低压开关设备和控制设备组件第1部分:总则

[中文适用范围]： 本文档规定了低压开关设备和控制设备组装件的通用定义、服务条件、结构要求、技术特性和验证要求。本文档仅在与相关组装件标准要求一起应用时适用，适用于额定电压不超过1000 V交流或1500 V直流、设计频率不超过1000 Hz、用于室内或室外、固定或移动、带或不带外壳的组装件。本文档适用于涉及电能产生、传输、分配和转换以及与电能消耗设备控制相关的组装件。本文档不适用于单个设备和自包含组件，如电动机启动器、熔断器开关、电力电子转换器系统和设备(PECS)、开关模式电源(SMPS)、不间断电源(UPS)、基本驱动模块(BDM)、完整驱动模块(CDM)、可变调速驱动系统(PDS)以及其他符合其相关产品标准的电子设备。本文档描述了将设备和自包含组件集成到组装件或形成组装件的空外壳中。 [外文原描述]： IEC 61439-1:2020 lays down the general definitions and service conditions, construction requirements, technical characteristics and verification requirements for low-voltage switchgear and controlgear assemblies. NOTE Throughout this document, the term assembly(s) (see 3.1.1) is used for a low-voltage switchgear and controlgear assembly(s). For the purpose of determining assembly conformity, the requirements of the relevant part of the IEC 61439 series, Part 2 onwards, apply together with the cited requirements of this document. For assemblies not covered by Part 3 onward, Part 2 applies. This third edition cancels and replaces the second edition published in 2011. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) clarification that power electric converter systems, switch mode power supplies, uninterruptable power supplies and adjustable speed power drive systems are tested to their particular products standard, but when they are incorporated in assemblies the incorporation is in accordance with the IEC 61439 series of standards; b) introduction of a group rated current for circuits within a loaded assembly and the refocusing of temperature-rise verification on this new characteristic; c) addition of requirements in respect of DC; d) introduction of the concept of class I and class II assemblies regarding protection against electric shock. The contents of the corrigendum 1 of December 2021 and corrigendum 2 of September 2023 have been included in this copy.