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行車(che)控(kong)(kong)制電(dian)纜KVVRC執行標準：企標Q/TX001-2006 本(ben)標準適用于煤礦(kuang)用銅芯聚氯乙烯護套阻燃控(kong)(kong)制電(dian)纜。
MKVV控制電纜(lan)：
| 型(xing)號 | 名稱(cheng) | 規格(ge) | 用途 |
| MKVV | 銅芯聚乙烯(xi)(xi)絕緣(yuan)聚氯(lv)乙烯(xi)(xi)護套阻燃(ran)礦用控制(zhi)電纜 | （2-14)*(4-6) (2-61)*(0.75-2.5) | 鋪設在室內、電纜(lan)內、管(guan)道等固定(ding)場合 |
| MKVV22 | 銅芯聚(ju)(ju)乙烯絕緣聚(ju)(ju)氯乙烯護套鋼帶鍇(kai)裝阻燃煤礦用(yong)控(kong)制電纜 | (7-61)*(0.75-1.5) (4-14)*(4-6) | 鋪設在室內、電纜內、管道、直埋，能承(cheng)受較大(da)機械外(wai)力的(de)固(gu)定(ding)場(chang)合 |
| MKVV32 | 銅芯聚乙烯絕緣聚氯(lv)乙烯護套鋼絲鍇裝阻燃礦用(yong)控制電(dian)纜(lan) | (2-61)*(0.75-2.5) (4-14)*(4-6) | 鋪設在室內、電(dian)纜(lan)內、管道、直(zhi)埋、垂掛，能承(cheng)受(shou)較(jiao)大拉力(li)的固定場合(he) |
| MKVVP22 | 煤礦用銅芯(xin)聚(ju)乙烯(xi)絕(jue)緣聚(ju)氯乙烯(xi)護套編織(zhi)屏蔽鋼帶鍇裝阻燃控制電纜 | (4-14)*(4-6) (4-61)*2.5mm2 | 鋪(pu)設在大磁(ci)場(chang)室內、電纜內、管(guan)道、直埋、垂掛，能承(cheng)受較大拉(la)力的固(gu)定場(chang)合 |
| MKVVRP | 煤礦用銅芯聚乙烯(xi)(xi)絕緣(yuan)聚氯乙烯(xi)(xi)護套編織屏蔽阻燃控制軟(ruan)電纜 | (4-61)*(0.5-2.5) (4-37)*(1.5-2.5) | 鋪(pu)設在(zai)大磁場室內、電纜(lan)內、管道等固定場合 |
MKVV電(dian)纜(lan)(lan)，MKVVP電(dian)纜(lan)(lan)，MKVVP2電(dian)纜(lan)(lan)，MKVV22電(dian)纜(lan)(lan)，MKVV32電(dian)纜(lan)(lan)，MKVVR電(dian)纜(lan)(lan)，MKVVRP電(dian)纜(lan)(lan)，MKVVP22電(dian)纜(lan)(lan)等規格型號(hao)的煤礦用(yong)阻燃控(kong)制電(dian)纜(lan)(lan)，推薦電(dian)纜(lan)(lan)芯數(shu)為2，3，4，5，7，8，10，12，14，16，19，24，27，30，37，44，48，52，61芯
MKVV(2-14)*(4-6)mm2 ，(2-10)*10mm2 (2-61)*(0.75-2.5)mm2 MKVV22(7-61)*(0.75-1.5)mm2 (4-61)*2.5mm2 (4-14)*(4-6)mm2 MKVVP(7-61)*(0.75-1.5)mm2 (4-61)*2.5mm2 (4-14)*(4-6)mm2 MKVVP22(7-61)*(0.75-1.5)mm2 (4-61)*2.5mm2 (4-14)*(4-6)mm2
1、額定電壓450/750v；
2、電(dian)纜導體的長(chang)度(du)允許(xu)工作溫度(du)為70攝氏(shi)度(du)；
3、電纜的敷設溫(wen)度應不低于0攝氏(shi)度，推(tui)薦的允許彎曲半徑；
4、無鎧裝層的電(dian)纜(lan)，應(ying)不小于電(dian)纜(lan)外徑的6倍；
5、有鎧裝或銅帶(dai)屏蔽結構的電(dian)纜，應不小于電(dian)纜外(wai)徑的12倍；
6、有(you)屏蔽結(jie)構(gou)的(de)軟電(dian)(dian)纜(lan)，應(ying)不小于電(dian)(dian)纜(lan)外徑的(de)6倍。
MT386-1995《煤礦用阻燃電纜(lan)阻燃性(xing)的試驗方(fang)法和(he)判定規則》及Q/TX 001-2006 《煤礦用塑(su)料絕緣控制電纜(lan)》
探討多根(gen)單芯電纜并聯使用(yong)后的一些問題
電(dian)(dian)纜(lan)(lan)(lan)實(shi)(shi)際(ji)(ji)(ji)并(bing)(bing)(bing)聯(lian)使用(yong)(yong)(yong)過(guo)(guo)(guo)(guo)程(cheng)中(zhong)(zhong)(zhong)以單(dan)芯(xin)電(dian)(dian)纜(lan)(lan)(lan)并(bing)(bing)(bing)聯(lian)較多，單(dan)芯(xin)電(dian)(dian)纜(lan)(lan)(lan)實(shi)(shi)際(ji)(ji)(ji)并(bing)(bing)(bing)聯(lian)使用(yong)(yong)(yong)過(guo)(guo)(guo)(guo)程(cheng)中(zhong)(zhong)(zhong)可(ke)能(neng)(neng)