1、Designation: B354 05 B354 12Standard Terminology Relating toUninsulated Metallic Electrical Conductors1This standard is issued under the fixed designation B354; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revis
2、ion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONThese terminologies relate only to interpretations as applied to uninsulated metallic electricalconductors in specifications und
3、er the jurisdiction of ASTM Committee B01 on Electrical Conductors,and do not necessarily correspond to the definitions used in other fields.1. Scope1.1 This terminology standard defines abbreviations and terms specific to uninsulated electrical conductors. For terms relatingto superconductors, see
4、Terminology B713.2. Referenced Documents2.1 ASTM Standards:2B193 Test Method for Resistivity of Electrical Conductor MaterialsB713 Terminology Relating to Superconductors (Withdrawn 2001)33. AbbreviationsAAACall aluminum alloy conductorAACaluminum conductor.AACSRaluminum alloy conductor, steel reinf
5、orced.ACARaluminum conductor, aluminum alloy reinforced.ACSRaluminum conductor, steel reinforced.AWACSSaluminum cladconductor steel wire.supported.AZAMCaluminum coated (aluminized) steel wire.matrix composite.AWold designation for what is now termed AW2.AW2aluminum-clad steel core wire, normal stren
6、gth.AW3aluminum-clad steel core wire, high strength.AZold designation (aluminized).CCAcopper-clad aluminumCCScopper-clad steelCOMPcompact construction.EHSextra high strength.GAold designation for what is now termed GA2.GAGA2zinc coated (galvanized) steel wire, coating class A.GBGA3zinc coated (galva
7、nized) high strength steel wire, coating class B.A.GA4zinc coated (galvanized) extra high strength steel wire, coating class A.GA5zinc coated (galvanized) ultra high strength steel wire, coating class A.GBobsolete designation, class B galvanizing is no longer offered.1 This terminology is under the
8、jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.01 on Editorial andRecords.Current edition approved March 1, 2005Dec. 1, 2012. Published March 2005January 2013. Originally approved in 1960. Last previous edition approved in 19982005 as
9、B354 98.B354 05. DOI: 10.1520/B0354-05.10.1520/B0354-12.2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3
10、The last approved version of this historical standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to ad
11、equately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshoh
12、ocken, PA 19428-2959. United States1GCold designation for what is now termed GC2.GCGC2zinc coated (galvanized) steel wire, coating class C.HSzinc coated (galvanized) high strength steel wire.high strength.IACSinternational annealed copper standard, which is 1/58 Ohm-mm2/m at 20C for 100 % conductivi
13、ty.MAold designation for what is now termed MA2.MAMA2zinc-5 % zinc-5 % aluminum-mischmetal alloy coated steel wire, coating class A.MBMA3zinc-5 % zinc-5 % aluminum-mischmetal alloy coated high strength steel wire, coating class B.A.MA4zinc-5 % aluminum-mischmetal alloy coated extra high steel wire,
14、coating class A.MA5zinc-5 % aluminum-mischmetal alloy coated ultra high steel wire, coating class A.MBobsolete designation, class B galvanizing is no longer offered.MCold designation for what is now termed MC2.MCMC2zinc-5 % zinc-5 % aluminum-mischmetal alloy coated steel wire, coating class C.MS zin
15、c-5 % aluminum-mischmetal alloy coated high strength steel wire.old designation for what is now termed MA3.MMmischmetal.NSnon-specular.SDself dampening construction.SIWsingle input wire construction.TPtwisted pair.TWtrapezoidal shaped wire.UHSultra high strength.Zn-5Al-MMzinc-5 % aluminum-mischmetal
16、 alloy coating.4. Terminology4.1 Definitions:aeolian vibrationresonant vibration of a conductor caused by the alternate shedding of wind-induced vortices from oppositesides of the conductor. (Frequency is usually less than 200 Hz and amplitude rarely exceeds one conductor diameter.)annealed wiresee
17、soft wire.area densitymass per unit area.bare conductora conductor having no nonmetallic covering.brazingthe joining of ends of two wires, rods, or groups of wires with a nonferrous filler metal at temperatures above 800F427C.breaking strengththe maximum load that a conductor attains when tested in
18、tension to rupture.bunch-stranded conductora conductor composed of wires twisted together with a given length and direction of lay in suchmanner that the respective wires at successive cross sections along the length of the conductor do not necessarily form asymmetrical geometric pattern, nor necess
19、arily occupy the same positions relative to each other.circular mil (cmil)a unit of area equal to the area of a circle one mil (0.001 in., 0.0254 mm) in diameter. The area of a circlein circular mils is equal to the square of the diameter in mils area(cmils) = diameter(mils)2, 1 cmil = 7.854 107 in.
