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YSB815DJ電(dian)動(dong)(dong)機(ji)保護(hu)器(qi)測(ce)試(shi)儀(yi)適用于單相、三相熱繼電(dian)器(qi)及各(ge)種有(you)源(yuan)或無(wu)源(yuan)電(dian)動(dong)(dong)機(ji)保護(hu)器(qi)的過壓、過流、缺(que)相、不平衡、堵轉及時間(jian)測(ce)試(shi),還可測(ce)試(shi)電(dian)流繼電(dian)器(qi)的動(dong)(dong)作(zuo)電(dian)流及額(e)定電(dian)流的動(dong)(dong)作(zuo)時間(jian)。