會(hui)由于(yu)(yu)敷(fu)設(she)方式的(de)(de)(de)影響，其(qi)實(shi)(shi)際(ji)(ji)(ji)的(de)(de)(de)載(zai)流(liu)(liu)量(liang)(liang)(liang)不一(yi)定能(neng)(neng)夠滿足(zu)實(shi)(shi)際(ji)(ji)(ji)負(fu)(fu)荷的(de)(de)(de)需(xu)要(yao)(yao)，實(shi)(shi)際(ji)(ji)(ji)使用(yong)(yong)(yong)中(zhong)(zhong)(zhong)可(ke)能(neng)(neng)會(hui)出(chu)現(xian)過(guo)(guo)(guo)(guo)載(zai)現(xian)象(xiang)。實(shi)(shi)際(ji)(ji)(ji)上(shang)(shang)(shang)，當6根(gen)電(dian)(dian)纜(lan)(lan)(lan)毫(hao)無間(jian)隙的(de)(de)(de)并(bing)(bing)(bing)列碼(ma)(ma)放在(zai)(zai)(zai)空氣中(zhong)(zhong)(zhong)敷(fu)設(she)后其(qi)實(shi)(shi)際(ji)(ji)(ji)再流(liu)(liu)量(liang)(liang)(liang)只能(neng)(neng)達到(dao)(dao)理(li)(li)論載(zai)流(liu)(liu)量(liang)(liang)(liang)的(de)(de)(de)60%左(zuo)右，如果再加上(shang)(shang)(shang)電(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)負(fu)(fu)荷按(an)理(li)(li)論上(shang)(shang)(shang)進行(xing)(xing)選擇，沒有(you)按(an)照實(shi)(shi)際(ji)(ji)(ji)敷(fu)設(she)情況進行(xing)(xing)校(xiao)正。很可(ke)能(neng)(neng)造(zao)(zao)成電(dian)(dian)纜(lan)(lan)(lan)在(zai)(zai)(zai)實(shi)(shi)際(ji)(ji)(ji)通(tong)電(dian)(dian)過(guo)(guo)(guo)(guo)程(cheng)中(zhong)(zhong)(zhong)上(shang)(shang)(shang)處(chu)于(yu)(yu)滿負(fu)(fu)荷運行(xing)(xing)狀態，造(zao)(zao)成電(dian)(dian)纜(lan)(lan)(lan)通(tong)電(dian)(dian)運行(xing)(xing)產生發(fa)熱(re)(re)現(xian)象(xiang)。因此(ci)在(zai)(zai)(zai)電(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)并(bing)(bing)(bing)聯(lian)敷(fu)設(she)過(guo)(guo)(guo)(guo)程(cheng)中(zhong)(zhong)(zhong)其(qi)實(shi)(shi)際(ji)(ji)(ji)載(zai)流(liu)(liu)量(liang)(liang)(liang)不是(shi)簡單(dan)的(de)(de)(de)存在(zai)(zai)(zai)"1+1=2"的(de)(de)(de)關(guan)系，很可(ke)能(neng)(neng)出(chu)現(xian)"1+1=1.5"甚(shen)至出(chu)現(xian)"1+1=1"的(de)(de)(de)現(xian)象(xiang)，造(zao)(zao)成電(dian)(dian)纜(lan)(lan)(lan)實(shi)(shi)際(ji)(ji)(ji)運行(xing)(xing)過(guo)(guo)(guo)(guo)程(cheng)中(zhong)(zhong)(zhong)出(chu)現(xian)嚴重發(fa)熱(re)(re)現(xian)象(xiang)。現(xian)在(zai)(zai)(zai)我們舉(ju)一(yi)個簡單(dan)的(de)(de)(de)例子，比如容量(liang)(liang)(liang)為(wei)570KW，額定電(dian)(dian)流(liu)(liu)為(wei)1140A左(zuo)右的(de)(de)(de)三(san)相異步電(dian)(dian)動機負(fu)(fu)載(zai)，采用(yong)(yong)(yong)兩根(gen)YJV-0.6/1KV-1*300的(de)(de)(de)電(dian)(dian)纜(lan)(lan)(lan)并(bing)(bing)(bing)聯(lian)進行(xing)(xing)供電(dian)(dian)，按(an)理(li)(li)論設(she)計(ji)(ji)計(ji)(ji)算(suan)給定值， YJV-0.6/1KV-1*300單(dan)根(gen)電(dian)(dian)纜(lan)(lan)(lan)在(zai)(zai)(zai)空氣中(zhong)(zhong)(zhong)敷(fu)設(she)起理(li)(li)論計(ji)(ji)算(suan)載(zai)流(liu)(liu)量(liang)(liang)(liang)約(yue)為(wei)750A，兩根(gen)電(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)理(li)(li)論并(bing)(bing)(bing)聯(lian)載(zai)流(liu)(liu)量(liang)(liang)(liang)可(ke)達1500A左(zuo)右，*可(ke)以滿足(zu)設(she)備的(de)(de)(de)實(shi)(shi)際(ji)(ji)(ji)使用(yong)(yong)(yong)需(xu)要(yao)(yao)。