ASTM B229-04同心绞捻的铜与包铜钢丝复合导线

Designation:B 229–04Standard Specification forConcentric-Lay-Stranded Copper and Copper-Clad Steel Composite Conductors 1This standard is issued under the fixed designation B 229;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.This standard has been approved for use by agencies of the Department of Defense.1.Scope1.1This specification covers concentric-lay-stranded con-ductors made from uncoated hard-drawn round copper wires in combination with hard-drawn round copper-clad steel wires for general use as overhead electrical conductors.1.2For the purpose of this specification,conductors are classified under the following type designations (see Fig.1):Type A Type G Type C Type J Type D Type K Type E Type N Type EK Type P Type FTypeV1.3The SI values for density are regarded as the standard.For all other properties the inch-pound values are to be regarded as standard and the SI units may be approximate.2.Referenced Documents 2.1ASTM Standards:2B 1Specification for Hard-Drawn Copper WireB 227Specification for Hard-Drawn Copper-Clad Steel WireB 354Terminology Relating to Uninsulated Metallic Elec-trical Conductors 2.2ANSI Standard:C 42Definitions of Electrical Terms 32.3National Institute of Standards and Technology:NBS Handbook 100—Copper Wire Tables 43.Ordering Information3.1Orders for material under this specification shall include the following information:3.1.1Quantity of each size and type;3.1.2Conductor size:hard-drawn copper equivalent in circular-mil area or AWG (Section 7and Table 1);3.1.3Type (see 1.2,Fig.1,and Table 1);3.1.4Direction of lay of outer layer,if other than left-hand (see 6.3);3.1.5When physical tests shall be made (see section 7.2);3.1.6Package size (see 14.1);1This specification is under the jurisdiction of ASTM Committee B01on Electrical Conductors and is the direct responsibility of Subcommittee B01.06on Composite Conductors.Current edition approved April 1,2004.Published April 2004.Originally approved in st previous edition approved in 2002as B 229–02.2For referenced ASTM standards,visit the ASTM website,,or contact ASTM Customer Service at service@.For Annual Book of ASTM Standards volume information,refer to the standard’s Document Summary page on the ASTM website.3Available from American National Standards Institute (ANSI),25W.43rd St.,4th Floor,New York,NY 10036.4Available from National Institute of Standards and Technology (NIST),100Bureau Dr.,Stop 3460,Gaithersburg,MD20899-3460.FIG.1Standard Types of Composite Conductors1Copyright ©ASTM International,100Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.3.1.7Special package marking,if required(Section15);3.1.8Lagging,if required(see14.2);and3.1.9Place of inspection(Section13).TABLE1Construction Requirements and Breaking Strength of Concentric-Lay-Stranded Copper and Copper-Clad Steel CompositeConductorsN OTE1—Metric Equivalents—For conductor size,1cmil=0.0005067mm2(round to four significantfigures);for diameter1mil=0.02540mm (round to four significantfigures);for breaking strength,1lb=0.45359kg(round to four significantfigures).Conductor Size,Hard-Drawn CopperEquivalent AType Grade30EHS Copper-Clad Steel WiresHard-Drawn CopperWires Rated BreakingStrength,min,lbcmil AWG Number ofWiresDiameter ofWires,milsNumber ofWiresDiameter ofWires,mils350000...E7157.612157.632420 350000...EK4147.015147.023850 350000...V3175.19189.323480 300000...E7145.912145.927770 300000...EK4136.115136.120960300000...V3162.19175.220730 250000...E7133.212133.223920 250000...EK4124.215124.217840 250000...V3148.09160.017420 2116000000E7122.512122.5207302116000000G2194.45194.415640 2116000000EK4114.315114.315370 2116000000V3136.19147.215000 2116000000F1183.36183.312290 167800000E7109.112109.116800 167800000J3185.14185.116170 167800000G2173.15173.112860 167800000EK4101.815101.812370 167800000V3121.29131.112200 167800000F1163.26163.2998013310000K4178.03178.017600 13310000J3164.84164.813430 13310000G2154.25154.210510 13310000V3108.09116.79846 13310000F1145.46145.48094 1056000K4158.53158.514490 1056000J3146.74146.710970 1056000G2137.35137.38563 1056000F1129.46129.46536 836901N5154.62154.615410836901K4141.23141.211900 836901J3130.74130.79000 836901G2122.25122.26956 836901F1115.36115.35266 663602P6154.01154.016870 663602N5137.72137.712680 663602K4125.73125.79730 663602J3116.44116.47322 663602A1169.92169.95876 663602G2108.95108.95626 663602F1102.66102.64233 526203P6137.11137.113910 526203N5122.62122.610390 526203K4112.03112.07910 526203J3103.64103.65955 526203A1151.32151.34810 417404P6122.11122.111420 417404N5109.22109.28460 417404D2161.51161.57340 417404A1134.72134.73938330905P6108.71108.79311 330905D2143.81143.86035 330905A1120.02120.03193TABLE 1ContinuedConductor Size,Hard-Drawn CopperEquivalent ATypeGrade 30EHS Copper-Clad Steel WiresHard-Drawn CopperWires Rated Breaking Strength,min,lbcmil AWG Number of WiresDiameter of Wires,mils Number of