城轨用带串联间隙球头避雷器寿命分析  

Analysis of Service Life of Ball End Lightning Arresters with Gaps Connected in Series for Urban Rail Transit

出　　处：《电气化铁道》2016年第2期37-39,共3页Electric Railway

摘　　要：从金属氧化物电阻片的电老化失效、避雷器本体的密封失效及避雷器的耐受电流冲击能力3个方面分析了影响避雷器寿命的主要因素及城市轨道接触网用新型带串联间隙避雷器在这3方面所具备的性能优势,从而得出了城市轨道接触网用带串联间隙球头避雷器的使用寿命可以达到20～30年.The service life of the ball end lightning arrester with gaps connected in series for overhead contact system in urban rail transit is concluded that it may reach 20-30 years after assessment of the main factors affecting its service life and its advantages for application in overhead contact system in urban rail transit on the basis of analyzing the three aspects of electrical aging failure of the metal oxide resistance chip, sealing failure of lightning arrester body and the withstanding capacity to current impulses.

关 键 词：架空接触网 串联间隙金属氧化物避雷器 寿命分析 

分 类 号：U231.8[交通运输工程—道路与铁道工程]