lEC 60320-1:20 21规定了两极和两极接地电器耦合器以及家用和类似电气设备连接到主电源的一般要求。 本文件也适用于集成或并入电器的电器入口/电器出口。 本第四版取消并取代了2015年发布的第三版和修正案1:20 18。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: 在整个文件中引入必要的公差； 第2版的加热试验在18.2中重新引入； 第21条中增加了插头连接器的温升； 23.3中为更好的可读性而进行的更改； 23中更新了横向拉力测试。6用于具有独立前部的连接器/插头连接器； 修订24.1用于球压试验； 更新了辉光线测试的条款27； 修订附录C测试序列； 用于环境温度高于+35°C的设备耦合器的附加测试和要求的附加附录E。

lEC 60320-1:2021 sets the general requirements for appliance couplers for two poles and two poles with earth contact and for the connection of electrical devices for household and similar onto the mains supply. This document is also valid for appliance inlets/appliance outlets integrated or incorporated in appliances.
This fourth edition cancels and replaces the third edition published in 2015 and Amendment 1:2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:

1. introduction of necessary tolerances throughout this document;
2. the heating test from edition 2 is reintroduced in 18.2;
3. temperature rise added for plug connectors in Clause 21;
4. change for better readability in 23.3;
5. updated lateral pull test in 23.6 for connectors/plug connectors with separate front parts;
6. revision of 24.1 for ball pressure test;
7. Clause 27 for glow wire test is updated;
8. revision of Annex C for test sequences;
9. additional Annex E for additional tests and requirements for appliance couplers intended to be used in ambient temperatures above +35 °C.