IEC 60034-5:20 20 RLV包含官方IEC国际标准及其红线版本。Redline版本不是官方文档，它只有英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 IEC 60034-5:20 20适用于旋转电机外壳提供的保护程度的分类。它定义了保护外壳的要求，这些外壳在所有其他方面都适合其预期用途，并且从材料和工艺的角度来看，确保在正常使用条件下保持本文件中涉及的特性。本文件未规定机器机械损坏或湿气（例如由冷凝产生）、腐蚀性灰尘和蒸汽、真菌或害虫等条件的防护程度。本文件也适用于防爆机器，但没有规定在潜在爆炸性（粉尘、气体）环境中使用的防护类型。这些在IEC 60079系列标准中定义。本文件给出了适用于旋转电机的外壳在以下方面提供的标准防护等级的定义: a.保护人员不接触或接近带电部件，不接触外壳内的运动部件（光滑的旋转轴等除外），并保护机器不受固体异物进入 b.保护机器免受进水的有害影响； c.保护机器免受灰尘进入的有害影响。 本第五版取消并取代2000年出版的第四版及其修正案1:2006.与上一版相比，主要技术变化如下: -包括附加的第二数字9，其包括其测试方法， -表3中用于澄清的附加注释， -对术语开放式排水孔的澄清， -对表4中灰尘进入的澄清， -现在仅以Pa给出的压力值， -澄清本标准适用于(Ex)电机的范围， -新订的第3条及定义

IEC 60034-5:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is not an official document, it is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.

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