金陽光線纜講解電纜的外護層類型是什么

       雖然制造時應(ying)遵循*標(biao)準，但工程實(shi)際曾有三芯電(dian)纜用于交流(liu)單(dan)相情況，因渦流(liu)損耗發熱導(dao)致電(dian)纜溫升過高的事例發生(sheng)。裸鉛包電(dian)纜直埋于潮濕土壤(rang)中出現腐蝕(shi)穿孔(kong)；外套鎧裝雖有一定防腐作(zuo)用，但在(zai)化學腐蝕(shi)環境中時間長了也會出現銹蝕(shi)。

       電(dian)(dian)(dian)纜(lan)擠塑(su)外(wai)套(tao)常用(yong)聚(ju)(ju)(ju)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)PE或聚(ju)(ju)(ju)氯(lv)(lv)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)PVC。聚(ju)(ju)(ju)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)PE不及(ji)聚(ju)(ju)(ju)氯(lv)(lv)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)PVC耐(nai)環境應力(li)開(kai)裂性(xing)能好(hao)，聚(ju)(ju)(ju)氯(lv)(lv)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)在(zai)燃燒(shao)(shao)時(shi)(shi)分解(jie)的(de)氯(lv)(lv)有助于(yu)(yu)阻燃，多采用(yong)聚(ju)(ju)(ju)氯(lv)(lv)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)。 但(dan)-20℃以下低溫用(yong)普(pu)通(tong)聚(ju)(ju)(ju)氯(lv)(lv)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)易(yi)脆化開(kai)裂，而聚(ju)(ju)(ju)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)可耐(nai)-50～-60℃； 對丙(bing)酮、二甲苯、三氯(lv)(lv)甲烷、石油(you)乙(yi)(yi)(yi)醚、雜酚油(you)、氫(qing)氧化鈉(na)等(deng)(deng)化學藥物(wu)的(de)耐(nai)受性(xing)，聚(ju)(ju)(ju)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)優于(yu)(yu)聚(ju)(ju)(ju)氯(lv)(lv)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)；燃燒(shao)(shao)時(shi)(shi)聚(ju)(ju)(ju)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)不像聚(ju)(ju)(ju)氯(lv)(lv)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)析出含有氯(lv)(lv)化氫(qing)等(deng)(deng)毒性(xing)氣(qi)體(ti)，這些(xie)情況就宜采用(yong)聚(ju)(ju)(ju)乙(yi)(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)(xi)作(zuo)擠塑(su)護套(tao)。直(zhi)埋敷設采用(yong)鋼(gang)帶(dai)鎧(kai)裝(zhuang)等(deng)(deng)的(de)條件之一(yi)。由于(yu)(yu)重載車輛(liang)通(tong)過時(shi)(shi)傳遞至電(dian)(dian)(dian)纜(lan)的(de)壓力(li)較大。借鑒日(ri)本(ben)電(dian)(dian)(dian)氣(qi)設備技術(shu)基(ji)準，直(zhi)埋敷設的(de)埋深對載重車經過地段要求(qiu)大于(yu)(yu)－1.2m，只是在(zai)無(wu)重壓情況下埋深可按－0.6m，允許用(yong)無(wu)鋼(gang)帶(dai)鎧(kai)裝(zhuang)電(dian)(dian)(dian)纜(lan)，而對35kV及(ji)以下電(dian)(dian)(dian)纜(lan)的(de)一(yi)般(ban)埋深要求(qiu)為不小于(yu)(yu)－0.7m。直(zhi)埋敷設采用(yong)鋼(gang)鎧(kai)裝(zhuang)也是從防(fang)止(zhi)外(wai)力(li)破壞(huai)考慮的(de)。

      統(tong)計(ji)(ji)顯示直埋敷設(she)的(de)(de)(de)電纜(lan)(lan)事故較(jiao)多，且屬(shu)于機(ji)械(xie)性損(sun)傷的(de)(de)(de)比例相當高。全塑電纜(lan)(lan)受鼠害(hai)而(er)導致故障的(de)(de)(de)情況(kuang)屢見不鮮。統(tong)計(ji)(ji)顯示，外徑10～15mm的(de)(de)(de)電纜(lan)(lan)受害(hai)比例大。日本鐵(tie)道因(yin)鼠害(hai)導致電氣信(xin)號事故，1969～1984年(nian)共發生(sheng)335次，每年(nian)達48～62 次之多。水下電纜(lan)(lan)主(zhu)要在水深、水下較(jiao)長(chang)、水流速較(jiao)大或(huo)有(you)(you)(you)波浪，潮(chao)汐等綜合作用的(de)(de)(de)受力條(tiao)件下，僅靠電纜(lan)(lan)纜(lan)(lan)芯的(de)(de)(de)耐張力往往不足以滿足要求，需有(you)(you)(you)鋼(gang)絲(si)鎧裝(zhuang)且宜預扭或(huo)絞向(xiang)相反(fan)式(shi)構(gou)造。此外，江海等船舶的(de)(de)(de)投錨和海中拖網漁船的(de)(de)(de)漁具(ju)等，可能(neng)有(you)(you)(you)機(ji)械(xie)損(sun)傷危及時，有(you)(you)(you)時也需電纜(lan)(lan)具(ju)有(you)(you)(you)適(shi)當防護特性，還可能(neng)有(you)(you)(you)雙層(ceng)鋼(gang)線(xian)鎧裝(zhuang)、鋼(gang)帶(dai)加(jia)雙層(ceng)鋼(gang)絲(si)鎧裝(zhuang)，或(huo)反(fan)向(xiang)卷繞的(de)(de)(de)雙層(ceng)鋼(gang)絲(si)、短節(jie)距離卷繞的(de)(de)(de)雙層(ceng)鋼(gang)絲(si)，以及鎧裝(zhuang)中含有(you)(you)(you)聚酰胺纖維制的(de)(de)(de)承重線(xian)、碳化(hua)硅聚氯乙烯護層(ceng)等多種構(gou)造型(xing)類，可以因(yin)地制宜選擇(ze)。

