438 7 3 0.1053 14.0 655.8 19.5 0.860
13 3 0.1496 11.5
477 13 Flicker 8 3 0.1515 7 3 0.0940 14.4 613.5 17.2 0.843
13 3 0.1502 11.5
477 10 Toucan 7 3 0.1599 7 3 0.0818 14.8 573.4 15.3 0.824
12 3 0.1576 11.5
477 7 Jackdaw 7 3 0.1577 7 3 0.0686 15.2 535.8 13.3 0.808
12 3 0.1589 11.5
477 5 Kestrel 6 3 0.1656 1 3 0.1566 16.0 513.3 11.7 0.787
10 3 0.1768 11.5
397.5 16 Ibis 9 3 0.1278 7 3 0.0961 14.2 546.5 16.4 0.771
14 3 0.1338 11.5
397.5 10 Stork 7 3 0.1424 7 3 0.0747 15.0 477.9 12.9 0.750
12 3 0.1459 11.5
397.5 7 Longspu
...