标准编号:	GB/T 17048-2017
中文名称:	架空绞线用硬铝线
英文名称:	Hard-drawn aluminium wire for overhead line conductors
中标分类:	K11    裸电线
行业分类:	GB    国家标准
ICS分类:	29.060.10 29.060.10    电线 29.060.10
发布机构:	中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会
发布日期:	2017-11-01
实施日期:	2018-5-1
标准状态:	现行
替代旧标准:	GB/T 17048-2009 架空绞线用硬铝线
翻译语言:	英文
文件格式:	PDF
中文字符数:	11000 字
翻译价格(元):	660.00 元
交付时间:	付款后 1 个工作日

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.



This standard is developed in accordance with the rules given in GB/T 1.1-2009.



This standard replaces GB/T 17048-2009 Hard-drawn aluminium wire for overhead line conductors, and the following main technical changes have been made with respect to GB/T 17048-2009:



——The resistance level and section shape of hard-drawn aluminum wire has been added in the scope of application (see clause 1; 1.1 of Edition 2009);



——The resistivity and temperature coefficient of resistance of hard-drawn aluminium wires of different resistance levels at 20℃ have been added (see clause 3);



——The equivalent diameter and the tolerance on the equivalent diameter of the hard-drawn aluminium molded wire have been added (see clause 6);



——The mechanical properties of such hard-drawn aluminium round wire and hard-drawn aluminium molded wire as of different models have been added (see 11.1);



——In Annex A, A.1 "Code” has been changed to “Category code", and A.1.1 and A.1.2 have been deleted; the representation method and example of hard-drawn aluminium round wire have been modified, and the representation method and example of hard-drawn aluminium molded wire added (see Annex A; Annex A of Edition 2009).



This standard has been redrafted and modified in relation to IEC 60889: 1987 Hard-drawn aluminium wire for overhead line conductors.



Multiple structural adjustments have been made to this standard with respect to IEC 60889: 1987. Corresponding numbering equivalent clauses between this standard and IEC 60889: 1987 is given in Annex B.



There are technical deviations between this standard and IEC 60889: 1987, which are made to meet the practical needs of China's power industry:



——The resistance level of hard-drawn aluminium wire, the hard-drawn aluminium molded wire as well as its corresponding diameter range have been added in clause 1;



——Clause 2 "Normative references" has been added;



——The resistance level and corresponding electrical property requirements of Hard-drawn aluminium wire have been added In clause 3;



——The requirements for equivalent diameter and tolerance on the equivalent diameter of hard-drawn aluminium molded wire have been added in clause 6;



——The mechanical properties of hard-drawn aluminium molded wire have been added in 11.1;



——Annex A "Method for representing models of hard-drawn aluminium wires for overhead line conductors” has been added for the convenience of application of this standard.



This standard was proposed by China Electrical Equipment Industrial Association.



This standard is under the jurisdiction of the SAC/TC 422 National Technical Committee on Bare Wire of Standardization Administration of China.



The previous editions of this standard are as follows:



——GB/T 17048-1997 and GB/T 17048-2009.









Hard-drawn aluminium wire for overhead line conductors



1 Scope



This standard specifies the mechanical and electrical properties of hard-drawn aluminium round wire with nominal diameter ranging from 1.25 mm to 5.00 mm and hard-drawn aluminium molded wire with nominal equivalent diameter ranging from 2.00 mm to 6.00 mm. Hard-drawn aluminium wire is classified into four resistance levels, namely L, L1, L2 and L3. The hard-drawn aluminium wire is classified by section shape into round wire and molded wire.



This standard is applicable to hard-drawn aluminium wires for the manufacture of stranded conductors for overhead power transmission purposes.



2 Normative references



The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.



GB/T 3048.2-2007 Test methods for electrical properties of electric cables and wires - Part 2: Test of electrical resistivity of metallic materials (IEC 60468：1974，MOD)

GB/T 4909.2-2009 Test methods for bare wires - Part 2: Measurement of dimensions

GB/T 4909.3-2009 Test methods for bare wires - Part 3: Tensile test

GB/T 4909.7-2009 Test methods for bare wires - Part 7: Mandrel winding test



3 Electrical properties



The electrical properties of the hard-drawn aluminium wire shall meet those specified in Table 1. See Annex A for the method for representing models of hard-drawn aluminium wire.



