1.1 本规范涵盖了电气用普通裸圆包铜钢丝制成的裸同心绞合导线。 1.2 就本规范而言，导线分类如下:40 HS级、30 HS级、30 EHS级、40 DSA级和30 DSA级。 本规范涵盖的等级对应于以下商业名称: 等级40 HS， 高强度，40 % 电导率，冷拔 等级30 HS， 高强度，30 % 电导率，冷拔 30级EHS， 超高强度，30 % 电导率，冷拔 40级DSA， 40 % 导电性，软退火 30级DSA， 30 % 导电性，软退火 1.3 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers bare concentric-lay-stranded conductors made from bare round copper-clad steel wires for general use for electrical purposes. 1.2 For the purpose of this specification, conductors are classified as follows: Grade 40 HS, Grade 30 HS, Grade 30 EHS, Grade 40 DSA, and Grade 30 DSA. The grades covered by this specification correspond to the following commercial designations: Grade 40 HS, High Strength, 40 % Conductivity, Hard Drawn Grade 30 HS, High Strength, 30 % Conductivity, Hard Drawn Grade 30 EHS, Extra High Strength, 30 % Conductivity, Hard Drawn Grade 40 DSA, 40 % Conductivity, Dead Soft Annealed Grade 30 DSA, 30 % Conductivity, Dead Soft Annealed 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.