1.1 本规范涵盖由铝1350和8000系列铝合金圆导线制成的裸组合单向绞合导线，用于电气绝缘导线。回火状态下的铝1350线-H19（超硬）、-H16或-H26( 3. / 4. 硬）、-H14或-H24( 1. / 2. 硬），和-H142或-H242( 1. / 2. 硬）和8000系列铝合金线材，温度为“0”和H1X或H2X。这些导线应由中心芯线构成，中心芯线由两层螺旋敷设的导线围绕，外径等于压缩绞合等效导线。 注1: 就本规范而言，组合单向导体的定义如下:中心芯线由一层六根直径与芯线相同的螺旋敷设导线包围，螺旋敷设外层包含六根较小的导线，这些导线在与下层导线直径相同的六根导线之间交替。两层具有相同的铺设长度和方向（参见 图1 )。 图1 导线横截面 1.1.1 就本规范而言，正常导体分类（AA、A、B、C级）不适用，因为这些导体用于后续绝缘。 应使用描述性术语组合单股绞线代替导线分类( 注2 和 注3 )。 注2: 在1975年之前，铝1350被指定为EC铝。 注3: 铝和回火名称符合ANSI标准H35.1。铝1350对应于符合规程的统一编号系统A91350 E527 8000系列铝合金的统一编号系统合金名称 E527 在规范的表1中列出 B800 。 1.2 以国际单位制或英寸磅单位表示的数值应单独视为标准。 每个系统中规定的值可能不是完全相等的；因此，每个系统应独立使用。将两个系统的值合并可能导致不符合标准。 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。

1.1 This specification covers bare combination unilay-stranded conductors made from round wires of aluminum 1350 and 8000 series of aluminum alloys, for insulated conductors for electrical purposes. Aluminum 1350 wires in tempers -H19 (extra hard), -H16 or -H26 ( 3 / 4 hard), -H14 or -H24 ( 1 / 2 hard), and -H142 or -H242 ( 1 / 2 hard) and 8000 series aluminum alloys wires in tempers “0” and H1X or H2X are permitted. These conductors shall be constructed with a central core wire surrounded by two layers of helically laid wires, resulting in an outer diameter equal to the compressed-stranded equivalent conductors. Note 1: For the purpose of this specification, combination unilay conductor is defined as follows: a central core wire surrounded by a layer of six helically laid wires of the same diameter as the core wire with a helically laid outer layer containing six smaller wires alternated between six wires of the same diameter as the wires in the layer underneath. Both layers have a common length and direction of lay (see Fig. 1 ). FIG. 1 Cross Section of Conductor 1.1.1 For the purpose of this specification, normal conductor classification (Class AA, A, B, C) is not applicable, as these conductors are intended for subsequent insulation. The descriptive term combination unilay-stranded shall be used in place of conductor classification ( Note 2 and Note 3 ). Note 2: Prior to 1975, aluminum 1350 was designated as EC aluminum. Note 3: The aluminum and temper designations conform to ANSI Standard H35.1. Aluminum 1350 corresponds to Unified Numbering System A91350 in accordance with Practice E527 . Unified Numbering System alloy designations for 8000 Series aluminum alloys in accordance with Practice E527 are listed in Table number 1 of Specification B800 . 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 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.