 

Table 1 DC resistivity and temperature coefficient of resistance at 20℃

Model Maximum DC resistivity at 20℃

Ω·mm2/m(％IACS) Temperature coefficient of resistance at 20℃

1/℃

L, LX1 and LX2 0.028264 (61.0) 0.00403

L1, L1X1 and L1X2 0.028034 (61.5) 0.00407

L2, L2X1 and L2X2 0.027808 (62.0) 0.00410

L3, L3X1 and L3X2 0.027586 (62.5) 0.00413



For calculation purposes the following physical data for hard-drawn aluminium wire at 20℃ shall be used.



——Density: 2.703 kg/dm3;



——Coefficient of linear expansion: 23×106(1/℃).



4 Material



The wires shall be of aluminium of the requisite purity to achieve the mechanical and electrical properties specified hereinafter. The aluminium content shall be not less than 99.5%.



5 Surface quality



The wires shall be smooth in surface and free from all imperfections not consistent with good commodity.



6 Diameter and tolerance on diameter



The nominal diameter of the hard-drawn aluminium round wire as well as the nominal equivalent diameter of the hard-drawn aluminium molded wire shall be expressed to two decimal places.



The difference between each measured value and the nominal value of the diameter of hard-drawn aluminium round wire shall not be greater than the corresponding value specified in Table 2.



Table 2 Diameter and tolerance on diameter of hard-drawn aluminium round wire

Nominal diameter d

mm Tolerance on diameter

mm

d≤3.00

d>3.00 ±0.03

±1%d



For the purpose of checking compliance with the above requirement, the diameter shall be determined by two measurements at right angles taken at the same cross-section. The difference between each measured value and the nominal value of the equivalent diameter of the hard-drawn aluminium molded wire shall not be greater than the corresponding value specified in Table 3.

Foreword i
1 Scope
2 Normative references
3 Electrical properties
4 Material
5 Surface quality
6 Diameter and tolerance on diameter
7 Length and tolerance on length
8 Joints
9 Sampling
10 Place of testing
11 Mechanical tests
12 Resistivity test
13 Certificate of compliance
Annex A (Informative) Method for representing models of hard-drawn aluminimum wires for overhead line conductors
Annex B (Informative) Corresponding numbering equivalent clauses between this standard and IEC 60889:
Table 1 DC resistivity and temperature coefficient of resistance at 20℃
Table 2 Diameter and tolerance on diameter of hard-drawn aluminium round wire
Table 3 Equivalent diameter and tolerance on equivalent diameter of hard-drawn aluminium molded wire
Table 4 Mechanical properties of hard-drawn aluminium round wire
Table 5 Mechanical properties of hard-drawn aluminium molded wire
Table B.1 Corresponding numbering equivalent clauses between this standard and IEC 60889:

