IEC 60287-1-3:20 23 CMV包含官方标准及其注释版本。注释版本为您提供了一种快速简单的方法来比较IEC 60287-1-3:20 23版2.0和之前的IEC 60287-1-3:20 02版1.0之间的所有更改。此外，还提供了IEC TC 20专家的意见，以解释最相关变更的原因，或澄清内容的任何部分。 IEC 60287-1-3:20 23提供了一种计算并联布置的单芯电缆中相电流和环流损耗的方法。本文档中描述的方法可用于任何物理布局中每相并联的任何数量的电缆。可以针对鞘接合的任何布置来计算相电流。为了计算护套损耗，假设护套在两端粘合。IEC 60287-1-2给出了一种计算扁平结构两个电路中鞘层涡流损耗的方法。

IEC 60287-1-3:2023 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 60287-1-3:2023 edition 2.0 and the previous IEC 60287-1-3:2002 edition 1.0. Furthermore, comments from IEC TC 20 experts are provided to explain the reasons of the most relevant changes, or to clarify any part of the content.

IEC 60287-1-3:2023 provides a method for calculating the phase currents and circulating current losses in single-core cables arranged in parallel. The method described in this document can be used for any number of cables per phase in parallel in any physical layout. The phase currents can be calculated for any arrangement of sheath bonding. For the calculation of sheath losses, it is assumed that the sheaths are bonded at both ends. A method for calculating sheath eddy current losses in two circuits in flat formation is given in IEC 60287-1-2.