电动机起动引起的断路器故障分析  

Analysis on Circuit Breaker Faults Caused by Motor Starting

作　　者：杨青[1] 余晓松[1] 刘哲[2] 付光晶 

机构地区：[1]海军驻上海711所军事代表室,上海201108 [2]上海电器科学研究所(集团)有限公司,上海200063

出　　处：《电器与能效管理技术》2015年第12期12-15,共4页Electrical & Energy Management Technology

摘　　要：为了揭示某船舵机电动机起动过程中断路器跳闸和烧损的故障机理,分析和比较了断路器瞬时保护电磁脱扣器在单相电流和两相电流下的动作关系,给出了断路器烧损的原因为起动电流大于触头斥开电流。针对具有高倍数瞬时保护电流的断路器,提出了断路器单相电流下电磁脱扣器动作电流须小于触头斥开电流。For analyzing the mechanism of tripping and burning fault of a circuit breaker occurred during the starting process of motors in ship steering engine, the different actions of the electromagnetic trip device for instantaneous protection in circuit breaker under single-phase current or two-phase current were analyzed and compared. The reason of burning fault of circuit breaker was clarified as that the starting current is greater than the separation current of repulsion contactor. For the circuit breaker with high transient protection current,it is suggested that the action current of the electromagnetic trip device in circuit breakers under single-phase current condition must be less than the separation current of repulsion contactor.

关 键 词：断路器 瞬时保护 起动电流 触头斥开电流 

分 类 号：TM561[电气工程—电器]