单片母线的载流量（θ70℃）

母线尺寸宽X厚）mmXmm15x320x325x330x440x440x550x550x6363x6380x63100x6363x880x8100x8125x863x1080x10100x10125x1025℃1652152653654805406657408701150142510251320162519001155148018202070交流30℃15520224934345150762569581810801340965124015301785108513901710194535℃145189233321422475585651765101012559021160143016701016130016001820
铝（A）直流40℃134174215296389438539600705932115583110701315154093612001475168025℃165215265370480545670745880117014551040135516902040118015401910230030℃15520224934845151263070082711001368977127415901918111014501795216035℃14518923332642248059065577510301280915119214881795104013551680202040℃134174215300389446543604713950118084411001370165595612501550186525℃21027534047562570086095511251480181013201690208024001475190023102650交流30℃1972583204465876598098981056139017001240159019552255138817862170249035℃1852422994185506157568409901300159011601490183021101300167020302330
铜（A）直流40℃170223276385506567697774912120014701070137016851945119515401870215025℃2102753404756257058709601145151018751345175521802600152519902470295030℃1972583204465876648189021079142017601265165020502445143218702320277035℃1852422994185506207658451010133016501185154519202290134017502175259540℃1702232763855065717057789281225152010901420177021051235161020002390
注本表系母线立放的数据。当母线平放且宽度≤63mm时，表中数据应乘以095，63mm时应乘以092。
23片组合涂漆母线的载流量（θ70℃

θa25℃铜（A）
）
母线尺寸宽X厚mmXmm40X440X550X550X6363X6380X63100X6363X880X8100X8125X863X1080X10100X10125X10135016301935168020402390265020102410286032002片交流
铝（A）直流3片2片85596511801315172021002500218026203050338026503100365041001555205525151840240029453350211027353350390019402460304023302975362042502720344041604860174021102470216026203060340025603100361041003片2片交流3片
直流2片10901250152517002240272031702790337039304340330039904650520019902630324524853095381044002725351043255000249532203940302038504690560035304450538562503片
f注①本表系母线立放的数据。当母线平放且宽度≤63mm时，表中数据应乘以095，63mm时应乘以092。②本表母线间距均等于母线厚度。
开关柜和组合式变电站中常用到铜排，铜排截面积的选择如何确定？简易记住任何规格的矩形母排的载流量矩形母线载流量：40℃r