IEC 60238:2016+A1:2017+A1:2020适用于带有爱迪生螺纹E14、E27和E40的灯座，仅设计用于连接灯具和半灯具的电源。它也适用于仅用于交流电路的开关灯座，其中工作电压不超过250 V r.m.s。本第九版取消并取代了2004年出版的第八版、修正案1:20 08和修正案2:20 11。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)增加了某些E5和E10灯座的拉力测试。 b)附录D列出了要求重新测试产品的修订要求/条款。2018年1月更正的内容已纳入本副本。该合并版本由第九版（2016年）、修正案1（2017年）和修正案2（2020年）组成。因此，除本出版物外，无需下令修订。

IEC 60238:2016+A1:2017+A1:2020 applies to lampholders with Edison thread E14, E27 and E40, designed for connection to the supply of lamps and semi-luminaires only. It also applies to switched-lampholders for use in AC circuits only, where the working voltage does not exceed 250 V r.m.s. This ninth edition cancels and replaces the eighth edition published in 2004, Amendment 1: 2008 and Amendment 2:2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) Addition of a pull test for certain E5 and E10 lampholders.
b) Annex D listing amended requirements/clauses which require products to be retested. The contents of the corrigendum of January 2018 have been included in this copy. This consolidated version consists of the ninth edition (2016), its amendment 1 (2017) and its amendment 2 (2020). Therefore, no need to order amendment in addition to this publication.