IEC 60884-3-1:20 21适用于仅用于交流的固定或便携式插座，带或不带接地触点，额定电压大于50 V但不超过440 V，额定电流不超过32 A，用于室内或室外的家用和类似用途，包括USB电源。 本文件定义了包含USB电源的插座的安全和EMC要求。 本文件未涵盖USB技术的规格、性能和尺寸要求；它们在IEC 62680的相关部分中定义。

IEC 60884-3-1:2021 applies to fixed or portable socket-outlets for AC only, with or without earthing contact, with a rated voltage greater than 50 V but not exceeding 440 V and a rated current not exceeding 32 A, intended for household and similar purposes, either indoors or outdoors, incorporating USB power supply.
This document defines the safety and EMC requirements for socket-outlets incorporating USB power supply.
Specifications, performance and dimensional requirements of the USB technologies are not covered by this document; they are defined in the relevant part(s) of IEC 62680.