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1、铜排/电线载流量表简单估算法:1. 单条铜母排载流量 = 宽度(mm) x 厚度系数2. 双母排载流量 = 宽度(mm) x 厚度系数 x 1.5(经验系数)3. 铜排和铝排也可以按平方数来,通常铜应该按5-8A/平方,铝应该按3-5A/平方常用铜排的载流量计算方法：1. 铜排【40】时铜排载流量 = 排宽(mm) x 厚度系数厚度(mm)1层铜排系数2层铜排系数3层铜排系数4层铜排系数铜排25系数铝排40系数122031.64049.01.180.33101828.43644.181612.63239.261422.12834.341219.02429.4备注：不建议采用4层铜排，改由异形母
2、排替代2. 例如铜排为100mm x 10mm，要求环境温度25，计算如下：载流量 = 100mm x 18(1层系数) x 1.18(25系数) = 2,124A常用铜排的尺寸及载流量表矩形铜排母排截面253540平放（A）竖放（A）平放（A）竖放（A）平放（A）竖放（A）15320021017618516217120328127523324521422525332334028530027128630445147539441536638540x459362552255048451040x566570058855155158050x581686072176066970550x690695579
3、781073577560x61069112594099087392060x812511320110111601016107060x1013951475123012961133119580x613601480119513001110120580x815531690136114801260137080x10174719001531166514171540100x6166518101557159213561475100x8191120801674182015461685矩形铝排母排截面253540平放（A）竖放（A）平放（A）竖放（A）平放（A）竖放（A）1531561651381451271342
4、0320421518019016617525325226521923020421530434736530932528530040x445648040442537539540x551854045247541844050x563266555658551854550x670374061765057060060x682687073177068071560x8975102585590078883060x1011001155960101089093580x610501150930101086093580x81215132010501155985107080x10136014801190129511051200100x6131014251160126010701160100x8149516261310142612101315铜导线载流量(35)截面(mm)载流量(A)1101.5132.517423630104516852511035136501707021695263