20、2 5.067 1010 m2.clad wirewire comprised of a given metal covered with a relatively thick application of a different metal. The bonding processis normally a combination of heat and pressure and results in a metallurgical bond.coated wirewire comprised of a given metal covered with a relatively thin a
21、pplication of a different metal. The coating processis normally electroplating or dip coating.cold-drawingreducing the cross section by pulling through a die or dies, at a temperature lower than the bination stranded conductora conductor constructed with wires of different diameters with such differ
22、ences occurringeither within a single layer or from layer to pact stranded conductora unidirectional or unilay or conventional concentric conductor, constructed with a central coresurrounded by one or more layers of helically laid wires and formed into final shape by rolling, drawing, or other means
23、; andmanufactured to a specified nominal diameter, approximately 8 to 10 % below the nominal diameter of a conventionalnon-compact conductor of the same cross-sectional area.B354 122compressed stranded conductora unidirectional or unilay or conventional concentric conductor manufactured to a specifi
24、ednominal diameter 3 % less than the calculated diameter of non-compressed conductor of the same construction andcross-sectional posite conductora conductor consisting of two or more types of wire, each type of wire being plain, clad, or coated;stranded together to operate mechanically and electrica
25、lly as a single conductor.concentric-lay conductorconductor constructed with a central core surrounded by one or more layers of helically laid wires.Several types are as follows:compact round conductorsee compact stranded conductor.conventional concentric conductorconductor constructed with a round
26、central core surrounded by one or more layers ofhelically laid round wires. The direction of lay is reversed in successive layers, and generally with an increase in length of lay forsuccessive layers.equilay conductorconductor constructed with a central core surrounded by more than one layer of heli
27、cally laid wires, alllayers having a common length of lay, direction of lay being reversed in successive layers.parallel core conductorconductor constructed with a central core of parallel-laid wires surrounded by one layer of helicallylaid wires.rope-lay conductorconductor constructed of a bunch-st
28、randed or a concentric-stranded member or members, as a central core,around which are laid one or more helical layers of such members.unidirectional conductorconductor constructed with a central core surrounded by more than one layer of helically laid wires,all layers having a common direction of la
29、y, with increase in length of lay for each successive layer.unilay conductorconductor constructed with a central core surrounded by more than one layer of helically laid wires. All layershaving a common direction of lay and essentially similar length of lay, which is a multiple of the outer diameter
30、 of the finishedconductor, for each successive layer. The lay length of the inner layers shall not vary by more than 610 % of the lay length ofthe outer layer.conductivitythe measure of a materials ability to conduct an electric current between two points. Conductivity is inverselyrelated to resisti
31、vity and typically expressed as % IACS. Annealed copper is defined as 100 % IACS and other conductivityvalues are reported relative to annealed copper.conductora wire or combination of wires not insulated from one another, suitable for carrying an electric current.conductor corethe center strand or
32、member about which one or more layers of wires or members are laid helically to form aconcentric-lay.continuous cast drawing stockthe as-rolled section, normally round, produced by a continuous casting and rolling process.coresee conductor core.cored, annular, conductora conductor in which one or mo
33、re layers of wires are laid helically around a central core of metallicor nonmetallic material. The core is used as a mandrel for the application of subsequent layers of wire to maintain consistentspacing of these members around the conductor axis.direction of laythe lateral direction, designated as
34、 left-hand or right-hand, in which the wires of a member or units of aconductor run over the top of the member or conductor as they recede from an observer looking along the axis of the memberor conductor.drawing stockthe as-rolled or extruded section, normally round, made from any of a variety of m
