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三相電機工作電容的計算公式?

發表時間:2021-04-01 16:26【 閱讀量:-查看手機網址
掃一掃!三相電機工作電容的計算公式?掃一掃!

三相電機改單相電機工作電容的計算公式:C=1950I/Ucos∮(UF)式中:I為電動機額定電流(你的電機為回4.4A),答U為單相電源電壓,cos∮為電機功率因數,單相取0.65,1950為常數;當計算出工作電容后,起動電容為工作電容的1—4倍,經計算2.2KW電機的工作電容是:60UF;你才用12UF當然轉速很低,啟動電容為120UF(如不是帶負載啟動,也可不用,但啟動慢)三相電機由于改為單相運行其功率會減少30%,即(380-220)I,希望能幫到你。

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