标准摘要
[中文适用范围]： IEC 60917 的这一部分为基于 IEC 60917-2-2 的模块化子架和相关插件单元提供了附加尺寸。典型的子架由框架设计组成，其安装尺寸符合 IEC 60917-2-1 标准，可安装到机架或机柜中。子架的孔径尺寸是为了满足前插式单元的安装尺寸而规定的。 IEC 60917 的这一部分包括 – 子架和带有注入器/提取器手柄的子架相关插件单元的附加尺寸； – 基本电磁屏蔽规定的尺寸； – 子架和插件单元的钥匙/编码系统的尺寸； – 前面板和插件单元的定位销尺寸； – 静电放电规定的尺寸； – 后置插件单元的尺寸。附件 A 中给出了与连接器相关的尺寸。为了确保插入式单元与子架的兼容性，定义了检查尺寸和连接器相关尺寸。注：IEC 60917 本部分中使用的图纸并不用于指示产品设计，仅用于指示所使用的具体尺寸。 [外文原描述]： IEC 60917-2-3:2006 Provides additional dimensions for a modular range of subracks and associated plug-in units based on IEC 60917-2-2. A typical subrack consists of a frame design with mounting dimensions for installation into racks or cabinets in accordance with IEC 60917-2-1. The aperture dimensions of a subrack are specified in order to meet the mounting dimensions of front plug-in units. This part of IEC 60917 comprises additional dimensions for subracks and subrack associated plug-in units with injector/extractor handle, dimensions for basic electromagnetic shielding provisions, dimensions of the key/coding system for subrack and plug-in units, dimensions of the alignment pin for front panel and plug-in unit, dimensions of electrostatic discharge provisions and dimensions of rear-mounted plug-in units. This bilingual version (2013-06) corresponds to the monolingual English version, published in 2006-05. Key words: subrack, plug in units, chassis
英文名称Modular order for the development of mechanical structures for electronic equipment practices - Part 2-3: Sectional specification - Interface co-ordination dimensions for the 25 mm equipment practice - Extended detail specification - Dimensions for subracks, chassis, backplanes, front panels and plug-in units