UL1430-南岸UL無鹵電線-黔江UL無鹵電線

UL1430-南岸UL無鹵電線-黔江UL無鹵電線。

具有(you)(you)低(di)煙(yan)(yan)無(wu)(wu)鹵LSHF（Low Smoke Halogen Free）特性(xing)(xing)(xing)的(de)(de)電(dian)(dian)纜于20世紀70年(nian)代(dai)推出，初用(yong)于安裝在(zai)小型密閉空間中，如地(di)鐵、隧(sui)道(dao)、礦井、船(chuan)舶和(he)潛(qian)艇等場(chang)合。隨著傳統(tong)電(dian)(dian)纜在(zai)火(huo)災中產生(sheng)煙(yan)(yan)霧(wu)的(de)(de)毒性(xing)(xing)(xing)和(he)腐蝕性(xing)(xing)(xing)的(de)(de)風險越來越突(tu)出，低(di)煙(yan)(yan)無(wu)(wu)鹵特性(xing)(xing)(xing)電(dian)(dian)纜的(de)(de)使用(yong)范圍擴展到越來越多的(de)(de)場(chang)所，比如對關鍵設(she)(she)備和(he)系統(tong)連續運行要求較高的(de)(de)數據中心、緊急呼叫中心和(he)電(dian)(dian)信交換(huan)站；以及學校、醫院(yuan)和(he)養老(lao)院(yuan)等無(wu)(wu)法有(you)(you)效迅速(su)撤離人員的(de)(de)特殊場(chang)所。雖然含有(you)(you)鹵化成(cheng)(cheng)分的(de)(de)電(dian)(dian)纜絕緣和(he)護套具有(you)(you)的(de)(de)阻燃性(xing)(xing)(xing)，但在(zai)遇火(huo)后會(hui)(hui)釋放具有(you)(you)毒性(xing)(xing)(xing)和(he)腐蝕性(xing)(xing)(xing)的(de)(de)煙(yan)(yan)氣。遇火(huo)后釋放的(de)(de)鹵素和(he)普遍存在(zai)的(de)(de)氫氣反應，形(xing)成(cheng)(cheng)鹵化氫，遇水后形(xing)成(cheng)(cheng)鹽酸、或。這些酸可(ke)能會(hui)(hui)腐蝕重要結構(gou)、部件和(he)設(she)(she)備，并(bing)增加毒性(xing)(xing)(xing)。含鹵的(de)(de)電(dian)(dian)纜在(zai)燃燒時(shi)還會(hui)(hui)顯著提高一氧(yang)化碳含量(liang)，其(qi)潛(qian)在(zai)危險更高。

實踐證(zheng)明，在這些商業(ye)和(he)(he)(he)(he)住宅(zhai)建筑(zhu)中使(shi)(shi)用(yong)低煙無鹵電(dian)(dian)纜(lan)有助于(yu)減少設備(bei)損(sun)壞，降低毒性煙氣(qi)的(de)(de)(de)釋放(fang)，同時(shi)成(cheng)(cheng)為涉及環(huan)境和(he)(he)(he)(he)可(ke)持續(xu)因素的(de)(de)(de)綠(lv)色(se)環(huan)保新建項目(mu)的(de)(de)(de)合理選擇。在美國使(shi)(shi)用(yong)低煙無鹵電(dian)(dian)纜(lan)可(ke)能會(hui)滿足美國綠(lv)色(se)建筑(zhu)委(wei)員會(hui)LEED（Leadership in Energy and Environmental Design）綠(lv)色(se)建筑(zhu)倡議的(de)(de)(de)項目(mu)信貸(dai)條件。目(mu)前電(dian)(dian)纜(lan)產品除使(shi)(shi)用(yong)金屬導(dao)體(ti)外(wai)，重(zhong)要組成(cheng)(cheng)是聚合物材料。幾十年(nian)來，電(dian)(dian)纜(lan)的(de)(de)(de)絕緣和(he)(he)(he)(he)護套材料中通(tong)常會(hui)添(tian)加(jia)溴化(hua)(hua)物等(deng)鹵化(hua)(hua)成(cheng)(cheng)分(fen)來改善阻燃特(te)性。絕緣和(he)(he)(he)(he)護套所使(shi)(shi)用(yong)的(de)(de)(de)聚氯(lv)乙(yi)烯（PVC），氟(fu)化(hua)(hua)乙(yi)烯丙烯和(he)(he)(he)(he)氯(lv)化(hua)(hua)聚乙(yi)烯都含有鹵素。其他用(yong)于(yu)電(dian)(dian)纜(lan)中的(de)(de)(de)化(hua)(hua)合物也有可(ke)能含有其他鹵化(hua)(hua)成(cheng)(cheng)分(fen)的(de)(de)(de)樹(shu)脂(zhi)、添(tian)加(jia)劑和(he)(he)(he)(he)色(se)母。

