IEC 61148:2011适用于阀门装置组和组件以及集成转换设备的主回路的端子标记。端子标记是指包括半导体阀装置的堆叠、组件和设备。本标准的目的是规定一种逻辑字母数字标记系统，用于识别电堆、阀装置组件或集成转换设备中的主电源电路的外部主端子，该系统适用于电路图、目录、描述以及信息交换和存储中的参考目的。在堆叠和组件的情况下，字母数字端子标记系统用于那些最重要和最常用的转换器连接。本标准不考虑使用图形符号或识别颜色的终端标记系统。 与上一版相比，第二版包括以下重大技术变更: -根据现行指令对整个文件进行了重写； -根据IEC 60971的撤销删除了识别码； -增加了端子标记的示例，特别是对于自换向转换器。

IEC 61148:2011 is applicable to the terminal markings for the main circuits of valve device stacks and assemblies, and of integrated conversion equipment. The terminal markings refer to stacks, assemblies and equipment comprising semiconductor valve devices. The object of this standard is to specify a logical alphanumeric marking system for the identification of the external main terminals of the main power circuits in a stack, valve device assembly or integrated conversion equipment, which is applicable for the purpose of reference in circuit diagrams, catalogues, descriptions, and information exchange and storage. In the case of stacks and assemblies, alphanumeric terminal marking systems are indicated for those converter connections which are the most important and most commonly used ones. Terminal marking systems making use of graphic symbols or identifying colours are not considered in this standard. This second edition includes the following significant technical changes with respect to the previous edition:
- the whole document has been rewritten according to the current Directives;
- the identification codes were deleted according to the withdrawal of IEC 60971;
- examples of terminal marking were added, especially for self-commutated converters.