标准摘要
[中文适用范围]： 本部分IEC 60287提供了一种计算并联布置的单芯电缆中的相电流和循环电流损耗的方法。 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。可以计算任何护套连接布置的相电流。对于护套损耗的计算，假设护套在两端连接。在IEC 60287-1-2中给出了计算两个电路在平面布置中的护套涡流损耗的方法。 [外文原描述]： 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.
英文名称Electric cables - Calculation of the current rating - Part 1-3: Current rating equations (100 % load factor) and calculation of losses - Current sharing between parallel single-core cables and calculation of circulating current losses