工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)機(ji)(ji)(ji)組應用廣泛(fan)，在有工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)的(de)地方就要用到冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)設備(bei)，如(ru)(ru)：化工(gong)(gong)(gong)(gong)冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)、電(dian)鍍冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)、食(shi)品冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)、電(dian)子加工(gong)(gong)(gong)(gong)冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)、模具冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)、印刷冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)等，而且大部分行業(ye)(ye)(ye)對(dui)于(yu)工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)要求(qiu)(qiu)很高(gao)的(de)，大部分客(ke)戶(hu)的(de)要求(qiu)(qiu)都是24小時運轉，所以(yi)對(dui)冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)的(de)電(dian)源電(dian)壓(ya)要求(qiu)(qiu)也很高(gao)，如(ru)(ru)果冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)的(de)幾相電(dian)壓(ya)不(bu)平衡太于(yu)2%時，操(cao)作時有可能損(sun)壞(huai)冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)，所以(yi)要控制好冷(leng)水(shui)(shui)(shui)機(ji)(ji)(ji)。
冷水(shui)機電源電壓的(de)檢(jian)測
如果冷水機標準電壓(ya)(ya)為3相，380V，50Hz，測得(de)UAB=376V，UAC=379V，UBC=385V。得(de)出平均電壓(ya)(ya)=(376+379+385)/3=380V：確定與(yu)平均電壓(ya)(ya)的偏(pian)差值：△UAB=380-376=4V，△UAC=380-379=1V，△UBC=385-380=5V，最大(da)偏(pian)差值為5V，5/380=1.3%，得(de)出最大(da)相電壓(ya)(ya)不(bu)平衡為1.3%。
如(ru)果測(ce)得該電源(yuan)和電壓(ya)在(zai)正常(chang)(chang)范圍內，這樣(yang)就(jiu)可以(yi)正常(chang)(chang)開機。如(ru)果冷水機電源(yuan)控制不(bu)好，那么損壞的話就(jiu)會(hui)有很高的一個維修成本，按正常(chang)(chang)來講的話電壓(ya)都會(hui)比(bi)較正常(chang)(chang)。
冷水機(ji)的(de)電(dian)源電(dian)壓最大可(ke)允許的(de)相電(dian)壓不(bu)平衡為2%，相電(dian)流不(bu)平衡為10%。注：當相電(dian)壓不(bu)平衡大于2%，絕對不(bu)能開機(ji)操作(zuo)。
冷(leng)水機(ji)的工(gong)作(zuo)電源(yuan)(yuan)(yuan)是(shi)3相，380V，50Hz。在運行冷(leng)水機(ji)前，需要檢查(cha)電控(kong)柜中電源(yuan)(yuan)(yuan)部分(fen)和控(kong)制部分(fen)有(you)無異(yi)常，并固緊接線(xian)(xian)(xian)端子，包括總電源(yuan)(yuan)(yuan)接線(xian)(xian)(xian)銅排，自動(dong)(dong)空氣斷路器(空氣開(kai)(kai)關)，Δ-Δ或Y-Δ壓縮機(ji)啟動(dong)(dong)電氣裝置，PLC觸摸屏，靶(ba)流開(kai)(kai)關，冷(leng)凍水泵，冷(leng)卻(que)水泵聯(lian)(lian)動(dong)(dong)控(kong)制線(xian)(xian)(xian)(控(kong)制接點(dian)(dian)(dian)為無源(yuan)(yuan)(yuan)接點(dian)(dian)(dian))，溫度(du)傳感器，冷(leng)凍，冷(leng)卻(que)水泵，冷(leng)卻(que)水塔聯(lian)(lian)動(dong)(dong)控(kong)制線(xian)(xian)(xian)(控(kong)制接點(dian)(dian)(dian)為無源(yuan)(yuan)(yuan)接點(dian)(dian)(dian))，電控(kong)儀(yi)表等等節點(dian)(dian)(dian)。待確認好后，方可執(zhi)行開(kai)(kai)機(ji)操作(zuo)，確保冷(leng)水機(ji)組正常運行。
冷水(shui)機組屬(shu)于大功率機器(qi)，電壓基本都是(shi)工業電壓，380V，所以在安裝冷水(shui)機時最好安裝穩壓器(qi)。