首页 馆藏资源 舆情信息 标准服务 科研活动 关于我们
现行 ASTM B778-22
到馆提醒
收藏跟踪
购买正版
Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors (AAC/TW) 成形线紧凑同心绞合铝导线(AAC/TW)标准规范
发布日期: 2022-12-01
1.1 本规范涵盖了成型导线紧凑型同心绞合铝导体(AAC/TW)及其用作架空电导体的组件导线(说明 注1 和 注2 ). 1.2 除温度和电阻率外,以英寸-磅单位表示的值应视为标准值。英寸磅单位的SI当量可能是近似值。 注1: AAC/TW设计用于通过使用梯形导线(TW)增加给定直径导体的铝面积。导体由一根圆形铝线或七根铝线的中心芯组成- 由两层或多层梯形铝1350-H19线围绕的绞合紧密圆形芯。就本规范而言,所列尺寸是根据面积等于标准AAC特定尺寸的成品导体制成的表格( 表1 )或以固定的直径增量( 表2 )以便于导体选择。 注2: 铝和回火名称符合ANSI标准H 35.1.根据惯例,铝1350符合统一编号系统(UNS)A91350 第527页 . 1.3 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。
1.1 This specification covers shaped wire compact concentric-lay-stranded aluminum conductor (AAC/TW) and its component wires for use as overhead electrical conductors (Explanatory Note 1 and Note 2 ). 1.2 The values stated in inch-pound units are to be regarded as the standard with the exception of temperature and resistivity. The SI equivalents of inch-pound units may be approximate. Note 1: AAC/TW is designed to increase the aluminum area for a given diameter of conductor by the use of trapezoidally shaped wires (TW). The conductors consist of a central core of one round aluminum wire or a seven-strand compact round core surrounded by two or more layers of trapezoidal aluminum 1350-H19 wires. For the purposes of this specification, the sizes listed are tabulated on the basis of the finished conductor having an area equal to that of specific sizes of standard AAC ( Table 1 ) or in fixed diameter increments ( Table 2 ) so as to facilitate conductor selection. Note 2: The aluminum and temper designations conform to ANSI Standard H 35.1. Aluminum 1350 corresponds to Unified Numbering System (UNS) A91350 in accordance with Practice E527 . 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.
分类信息
关联关系
研制信息
归口单位: B01.07
相似标准/计划/法规