IEC 61439-5:20 23 RLV包含官方IEC国际标准及其红线版本。Redline版本仅提供英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 IEC 61439-5:20 23定义了公共电网配电组件(PENDA)的具体要求。PENDAs具有以下标准: -用于额定电压不超过1 000 V AC的三相系统（典型配电网见图101）和不超过1 500 V DC的DC系统中的电能分配； -静止的； -本文件不包括开放式组件； -适合安装在只有技术人员才能进入使用的地方，但室外型可以安装在普通人可以进入的地方 -拟用于公共电网的能源分配； -室内使用:安装在变电站内部的组件； -户外使用:包含适合露天安装的外壳的组件。 这第三版取消并取代了2014年出版的第二版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: a)当外壳由金属材料制成时，省略了在-25°C下进行机械测试的要求； b)增加发电供应和电动汽车充电应用的假设负载系数； c)当PENDA用于具有单独的高压和低压接地的配电变电站时，进行额外的介电测试； d)进一步澄清用于设计验证的代表性样品。

IEC 61439-5:2023 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 61439-5:2023 defines the specific requirements for public electricity network distribution assemblies (PENDAs). PENDAs have the following criteria:
- used for the distribution of electrical energy in three phase systems for which the rated voltage does not exceed 1 000 V AC (see Figure 101 for a typical distribution network) and DC systems not exceeding 1 500 V DC;
- stationary;
- open type assemblies are not covered by this document;
- suitable for installation in places where only skilled persons have access for their use, however, outdoor types can be installed in situations that are accessible to ordinary persons
- intended for use in energy distribution in public power grids;
- indoor use: assemblies for installation inside of electric power substations;
- outdoor use: assemblies containing an enclosure suitable for open air installation.
This third edition cancels and replaces the second edition published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) omission of the requirement to conduct mechanical tests at -25 °C when enclosures are made of a metallic material;
b) addition of assumed loading factors generation supplies and electric vehicle charging applications;
c) additional dielectric tests when a PENDA is used in a distribution substation with separate HV and LV earths;
d) further clarification of representative samples for design verification.