GB/T 3953-2024Round copper wire for electrical purposes (English PDF)

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020 “Directives for standardization — Part 1: Rules for the structure and drafting of standardizing documents”.

This document replaces GB/T 3953-2009 “Round copper wire for electrical purposes”. Compared with GB/T 3953-2009, apart from structural adjustments and editorial changes, the main technical changes are as follows:

— added terms and definitions (see Clause 3);

— added the type, the specification and the technical requirements of class 1 soft round copper wire (see 4.1, 4.3 and Clause 5);

— changed the type name of extra-hard round copper wire to class 1 hard round copper wire (see 4.1; 3.1 of the 2009 edition);

— added the designation of the multiline structure, its technical requirements and its test methods (see 4.2, 5.2 and 6.2);

— changed the designation of round copper wire for electrical purposes (see 4.4; 3.3 of the 2009 edition);

— changed the specification range and the dimensional deviations of round copper wire for electrical purposes (see 4.3 and 5.4; 3.2 and Clause 5 of the 2009 edition);

— changed the technical requirements and the test methods for the surface quality of round copper wire for electrical purposes (see 5.3 and 6.2; Clause 8 of the 2009 edition);

— changed the technical requirements for the tensile strength and the elongation of some specifications (see 5.5; Clause 6 of the 2009 edition);

— changed the technical requirements for the volume resistivity of some specifications of hard round copper wire (see 5.6; Clause 7 of the 2009 edition);

— changed the delivery requirements for round copper wire for electrical purposes (see Clause 7; Clause 9 of the 2009 edition);

— changed the acceptance rules for round copper wire for electrical purposes and added the acceptance rules for round copper wire of multiline structure (see Clause 8; Clause 10 of the 2009 edition);

— changed the requirements for the packaging and the marking of round copper wire for electrical purposes (see Clause 9; Clause 10 of the 2009 edition).

Attention is drawn to the possibility that some of the content of this document may be the subject of patent rights. The issuing body of this document bears no responsibility for identifying such patent rights.

This document was proposed by the China Electrical Equipment Industry Association.

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

Drafting organizations: Shanghai Electric Cable Research Institute Co., Ltd.; Shanghai Guolan Testing Co., Ltd.; Jiangdong Alloy Technology Co., Ltd.; Jiangsu Jiangrun Copper Co., Ltd.; Far East Holding Group Co., Ltd.; Zhenxiong Copper Group Co., Ltd.; Jiangsu Baosheng Precision Conductor Co., Ltd.; Shanghai Qifan Cable Co., Ltd.; Tongling Jingda Special Magnet Wire Co., Ltd.; Zhuhai Gree Electrical Engineering Co., Ltd.; Jinchuan Group Wire and Cable Co., Ltd.; Jiangsu Xinhai High Conductivity New Material Co., Ltd.; Changzhou Tongtai High Conductivity New Material Co., Ltd.; Kunming Cable Group Kundiangong Cable Co., Ltd.; Fujian Nanping Sun Cable Co., Ltd.; Yunnan Duobao Cable Group Co., Ltd.; Futong Showa Wire & Cable (Hangzhou) Co., Ltd.; Wuxi Jiangnan Cable Co., Ltd.; TBEA Xinjiang Cable Co., Ltd.; Tongling Nonferrous Tongguan Electric Co., Ltd.; Jiangxi Copper Group Copper Material Co., Ltd.; Guangdong Songtian Technology Co., Ltd.; Xi’an XD Optical Cable Co., Ltd.; Guangzhou Mingxing Cable Co., Ltd.; TBEA Shandong Luneng Taishan Cable Co., Ltd.; Jiangsu Dehui Electronic New Material Co., Ltd.; Guangdong Chuangxinfa Copper Co., Ltd.

Main drafters: Zhang Yongjia, Xu Rui, Yan Chen, Wu Junyang, Xu Jing, Zhang Wanli, Zhang Tizhen, Gao Zuohai, Su Baoxin, Ma Hongjie, Yang Guang, Geng Yaping, Dou Ying, Ning Gongkuo, Wu Minzhi, Zheng Xiaobin, Shen Xiaojun, Zhang Chuansheng, Zhang Jinyu, Liu Jie, Tang Yuanyuan, Chen Minghai, Xue Heng, Niu Kejing, Wang Shujuan, He Zhenyang, Guan Chiyao, Su Huaguang, Li Jun.

The editions of this document and of the document it replaces are as follows:

— first issued in 1983 as GB 3953-1983;

— first revised in 2009 as GB/T 3953-2009;

— this is the second revision.

1 Scope

This document specifies the type, the structure, the specification, the designation, the technical requirements, the delivery requirements, the packaging, the storage, the transport and the marking of round copper wire for electrical purposes; it describes the test methods and establishes the acceptance rules.

This document applies to the manufacture, the testing and the application of round copper wire used in wires and cables, in electric machines and in other electrical and electronic devices.

2 Normative references

The contents of the following documents constitute indispensable provisions of this document through normative reference in the text. For dated references, only the edition corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 3048.2-2007 Test methods for electrical properties of electric cables and wires — Part 2: Test of resistivity of metallic materials · GB/T 3952 Copper wire rod for electrical purposes · GB/T 4909.1-2009 Test methods for bare wires — Part 1: General · 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 8170 Rules of rounding off for numerical values and expression and judgement of limiting values

3 Terms and definitions

For the purposes of this document, the terms and definitions given in GB/T 3048.2-2007, GB/T 4909.1-2009, GB/T 4909.2-2009 and GB/T 4909.3-2009 and the following apply.

4 Type, structure, specification and designation