IEC 60238:2016+A1:2017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。该合并版本由第九版（2016年）及其修正案1（2017年）组成。因此，除本出版物外，无需下令修订。

IEC 60238:2016+A1:2017 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. This consolidated version consists of the ninth edition (2016) and its amendment 1 (2017). Therefore, no need to order amendment in addition to this publication.