新的！IEC 60077-1:20 17作为IEC 60077-1:20 17 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC？60077-1:20 17规定了安装在电力电路、辅助电路、控制和指示电路等中的所有电气设备的一般使用条件和要求。，在铁路机车车辆上。本文件的目的是尽可能协调适用于机车车辆电气设备的所有一般性质的规则和要求。与上一版相比，新版本包括以下主要技术变化:删除了有关绝缘协调、环境条件以及电流返回和保护连接的描述，并用IEC？62497？1、IEC？62498-1和IEC？61991;介绍了设备类型的分类；回顾了温度限值和温升试验。

NEW!IEC 60077-1:2017 is available as IEC 60077-1:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC？60077-1:2017 specifies the general service conditions and requirements for all electric equipment installed in power circuits, auxiliary circuits, control and indicating circuits etc., on railway rolling stock. The purpose of this document is to harmonize as far as practicable all rules and requirements of a general nature applicable to electric equipment for rolling stock. This new edition includes the following main technical changes with regard to the previous edition: descriptions regarding insulation coordination, environmental conditions and those of current return and protective bonding are deleted and replaced by references to IEC？62497？1, IEC？62498-1 and IEC？61991; classification of equipment type is introduced; temperature limits and temperature rise tests are reviewed.