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華巨制冷:電源電壓在工業冷水機中的意義是什么?

時間:2021-07-10瀏覽量:1587

  工(gong)(gong)業(ye)(ye)冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji)機(ji)(ji)(ji)(ji)組應用廣泛,在有工(gong)(gong)業(ye)(ye)的(de)地(di)方就(jiu)要(yao)用到(dao)冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji)設(she)備,如:化工(gong)(gong)冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji)、電(dian)鍍冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji)、食品冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji)、電(dian)子加工(gong)(gong)冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji)、模(mo)具(ju)冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji)、印刷(shua)冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji)等,而且大(da)部分行業(ye)(ye)對(dui)于工(gong)(gong)業(ye)(ye)冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji)要(yao)求(qiu)(qiu)很高的(de),大(da)部分客戶(hu)的(de)要(yao)求(qiu)(qiu)都是(shi)24小時(shi)(shi)運轉,所以對(dui)冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji)的(de)電(dian)源(yuan)電(dian)壓要(yao)求(qiu)(qiu)也很高,如果冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji)的(de)幾相電(dian)壓不平衡太(tai)于2%時(shi)(shi),操作時(shi)(shi)有可能損壞冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji),所以要(yao)控制(zhi)好冷(leng)(leng)水(shui)(shui)機(ji)(ji)(ji)(ji)。

  冷水機電源電壓的檢測(ce)

  如果冷水機標(biao)準(zhun)電壓為3相(xiang),380V,50Hz,測得(de)(de)(de)UAB=376V,UAC=379V,UBC=385V。得(de)(de)(de)出(chu)平(ping)(ping)均(jun)電壓=(376+379+385)/3=380V:確定與平(ping)(ping)均(jun)電壓的偏差值:△UAB=380-376=4V,△UAC=380-379=1V,△UBC=385-380=5V,最大偏差值為5V,5/380=1.3%,得(de)(de)(de)出(chu)最大相(xiang)電壓不(bu)平(ping)(ping)衡為1.3%。

  如果(guo)(guo)測(ce)得該電(dian)(dian)源和(he)電(dian)(dian)壓在正常范圍內,這樣就可(ke)以正常開(kai)機(ji)。如果(guo)(guo)冷水機(ji)電(dian)(dian)源控制不好(hao),那么(me)損壞的(de)話就會(hui)有很高的(de)一個維修(xiu)成本,按正常來(lai)講的(de)話電(dian)(dian)壓都會(hui)比較正常。

  冷水機的(de)電源電壓(ya)最大(da)可允許的(de)相電壓(ya)不(bu)(bu)平衡(heng)為2%,相電流不(bu)(bu)平衡(heng)為10%。注:當相電壓(ya)不(bu)(bu)平衡(heng)大(da)于2%,絕對不(bu)(bu)能開機操作。

  冷(leng)(leng)水(shui)機(ji)(ji)(ji)的工作(zuo)電(dian)(dian)源是3相,380V,50Hz。在運(yun)行(xing)冷(leng)(leng)水(shui)機(ji)(ji)(ji)前,需要(yao)檢查電(dian)(dian)控(kong)(kong)(kong)柜中電(dian)(dian)源部分(fen)和控(kong)(kong)(kong)制(zhi)部分(fen)有無異常(chang),并固緊接線端子,包(bao)括總電(dian)(dian)源接線銅排,自動空氣(qi)斷路(lu)器(空氣(qi)開(kai)關),Δ-Δ或Y-Δ壓縮機(ji)(ji)(ji)啟動電(dian)(dian)氣(qi)裝(zhuang)置,PLC觸摸屏,靶流開(kai)關,冷(leng)(leng)凍水(shui)泵,冷(leng)(leng)卻水(shui)泵聯動控(kong)(kong)(kong)制(zhi)線(控(kong)(kong)(kong)制(zhi)接點(dian)(dian)為無源接點(dian)(dian)),溫(wen)度(du)傳感(gan)器,冷(leng)(leng)凍,冷(leng)(leng)卻水(shui)泵,冷(leng)(leng)卻水(shui)塔聯動控(kong)(kong)(kong)制(zhi)線(控(kong)(kong)(kong)制(zhi)接點(dian)(dian)為無源接點(dian)(dian)),電(dian)(dian)控(kong)(kong)(kong)儀表等(deng)等(deng)節點(dian)(dian)。待確認好后,方可執行(xing)開(kai)機(ji)(ji)(ji)操作(zuo),確保冷(leng)(leng)水(shui)機(ji)(ji)(ji)組正常(chang)運(yun)行(xing)。

  冷水機組屬于大功率機器(qi),電(dian)壓(ya)基本都(dou)是工業(ye)電(dian)壓(ya),380V,所以在安(an)裝冷水機時最(zui)好(hao)安(an)裝穩(wen)壓(ya)器(qi)。

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