IEC 62505-2:20 16适用于单极、两极和三极交流（AC）隔离开关、接地开关和设计用于牵引系统中室内或室外固定安装的开关，并在IEC 60850规定的交流线电压和频率下运行。与上一版相比，主要变化如下: -反映所引用标准的最新版本，并删除IEC 62271系列中已包含的文本； -根据IEC 62497-1:20 10的变更返工表1。 本出版物应与IEC 62271-1:20 07、IEC 62271-102:2001和IEC 62271-103:2011一起阅读。

IEC 62505-2:2016 is applicable to single-pole, two-pole and three-pole alternating current (AC) disconnectors, earthing switches and switches which are designed for indoor or outdoor fixed installations in tractions systems, and operated with an AC line voltage and frequency as specified in IEC 60850. The main changes with respect to the previous edition are as follows:
- reflect the latest versions of standards referenced and remove text already included in the IEC 62271 series;
- rework Table 1 according to the changes of IEC 62497-1:2010.

This publication is to be read in conjunction with IEC 62271-1:2007, IEC 62271-102:2001, and IEC 62271-103:2011.