國標(biāo)銅排載流量[建筑B類]

1、銅排/電線載流量表簡單估算法:1. 單條銅母排載流量 = 寬度(mm) x 厚度系數(shù)2. 雙母排載流量 = 寬度(mm) x 厚度系數(shù) x 1.5(經(jīng)驗系數(shù))3. 銅排和鋁排也可以按平方數(shù)來,通常銅應(yīng)該按5-8A/平方,鋁應(yīng)該按3-5A/平方常用銅排的載流量計算方法：1. 銅排【40】時銅排載流量 = 排寬(mm) x 厚度系數(shù)厚度(mm)1層銅排系數(shù)2層銅排系數(shù)3層銅排系數(shù)4層銅排系數(shù)銅排25系數(shù)鋁排40系數(shù)122031.64049.01.180.33101828.43644.181612.63239.261422.12834.341219.02429.4備注：不建議采用4層銅排，改由異形母

2、排替代2. 例如銅排為100mm x 10mm，要求環(huán)境溫度25，計算如下：載流量 = 100mm x 18(1層系數(shù)) x 1.18(25系數(shù)) = 2,124A常用銅排的尺寸及載流量表矩形銅排母排截面253540平放（A）豎放（A）平放（A）豎放（A）平放（A）豎放（A）15320021017618516217120328127523324521422525332334028530027128630445147539441536638540x459362552255048451040x566570058855155158050x581686072176066970550x690695579

3、781073577560x61069112594099087392060x812511320110111601016107060x1013951475123012961133119580x613601480119513001110120580x815531690136114801260137080x10174719001531166514171540100x6166518101557159213561475100x8191120801674182015461685矩形鋁排母排截面253540平放（A）豎放（A）平放（A）豎放（A）平放（A）豎放（A）1531561651381451271342

4、0320421518019016617525325226521923020421530434736530932528530040x445648040442537539540x551854045247541844050x563266555658551854550x670374061765057060060x682687073177068071560x8975102585590078883060x1011001155960101089093580x610501150930101086093580x81215132010501155985107080x10136014801190129511051200100x6131014251160126010701160100x8149516261310142612101315銅導(dǎo)線載流量(35)截面(