WiresDiameter of Wires,mils 262406D 2128.11128.14942262406A 1106.82106.82585262406C 1104.6B 2104.62143208207D 2114.11114.14022208207A 1126.6289.52754165108D 2101.61101.63256165108A 1112.7279.72233165108C 180.8B 283.411001175091⁄2D280.8B180.81330A See Explanatory Note 7.BGrade 40HS (all of the other CCS wire is Grade 30EHS).4.Material for Wires4.1The purchaser shall designate the size and type of conductor to be furnished.The position of the hard-drawn copper wires and the copper-clad steel wires in the conductor cross section shall be as shown in Fig.1.4.2Before stranding,the wire used shall meet the require-ments of Specifications B 1and B 227that are applicable to its type.5.Joints5.1Copper —Welds and brazes may be made in copper rods or in copper wires prior to final drawing.Joints may not be made in the finished copper wires composing concentric-lay-stranded composite conductors containing a total of seven wires or less.In other conductors,welds and brazes may be made in the finished individual copper wires composing the conductor,but shall be not closer than 50ft (15m)to any other joint in the same layer in the conductor.5.2Copper-Clad Steel —Joints or splices may be made in the finished individual copper-clad steel wires composing concentric-lay-stranded conductors,provided that such joints or splices have a protection equivalent to that of the wire itself and that they do not decrease the strength of the finished stranded conductor below the minimum breaking strength shown in Table 1.Such joints or splices shall be not closer than 50ft (15m)to any other joint in the same layer in the conductor (Explanatory Note 1).y6.1For Types A,C,and D conductors,the preferred lay is approximately 16.5times the outside diameter of the com-pleted conductor,but shall be not less than 13nor more than 20times this diameter.6.2For all other types,the preferred lay of a layer of wires is 13.5times the outside diameter of that layer,but shall be not less than 10nor more than 16times this diameter.6.3The direction of lay of the outer layer shall be left-hand unless the direction of lay is specified otherwise by the purchaser.6.4The direction of lay shall be reversed in successive layers.6.5All wires in the conductor shall lie naturally in their true positions in the completed conductor.They shall tend to remain in position when the conductor is cut at any point and shall permit restranding by hand after being forcibly unraveled at the end of the conductor.7.Construction7.1The numbers and diameters of wires in the various types of concentric-lay-stranded composite conductors shall conform to the requirements prescribed in Table 1(Explanatory Note 2).8.Physical and Electrical Tests8.1Tests for the physical and electrical properties of wires composing concentric-lay-stranded composite conductors shall be made before but not after stranding.8.2At the option of the purchaser or his representative,tension and elongation tests on wires before stranding may be waived,and the completed conductor may be tested as a unit.The breaking strength of the conductors so tested shall be not less than the rated strength values shown in Table 2.The free length between grips of the test specimen shall be not less than 24in.(0.61m),and care shall be taken to ensure that the wires in the conductor are evenly gripped during the test (Explana-tory Note 3).9.Density9.1For the purpose of calculating weights,cross sections,and so forth,the density of the copper shall be taken as 8.89g/cm 3at 20°C (Explanatory Note 4and Table 2).9.2The density of both types of copper-clad-steel wire shall be taken as stated in Table 2.TABLE 2Density of Copper and Copper-Clad SteelUnitsDensity at 20°CCopper 30%Copper-Clad Steel40%Copper-Clad SteelGrams per cubic centimetre 8.898.158.24Pounds per cubic inch0.32120.29440.2975Pounds per circular mil-foot0.00000302700.00000277500.000002803910.Mass and Resistance10.1The mass 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 Table3.When greater accuracy is desired,the increment based on the specific lay of the conductor may be calculated(Explanatory Note6).Refer-ence information is shown in Appendix X1.11.Variation in Area11.1The area of cross section of the completed conductor shall be not less than98%of the nominal area.The area of cross section of a conductor shall be considered to be the sum of the cross-sectional areas of its component wires at any point when measured perpendicularly to their axes(Explanatory Note8).12.Finish12.1The conductor shall be free of all imperfections not consistent with the best commercial practice.13.Inspection13.1Unless otherwise specified in the contract or purchase order,the manufacturer shall be responsible for the perfor-mance of all inspection and test requirements specified.13.2All inspections and tests shall be made at the place of manufacture unless otherwise especially agreed to between the