工(gong)業(ye)冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)機(ji)組(zu)應用廣泛(fan)，在有(you)工(gong)業(ye)的(de)(de)地方就要(yao)用到冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)設備(bei)，如：化工(gong)冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)、電鍍(du)冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)、食品冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)、電子加工(gong)冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)、模具冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)、印刷冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)等(deng)，而且大部(bu)分(fen)行業(ye)對于工(gong)業(ye)冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)要(yao)求很高(gao)的(de)(de)，大部(bu)分(fen)客戶的(de)(de)要(yao)求都是24小時(shi)運(yun)轉，所以(yi)對冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)的(de)(de)電源(yuan)電壓要(yao)求也(ye)很高(gao)，如果冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)的(de)(de)幾相電壓不平衡太于2%時(shi)，操作時(shi)有(you)可能損壞冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)，所以(yi)要(yao)控制好冷(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)。
冷水機(ji)電(dian)源電(dian)壓的檢測
如果冷水(shui)機(ji)標準電壓(ya)(ya)為(wei)(wei)3相，380V，50Hz，測(ce)得(de)UAB=376V，UAC=379V，UBC=385V。得(de)出平均(jun)電壓(ya)(ya)=(376+379+385)/3=380V：確定與平均(jun)電壓(ya)(ya)的偏(pian)差值：△UAB=380-376=4V，△UAC=380-379=1V，△UBC=385-380=5V，最大偏(pian)差值為(wei)(wei)5V，5/380=1.3%，得(de)出最大相電壓(ya)(ya)不平衡為(wei)(wei)1.3%。
如果(guo)測得該電(dian)(dian)(dian)源和電(dian)(dian)(dian)壓在(zai)正(zheng)(zheng)常范(fan)圍內，這(zhe)樣就可以(yi)正(zheng)(zheng)常開機。如果(guo)冷(leng)水(shui)機電(dian)(dian)(dian)源控制不(bu)好，那么損壞的(de)話就會有很高(gao)的(de)一個維修成本(ben)，按(an)正(zheng)(zheng)常來講的(de)話電(dian)(dian)(dian)壓都會比較正(zheng)(zheng)常。
冷水機(ji)的電源電壓(ya)最大可允許的相電壓(ya)不平(ping)衡(heng)(heng)為2%，相電流不平(ping)衡(heng)(heng)為10%。注：當(dang)相電壓(ya)不平(ping)衡(heng)(heng)大于2%，絕對不能開機(ji)操作。
冷(leng)(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)(ji)的工作(zuo)電源是(shi)3相，380V，50Hz。在運行(xing)冷(leng)(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)(ji)前，需(xu)要檢查電控(kong)柜中(zhong)電源部(bu)(bu)分(fen)和控(kong)制(zhi)部(bu)(bu)分(fen)有無異常(chang)(chang)，并固緊(jin)接(jie)(jie)線(xian)端子，包(bao)括總(zong)電源接(jie)(jie)線(xian)銅(tong)排，自動(dong)(dong)空氣斷路器(空氣開(kai)關)，Δ-Δ或Y-Δ壓縮機(ji)(ji)啟動(dong)(dong)電氣裝置，PLC觸摸屏(ping)，靶流(liu)開(kai)關，冷(leng)(leng)(leng)(leng)凍水(shui)(shui)(shui)泵，冷(leng)(leng)(leng)(leng)卻水(shui)(shui)(shui)泵聯動(dong)(dong)控(kong)制(zhi)線(xian)(控(kong)制(zhi)接(jie)(jie)點為無源接(jie)(jie)點)，溫度傳感器，冷(leng)(leng)(leng)(leng)凍，冷(leng)(leng)(leng)(leng)卻水(shui)(shui)(shui)泵，冷(leng)(leng)(leng)(leng)卻水(shui)(shui)(shui)塔聯動(dong)(dong)控(kong)制(zhi)線(xian)(控(kong)制(zhi)接(jie)(jie)點為無源接(jie)(jie)點)，電控(kong)儀表等(deng)等(deng)節(jie)點。待(dai)確(que)認好(hao)后，方可執行(xing)開(kai)機(ji)(ji)操(cao)作(zuo)，確(que)保冷(leng)(leng)(leng)(leng)水(shui)(shui)(shui)機(ji)(ji)組正常(chang)(chang)運行(xing)。
冷水機組屬于(yu)大功率機器，電壓(ya)基本(ben)都是工業電壓(ya)，380V，所以(yi)在安裝(zhuang)冷水機時最好(hao)安裝(zhuang)穩壓(ya)器。