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y812970659
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樓主  發(fā)表于: 2014-07-02 18:46
圖片:
    
   11KW 21A   1P南海九州風(fēng)機  星三角降壓?jiǎn)?dòng)采用(220V交流接觸器2510 3個(gè),  八腳時(shí)間繼電器220V 10S 一個(gè),這些普通的元器件可以嗎?一般星啟動(dòng)多少S再轉換三角啟動(dòng)?)

     控制線(xiàn)路 采用如圖b所示:
lnsyzbw
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1樓  發(fā)表于: 2014-07-03 09:34
星——三角降壓?jiǎn)?dòng)的電路圖,一般與電氣基礎知識相關(guān)的書(shū)籍或是網(wǎng)上多得是,控制方式五花八門(mén),這里不多評述。主要保證KM2與KM3有必要的聯(lián)鎖,不同時(shí)吸和即可。在電動(dòng)機全壓運行后,時(shí)間繼電器最好在不帶電狀態(tài)。根據負載情況一般時(shí)間繼電器設定在5至10秒;如果不太考慮成本的話(huà),建議FU1和FU2選用小型斷路器,如果KM1和KM3選用國產(chǎn)接觸器,建議再往高選一檔。

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