manufacturer and the purchaser at the time of the purchase.13.3The manufacturer shall afford the inspector represent-ing the purchaser all reasonable manufacturer’s facilities nec-essary to ensure that the material is being furnished in accordance with this specification.14.Packaging and Shipping14.1Package sizes for conductors shall be agreed upon by the manufacturer and the purchaser in the placing of individual orders(Explanatory Note9).14.2The 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 purchase.15.Marking15.1The net mass,length(or lengths,and number of lengths,if more than one length is included in the package), size,type of conductor,purchase order number,and any other marks required by the purchase order shall be marked on a tag attached to the end of the conductor inside of the package.The same information,together with the manufacturer’s serial number(if any)and all shipping marks required by the purchaser,shall appear on the outside of each package.16.Keywords16.1composite conductors;concentric-lay-stranded copper conductor;copper-clad steel conductor;copper electrical con-ductor;electrical conductor;electrical conductor—copper; stranded copper conductorEXPLANATORY NOTESN OTE1—Joints or splices in individual copper-clad steel wires in their finished size are made by electrical butt welding.Two types of joints are used and are described as follows:(a)Weld-Annealed Joints—After butt welding,the wire is annealed for a distance of approximately5in.(127mm)on each side of the weld.The weld then is protected from corrosion with a snug-fitting seamless copper sleeve that extends at least3⁄8in.(9.5mm)on each side of the weld and that is thoroughly sealed to the wire with solder.The wall thickness of the sleeve is at least10%of the radius of the wire.This joint has a tensile strength of approximately60000psi(415MPa). This is less than the strength of the individual wires,but an allowance is made for this in the rated strength of the conductor as a whole.The completed conductor when containing such joints is required to have the full rated strength.This type of joint is only slightly larger than the wire itself and is applicable for7-wire composite conductors(except Types F and G)and for12-and19-wire composite conductors.(b)Compression-Weld Joints—Compression-weld joints differ from weld-annealed joints in that the wire is not annealed after the butt-welding operation,but is reinforced with a hard-drawn,seamless,silicon-tin bronze sleeve which is applied by means of a hydraulic compressor over the weld.This sleeve is covered with solder so as to completely seal the ends.These sleeves have a wall thickness of25to50%of the radius of the wire,depending on wire size.Their use is usually limited to3-wire conductors where the relatively large diameter is not objectionable although they may be used also in Type F conductors.This joint develops the full strength of the wire.N OTE2—For definitions of terms relating to conductors,reference should be made to(1)ANSI C42.35-latest revision and(2)Terminology B354.N OTE3—To test stranded conductors for tensile strength successfully as a unit requires an adequate means of gripping the ends of the test specimen.Various means are available,such as a long tube or socket into which the conductor may be soldered,or in which,after insertion,the conductors may be swaged or pressed without serious distortion.Ordinary jaws or clamping devices usually are not suitable.The conductor testing facilities of many commercial laboratories are limited to a breaking strength of30000lb(13.6Mg)or less.Consequently,it may not be feasible to test the very large-sized conductors as a unit.Where such is imperative,special arrangements for the testing shall be agreed upon between the manufacturer and the purchaser.N OTE4—The value of density of copper is in accordance with the International Annealed Copper Standard.As pointed out in the discussion of this subject in NBS Handbook100of the National Institute of Standards and Technology,4there is no appreciable difference in values of density of hard-drawn and annealed copper wire.Equivalent expressions of density at20°C are given in Table3.N OTE5—The value of density of copper-clad steel is an average value that has been found to be in accordance with usual values encountered in practice.Equivalent expressions of density at20°C are given in Table3.TABLE3Standard Increments Due to StrandingType of ConductorIncrement(Increase)of Resistance and Weight,%A,C,and D0.8 F,G,J,K,N,and P 1.0 V 1.2 E and EK1.4N OTE 6—The increment of mass or electrical resistance of a completed concentric-lay-stranded conductor (k )in percent is calculated as follows:k 5100~m 21!where m is the lay factor,and is 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 lay factor m for the completed stranded conductor is the numerical average of the lay factors for each of the individual