我們現(xian)在(zai)(zai)(zai)假(jia)設(she)有(you)32根(gen)電(dian)(dian)纜(lan)(lan)(lan)全部集中(zhong)(zhong)(zhong)在(zai)(zai)(zai)一(yi)個在(zai)(zai)(zai)橋(qiao)架上(shang)(shang)(shang)并(bing)(bing)(bing)排堆積隨(sui)意碼(ma)(ma)放敷(fu)設(she)，而上(shang)(shang)(shang)述并(bing)(bing)(bing)聯(lian)供電(dian)(dian)的(de)(de)(de)兩根(gen)YJV-0.6/1KV-1*300也位于(yu)(yu)其(qi)中(zhong)(zhong)(zhong) 。查閱相關(guan)材(cai)料發(fa)現(xian)，當電(dian)(dian)纜(lan)(lan)(lan)在(zai)(zai)(zai)空氣中(zhong)(zhong)(zhong)6根(gen)毫(hao)無間(jian)隙堆積碼(ma)(ma)放后電(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)實(shi)(shi)際(ji)(ji)(ji)載(zai)流(liu)(liu)量(liang)(liang)(liang)將(jiang)下降到(dao)(dao)理(li)(li)論計(ji)(ji)算(suan)給定值的(de)(de)(de)60%。那么原來的(de)(de)(de)電(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)實(shi)(shi)際(ji)(ji)(ji)載(zai)流(liu)(liu)量(liang)(liang)(liang)為(wei)1500×60%=900A，每根(gen)電(dian)(dian)纜(lan)(lan)(lan)分配到(dao)(dao)的(de)(de)(de)實(shi)(shi)際(ji)(ji)(ji)載(zai)流(liu)(liu)量(liang)(liang)(liang)為(wei)450A左(zuo)右， 與(yu)理(li)(li)論計(ji)(ji)算(suan)載(zai)流(liu)(liu)量(liang)(liang)(liang)750A相差近300A，這樣電(dian)(dian)纜(lan)(lan)(lan)在(zai)(zai)(zai)實(shi)(shi)際(ji)(ji)(ji)使用(yong)(yong)(yong)過(guo)(guo)(guo)(guo)程(cheng)就(jiu)存在(zai)(zai)(zai)嚴重過(guo)(guo)(guo)(guo)載(zai)發(fa)熱(re)(re)現(xian)象(xiang)。
而(er)(er)且(qie)實(shi)(shi)際(ji)敷(fu)設(she)(she)(she)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)根(gen)(gen)(gen)數又遠遠多于(yu)6根(gen)(gen)(gen)，那(nei)么實(shi)(shi)際(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)再(zai)流(liu)(liu)(liu)量(liang)可能(neng)可能(neng)比(bi)900A還要(yao)小。如何解(jie)決這(zhe)個(ge)問(wen)題(ti)，有些人(ren)提出再(zai)并聯一根(gen)(gen)(gen)YJV-0.6/1KV-1*120電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)以減少其余(yu)兩(liang)根(gen)(gen)(gen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)分配(pei)(pei)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，現在(zai)(zai)(zai)我(wo)們(men)(men)從(cong)理論上(shang)(shang)先假(jia)設(she)(she)(she)計算(suan)一下，三(san)根(gen)(gen)(gen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)并聯后，負荷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)實(shi)(shi)際(ji)分配(pei)(pei)情況(kuang)，假(jia)設(she)(she)(she)3根(gen)(gen)(gen)并聯使用(yong)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)長度都為1公里，敷(fu)設(she)(she)(she)溫度全(quan)部(bu)(bu)按20℃計算(suan)。