IEC 61597:2021（E）是一份技术报告，提供了有关IEC 61089中规定的导体以及其他铝和铝钢导体的信息。这些信息包括导体的性质和有用的计算方法。本文档包括以下章节。 -导体的载流量:计算方法和典型实例 -交流电阻、电感和容抗 -导体的伸长率:热和应力应变数据 -导体蠕变 -高温导致铝线强度损失 应当注意，本文档不讨论用于计算导体特性的所有理论和可用方法，而是为用户提供可接受精度的简单方法。 这第二版取消并取代了1995年出版的第一版。本版构成技术修订版。 与上一版相比，此版本包括以下重大技术变更: a)增加第2条和第3条，因为根据新的IEC模板，“规范性参考”和“术语和定义”条款是文本的强制性要素。 b)在第6条中，增加了新型铝合金和铝包钢及其电阻温度系数值。 c)在第6条中，增加了考虑磁滞和涡流损耗的交流电阻计算指南。 d)在条款7中，增加铝合金导体铝包钢增强系列的线膨胀系数值。 e)删除上一版本中的第8条“鼓上最大导体长度的计算”。 f)附件A，改为"CCC计算实例"。 g)附件B，改为"CCC计算的指示性条件"。

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”.