wires in the conductor,including the straight core wire,if any (for which the lay factor is unity).The lay factor (m ind )for any given wire in a concentric-lay-stranded conductor is calculated as follows:m ind 5=11~9.8696/n 2!wheren =length of lay/diameter of helical path of the wireThe deviation of the above is given in NBS Handbook 100of NIST.N OTE 7—Hard-drawn copper equivalent is the area of a hard-drawn copper cable having the same dc resistance at 20°C as that of the composite cable.N OTE 8—For the convenience of the users of this specification,Appen-dix X1has been prepared giving the approximate diameters,areas,resistances per 1000ft,and mass per 1000ft and per mile,of the various constructions referred to in Table 1.N OTE 9—It is of some importance that hard-drawn conductors be placed on reels having drum diameters sufficiently large that the bending will not unduly modify the physical properties of the completed conduc-tor.N OTE 10—The term “mass per unit length”is used in this specification as being more technically correct,replacing the term “weight.”APPENDIX(Nonmandatory Information)X1.Diameters,Areas,Mass,and Resistances of Concentric-Lay-Stranded Composite ConductorsN OTE 1—Metric Equivalents —For conductor size,1cmil =0.0005067mm 2(round to four significant figures):for nominal diameter,1in.=25.40mm (round to four significant figures);for area,1in.2=645.16mm 2(round to four significant figures);for mass,1lb/1000ft =1.48816kg/km (round to four significant figures);for resistance 1ohm/1000ft =3.281ohm/km (round to four significant figures).Conductor Size,Hard-Drawn CopperEquivalent A TypeNominal Diameter of Conduc-tor,in.Actual Area of Conductor Mass Unit Length,lb DC Resistance ohms/1000ft at 20°C cmil AWG cmil in.2per 1000ft per mile 350000...E 0.7884719000.3706140474140.0314*******...EK 0.7354106000.3225123865370.0314*******...V 0.7544145000.3255124665810.0314*******...E 0.7294044000.3177120363540.03667300000...EK 0.6803519000.2764106156040.03667300000...V 0.6983551000.2789106856370.03667250000...E 0.6663371000.2648100352960.0440*******...EK 0.6212931000.2302883.946670.0440*******...V 0.6372961000.2326890.447010.044002116000000E 0.6132851000.2239848.344790.051992116000000G 0.5832645000.2078789.641690.051992116000000EK 0.5712482000.1950748.639520.051992116000000V 0.5862506000.1968753.539780.051992116000000F 0.5502352000.1847710.537520.05199167800000E 0.5452262000.1776672.935530.06556167800000J 0.5552398000.1884707.137330.06556167800000G 0.5192097000.1647626.033050.06556167800000EK 0.5091969000.1546593.831350.06556167800000V 0.5221988000.1561597.631550.06556167800000F 0.4901864000.1464563.229740.0655613310000K 0.5342218000.1742645.834100.0826513310000J 0.4941901000.1493560.529590.0826513310000G 0.4631664000.1307496.826230.0826513310000V 0.4651576000.1237473.825010.0826513310000F 0.4361480000.1162447.123610.0826********K 0.4751759000.1381512.027040.10431056000J 0.4401506000.1183444.123450.10431056000G 0.4121320000.1036393.820800.1043105600F0.3881172000.09206354.118700.1043Conductor Size,Hard-Drawn CopperEquivalent A TypeNominal Diameter of Conduc-tor,in.Actual Area of Conductor Mass Unit Length,lb DC Resistance ohms/1000ft at 20°C cmil AWG cmil in.2per 1000ft per mile 836901N 0.4641673000.1314481.125400.1315836901K 0.4231396000.1096406.421460.1315836901J 0.3921196000.09392352.518610.1315836901G 0.3671045000.08210312.016470.1315836901F 0.346930600.07309281.114840.1315663602P 0.4621660000.1304471.324880.1658663602N 0.4131327000.1042381.620150.1658663602K 0.3771106000.08687322.017000.1658663602J 0.349948400.07449279.614760.1658663602A 0.366866000.06801256.913560.1658663602G 0.327830100.06520247.613080.1658663602F 0.308736900.05787222.611750.1658526203P 0.4111316000.1033373.519720.2090526203N 0.3681052000.08264302.515970.2090526203K 0.336878100.06896255.713500.2090526203J 0.311751300.05901221.511700.2090526203A 0.326686800.05394203.710760.2090417404P 0.3661044000.08196296.315640.2636417404N 0.328834700.06556240.012670.2636417404D 0.348782500.06145225.911930.2636417404A 0.290544300.04275161.5852.60.2636330905P 0.326827100.06496234.812400.3291330905D 0.310620400.04872179.1945.80.3291330905A 0.258432000.03393128.2676.70.3291262406D 0.276492300.03866142.1750.50.4150262406A 0.230342200.02688101.5536.00.4150262406C B 0.225328200.0257897.89516.90.4150208207D 0.246390600.03067112.8595.40.5232208207A 0.223320400.0251793.71494.80.5232165108D 0.219309700.0243289.42472.10.6598165108A 0.199254000.0199574.29392.30.6598165108C B 0.179204300.0160461.02322.20.65981175091⁄2D B0.174195900.0153956.94300.60.9170A See Explanatory Note 7.BGrade 40HS (all other CCS wires are Grade 30EHS).Also noted below Table 1.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this ers 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,100Barr 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 service@ (e-mail);or through the ASTM website ().。