1794-OF4IXT

過電流保護：電動機過載時會產生過電流，過電流保護可以通過監測電流值來檢測電機是否過載，當電流超過預設值時，保護器將斷開電路，以保護電機免受過載的損害。

　　過熱保護：電機工作時，因摩擦和電阻等原因會產生熱量，當熱量過大時會導致電機過熱，過熱保護可以通過監測電機的溫度來檢測電機是否過熱，當溫度超過預設值時，保護器將斷開電路。

　　缺相保護：電機三相電源中任意一相中斷，將導致電機無法正常工作，缺相保護可以檢測到這種情況，并及時斷開電路，以保護電機免受電源相缺失造成的損害。

　　地錯保護：當電機外殼出現漏電時，會導致電路出現短路，地錯保護可以檢測到這種情況，并及時斷開電路，以保護電機免受電擊等事故的發生。

　　過載保護：電機長時間超負載運行，將會導致電機溫升過高，過載保護可以通過監測電機的負載情況來檢測電機是否過載，當負載超過預設值時，保護器將斷開電路。

　　欠壓保護：電機工作時，如果供電電壓過低，將會導致電機無法正常工作，欠壓保護可以檢測到這種情況，并及時斷開電路。

　　綜上所述，電動機控制系統常用的保護環節包括過電流保護、過熱保護、缺相保護、地錯保護、過載保護和欠壓保護等，這些保護措施可以確保電機在工作時不會受到損壞，同時也可以保障工作人員的。

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