并行使用電纜時，兩根電纜的載流量必須均勻分布，否則會引起電纜的熱擊穿。湖北電纜銷售批發廠家將在下面向您解釋。

首先，對于并聯使用的(de)(de)兩(liang)根(gen)電(dian)源線，盡量(liang)具有相(xiang)同(tong)的(de)(de)電(dian)纜型(xing)號和規格長(chang)度，以便在接(jie)通電(dian)源時，可以將兩(liang)根(gen)電(dian)源線的(de)(de)各種(zhong)參數設置為 基(ji)本接(jie)近，電(dian)流承載(zai)(zai)能力基(ji)本均勻分布。 單根(gen)電(dian)纜過載(zai)(zai)，并且(qie)事先發生大面(mian)積的(de)(de)加熱和燃(ran)燒(shao)。

其(qi)次，應該(gai)適當地延長(chang)并(bing)(bing)行(xing)運(yun)行(xing)的(de)(de)電纜之間的(de)(de)距離，這樣(yang)，當電纜發生(sheng)故(gu)障時(shi)，不會(hui)影(ying)響并(bing)(bing)排(pai)使(shi)用的(de)(de)并(bing)(bing)行(xing)電纜，并(bing)(bing)且不會(hui)同(tong)時(shi)燒壞，因(yin)此可以減少企業(ye)支出。

三，電(dian)(dian)(dian)(dian)(dian)(dian)源線并(bing)(bing)聯。 檢查電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)兩端(duan)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)前端(duan)與(yu)交(jiao)換機觸(chu)(chu)點之間的(de)(de)(de)連接(jie)狀態(tai)。 確保電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)與(yu)交(jiao)換機的(de)(de)(de)連接(jie)正確，因(yin)為(wei)大多數(shu)并(bing)(bing)行使用(yong)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)都在(zai)35mm以上(shang)。每(mei)公(gong)里的(de)(de)(de)導體電(dian)(dian)(dian)(dian)(dian)(dian)阻低于零(ling)歐姆(mu)，并(bing)(bing)且電(dian)(dian)(dian)(dian)(dian)(dian)阻的(de)(de)(de)大小約為(wei)10 -1。 如(ru)果電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)前端(duan)未與(yu)交(jiao)換機接(jie)觸(chu)(chu)，則很容易使交(jiao)換機上(shang)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)(de)(de)某(mou)些相或(huo)某(mou)些相的(de)(de)(de)接(jie)觸(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)阻過大。 結果，兩條電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)(de)(de)載流能力(li)分布(bu)不均。 考慮到經濟(ji)性和電(dian)(dian)(dian)(dian)(dian)(dian)網設計(ji)，當前的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)客戶在(zai)選擇電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)型號時不會留(liu)下太多的(de)(de)(de)載流裕(yu)度。 當電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)鼻端(duan)的(de)(de)(de)接(jie)觸(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)阻太大時，一種是(shi)持(chi)續使用(yong)的(de)(de)(de)地(di)方會加熱并(bing)(bing)燒(shao)毀(hui)，另一種是(shi)導致(zhi)兩根電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)(de)(de)載流量發生變化，從而(er)導致(zhi)其(qi)中(zhong)一根電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan) 過熱和燃(ran)燒(shao)。

還有一(yi)種情況(kuang)值得一(yi)提，即在(zai)(zai)交流(liu)電(dian)(dian)網(wang)中(zhong)并(bing)(bing)聯(lian)使用多芯鎧裝電(dian)(dian)力(li)電(dian)(dian)纜(lan)時，必須(xu)分別取出每根(gen)電(dian)(dian)纜(lan)的(de)A相(xiang)(xiang)，B相(xiang)(xiang)和(he)C相(xiang)(xiang)并(bing)(bing)連(lian)接(jie)到 開關的(de)A，B和(he)C三(san)相(xiang)(xiang)并(bing)(bing)聯(lian)連(lian)接(jie)。 嚴禁(jin)將電(dian)(dian)纜(lan)的(de)所(suo)有芯線短路并(bing)(bing)連(lian)接(jie)到交換機的(de)一(yi)相(xiang)(xiang)。 因為電(dian)(dian)纜(lan)等(deng)效于(yu)在(zai)(zai)帶電(dian)(dian)的(de)單(dan)(dan)相(xiang)(xiang)中(zhong)運行，所(suo)以(yi)單(dan)(dan)相(xiang)(xiang)交流(liu)電(dian)(dian)會在(zai)(zai)鋼帶中(zhong)產生渦(wo)流(liu)，并(bing)(bing)在(zai)(zai)電(dian)(dian)纜(lan)中(zhong)引起熱(re)灼傷(shang)事故。 另外，應充分考慮并(bing)(bing)聯(lian)后的(de)載(zai)流(liu)能力(li)的(de)降低，并(bing)(bing)且(qie)并(bing)(bing)聯(lian)后的(de)載(zai)流(liu)能力(li)不(bu)等(deng)于(yu)實際導體部分的(de)載(zai)流(liu)能力(li)。