IEC 60071-2:2023 绝缘配合.第2部分:应用指南

标准编号：IEC 60071-2:2023

中文名称：绝缘配合.第2部分:应用指南

英文名称：Insulation co-ordination - Part 2: Application guidelines

发布日期：2023-05-24

标准范围

IEC 60071-2:20 23作为IEC 60071-2:20 23 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 60071-2:20 23构成应用指南并处理三相交流系统设备或装置绝缘等级的选择。其目的是为IEC 60071范围I和II的额定耐压的确定提供指导？1并证明这些额定值与设备的标准化最高电压的关联是合理的。该协会仅用于绝缘协调目的。本文件未涵盖人体安全要求。本文件涵盖标称电压在1 kV以上的三相交流系统，相-接地、相间和纵向绝缘。根据IEC指南108，它具有水平标准的地位。与上一版相比，此版本包括以下重大技术变更:a)增加了第4条管理绝缘协调的概念。b)修改了第5.3款，并增加了第5.4款详细模拟，因为它在最近的绝缘协调实践中得到了广泛应用。c)在第9条中增加了电缆线路和GIL/GIB的特殊考虑。d)增加了附件K（资料性）线路并联电抗器在限制高压架空输电线路TOV和SFO中的应用。e)增加了附件L（资料性）雷击率和雷电停运率的计算。

IEC 60071-2:2023 is available as IEC 60071-2:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60071-2:2023 constitutes application guidelines and deals with the selection of insulation levels of equipment or installations for three-phase AC systems. Its aim is to give guidance for the determination of the rated withstand voltages for ranges I and II of IEC 60071？1 and to justify the association of these rated values with the standardized highest voltages for equipment. This association is for insulation co-ordination purposes only. The requirements for human safety are not covered by this document. This document covers three-phase AC systems with nominal voltages above 1 kV, phase-to-earth, phase-to-phase and longitudinal insulation. It has the status of a horizontal standard in accordance with IEC Guide 108. This edition includes the following significant technical changes with respect to the previous edition:
a) Clause 4 Concepts governing the insulation co-ordination has been added.
b) Subclause 5.3 has been revised, and Subclause 5.4 Detailed simulation has been added because it is widely applied in the recent practices of insulation coordination.
c) Special considerations for cable line and GIL/GIB have been added in Clause 9.
d) Annex K (informative) Application of line shunt reactor to limitation of TOV and SFO in high voltage overhead transmission lines has been added.
e) Annex L (informative) Calculation of lightning stroke rate and lightning outage rate has been added.

标准预览图