而(er)(er)且(qie)假(jia)定(ding)并聯的(de)(de)(de)(de)1公里兩(liang)根(gen)(gen)(gen)YJV-0.6/1KV-1*300電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)導體電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)**。實(shi)(shi)際(ji)上(shang)(shang)由于(yu)制造工(gong)(gong)藝上(shang)(shang)的(de)(de)(de)(de)問(wen)題(ti)不可能(neng)達(da)到(dao)*的(de)(de)(de)(de)*，導體電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)還是(shi)(shi)有微小的(de)(de)(de)(de)差別。在(zai)(zai)(zai)實(shi)(shi)際(ji)計算(suan)過(guo)程我(wo)們(men)(men)忽略上(shang)(shang)述影(ying)響。20℃銅導體zuì大(da)直流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)銅芯300mm2為0.0601Ω/km，120 mm2為0.153Ω/km， 1140A的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)實(shi)(shi)際(ji)分配(pei)(pei)計算(suan)120 mm2截(jie)(jie)(jie)(jie)面(mian)(mian)分配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)為(0.0601*0.0601/0.153*0.0601+0.153*0.0601+0.0601*0.0601)=187A，剩余(yu)300 mm2截(jie)(jie)(jie)(jie)面(mian)(mian)的(de)(de)(de)(de)上(shang)(shang)分配(pei)(pei)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)為953A，而(er)(er)每一根(gen)(gen)(gen)300 mm2的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)上(shang)(shang)實(shi)(shi)際(ji)流(liu)(liu)(liu)過(guo)的(de)(de)(de)(de)負荷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)為477A左(zuo)右，這(zhe)樣的(de)(de)(de)(de)情況(kuang)下電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)實(shi)(shi)際(ji)通電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)依(yi)然(ran)存在(zai)(zai)(zai)過(guo)載現象。而(er)(er)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)120的(de)(de)(de)(de)實(shi)(shi)際(ji)災流(liu)(liu)(liu)量(liang)在(zai)(zai)(zai)這(zhe)種情況(kuang)下的(de)(de)(de)(de)載流(liu)(liu)(liu)量(liang)為435*60%=261A，仍然(ran)有很大(da)的(de)(de)(de)(de)余(yu)量(liang)但電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)分配(pei)(pei)規(gui)(gui)律(lv)(lv)卻不會(hui)將(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)分配(pei)(pei)到(dao)120截(jie)(jie)(jie)(jie)面(mian)(mian)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)上(shang)(shang)去，實(shi)(shi)際(ji)上(shang)(shang)原來的(de)(de)(de)(de)問(wen)題(ti)依(yi)然(ran)沒有得(de)到(dao)解(jie)決。而(er)(er)且(qie)我(wo)們(men)(men)的(de)(de)(de)(de)假(jia)設(she)(she)(she)只(zhi)有電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)為6根(gen)(gen)(gen)的(de)(de)(de)(de)情況(kuang)，也(ye)不符合我(wo)們(men)(men)的(de)(de)(de)(de)既定(ding)的(de)(de)(de)(de)要(yao)求。