旋转电机.第5部分:旋转电机整体设计提供的防护等级（IP代码）.分类

[中文适用范围]： 本标准部分适用于旋转电机的 enclosure 防护等级的分类。它定义了防护 enclosure 的要求，这些 enclosure 在其他方面适合其预期用途，并且从材料和工艺的角度来看，确保本文件所涉及的性质在正常使用条件下得到保持。本文件不规定对机械损坏的防护等级，或诸如湿度（例如由冷凝产生）、腐蚀性粉尘和蒸汽、真菌或害虫等条件。本文件也适用于防爆电机，但它不规定用于潜在爆炸性（粉尘、气体）环境中的防护类型。这些在 IEC 60079 系列标准中定义。在某些应用（如农业或家用电器）中，可能规定了针对意外或故意接触的更广泛的预防措施。本文件给出了适用于旋转电机的 enclosure 提供的标准防护等级的定义，涉及：a) 人员接触或接近 enclosure 内的带电部件和运动部件（平滑旋转轴等除外）的防护，以及防止人员接触 enclosure 内的运动部件（平滑旋转轴等除外）；b) 防止固体异物进入的防护；c) 防止水进入对机器产生有害影响的防护。它给出了这些防护等级的标志符号以及用于检查机器是否符合本文件要求的测试方法。 [外文原描述]： IEC 60034-5:2020 applies to the classification of degrees of protection provided by enclosures for rotating electrical machines. It defines the requirements for protective enclosures that are in all other respects suitable for their intended use and which, from the point of view of materials and workmanship, ensure that the properties dealt with in this document are maintained under normal conditions of use. This document does not specify degrees of protection against mechanical damage of the machine, or conditions such as moisture (produced for example by condensation), corrosive dust and vapour, fungus or vermin. This document is also applicable to explosion proof machines, but it does not specify the types of protection for use in a potentially explosive (dust, gas) environment. Those are defined in the IEC 60079 series of standards. This document gives definitions for standard degrees of protection provided by enclosures applicable to rotating electrical machines as regards the: a. protection of persons against contacts with or approach to live parts and against contact with moving parts (other than smooth rotating shafts and the like) inside the enclosure and protection of the machine against ingress of solid foreign objects b. protection of machines against the harmful effects due to ingress of water; c. protection of machines against the harmful effects due to ingress of dust. This fifth edition cancels and replaces the fourth edition, published in 2000, and its Amendment 1:2006.The main technical changes with respect to the previous edition are: - the inclusion of an additional second numeral 9 including its test method, - an additional note for clarification in Table 3, - a clarification on the term open drain hole, - a clarification on the ingress of dust in Table 4, - pressure values given now in Pa only, - a clarification in the scope on the applicability of this standard for (Ex) motors, - a new Clause 3 with definitions, The contents of the corrigendum of January 2024 have been included in this copy.