電(dian)流(liu)I=功率P/電(dian)壓(ya)U*功率因數cosФ.三相設備電(dian)流(liu)I=功率P/(電(dian)壓(ya)U*功率因數cosФ*根號3).你可從P=1.732*U*I。

答案(an): 電工(gong)知識:6個實用的(de)電工(gong)計(ji)算(suan)公(gong)式,知道功(gong)(gong)(gong)率(lv)怎(zen)么算(suan)電流?教給你答案(an): 負載(zai)雖然有電流或(huo)功(gong)(gong)(gong)率(lv)數(shu)據(ju),但沒有給出負載(zai)的(de)性(xing)質,難以計(ji)算(suan),出示(shi)公(gong)式自行根據(ju)負載(zai)性(xing)質計(ji)算(suan)。 單相功(gong)(gong)(gong)率(lv)公(gong)式: p=u×i×cosφ (感性(xing)負載(zai)的(de)功(gong)(gong)(gong)率(lv)因數(shu)cosφ在0.7～0.85之。

知道設備(bei)功(gong)(gong)率(lv)(lv)如何計(ji)算(suan)設備(bei)電(dian)流(liu),答案: 樓上給的是視在功(gong)(gong)率(lv)(lv)計(ji)算(suan)公式,我(wo)前(qian)些日(ri)子(zi)遇到這(zhe)個問題了,按廠(chang)家樣(yang)本標(biao)的電(dian)機功(gong)(gong)率(lv)(lv)如上計(ji)算(suan)怎(zen)么也和(he)實測(ce)的不一(yi)樣(yang)。問題在于廠(chang)家給你的有(you)可能是輸(shu)入功(gong)(gong)率(lv)(lv),有(you)可能是輸(shu)更精(jing)確的計(ji)算(suan),要(yao)查閱《電(dian)氣設計(ji)手冊》。 問題六:知道設備(bei)功(gong)(gong)率(lv)(lv),怎(zen)樣(yang)求一(yi)小時用(yong)了多少度(du)電(dian)呢?!有(you)沒(mei)有(you)公式計(ji)算(suan)之(zhi)類的,請各(ge)位大師指點,謝謝 只(zhi)是知道設備(bei)功(gong)(gong)率(lv)(lv)不行,。

用電(dian)(dian)(dian)(dian)器電(dian)(dian)(dian)(dian)流(liu),在實際的(de)電(dian)(dian)(dian)(dian)氣接(jie)線,配(pei)線,維(wei)修過程中,很(hen)多的(de)師傅往往看(kan)一眼設備(bei)(bei)(bei)或者用電(dian)(dian)(dian)(dian)器的(de)功(gong)率能(neng)(neng)夠(gou)知(zhi)道對應(ying)的(de)電(dian)(dian)(dian)(dian)流(liu)值,速度之快讓人咋舌。 更是(shi)讓很(hen)多的(de)電(dian)(dian)(dian)(dian)工(gong)新手們(men)特別羨(xian)慕,一旦你去問(wen)電(dian)(dian)(dian)(dian)已知(zhi)設備(bei)(bei)(bei)為單相220V供電(dian)(dian)(dian)(dian),那么,根據口訣(jue)(jue):單相(220V),四倍(bei)半(ban)可(ke)知(zhi):設備(bei)(bei)(bei)電(dian)(dian)(dian)(dian)流(liu)=設備(bei)(bei)(bei)功(gong)率(5)×4.5=22.5A 根據口訣(jue)(jue):10下五可(ke)知(zhi):選(xuan)擇(ze)4mm2的(de)鋁(lv)線安全(quan)載流(liu)量為20A,不能(neng)(neng)滿(man)足要求(qiu)。選(xuan)擇(ze)6mm2的(de)鋁(lv)線。

1天(tian)前風(feng)機實際(ji)電(dian)流(liu)和風(feng)壓可以(yi)在儀(yi)表上讀出。我想(xiang)知(zhi)道風(feng)機在運行時的(de)實際(ji)通風(feng)量應該(gai)如何計算(suan)(suan),功(gong)率(lv)又應該(gai)如何知(zhi)道功(gong)率(lv)怎么(me)算(suan)(suan)電(dian)流(liu),知(zhi)道功(gong)率(lv)怎樣(yang)算(suan)(suan)電(dian)流(liu),我們在初中物理(li)上學過(guo),不(bu)過(guo)那是簡單的(de)了,具體用到(dao)生活中,還要有一些變化的(de)。。

表14 電(dian)焊(han)機、X光(guang)(guang)機的電(dian)流計算 注(zhu):X光(guang)(guang)機的銘牌上如注(zhu)有(you):千伏安(an)(KV)、毫(hao)安(an)(mA)時,計算公(gong)式(shi)中的功率(千伏安(an))=千伏安(an)(KV)×1000/1000大家(jia)好,一(yi)個主電(dian)源接一(yi)臺(tai)設備,設備里面既有(you)380V2.2KW電(dian)機5個,又有(you)220V1KW加熱器2套(tao),請問設備總功率該怎么(me)算,總電(dian)。

答案: 天(tian)壓乘以電(dian)流(liu)是它的(de)功率(lv)(lv)(lv),這是一個粗略的(de)算(suan)法(fa)答案: 三相(xiang)電(dian)功率(lv)(lv)(lv)計算(suan)公式(shi) : 功率(lv)(lv)(lv)分三種功率(lv)(lv)(lv),有功功率(lv)(lv)(lv)P、無功功率(lv)(lv)(lv)Q和視(shi)在(zai)功率(lv)(lv)(lv)S。 電(dian)壓與電(dian)流(liu)之間的(de)相(xiang)位(wei)差(Φ)的(de)余弦叫做功率(lv)(lv)(lv)因數,用符(fu)號cosΦ表示,在(zai)數值上,功率(lv)(lv)(lv)因數是有。

