要(yao)(yao)(yao)求(qiu)內(nei)芯(xin)一(yi)(yi)定(ding)要(yao)(yao)(yao)用無氧銅。非標(biao)的(de)如(ru)黑桿銅，宿州電纜，可能存在事故隱(yin)患。5、內(nei)芯(xin)的(de)粗(cu)細國家(jia)有(you)(you)(you)一(yi)(yi)定(ding)的(de)要(yao)(yao)(yao)求(qiu)，但(dan)不是(shi)(shi)很(hen)(hen)(hen)嚴格。可是(shi)(shi)不會錯很(hen)(hen)(hen)多，只是(shi)(shi)很(hen)(hen)(hen)小的(de)一(yi)(yi)點點，一(yi)(yi)般用眼看不出來的(de)誤差(cha)。6、長度，國家(jia)沒(mei)有(you)(you)(you)強制(zhi)一(yi)(yi)定(ding)要(yao)(yao)(yao)打(da)米(mi)(mi)，鋁合金電纜型號，可是(shi)(shi)有(you)(you)(you)很(hen)(hen)(hen)多廠(chang)家(jia)也打(da)了米(mi)(mi)，打(da)了米(mi)(mi)的(de)并不一(yi)(yi)定(ding)是(shi)(shi)的(de)，但(dan)一(yi)(yi)般的(de)沒(mei)有(you)(you)(you)打(da)米(mi)(mi)。非標(biao)的(de)打(da)米(mi)(mi)那只是(shi)(shi)一(yi)(yi)種手段(duan)。7、國家(jia)規定(ding)電線上一(yi)(yi)定(ding)要(yao)(yao)(yao)打(da)有(you)(you)(you)一(yi)(yi)定(ding)的(de)標(biao)識，1大不會超過500mm都會有(you)(you)(you)下個(ge)相同的(de)標(biao)識打(da)出來，上面一(yi)(yi)般有(you)(you)(you)產(chan)品的(de)商(shang)標(biao)、廠(chang)家(jia)名稱、執行標(biao)準等(deng)。

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)加上交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，就有電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)流(liu)過，當(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓的(de)幅值和(he)頻率一定時，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)大小(xiao)是(shi)正(zheng)比(bi)于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(Cx)。對于超高壓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)，這(zhe)種電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)可能(neng)達(da)到與額定電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)可以相比(bi)的(de)數值，110kv電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)廠家，成為限(xian)制電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)容量和(he)傳輸距離的(de)重(zhong)要因(yin)素。因(yin)此電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容也是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)主(zhu)要的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性能(neng)參數之(zhi)一。在(zai)(zai)交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)中(zhong)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)中(zhong)的(de)絕(jue)緣體由于泄露電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)和(he)各種極化存(cun)在(zai)(zai)，會(hui)形成介(jie)(jie)質(zhi)損耗(hao)(hao)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)橋架報價，以介(jie)(jie)質(zhi)損耗(hao)(hao)因(yin)數或損耗(hao)(hao)角正(zheng)切值(TAN)來表示，它(ta)不但浪費電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)，而且會(hui)使介(jie)(jie)質(zhi)(絕(jue)緣體)發熱，加速絕(jue)緣老化，因(yin)此TAN也是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)主(zhu)要參數之(zhi)一。

在(zai)電纜(lan)(lan)(lan)(lan)的(de)(de)(de)現(xian)場(chang)敷設過(guo)程中(zhong)電纜(lan)(lan)(lan)(lan)護(hu)套表面刮(gua)傷破(po)損的(de)(de)(de)現(xian)象是普遍存在(zai)的(de)(de)(de)，損傷輕(qing)微的(de)(de)(de)只傷及(ji)了護(hu)套，如何(he)修(xiu)補能(neng)保證質(zhi)量(liang)，而(er)且修(xiu)補時間短，又能(neng)保證質(zhi)量(liang)日(ri)益成為(wei)電纜(lan)(lan)(lan)(lan)消費者普遍關心的(de)(de)(de)問題。而(er)且投(tou)入(ru)小(xiao)，在(zai)現(xian)場(chang)的(de)(de)(de)惡劣條(tiao)件下又容易實(shi)現(xian)，因此現(xian)場(chang)護(hu)套的(de)(de)(de)修(xiu)補技(ji)術及(ji)質(zhi)量(liang)日(ri)益成為(wei)用戶關心的(de)(de)(de)問題。為(wei)便(bian)于(yu)電纜(lan)(lan)(lan)(lan)現(xian)場(chang)修(xiu)補工(gong)作(zuo)的(de)(de)(de)順(shun)利進行，施工(gong)單位要配備有野外小(xiao)型發電機。同時處于(yu)現(xian)場(chang)修(xiu)補的(de)(de)(de)方(fang)便(bian)現(xian)在(zai)提供(gong)的(de)(de)(de)塑料焊(han)的(de)(de)(de)質(zhi)量(liang)要過(guo)硬。