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交流同步電動機

電動機兩地控制接線圖

發布日期:2022-04-18 點擊率:91

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電動機兩地控制電氣原理圖
     為了操作方便,一臺設備有幾個操縱盤或按鈕站,各處都可以進行操作控制。要實現多地點控制則在控制線路中將啟動按鈕并聯使用,而將停止按鈕串聯使用。
     上圖是以兩地點控制為例分析電動機多地點控制線路。兩地啟動按鈕SB12、SB22并聯,兩地停止按鈕SB11、SB21串聯。
     操作過程如下:
一、電動機起動;
1、合上空氣開關QF接通三相電源
2、按下啟動按鈕SB12或SB22(以操作方便為原則)交流接觸器KM線圈通電吸合,主觸頭閉合,電動機運行。同時KM輔助常開觸點自鎖。
二、電動機停止;
1、按下停止按鈕SB11或SB21(以方便操作為原則)接觸器KM線圈失電,KM的觸點全部釋放,電動機停止。
三、電動機的過載保護由熱繼電器FR完成。  
電動機兩地控制接線
電動機兩地控制接線示意圖

 

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