铁路通信信号工程技术2025，Vol.22Issue(6)：126-131,6.DOI:10.3969/j.issn.1673-4440.2025.06.019
电源屏切换装置失效原因研究
Research on Failure Causes of Switching Device of Power Supply Panels
于萌1
作者信息
- 1. 北京市地铁运营有限公司通信信号分公司,北京 100082
- 折叠
摘要
Abstract
Based on the actual failure case of the switching board of power supply panels,multiple methods and tools are used to analyze the failure causes from multiple dimensions.Through fault localization and troubleshooting,the fault is located in the time relay.The specific reason is that the electrolytic capacitor C1 dried up,causing damage to the chip U1 and making it impossible to control the relay contacts to close.The internal and external factors that caused the drying up of electrolytic capacitor C1 are analyzed,achieving the thorough solution of the technical problem.This process effectively explores the core causes of switching board failures of power supply panels,which is of great significance for the stable operation of subway power supply systems.关键词
电源屏/时间继电器/失效分析/电容寿命Key words
power supply panel/time relay/failure analysis/capacitor life分类
交通工程引用本文复制引用
于萌..电源屏切换装置失效原因研究[J].铁路通信信号工程技术,2025,22(6):126-131,6.
