电磁兼容性（EMC）.第2-5部分:环境.电磁环境的描述和分类

[中文适用范围]： Knowledge of the electromagnetic environment that exists at locations where electrical and electronic equipment and systems are intended to be operated is an essential precondition in the process of achieving electromagnetic compatibility. This knowledge can be obtained by various approaches, including a site survey of an intended location, the technical assessment of the equipment and system, as well as the general literature. This part of IEC 61000 introduces the concept of disturbance degrees and defines these for each electromagnetic phenomena, classifies into various location classes and describes them by means of attributes, provides background information on the different electromagnetic phenomena that may exist within the environment and compiles tables of compatibility levels for electromagnetic phenomena that are considered to be relevant for those location classes. This part of IEC 61000 is intended for guidance for those who are in charge of considering and developing immunity requirements. It also gives basic guidance for the selection of immunity levels. The data are applicable to any item of electrical or electronic equipment, subsystem or system that operates in one of the locations as considered in this document. [外文原描述]： IEC TR 61000-2-5:2017 RLV contains both the official IEC International Standard and its Redline version. The Redline version 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/TR 61000-2-5:2017(E) is a Technical Report intended for guidance for those who are in charge of considering and developing immunity requirements. It also gives basic guidance for the selection of immunity levels. The data are applicable to any item of electrical or electronic equipment, sub-system or system that operates in one of the locations as considered in this document. This Technical Report provides the following: – introduces the concept of disturbance degrees and defines these for each electromagnetic phenomena; – classifies into various location classes and describes them by means of attributes; – provides background information on the different electromagnetic phenomena that may exist within the environment and; – compiles tables of compatibility levels for electromagnetic phenomena that are considered to be relevant for those location classes. This third edition cancels and replaces the second published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the description of the radiated electromagnetic environment has been updated taking into account recent communication technologies; b) some conducted phenomena and respective interference sources have been described in more detail.