設(she)(she)(she)想再(zai)加(jia)一根(gen)(gen)(gen)300 mm2截(jie)(jie)(jie)(jie)面(mian)(mian)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)，其實(shi)(shi)際(ji)載流(liu)(liu)(liu)量(liang)的(de)(de)(de)(de)分配(pei)(pei)規(gui)(gui)律(lv)(lv)為1140*1/3=380A，因(yin)此在(zai)(zai)(zai)實(shi)(shi)際(ji)的(de)(de)(de)(de)并聯電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)過(guo)程中要(yao)對所家電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)截(jie)(jie)(jie)(jie)面(mian)(mian)必須進行計算(suan)嚴(yan)正后，才能(neng)進行并聯使用(yong)，否則及時加(jia)了電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)可能(neng)也(ye)不能(neng)解(jie)決問(wen)題(ti)，zuì好的(de)(de)(de)(de)情況(kuang)是(shi)(shi)采用(yong)加(jia)相同規(gui)(gui)格的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)，而(er)(er)且(qie)保(bao)證(zheng)(zheng)長度相同，這(zhe)樣保(bao)證(zheng)(zheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)分配(pei)(pei)基本(ben)均勻。實(shi)(shi)際(ji)上(shang)(shang)在(zai)(zai)(zai)現場安(an)裝全(quan)部(bu)(bu)完成以后再(zai)進行一次現場電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)重新安(an)裝和返工(gong)(gong)，在(zai)(zai)(zai)一般情況(kuang)下是(shi)(shi)很難實(shi)(shi)現的(de)(de)(de)(de)。因(yin)此電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)先期的(de)(de)(de)(de)正規(gui)(gui)設(she)(she)(she)計和敷(fu)設(she)(she)(she)安(an)裝工(gong)(gong)作至關重要(yao)，后期所采取的(de)(de)(de)(de)方式往(wang)往(wang)只(zhi)是(shi)(shi)一種補救措施(shi)，很難從(cong)根(gen)(gen)(gen)本(ben)上(shang)(shang) 解(jie)決問(wen)題(ti)。
而且在(zai)(zai)多(duo)芯(xin)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)(de)并(bing)(bing)(bing)聯(lian)(lian)(lian)使用(yong)(yong)(yong)過程中(zhong)也(ye)存在(zai)(zai)一(yi)些(xie)問題(ti)，鎧狀(zhuang)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)并(bing)(bing)(bing)聯(lian)(lian)(lian)要將每(mei)根(gen)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)(de)的(de)(de)(de)(de)(de)主(zhu)線(xian)芯(xin)A，B，C三相(xiang)錯開對(dui)應并(bing)(bing)(bing)聯(lian)(lian)(lian)使用(yong)(yong)(yong)，不(bu)(bu)能(neng)將鎧狀(zhuang)多(duo)芯(xin)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)(de)所有(you)線(xian)新并(bing)(bing)(bing)接(jie)在(zai)(zai)一(yi)相(xiang)上(shang)當單(dan)芯(xin)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)使用(yong)(yong)(yong)，如(ru)果這(zhe)樣做(zuo)(zuo)，會(hui)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)(de)鎧狀(zhuang)鋼帶中(zhong)產(chan)生(sheng)渦(wo)流(liu)(liu)效(xiao)應，造成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)(de)發(fa)熱，產(chan)生(sheng)熱擊穿故障。