绝缘配合.第1部分:定义、原则和规则

[中文适用范围]： 本部分 IEC 60071 适用于设备最高电压超过1 kV的三相交流系统。它规定了设备及其安装系统的相间、相对地和纵向绝缘的额定耐受电压的选择程序。它还列出了标准耐受电压，从中选择额定耐受电压。 本文件描述了所选耐受电压与设备最高电压的关联。这种关联仅用于绝缘协调目的。本文件不涵盖人类安全要求。 尽管本文件的原则也适用于输电线路绝缘，但其耐受电压值可能与标准额定耐受电压不同。 设备委员会负责根据本文件的建议，指定适合相关设备的额定耐受电压和测试程序。 注：在IEC 60071-2中，详细说明了本文件中给出的所有绝缘协调规则，特别是标准额定耐受电压与设备最高电压的关联。当同一设备最高电压关联多组标准额定耐受电压时，提供了选择最合适组的指南。 本水平标准主要供技术委员会根据IEC指南108制定的原则在标准准备中使用。 技术委员会的职责之一是在适用的情况下，在其出版物准备中使用水平标准。除非在相关出版物中特别引用或包含，否则本水平标准的内容不适用。 [外文原描述]： IEC 60071-1:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60071-1:2019 applies to three-phase AC systems having a highest voltage for equipment above 1 kV. It specifies the procedure for the selection of the rated withstand voltages for the phase-to-earth, phase-to-phase and longitudinal insulation of the equipment and the installations of these systems. It also gives the lists of the standard withstand voltages from which the rated withstand voltages are selected. This document describes that the selected withstand voltages are associated with the highest voltage for equipment. This association is for insulation co-ordination purposes only. The requirements for human safety are not covered by this document. Although the principles of this document also apply to transmission line insulation, the values of their withstand voltages can be different from the standard rated withstand voltages. The apparatus committees are responsible for specifying the rated withstand voltages and the test procedures suitable for the relevant equipment taking into consideration the recommendations of this document. NOTE In IEC 60071-2, all rules for insulation co‑ordination given in this document are justified in detail, in particular the association of the standard rated withstand voltages with the highest voltage for equipment. When more than one set of standard rated withstand voltages is associated with the same highest voltage for equipment, guidance is provided for the selection of the most suitable set. The main changes from the previous edition are as follows: - all references are updated to current IEC standards, and the bibliography is deleted; - some definitions are clarified in order to avoid overlapping and ensure clear understanding; - letter symbols are changed and corrected in order to keep the consistency with relevant IEC standards; - some titles are changed to clarify understanding (see Clauses A.2, A.3 and Annex B). It has the status of a horizontal standard in accordance with IEC Guide 108 .