关键词: 贮存失效, 银基触点, 继电器, 失效分析, 贮存条件

Abstract: The relay contacts, as an important part of relay, are vulnerable to erosion. Once any contact becomes abnormal, this problem may cause such abnormal situations as contact adhesion, arcing and poor contact, and affect the mechanical and electrical properties of the whole relay, so that the relay cannot be energized and de-energized normally, and the running efficiency and safety of urban rail transit are affected. Building on actual relay damage cases in the storage process, and taking JYJXC-160/260 polarized enhanced contact relay as an example, this paper aims to analyze the relay damage degree, damage cause, storage environment and storage method, and summarize the impacts of two factors in storage conditions, i.e., environmental factors and storage state, on the performance of relays, which provides maintenance reference for relevant practitioners.

Key words: storage failure, silver-based contact, relay, failure analysis, storage conditions