大家好,一(yi)個主電(dian)源接(jie)一(yi)臺設(she)(she)備(bei),設(she)(she)備(bei)里面既有(you)380V2.2KW電(dian)機5個,又(you)有(you)220V1KW加熱(re)器2套(tao),請(qing)問設(she)(she)備(bei)總(zong)功率(lv)該怎么(me)算(suan),總(zong)電(dian)通過功率(lv)怎么(me)算(suan)電(dian)流?_物理(li)_自然科學_專業資(zi)料(liao)。老電(dian)工為(wei)什么(me)能看一(yi)眼功率(lv)知(zhi)道電(dian)流?秘訣在(zai)(zai)這! 在(zai)(zai)工作中,經常需要用(yong)到估算(suan)設(she)(she)備(bei)或(huo)者用(yong)電(dian)器的電(dian)流,在(zai)(zai)實際的電(dian)氣接(jie)線,配線, 維。

功(gong)率(lv)計算(suan)公式非(fei)常的簡單,只需(xu)要知道設備電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)和電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)兩個參數。具(ju)體(ti)的功(gong)率(lv) 如(ru)果你想在同(tong)一電(dian)(dian)(dian)(dian)(dian)(dian)路上使用(yong)多個設備,那么你要將所有設備功(gong)率(lv)相加,來計算(suan)總(zong)功(gong)率(lv)。 如(ru)何使用(yong)鉤錶來量(liang)測(ce)答案: 直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)和純電(dian)(dian)(dian)(dian)(dian)(dian)阻性交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(比(bi)如(ru)土(tu)電(dian)(dian)(dian)(dian)(dian)(dian)爐(lu)、熱得快等電(dian)(dian)(dian)(dian)(dian)(dian)熱類電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)),電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)=功(gong)率(lv)÷電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya) 非(fei)純電(dian)(dian)(dian)(dian)(dian)(dian)阻類(例如(ru)電(dian)(dian)(dian)(dian)(dian)(dian)腦、冰(bing)箱、充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)等非(fei)電(dian)(dian)(dian)(dian)(dian)(dian)熱類電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi))交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi),電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)=功(gong)率(lv)÷電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)÷電(dian)(dian)(dian)(dian)(dian)(dian)。

設(she)備(bei)功率(lv)計(ji)(ji)算(suan)公(gong)式(shi)知識來自于造(zao)價(jia)通云(yun)知平臺上百(bai)萬建設(she)工(gong)程行業專業人士的經驗分享及心得交(jiao)流,了(le)解更多設(she)備(bei)功率(lv)計(ji)(ji)算(suan)公(gong)式(shi)知識、設(she)備(bei)功率(lv)計(ji)(ji)算(suan)公(gong)式(shi)資訊及下載設(she)備(bei)功率(lv)計(ji)(ji)算(suan)公(gong)式(shi)相(xiang)關精品(pin)資答(da)案: 需要知道電壓(ya),P=U*I,電流I=P/U,如(ru)果電壓(ya)取220V,=15000/220=68.18A。

求各種(zhong)用(yong)電設(she)(she)備(bei)(bei)的(de)電流計算公式,1.普通(tong)白熾(chi)燈和電熱設(she)(she)備(bei)(bei):I=P/U2.日光燈,高壓水銀燈,高壓鈉燈等照明設(she)(she)備(bei)(bei):220V單(dan)相(xiang)(xiang)(xiang)I=P/(Ucos￠) 380V三(san)相(xiang)(xiang)(xiang)四線制I=P/(&radic3Ucos已(yi)知(zhi)設(she)(she)備(bei)(bei)為(wei)單(dan)相(xiang)(xiang)(xiang)220V供(gong)電,那么(me),根據(ju)口訣:單(dan)相(xiang)(xiang)(xiang)(220V),四倍半可知(zhi):設(she)(she)備(bei)(bei)電流=設(she)(she)備(bei)(bei)功率(lv)(5)×4.5=22.5A 根據(ju)口訣:10下五可知(zhi):選(xuan)擇4mm2的(de)鋁(lv)線安全載流量為(wei)20A,不能滿(man)足要求。選(xuan)擇6mm2的(de)鋁(lv)線。

知(zhi)道設備功(gong)(gong)(gong)(gong)率(lv)(lv)如何(he)計(ji)(ji)(ji)算(suan)(suan)(suan)設備電流(liu),答(da)案(an): 可(ke)(ke)以(yi)利(li)用電功(gong)(gong)(gong)(gong)率(lv)(lv)計(ji)(ji)(ji)算(suan)(suan)(suan)公(gong)(gong)式來計(ji)(ji)(ji)算(suan)(suan)(suan)。 電功(gong)(gong)(gong)(gong)率(lv)(lv)計(ji)(ji)(ji)算(suan)(suan)(suan)公(gong)(gong)式:P=W/t =UI 在純電阻電路中,根(gen)據歐姆定律U=IR代入P=UI中還可(ke)(ke)以(yi)得到如何(he)根(gen)據功(gong)(gong)(gong)(gong)率(lv)(lv)計(ji)(ji)(ji)算(suan)(suan)(suan)電流(liu) 電流(liu)的大小直接與(yu)(yu)功(gong)(gong)(gong)(gong)率(lv)(lv)有關,也與(yu)(yu)電壓,相別,力率(lv)(lv)（又稱(cheng)功(gong)(gong)(gong)(gong)率(lv)(lv)因(yin)數）等有關。一般有公(gong)(gong)式可(ke)(ke)供計(ji)(ji)(ji)算(suan)(suan)(suan),由于(yu)工廠(chang)常(chang)用的都是380/220伏三相四線系統,因(yin)此,可(ke)(ke)以(yi)。