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shou先,我們公司(si)要制(zhi)定(ding)400KW是(shi)(shi)(shi)三(san)相四線(xian)四線(xian)制(zhi)有功(gong)工(gong)(gong)作額定(ding)功(gong)率,而三(san)相四線(xian)四線(xian)制(zhi)有功(gong)工(gong)(gong)作額定(ding)功(gong)率的來計算計算方式是(shi)(shi)(shi)P=√3IUcosΦ。基于這家關系式,人們行(xing)統計出(chu)工(gong)(gong)作電(dian)流I。比(bi)如電(dian)壓值是(shi)(shi)(shi)380V380V,熱(re)效率質數0.9,那(nei) 特(te)殊工(gong)(gong)作電(dian)流就675.3A。可(ke)是(shi)(shi)(shi),顧慮到現(xian)場(chang)啟用中的滿強(qiang)度電(dian)流量已經會稍大(da)那(nei)些,各位是(shi)(shi)(shi)可(ke)以(yi)取另一個近似值值,譬如760A。
接成功來,各位要(yao)(yao)不(bu)同(tong)此(ci)工作電(dian)(dian)流值來的(de)確(que)保(bao)應該的(de)銅芯低(di)壓(ya)(ya)低(di)壓(ya)(ya)通(tong)信(xin)通(tong)信(xin)電(dian)(dian)纜(lan)。通(tong)常情況下,電(dian)(dian)力(li)網低(di)壓(ya)(ya)低(di)壓(ya)(ya)通(tong)信(xin)通(tong)信(xin)電(dian)(dian)纜(lan)的(de)的(de)確(que)保(bao)要(yao)(yao)提(ti)供可(ke)以(yi)溫度升降(jiang)的(de)、電(dian)(dian)壓(ya)(ya)降(jiang)損(sun)耗、自(zi)動化設備撓度等符合要(yao)(yao)求。而低(di)壓(ya)(ya)低(di)壓(ya)(ya)通(tong)信(xin)通(tong)信(xin)電(dian)(dian)纜(lan)的(de)截(jie)總面積積的(de)確(que)保(bao),主要(yao)(yao)的(de)是不(bu)同(tong)低(di)壓(ya)(ya)低(di)壓(ya)(ya)通(tong)信(xin)通(tong)信(xin)電(dian)(dian)纜(lan)的(de)安全衛生(sheng)載用戶流量(liang)來確(que)保(bao)的(de)。
對于760A的電流,我們(men)可(ke)以選(xuan)擇(ze)。這(zhe)種電纜在(zai)標準敷設條件下的額定載流量可(ke)以達到760A左(zuo)右,能夠滿足400KW的功(gong)率需求。
當然(ran),如果輸送距(ju)離比較遠的(de)(de)(de)話(hua),可能需要考(kao)慮使用(yong)更大截(jie)面積(ji)的(de)(de)(de)電(dian)(dian)(dian)纜,比如400mm2或者500mm2的(de)(de)(de)銅(tong)芯電(dian)(dian)(dian)纜。但是,這種(zhong)粗芯電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜的(de)(de)(de)敷設會比較困難,所以也可以考(kao)慮使用(yong)截(jie)面積(ji)為185mm2的(de)(de)(de)雙電(dian)(dian)(dian)纜并聯使用(yong)。
總之,400KW的(de)功率需(xu)要(yao)使用截(jie)面(mian)積至少(shao)為(wei)300mm2的(de)銅(tong)芯電纜,具體選(xuan)擇哪種規格,還(huan)需(xu)要(yao)根據實際(ji)情況來確定哦!
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