IEC 60947-5-8:2020 低压开关柜和控制装置 - 第5-8部分:控制电路设备和开关元件 - 三位置使能开关

标准编号：IEC 60947-5-8:2020

中文名称：低压开关柜和控制装置 - 第5-8部分:控制电路设备和开关元件 - 三位置使能开关

英文名称：Low-voltage switchgear and controlgear - Part 5-8: Control circuit devices and switching elements - Three-position enabling switches

发布日期：2020-08-12

标准范围

IEC 60947-5-8:20 20作为IEC 60947-5-8:20 20 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 60947-5-8:20 20规定了三位使能开关的要求。这些开关被用作使能装置的部件以提供信号，-当被激活时，允许通过单独的启动控制来启动机器操作，以及-当去激活时，--启动停止功能，以及——防止启动机器操作。这第二版取消并取代了2006年出版的第一版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更:-由于三的有用应用范围越来越大-审查位置使能开关、范围说明、操作特性和测试；-在附录A中添加了包含使能开关的设备的示例图；-增加了新的附录B，用于确定功能安全应用中使用的开关的可靠性数据的程序。

IEC 60947-5-8:2020 is available as IEC 60947-5-8:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60947-5-8:2020 specifies requirements for three-position enabling switches. These switches are used as components of enabling devices to provide signals that,
- when activated, allow machine operation to be initiated by a separate start control, and
- when de-activated,
-- initiate a stop function, and
-- prevent initiation of machine operation.
This second edition cancels and replaces the first edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- due to the increasing range of useful applications of three-position enabling switches, note of scope, operational characteristics and tests are reviewed;
- figures for example of devices incorporating enabling switch are added in Annex A;
- new Annex B for procedure to determine reliability data for the switch used in functional safety applications is added.

标准预览图