标准摘要
[中文适用范围]： 本文件规定了三相交流系统中两个项目之间相位差的指定方法和规则。这些名称旨在应用于工业装置、设备和产品的技术文件，以及标记 [外文原描述]： IEC 60152:2021 specifies methods and rules for the designation of phase difference between two items in a three-phase AC system. The designations are intended to be applied in the technical documentation of industrial installations, equipment, and products, and also on markings of equipment and products. IEC 60152:2021 cancels and replaces the first edition published in 1963. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the title has been updated to reflect the content of the document; b) the concept of identifying conductors with hour number has been removed as the concept is considered out of date and other means for identifying conductors exists; c) definition of hour number (clock number) and phase difference introduced.
英文名称Designation of phase differences by hour numbers in three-phase AC systems