矩形母線技術(shù)規(guī)范

1、技術(shù)規(guī)范書技術(shù)規(guī)范書項(xiàng)目單位項(xiàng)目單位工程名稱工程名稱貨物描述貨物描述矩形母線銅4000A表1矩形母線參數(shù)表標(biāo)準(zhǔn)參數(shù)值序號(hào)項(xiàng)目單位硬銅硬鋁投標(biāo)人保證值備注1導(dǎo)體密度gcm38.92.78.92.7厚度1.25mm以下300厚度1.25mm以下300厚度1.25～3.28mm270厚度1.25～3.28mm270厚度3.53～7mm260厚度3.53～7mm2602抗拉極限強(qiáng)度MPa厚度7mm以上250250120320℃時(shí)電阻率μΩm0.

2、01720.02950.01720.02954熔點(diǎn)℃108365810836585每1℃溫度電阻系數(shù)Ωm0.003820.00360.003820.00366延伸率%63637軋制截面誤差%13138長(zhǎng)度偏差mm10109壁厚偏差mm≤1≤110彎曲度彎曲半徑按GBJ1491990規(guī)定彎曲半徑按GBJ1491990規(guī)定鋁矩形母線（豎放或平放）下，長(zhǎng)期容許的載流量（見表2）。單片母線的載流量（A）θc=70℃表21鋁母線尺寸寬厚（mm）交

3、流直流100ⅹ8120ⅹ860ⅹ1080ⅹ10100ⅹ10120ⅹ102080240014751900231026501955225513881786217024901685194511951540187021502180260015251990247029502050244514321870232027701770210512351610200023902～3片組合涂漆母線的載流量（A）θc=70℃θa=25℃表23鋁銅交流直流交流直

4、流母線尺寸寬厚（mm）2片3片2片3片2片3片2片3片40ⅹ440ⅹ550ⅹ550ⅹ660ⅹ680ⅹ6100ⅹ660ⅹ880ⅹ8100ⅹ8120ⅹ860ⅹ1080ⅹ10100ⅹ10120ⅹ101350163019351680204023902650201024102860320017202100250021802620305033802650310036504100855965118013151555205525151840240029

5、4533502110273533503900194024603040233029753620425027203440416048601740211024702160262030603400256031003610410022402720317027903370393043403300399046505200109012501525170019902630324524853095381044002725351043255000249532