UL1430-南岸UL無鹵電線-黔江UL無鹵電線。

造成對(dui)于LSHF電(dian)纜混亂理解的重(zhong)要原因是兩個***常用的傳(chuan)統標準：IEC 60754-1“電(dian)纜材料燃燒(shao)時產生(sheng)的氣(qi)體測(ce)(ce)試，：鹵酸(suan)氣(qi)體含(han)量(liang)的測(ce)(ce)定(ding)”IEC 60754-2 “電(dian)纜材質燃燒(shao)產生(sheng)氣(qi)體檢測(ce)(ce)，第2部分:酸(suan)度（通(tong)過(guo)測(ce)(ce)量(liang)pH值）和(he)導電(dian)率的測(ce)(ce)定(ding)”

這(zhe)兩本標準(zhun)(zhun)均未對(dui)鹵素的基本元素，即，氟、氯、溴、碘、砹的含量進(jin)行(xing)測(ce)試(shi)，但是每個標準(zhun)(zhun)都定義了對(dui)由測(ce)試(shi)材(cai)料產生的氫鹵酸(suan)氣(qi)體進(jin)行(xing)測(ce)試(shi)的方法，氫鹵酸(suan)氣(qi)體來自于上述五種鹵族元素。這(zhe)些標準(zhun)(zhun)沒有明確提出(chu)鹵素的百分(fen)比或百分(fen)率水平要(yao)求(qiu)(qiu)。且IEC 60754-2中，pH值和電導率限制被定義為“建議性”要(yao)求(qiu)(qiu)，并非“規范(fan)性”要(yao)求(qiu)(qiu)。

此外，術語“低煙無鹵（LSHF）”包含兩個獨立的產品特性。很多時候，人們火災中遇難的原因大多是被煙霧窒息嗆死。前面講到的是電纜里材料的“無鹵”，也就是說對每一個可燃材料所釋放出的煙霧要求低毒性。另外一個特性“低煙”則需要考量所釋放的煙霧量，這一特性需要在整體電纜上評估。近幾年已有以下一系列***公認的IEC標準明確統一電纜產品和材料中低煙無鹵特性的要求。

無鹵電子線由電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)延伸(shen)而來，符合歐盟ROHS標準下的(de)環保要求(qiu)，通(tong)常用(yong)于(yu)弱(ruo)電(dian)(dian)(dian)(dian)工(gong)程，如(ru)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)氣設備的(de)內部(bu)布(bu)線(xian)(xian)(xian)(xian)(xian)等(deng)，電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)可用(yong)于(yu)電(dian)(dian)(dian)(dian)氣設備布(bu)線(xian)(xian)(xian)(xian)(xian)、發(fa)光二(er)極管模(mo)塊線(xian)(xian)(xian)(xian)(xian)、家用(yong)電(dian)(dian)(dian)(dian)器(qi)線(xian)(xian)(xian)(xian)(xian)、汽車連(lian)接(jie)線(xian)(xian)(xian)(xian)(xian)、端子(zi)(zi)(zi)連(lian)接(jie)線(xian)(xian)(xian)(xian)(xian)、機械內部(bu)連(lian)接(jie)線(xian)(xian)(xian)(xian)(xian)、照明燈具(ju)線(xian)(xian)(xian)(xian)(xian)、電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)路(lu)、變壓器(qi)線(xian)(xian)(xian)(xian)(xian)、電(dian)(dian)(dian)(dian)路(lu)板連(lian)接(jie)線(xian)(xian)(xian)(xian)(xian)、發(fa)光二(er)極管燈條線(xian)(xian)(xian)(xian)(xian)等(deng)。機械損傷(shang)：無(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)被(bei)重(zhong)物(wu)損壞，被(bei)挖掘機意外損壞，敷(fu)設時(shi)無(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)路(lu)過度彎(wan)曲，絕緣受損，運輸(shu)時(shi)無(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)路(lu)嚴重(zhong)擠(ji)壓，絕緣層(ceng)(ceng)和(he)保護層(ceng)(ceng)受損，底(di)層(ceng)(ceng)下沉，直埋電(dian)(dian)(dian)(dian)纜拉得太大等(deng)，絕緣因均而損壞，甚至無(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)路(lu)也可能斷(duan)裂(lie)，為了避免電(dian)(dian)(dian)(dian)纜的(de)機械損壞，可以使用(yong)架空(kong)無(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)路(lu)，無(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)路(lu)沿墻敷(fu)設時(shi)，應隱 蔽，地埋應留有明顯(xian)標志，禁止在(zai)無(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)路(lu)周圍取土。

