标准摘要
[中文适用范围]: IEC 60947 的该部分适用于考虑使用区域的分离式接触,例如控制电路的切换元件。该标准考虑了两个典型的额定电压区域:a) 10 V(包括)及以上(通常为 24 V),其中接触用于切换可能产生电侵蚀的负载,例如可编程控制器输入;b) 低于 10 V(通常为 5 V),其中电侵蚀可忽略不计,例如电子电路。该标准不适用于用于:功能安全区域的接触。如果使用功能安全区域的接触,则适用 IEC 60947-5-1:2016 的附录 N;极低能量测量区域的接触,例如传感器或热电偶系统。本标准的目标是提出一种评估低能量接触性能的方法,提供:有用的定义;监测和记录每次操作中接触行为的一般测试方法原则;定义一般测试设备的功能基础;首选测试值;用于特定应用接触(例如可编程控制器输入切换)的特殊测试条件;测试报告中应提供的信息;测试结果的解释和呈现。 [外文原描述]: IEC 60947-5-4:2002+A1:2019 applies to separable contacts used in the utilization area considered, such as switching elements for control circuits. This standard takes into consideration two rated voltage areas: a) above (and including) 10 V (typically 24 V) where contacts are used for switching loads with possible electrical erosion, such as programmable controller inputs; b) below 10 V (typically 5 V) with negligible electrical erosion, such as electronic circuits. This second edition cancels and replaces the first edition which was issued as a technical report in 1996. It now has the status of an International Standard. This consolidated version consists of the second edition (2002) and its amendment 1 (2019). Therefore, no need to order amendment in addition to this publication.
英文名称Low-voltage switchgear and controlgear - Part 5-4: Control circuit devices and switching elements - Method of assessing the performance of low-energy contacts - Special tests