电工电气
電工電氣
전공전기
ELECTROTECHNICS ELECTRIC
2014年
3期
31-33
,共3页
张子善%朱泽胜%刘洪志
張子善%硃澤勝%劉洪誌
장자선%주택성%류홍지
三相异步电动机%Y-Δ降压启动%故障%提前通路
三相異步電動機%Y-Δ降壓啟動%故障%提前通路
삼상이보전동궤%Y-Δ강압계동%고장%제전통로
three-phase asynchronous motor%Y-Δreduced voltage starting circuit%fault%early circuit path
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。
介紹瞭三相異步電動機Y-Δ降壓啟動電路中，噹接觸器和時間繼電器額定電壓不完全一緻時，可能齣現接觸器振動吸閤和時間繼電器提前開始計時的另類故障現象，分析瞭故障產生原因，通過對控製電路進行脩正，切斷瞭導緻故障產生的“提前通路”，保證瞭Y-Δ轉換功能正常。此方法對其他Y-Δ降壓啟動電路類似故障的解決均有藉鑒意義。
개소료삼상이보전동궤Y-Δ강압계동전로중，당접촉기화시간계전기액정전압불완전일치시，가능출현접촉기진동흡합화시간계전기제전개시계시적령류고장현상，분석료고장산생원인，통과대공제전로진행수정，절단료도치고장산생적“제전통로”，보증료Y-Δ전환공능정상。차방법대기타Y-Δ강압계동전로유사고장적해결균유차감의의。
Introduction was made to that in Y-Δreduced 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-Δtransferring in normal function. This method is a reference for similar faults of other Y-Δreduced voltage starting circuits.
