架空电导体.绞合裸导体的计算方法

[中文适用范围]： 本文件（技术报告）提供了关于IEC 61089中规定的以及其它铝和铝钢导线的信息。此类信息包括导线的特性和实用的计算方法。本章包括以下内容：导线的载流量：计算方法和典型示例；交流电阻、电感和电容电抗；导线伸长：热数据和应力 - 应变数据；导线蠕变；高温下铝线强度的损失。注意，本文件未讨论计算导线特性的所有理论和可用方法，而是为用户提供提供可接受精度的简单方法。 [外文原描述]： IEC 61597:2021(E) which is a Technical Report provides information with regard to conductors specified in IEC 61089 and other aluminium and aluminium steel conductors. Such information includes properties of conductors and useful methods of calculation. The following chapters are included in this document. – current carrying capacity of conductors: Calculation method and typical example – alternating current resistance, inductive and capacitive reactances – elongation of conductors: Thermal and stress-strain data – conductor creep – loss of strength of aluminium wires due to high temperatures It is noted that this document does not discuss all theories and available methods for calculating conductor properties, but provides users with simple methods that provide acceptable accuracies. This second edition cancels and replaces the first edition published in 1995. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Addition of Clause 2 and Clause 3 since the “Normative references” and “Terms and definitions” clauses are mandatory elements of the text according to the new IEC template. b) In Clause 6, addition of new kinds of aluminium alloy and aluminium clad steel and their values of temperature coefficients of resistance. c) In Clause 6, addition of guidelines for the calculation of AC resistance taken into account hysteresis and eddy current losses. d) In Clause 7, addition of the values of coefficient of linear expansion of aluminium alloy conductor aluminium-clad steel reinforced series. e) Deletion of Clause 8 “Calculation of maximum conductor length on drums” in the last version. f) Annex A, replaced by “A practical example of CCC calculation”. g) Annex B, replaced by “Indicative conditions for CCC calculation”.