前言:这是CAN/CSA-C61089《圆线同心敷设架空电绞合导线》的第二版，采用了标题相同的CEI/IEC（国际电工委员会/国际电工委员会）标准1089（第一版，1991-05），但有加拿大的偏差。它取代了2003年发布的前一版本CAN/CSA-C61089。范围:1.1本标准规定了由以下任何金属线组合而成的圆线同心敷设架空电绞合导线的电气和机械特性:（a）铝线:（i）符合CAN/CSA-C60889的冷拔铝，符合CAN/CSA-C60104的指定A1（ii）铝合金AA6101-T81，根据CAN/CSA指定A2（iii）铝合金AA6101-T83- C60104，根据CAN/CSA-C60888指定为A4（b）镀锌钢丝:（i）常规强度钢，指定为S1A或S1B，其中A和b为镀锌等级（ii）高强度钢，指定为S2A或S2B（iii）超高强度钢，指定为S3A（c）铝包钢线，根据CAN/CSA-C61232，使用20级，指定为20SA A类，对应于20.3%IACS的电导率。1.2本标准涵盖的导线名称包括但不限于（a）A1、A2、A4（b）A1/S1A、A1/S1B、A1/S2A、A1/S2B、A1/S3A（c）A2/S1A、A2/S1B、A2/S3A（d）A1/20SA（e）A1/A2、A1/A4

Preface:This is the second edition of CAN/CSA-C61089,Round wire concentric lay overhead electrical stranded conductors, which is an adoption, with Canadian deviations, of the identically titled CEI/IEC (Commission Électrotechnique Internationale/International Electrotechnical Commission) Standard 1089 (first edition, 1991-05). It supersedes the previous edition published in 2003 as CAN/CSA-C61089.Scope:1.1This Standard specifies the electrical and mechanical characteristics of round wire concentric lay overhead electrical stranded conductors made of combinations of any of the following metal wires:(a) aluminum wires:(i) hard-drawn aluminum in accordance with CAN/CSA-C60889, designated A1(ii) aluminum alloy AA6101-T81 in accordance with CAN/CSA-C60104, designated A2(iii) aluminum alloy AA6101-T83 in accordance with CAN/CSA-C60104, designated A4(b) zinc-coated steel wires in accordance with CAN/CSA-C60888:(i) regular strength steel, designated S1A or S1B, where A and B are zinc coating classes(ii) high strength steel, designated S2A or S2B(iii) extra high strength steel, designated S3A(c) aluminum-clad steel wires in accordance with CAN/CSA-C61232 using Class 20, designated 20SA Type A, corresponding to a conductivity of 20.3% IACS.1.2The conductor designations covered by this Standard include but are not limited to(a) A1, A2, A4(b) A1/S1A, A1/S1B, A1/S2A, A1/S2B, A1/S3A(c) A2/S1A, A2/S1B, A2/S3A(d) A1/20SA(e) A1/A2, A1/A4