三相异步电动机Y-Δ降压启动电路另类故障分析 

张子善，朱泽胜，刘洪志 
(中国人民解放军96625部队，河北 宣化 075100) 
 

摘 要：介绍了三相异步电动机Y-Δ降压启动电路中，当接触器和时间继电器额定电压不完全一致时，可能出现接触器振动吸合和时间继电器提前开始计时的另类故障现象，分析了故障产生原因，通过对控制电路进行修正，切断了导致故障产生的“提前通路”，保证了Y-Δ转换功能正常。此方法对其他Y-Δ降压启动电路类似故障的解决均有借鉴意义。
关键词：三相异步电动机；Y-Δ降压启动；故障；提前通路
中图分类号：TM343+.2 文献标识码：A 文章编号：1007-3175(2014)03-0031-03

Offbeat Fault Analysis of Y-Δ Reduced Voltage Starting Circuit in Three-Phase Asynchronous Motor 

ZHANG Zi-shan, ZHU Ze-sheng, LIU Hong-zhi 
（Troops of 96625 PLA, Xuanhua 075100, China） 
 

Abstract: Introduction was made to that in Y-Δ reduced voltage starting circuits of three-phase asynchronous motors, the offbeat fault of contactor vibrating making took place and time relays counted ahead of time when the rated voltage of contactors were not in uniform with that of time relays. The faults causes were analyzed, the control circuit was modified and the path ahead of time
was cut off to ensure Y-Δ transferring in normal function. This method is a reference for similar faults of other Y-Δ reduced voltage starting circuits.
        Key words: three-phase asynchronous motor; Y-Δ reduced voltage starting circuit; fault; early circuit path

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