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空調電磁式繼電器一般怎么檢測?

編輯:武漢美的空調維修  發布日期:2014-05-31 10:46:02  瀏覽:

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從電路中拆下繼電器后,也可用萬用表進行檢測。先用反R×100Ω或只R×100Ω配電阻擋測量線圈的直流電阻,一般右幾十歐至幾百歐的直流電阻值。然后檢測電觸點,如為常開觸點,引出端的直流電阻為∞;加為常閉觸點,兩引出端的直流電阻為零。要判斷繼電器是否會轉換,可以根據它所在電路的電壓,給線圈通電(一般為幾伏或十幾伏的低壓宣流電源),然后測量原電觸點兩引出端的直流電阻,對常開觸點應從∞轉為o;對常閉觸點應從。轉換為∞,否則表明繼電器已損壞。武漢美的空調售后電話足球比分网:400-888-2362

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