35、anufacturing processes,intended as feed stock for subsequent drawing operations.electric-butt, cold-upset welda weld between two prepared ends of adjacent lengths of work-hardenable material that is pressedtogether in a resistance welding apparatus which melts the abutting ends to unite them and for
36、m the weld. In turn, the resultingweld zone is forced out in the form of flash by a cold-upsetting operation which, through cold-working, restores the materialsubstantially to its original tensile strength.equilay conductorsee concentric-lay conductor.fill factorthe ratio of the weight of a given le
37、ngth of a stranded conductor to the weight of the solid conductor of the samediameter, length, and material. It may also be expressed by the ratio of the nominal area of the conductor times (1 plus thestranding factor) and the area of the circle that encloses the strands of the conductor.galvanized
38、steel wiresteel wire coated with zinc.half-hard wireas applied to aluminum, wire that has been processed so as to produce a strength approximately midway betweenthat of soft wire and that of hard-drawn wire.B354 123hard-drawn wireas applied to aluminum and copper, wire that has been cold drawn to fi
39、nal size so as to approach the maximumtensile strength obtainable.hot-rolled drawing stockthe as-rolled section, normally round, produced by hot rolling in a rod mill from a billet or wire bar.intermediate temperas applied to aluminum, any temper between soft and hard drawn.jointthat portion of the
40、conductor where the ends of two wires, rods, or groups of wires are joined by brazing, soldering,welding, or by mechanical means.lay, n4one turn of the helix of a wire or member of a standard conductor. See also direction of lay and length of lay.lay, vto arrange the wires or members of a conductor
41、either by twisting them or by forming them into one or more layers helicallyapplied.lay factorthe ratio of the length of lay to the external diameter of the corresponding layer of wires or members in the strandedconductor.length of laythe axial length of one turn of the helix of a wire or member.lin
42、ear densitymass per unit length.liquor-finished wirewire, usually of ferrous material, drawn through a wet solution of metallic salts, that is, tin or copper, tofacilitate drawing and to enhance the appearance and surface characteristics of the finished wire, and not to provide the propertiesof a co
43、ated wire.medium-hard drawn wireas applied to copper wire, having tensile strength less than the minimum for hard-drawn wire, butgreater than the maximum for soft wire.membera group of wires stranded together for combination with other stranded groups into a multiple-membered conductor.messenger wir
44、ea metallic supporting member either solid or stranded which may also perform the function of a conductor.mila unit of length equal to 11000 of an inch 0.0254 mm.nominal, adjname or identifying value of a measurable property by which a conductor or component or property of a conductoris identified,
45、and to which tolerances are applied.non-specular (NS)nonreflective matte grey surface finish for aluminum conductors.parallel-core conductorsee concentric-lay conductor.percent conductivitythe ratio of the resistivity of the International Annealed Copper Standard (IACS) at 20C to the resistivityof a
46、 material at 20C, expressed in percent. Results are calculated on a weight basis or volume basis and so specified.plain conductora conductor made up of one or more plain wires of the same metal.plain wirewire consisting of one metal only.rated strengththe strength in tension of a stranded conductor
47、calculated in accordance with specification requirements.resistance4the scaler property of an electric circuit or of any body that may be used as part of an electric circuit whichdetermines for a given current the rate at which electric energy is converted into heat or radiant energy and which has a
48、 valuesuch that the product of the resistance and the square of the current gives the rate of conversion of energy.In a dc circuit:P 5I 2Rwhere:P = power, W,I = current, A, andR = resistance, .resistivitythe electrical resistance of a body of unit length, and unit cross-sectional area or unit weight
49、. B193rope-lay conductorsee concentric-lay conductor.self-damping conductora conductor with internal vibration damping properties which will protect itself from damaging strainscaused by aeolian vibration.4 From or adapted from American National Standard Definitions of Electrical Terms (ANSI C42.351957) published by the Institute of Electrical and ElectronicsEngineers, Inc. (IEEE), 445 Hoes Ln., P.O.
