電壓降計(jì)算小工具

項(xiàng)次,CABLENUMBER,From設(shè)備,設(shè)備功率因素COS?,組數(shù),電纜線數(shù),電纜蕊數(shù),CABLESIZE(mm2),段長(zhǎng)(M),用電量,電壓,允許壓降,允許壓降,計(jì)算電壓降(V),NFB額定,YJV電纜安培載流量,若迭電纜,計(jì)算電壓降(V)

,,,,,,,,,kw,V,,,,,,(mm2),

1,NB-1,NB-1,100%,1,1,5,150,450,150,380,≤5%,19,14.08,250,315(275),120,17.61

2,NB-2,NB-2,90%,1,1,5,150,450,150,380,≤5%,19,15.65,225,315,120,19.56

3,NB-3,NB-3,80%,1,1,5,150,450,150,380,≤5%,19,17.61,200,315,120,22.01

3,NB-3,NB-3,70%,1,1,5,150,450,150,380,≤5%,19,20.12,175,315,120,25.15

4,NB-4,NB-4,60%,1,1,5,150,450,150,380,≤5%,19,23.47,150,315,120,29.34

5,NB-5,NB-5,50%,1,1,5,150,450,150,380,≤5%,19,28.17,125,315,120,35.21

,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,

注：,1、有黃色標(biāo)示者，線徑需增大（原為100改為國(guó)標(biāo)120，原為38改為國(guó)標(biāo)50）。,,,,,,,,,,,,,,,,

,"2、其它沒特別標(biāo)示者，經(jīng)核算按以下轉(zhuǎn)換可滿足系統(tǒng)要求（原臺(tái)標(biāo)為100改為國(guó)標(biāo)95，臺(tái)標(biāo)為,38改為國(guó)標(biāo)35）。",,,,,,,,,,,,,,,,

,3.按線路長(zhǎng)度及允許電壓降計(jì)算電纜線蕊截面公式如下：,,,,,,,,,,,,（ρ銅＝0.0206Ω.mm2/m）,,,,

,,允許電壓降%U=IR=(P/1.732*U*COS?)*(電纜長(zhǎng)度*銅電阻率)/電纜截面,,,,,,,,,,,,,,,

,,5%U=0.05*380=19,,,,,,,,,,,,,,,

,4.導(dǎo)線管槽（容許溫度90°周溫35°）YJVRB電纜，XLPE(本表考慮用于金屬管配線，電纜及金屬線槽配線。),,,,,,,,,,,,,,,,

,5.本表所含導(dǎo)線數(shù)包括中性線，控制線，接地線，但單相三線式或三相四線式電路供應(yīng)放電管理辦法燈者，因中性線有第三皆波電流，仍應(yīng)計(jì)算。,,,,,