用于电气和电子设备实践的机械结构开发的模块化顺序 第1部分：通用标准

[中文适用范围]： 该部分IEC 60917规定了设备实践与 modular order（模块顺序）之间的关系，适用于安装在各种安装中的电子和电气设备的主要结构尺寸，这些安装中必须考虑尺寸接口以实现机械兼容性。本文件还建立了电气和电子设备的机械结构的部件和组件的术语，以阐明设备实践与模块顺序之间的特定关系。 [外文原描述]： IEC 60917-1:2019 specifies the relationships between equipment practices and the modular order which are applicable to the main structural dimensions of electronic and electrical equipment mounted in various installations where dimensional interfaces have to be considered for mechanical compatibility. This document also established terms for parts and assemblies of mechanical structures for electrical and electronic equipment, to clarify the specific relations between equipment practices and modular order. This second edition cancels and replaces the first edition published in 1998 and its Amendment 1:2000. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) added information on newly developed detail specification standards of mechanical structures for the electrical and electronic equipment practices; b) added information on newly developed performance test standards for the verifications of environmental performances and safety aspects and issues of the thermal performance and thermal management for the electrical and electronic equipment practices; c) introduced the relations between the mechanical structure for electrical and electronic system, the verification of environmental performance and safety aspects and issues of the thermal performance and thermal management for the electrical and electronic equipment practices. Key words: IT Cabinets, Mechanical Structures