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时间:2020-06-22
《矩形铜排铜载流量选择一览表.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、矩形铜导体长期允许载流量(单位:A)导体尺寸h*b(mm*mm)单条双条三条四条平放竖放平放竖放平放竖放平放竖放15*320021020*326127525*332334030*445147540*459362540*566570050*581686050*690695560*610691125165017402060224060*812511320205021602565279060*1013951475243025603135330080*613601480194021102500272080*815531690241026
2、203100337080*10174719002850310036703990100*6166518102270247029203170100*8191120802810306036103930100*1021212310332036104280465048755300120*8221024003130340039954340120*1024352650377041004780520054305900载流量系按最高允许温度+70℃,基准环境温度+25℃,无风,无日照条件计算的,上表导体尺寸中,h为宽度,b为厚度。上表当导体为四条
3、时,平放,竖放时第二,三片间距皆为50mm.表1矩形母线参数表序号项目单位标准参数值硬铜硬铝1导体密度g/cm38.92.72抗拉极限强度MPa厚度1.25mm以下>300<120厚度1.25~3.28mm>270厚度3.53~7mm>260厚度7mm以上>250320℃时电阻率μΩ·m0.01720.02954熔点℃10836585每1℃温度电阻系数Ω·m0.003820.00366延伸率%637轧制截面误差%<1<38长度偏差mm<109壁厚偏差mm≤110弯曲度/弯曲半径按GBJ149-1990规定铝矩形母线(竖放或平放)
4、下,长期容许的载流量(见表2)。单片母线的载流量(A)θc=70℃表2-1母线尺寸宽*厚(mm)铝交流直流25℃30℃40℃25℃30℃40℃15ⅹ320ⅹ325ⅹ330ⅹ440ⅹ440ⅹ550ⅹ550ⅹ660ⅹ680ⅹ6100ⅹ660ⅹ880ⅹ8100ⅹ8120ⅹ860ⅹ1080ⅹ10100ⅹ10165215265365480540665740870102511501155132014251480162518201900155202249343451507625695818108013409651240153017851085
5、1390171013417421529638943853960070593211558311070131515409361200147516521526537048054567074588011701455104013551690204011801540191015520224934845151263070082711001368977127415901918111014501795134174215300389446543604713950118084411001370165595612501550120ⅹ1020701945
6、1680230021601865铜矩形母线竖放或平放下,长期容许的载流量单片母线的载流量(A)θc=70℃表2-2母线尺寸宽*厚(mm)铜交流直流25℃30℃40℃25℃30℃40℃15ⅹ320ⅹ325ⅹ330ⅹ440ⅹ440ⅹ550ⅹ550ⅹ660ⅹ680ⅹ6100ⅹ660ⅹ880ⅹ8100ⅹ8120ⅹ860ⅹ1080ⅹ10100ⅹ10120ⅹ102102753404756257008609551125148018101320169020802400147519002310265019725832044658765980989
7、810561390170012401590195522551388178621702490170223276385506567697774912120014701070137016851945119515401870215021027534047562570587096011451510187513451755218026001525199024702950197258320446587664818902107914201760126516502050244514321870232027701702232763855065717
8、0577892812251520109014201770210512351610200023902~3片组合涂漆母线的载流量(A)θc=70℃θa=25℃表2-3母线尺寸宽*厚(mm)×(mm)铝铜交流直流交流直流2片3片2片3片2片3片2片3片40ⅹ440ⅹ5
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