新的！IEC 61558-1:20 17作为IEC 61558-1:20 17 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 61558-1:20 17涉及变压器、电抗器、电源单元及其组合的安全方面，例如电气、热和机械安全。本文件涵盖以下独立或相关的固定式或便携式类型的干式变压器，电源单元，包括开关模式电源单元，？安全领域中的反应器及其组合。绕组可以是封装的或非封装的。它们不是分销网络的一部分。本第三版取消并取代了2005年出版的第二版和修正案1:2009.本版是技术性修订。与上一版相比，此版本包括以下重大技术变更: a.全绝缘绕组线（FIW），FIW结构的新表和老化测试， b.包括用于间隙和介电强度测试的过电压类别1、2、3和4（新表）， c.为不同的过电压类别开发新的符号， d.最高海拔的符号，如果高于2 000 m， e.插入式电源单元的符号，如果插针损坏（翻滚桶测试）， f.最低温度符号（即使在运输过程中）， g.根据IEC 60076-11的替代温度测量、模拟负载和背靠背方法， h.短路和过载保护，模拟负载和背靠背方法符合IEC 60076-11, i.根据CENELEC指南29调整表2中的温度， j.为FIW结构建立750V以上的局部放电测试， k.环形铁芯结构的要求，基本隔离和辅助隔离的划分， l.外壳保护指数的修改（IP代码）， m.变压器用矩形截面连接器的尺寸， 名词（noun的缩写）重复测试，表14所需介电强度测试电压的80%，a。 哦。车辆和铁路应用的振动测试， p.两个Y1电容器，用于工作电压在250 V以上且不超过500 V，过电压类别为3。 根据IEC指南104，它具有团体安全出版物的地位。

NEW!IEC 61558-1:2017 is available as IEC 61558-1:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 61558-1:2017 deals with safety aspects of transformers, reactors, power supply units and combinations thereof such as electrical, thermal and mechanical safety. This document covers the following independent or associated stationary or portable types of dry-type transformers, power supply units, including switch mode power supply units,？ reactors and combinations thereof in the field of safety. The windings can be encapsulated or non-encapsulated. They are not forming a part of the distribution network. This third edition cancels and replaces the second edition published in 2005 and Amendment 1:2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a. fully insulated winding wires (FIW), new tables and aging tests for FIW constructions,
b. overvoltage categories 1, 2, 3 and 4 for clearances and dielectric strength tests (new tables) are included,
c. development of new symbols for the different overvoltage categories,
d. symbol for maximum altitudes, if higher than 2 000 m,
e. symbol for plug in power supply units, if the pins are damaged (tumbling barrel test),
f. symbol for minimum temperature (even during the transportation),
g. alternative temperature measurement, simulated load and back to back method according to IEC 60076-11,
h. short circuit and overload protection, simulated load and back to back method according to IEC 60076-11,
i. adjustment of temperatures in Table 2 according to CENELEC Guide 29,
j. establishing partial discharge test above 750 V for FIW constructions,
k. requirements for toroidal core constructions, division for basic and for supplementary isolation,
l. modification of protection indexes for enclosures (IP-code),
m. dimensioning of rectangular cross section connectors for transformers,
n. repetition test, 80% of required dielectric strength test voltage of Table 14,a.
o. vibration test for vehicles and railway applications,
p. two Y1 Capacitors for working voltages above 250 V and not exceeding 500 V with overvoltage category 3.
It has the status of a group safety publication in accordance with IEC Guide 104.