ICS 29.060.10
K 11
中华人民共和国国家标准
CB/T 17048—2017
代替GB/T 17048—2009
架空绞线用硬铝线
Hard-drawn aluminium wire for overhead line conductors
(IEC 60889：1987，MOD)
2017-11-01发布 2018-05-01实施
中华人民共和国国家质量监督检验检疫总局
中国国家标准化管理委员会
发布
前言
本标准按照GB/T 1.1—2009给出的规则起草。
本标准代替GB/T 17048—2009《架空绞线用硬铝线》，与GB/T 17048—2009相比主要技术变化如下：
——适用范围增加了硬铝线电阻等级和截面形状内容(见第1章，2009年版的1.1)；
——增加了硬铝线不同电阻等级的20℃时的电阻率和电阻温度系数(见第3章)；
——增加了硬铝型线的等效直径和等效直径偏差(见第6章)；
——增加了不同型号的硬铝圆线和硬铝型线的机械性能(见11.1)；
——修改了附录A中A.1“代号”为“类别代号”，删除了A.1.1和A，1.2；修改了硬铝圆线的表示方法及示例，增加了硬铝型线的表示方法及示例(见附录A，2009年版的附录A)。
本标准使用重新起草法修改采用IEC 60889：1987《架空绞线用硬铝线》。
本标准与IEC 60889：1987相比.在结构上有较多调整。附录B中列出了本标准与IEC 60889：1987的章条编号对照一览表。
本标准与IEC 60889：1987的技术性差异如下，以满足我国电力工业现实需要：
——第1章增加了硬铝线的电阻等级，增加了硬铝型线及其相应的直径范围；
——增加了第2章规范性引用文件；
——第3章增加了硬铝线的电阻等级及相应的电性能要求；
——第6章增加了硬铝型线的硬铝型线的等效直径及等效直径偏差要求；
——11.1中增加了硬铝型线的机械性能；
——增加了附录A“架空绞线用硬铝线产品型号表示方法”，以利于本标准使用。
本标准由中国电器工业协会提出。
本标准由全国裸电线标准化技术委员会(SAC/TC 422)归口。
本标准所代替标准的历次版本发布情况为：
——GB/T 17048—1997、GB/T 17048—2009。
架空绞线用硬铝线
1 范围
本标准规定了标称直径范围为1.25 mm～5.00 mm硬铝圆线和标称等效直径范围为2.00 mm～6.00 mm硬铝型线的机械性能和电性能。硬铝线分为4个电阻等级，分别用L、L1、L2、L3表示。截面形状分为圆线和型线两种类别。
本标准适用于架空输电用绞线的硬铝线。
2规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改单)适用于本文件。
GB/T 3048.2—2007电线电缆电性能试验方法 第2部分：金属材料电阻率试验(IEC 60468：1974，MOD)
GB/T 4909.2—2009 裸电线试验方法 第2部分：尺寸测量
GB/T 4909.3—2009 裸电线试验方法 第3部分：拉力试验
GB/T 4909.7—2009裸电线试验方法 第7部分：卷绕试验
3 电性能
硬铝线的电性能应符合表1的规定。硬铝线的型号表示方法参见附录A。
表1 20℃时的直流电阻率及电阻温度系数
型号 20℃时的直流电阻率，最大值
Ω·mm2/m(％IACS) 20℃时的电阻温度系数
1/℃
L、LX1、LX2 0.028 264(61.0) 0.004 03
L1、L1X1、L1X2 0.028 034(61.5) 0.004 07
L2、L2X1、L2X2 0.027 808(62.0) 0.004 10
L3、L3X1、L3X2 0.027 586(62.5) 0.004 13

计算时，硬铝线20℃时的物理数据应取下列数值：
——密度：2.703 kg/dm3；
——线膨胀系数：23×106(1/℃)。
4 材料
硬铝线应由铝的含量不小于99.5％纯度的铝制成，以达到本标准规定的机械性能和电气性能。
5表面质量
硬铝线表面应光洁，并不应有与良好的商品不相称的任何缺陷。
6直径和直径偏差
硬铝圆线的标称直径和硬铝型线的标称等效直径，精确到小数点后2位。
硬铝圆线直径的每次测量值与标称值之差应不大于表2规定的相应数值。
表2 硬铝圆线的直径及直径偏差
标称直径d
mm 直径偏差
mm
d≤3.00
d>3.00 ±0.03
±1％d

为检验硬铝圆线直径是否符合上述要求，直径应在同一截面且互相垂直的方向上测量两次。硬铝型线等效直径的每次测量值与标称值之差应不大于表3规定的相应数值。
表3硬铝型线的等效直径及等效直径偏差
标称等效直径d
mm 直径偏差
mm
2.00～6.00 ±2％d

硬铝型线等效直径的测量方法按照GB/T 4909.2—2009的规定进行。
7长度和长度偏差
每圈或每盘硬铝线的标称长度及其误差应由供需双方协商确定。
8 接头
硬铝线在最后拉制前允许有接头。但如果符合下述全部条件，成品硬铝线也允许有接头：
a)成圈硬铝线重500 kg及以上；
b)该成圈硬铝线中的接头不超过一个；
c)含一个接头的该种成圈硬铝线的圈数不得超过总圈数的10％；
d)当用户要求时，制造厂应提供证明，表明接头的抗拉强度不小于130 MPa。
含一个接头的成圈成品硬铝线应在接头处有明显的标记，并在合格证上注明。
9 取样
第11章和第12章规定的试验用试样应由制造厂从任意一批交付的硬铝线中抽取10％的单独线段。取样的比例也可由供需双方协商确定。
10试验地点
除非供需双方在订货时另有协议，所有试验均应在制造厂内进行。
11机械性能试验
11.1拉力试验
按第9章规定的取样方法，从每个试样上截取一个试件，按GB/T 4909.3—2009的规定进行拉力试验。拉力试验机夹头的移动速度不应小于25 mm/min，也不应大于100 mm/min。
硬铝圆线的抗拉强度应符合表4的规定。
表4硬铝圆线的机械性能
型号 标称直径d
mm 抗拉强度
MPa
最小值
L
L1 d＝1.25
1.25