IEC 60939-3:20 24作为IEC 60939-3:20 24 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 60939-3:20 24涵盖了用于衰减电磁源产生的不需要的射频信号（例如噪声或干扰）。在一个外壳内或构建在形成紧凑实体的印刷电路板上的单通道和多通道滤波器都包括在本文件的范围内。本文件适用于用于电磁干扰抑制的无源滤波器单元，其安全测试是适当的。这意味着，当符合表B的强制性测试时，根据本文件指定的过滤器将连接到电源。1是必需的，或用于设备规范规定需要进行部分或全部这些安全试验的其他电路位置。本文件适用于无源滤波器单元，其将连接到标称电压不超过1 000 V AC、标称频率不超过400 Hz或1 500 V DC的交流电源或其他电源（DC或AC）。注:对于交流使用，IEC 60384-14适用于将连接到标称频率不超过100 Hz的交流电源的电容器。本文件涵盖设备过滤器（美国），但不涵盖设施过滤器、有线连接过滤器或直接插入式过滤器。这些其他过滤器将由另一个章节规范涵盖。 与上一版相比，此版本包括以下重大技术变更:a)安全和性能测试的单独条款； b)增加了在3相滤波器中使用多个X电容器桥接基本绝缘的注释； c)替代X和Y电容器的特性和条件现在在单独的子条款4.1中描述； d)爬电距离和间隙表已更新并符合最新版本的IEC 60938-2和IEC 60664-1； e)允许用于电感测量的电压测量(7.3)； f)增加了根据断开后剩余能量进行标记的要求； g)增加了用于IEC过滤器温度测试的CTL DSH 2044:2016的含量； h)增加了关于安全性试验所需样品温升的注释； i)更改附件A中电容器的索引，以避免索引名称和电容器类别之间的混淆； j)将测试从组1A移至组2。现在，1A组的样品需要提交，无需盆栽； k)根据ISO/IEC指令第2部分:2021对文件的所有部分进行了修订，并与其他类似类型的文件进行了协调。附件X包含条款/子条款编号变更的所有交叉引用。

IEC 60939-3:2024 is available as IEC 60939-3:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60939-3:2024 covers passive filters used to attenuate unwanted radio-frequency signals (such as noise or interference) generated from electromagnetic sources. Both single and multi-channel filters within one enclosure or which are built on a printed circuit board forming a compact entity are included within the scope of this document. This document applies to passive filter units for electromagnetic interference suppression for which safety tests are appropriate. This implies that filters specified according to this document will either be connected to mains supplies, when compliance with the mandatory tests of Table B.1 is necessary, or used in other circuit positions where the equipment specification specifies that some or all of these safety tests are required. This document applies to passive filter units, which will be connected to an AC mains or other supply (DC or AC) with a nominal voltage not exceeding 1 000 V AC, with a nominal frequency not exceeding 400 Hz, or 1 500 V DC. Note: For AC use, IEC 60384-14 applies to capacitors which will be connected to AC mains with a nominal frequency not exceeding 100 Hz. This document covers appliance filters (US) but does not cover facility filters, cord-connected filters or direct plug-in filters. These other filters will be covered by another sectional specification.
This edition includes the following significant technical changes with respect to the previous edition:
a) separated clauses for safety and performance tests;
b) added note for use of multiple X capacitors bridging basic insulation in 3 phase filters;
c) characteristics and conditions to substitute X and Y capacitors are now described in a separate Subclause 4.1;
d) creepage and clearance tables updated and in line with the latest editions of IEC 60938-2 and IEC 60664-1;
e) allowing voltage measurement for inductance measurements (7.3);
f) added requirements for marking depending on remaining energy after disconnection;
g) added content of CTL DSH 2044:2016 for temperature test of IEC filters;
h) added note about temperature rise required specimens for safety testing;
i) changed index of capacitors in Annex A to avoid confusion between index name and capacitor class;
j) moved tests from group 1A to 2. Now, samples in group 1A need to be submitted without potting;
k) revision of all parts of the document has taken place based on the ISO/IEC Directives, Part 2:2021, and harmonization with other similar kinds of documents. Annex X contains all cross-references of changes in clause/subclause numbers.