這(zhe)雖然是一(yi)個很簡單(dan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)學原理，但在(zai)(zai)筆者多(duo)次走訪用(yong)(yong)(yong)戶的(de)(de)(de)(de)(de)過程中(zhong)有(you)時還是有(you)用(yong)(yong)(yong)戶提出(chu)類似的(de)(de)(de)(de)(de)問題(ti)和(he)做(zuo)(zuo)法(fa)。在(zai)(zai)三相(xiang)四線(xian)制不(bu)(bu)平衡(heng)照明負(fu)載(zai)中(zhong)，我們負(fu)載(zai)的(de)(de)(de)(de)(de)接(jie)線(xian)和(he)分(fen)配方式要盡(jin)可(ke)能(neng)保證(zheng)(zheng)負(fu)載(zai)的(de)(de)(de)(de)(de)分(fen)配均勻(yun)，盡(jin)可(ke)能(neng)保證(zheng)(zheng)三相(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)平衡(heng)，否(fou)則可(ke)能(neng)會(hui)由(you)于三相(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)(de)嚴重(zhong)不(bu)(bu)平衡(heng)造成(cheng)(cheng)在(zai)(zai)鎧狀(zhuang)鋼帶中(zhong)產(chan)生(sheng)交變感(gan)應電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，造成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)(de)發(fa)熱。行車控制電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)KVVRC的(de)(de)(de)(de)(de)并(bing)(bing)(bing)聯(lian)(lian)(lian)使用(yong)(yong)(yong)對(dui)于各線(xian)路(lu)端部接(jie)線(xian)鼻(bi)子的(de)(de)(de)(de)(de)松緊程度也(ye)要引(yin)起注意，因為使用(yong)(yong)(yong)并(bing)(bing)(bing)聯(lian)(lian)(lian)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)(de)負(fu)載(zai)的(de)(de)(de)(de)(de)容(rong)量一(yi)般都比(bi)較大，其每(mei)公里的(de)(de)(de)(de)(de)導(dao)體(ti)電(dian)(dian)(dian)(dian)(dian)(dian)阻都在(zai)(zai)0以下(xia)，如(ru)果在(zai)(zai)線(xian)路(lu)的(de)(de)(de)(de)(de)任何一(yi)端一(yi)旦(dan)出(chu)現(xian)線(xian)鼻(bi)子松動和(he)接(jie)觸不(bu)(bu)良現(xian)象，都會(hui)成(cheng)(cheng)倍增加線(xian)路(lu)的(de)(de)(de)(de)(de)導(dao)體(ti)電(dian)(dian)(dian)(dian)(dian)(dian)阻，造成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)分(fen)配不(bu)(bu)均甚至旁路(lu)現(xian)象，這(zhe)樣就會(hui)造成(cheng)(cheng)并(bing)(bing)(bing)聯(lian)(lian)(lian)的(de)(de)(de)(de)(de)個別電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)產(chan)生(sheng)發(fa)熱現(xian)象，引(yin)發(fa)故障。
同時可(ke)能(neng)電(dian)(dian)纜的(de)(de)實際(ji)(ji)線路的(de)(de)導體電(dian)(dian)阻并不可(ke)能(neng)**，因(yin)此(ci)相同型號規(gui)格的(de)(de)電(dian)(dian)纜在對電(dian)(dian)流(liu)的(de)(de)分配也不可(ke)能(neng)是平均分配，可(ke)能(neng)在電(dian)(dian)流(liu)的(de)(de)實際(ji)(ji)分配過程中可(ke)能(neng)還存在一定的(de)(de)差異。
因此在多根單芯電纜(lan)的實際(ji)并聯使用過(guo)程中要根據(ju)其實際(ji)敷設情況進行(xing)校正，否(fou)則(ze)可能造成電纜(lan)并聯使用過(guo)程產生發(fa)熱(re)現象(xiang)，影響電纜(lan)的正常使用。
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