      金(jin)陽(yang)光線(xian)(xian)(xian)(xian)(xian)纜(lan)(lan)在生產(chan)各種電線(xian)(xian)(xian)(xian)(xian)電纜(lan)(lan)料(liao)(liao)，護(hu)套(tao)料(liao)(liao)，聚氯料(liao)(liao)，甲級料(liao)(liao)，乙(yi)級料(liao)(liao)，不轉(zhuan)芯料(liao)(liao)，護(hu)套(tao)料(liao)(liao)，阻(zu)(zu)燃料(liao)(liao)，低煙(yan)無(wu)(wu)鹵料(liao)(liao)我才并(bing)進行(xing)拔絲(si)加工，銅(tong)絲(si)、鋁絲(si)各種規格的型號絲(si)。生產(chan)電線(xian)(xian)(xian)(xian)(xian)主要有：塑(su)(su)(su)銅(tong)線(xian)(xian)(xian)(xian)(xian)（固定布電線(xian)(xian)(xian)(xian)(xian)、阻(zu)(zu)燃塑(su)(su)(su)銅(tong)線(xian)(xian)(xian)(xian)(xian)、耐(nai)(nai)(nai)火塑(su)(su)(su)銅(tong)線(xian)(xian)(xian)(xian)(xian)、低煙(yan)無(wu)(wu)鹵塑(su)(su)(su)銅(tong)線(xian)(xian)(xian)(xian)(xian)）BV、ZRBV、NHBV、WDZBN-BV,塑(su)(su)(su)銅(tong)軟(ruan)(ruan)線(xian)(xian)(xian)(xian)(xian)(阻(zu)(zu)燃塑(su)(su)(su)銅(tong)軟(ruan)(ruan)線(xian)(xian)(xian)(xian)(xian)、耐(nai)(nai)(nai)火塑(su)(su)(su)銅(tong)軟(ruan)(ruan)線(xian)(xian)(xian)(xian)(xian))ZRBVR、NHBVR.護(hu)套(tao)線(xian)(xian)(xian)(xian)(xian)（軟(ruan)(ruan)護(hu)套(tao)線(xian)(xian)(xian)(xian)(xian)、硬(ying)護(hu)套(tao)線(xian)(xian)(xian)(xian)(xian)，黑護(hu)套(tao)線(xian)(xian)(xian)(xian)(xian)、白護(hu)套(tao)線(xian)(xian)(xian)(xian)(xian)、阻(zu)(zu)燃護(hu)套(tao)線(xian)(xian)(xian)(xian)(xian)、耐(nai)(nai)(nai)火護(hu)套(tao)線(xian)(xian)(xian)(xian)(xian)、低煙(yan)無(wu)(wu)鹵護(hu)套(tao)線(xian)(xian)(xian)(xian)(xian)）RV、RVV、ZR-RVV、NHRVV、RVVB、BVVB.雙絞線(xian)(xian)(xian)(xian)(xian)(通常用于燈線(xian)(xian)(xian)(xian)(xian)、耐(nai)(nai)(nai)火雙絞線(xian)(xian)(xian)(xian)(xian)、阻(zu)(zu)燃雙絞線(xian)(xian)(xian)(xian)(xian)、屏蔽(bi)雙絞線(xian)(xian)(xian)(xian)(xian))RVS、NHRVS、ZRRVS。屏蔽(bi)線(xian)(xian)(xian)(xian)(xian)（軟(ruan)(ruan)屏蔽(bi)線(xian)(xian)(xian)(xian)(xian)、硬(ying)屏蔽(bi)線(xian)(xian)(xian)(xian)(xian)、控制屏蔽(bi)線(xian)(xian)(xian)(xian)(xian)）RVVP、KVVP.平行(xing)線(xian)(xian)(xian)(xian)(xian)RVB,塑(su)(su)(su)鋁線(xian)(xian)(xian)(xian)(xian)BLV，耐(nai)(nai)(nai)候線(xian)(xian)(xian)(xian)(xian)BVV,地埋線(xian)(xian)(xian)(xian)(xian)等。

     電(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)主要有：交聯電(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)、鎧(kai)(kai)裝(zhuang)(zhuang)交聯電(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)：YJV（銅(tong)芯(xin)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)）、YJV22（鎧(kai)(kai)裝(zhuang)(zhuang)銅(tong)芯(xin)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)）、YJLV（鋁電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)）、YJLV22（鎧(kai)(kai)裝(zhuang)(zhuang)鋁電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)），電(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)：VLV、VLV22、VV、VV22，控(kong)制電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)、鎧(kai)(kai)裝(zhuang)(zhuang)控(kong)制電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)：KVV、KVV22.控(kong)制屏蔽(bi)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)、控(kong)制屏蔽(bi)鎧(kai)(kai)裝(zhuang)(zhuang)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan):KVVP、KVVP22.低(di)煙無(wu)鹵(lu)(lu)電(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)、低(di)煙無(wu)鹵(lu)(lu)阻(zu)燃(ran)耐火電(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)等：WDZ-YJV、WDZBN-YJV、WDZBN-YJV22等。