絕緣(yuan)受潮：由于無(wu)鹵(lu)(lu)(lu)電(dian)(dian)子(zi)(zi)(zi)線(xian)路(lu)(lu)施工(gong)工(gong)藝差，濕(shi)氣侵入(ru)電(dian)(dian)子(zi)(zi)(zi)線(xian)路(lu)(lu)內(nei)部，或(huo)無(wu)鹵(lu)(lu)(lu)電(dian)(dian)子(zi)(zi)(zi)線(xian)路(lu)(lu)內(nei)保(bao)護層損壞，濕(shi)氣進入(ru)無(wu)鹵(lu)(lu)(lu)電(dian)(dian)子(zi)(zi)(zi)線(xian)路(lu)(lu)；鉛包電(dian)(dian)纜敷(fu)設在震源(yuan)周(zhou)圍，因(yin)長期(qi)振動而疲(pi)勞開裂，無(wu)鹵(lu)(lu)(lu)電(dian)(dian)子(zi)(zi)(zi)線(xian)路(lu)(lu)的(de)外皮被腐蝕并漂浮，由于制造質量不好，鉛包上(shang)有小孔或(huo)裂紋(wen)；鑒于這些現(xian)象(xiang)，應加強無(wu)鹵(lu)(lu)(lu)電(dian)(dian)子(zi)(zi)(zi)線(xian)路(lu)(lu)外層的(de)維護，并按期(qi)在外保(bao)護層上(shang)涂一層瀝青。過電(dian)(dian)壓(ya)：無(wu)鹵(lu)(lu)(lu)電(dian)(dian)子(zi)(zi)(zi)線(xian)路(lu)(lu)絕緣(yuan)層因(yin)大氣過電(dian)(dian)壓(ya)或(huo)內(nei)部過電(dian)(dian)壓(ya)而擊(ji)穿，特(te)別是系統內(nei)部過電(dian)(dian)壓(ya)會(hui)導致(zhi)多根電(dian)(dian)纜同時擊(ji)穿，在這方面，應安(an)裝(zhuang)避雷器。

絕緣(yuan)(yuan)老化：在(zai)無鹵電子(zi)(zi)線(xian)路(lu)的長期(qi)運行(xing)過(guo)程中，由(you)于散熱不良或(huo)過(guo)載，絕緣(yuan)(yuan)材料的電氣和機械功能變差，絕緣(yuan)(yuan)層變脆或(huo)斷(duan)裂(lie)，如(ru)果是這種情況，應(ying)定期(qi)對(dui)無鹵素電子(zi)(zi)線(xian)路(lu)進行(xing)預防性耐壓測(ce)試，在(zai)無鹵電子(zi)(zi)線(xian)路(lu)絕緣(yuan)(yuan)降低不符合安(an)全運行(xing)條件，應(ying)更換新(xin)電纜(lan)。

想更深入的了解黔江UL無鹵電線，UL1430，南岸UL無鹵電線，UL電線，請電(dian)(dian)話(hua)來(lai)詢，全天(tian)恭候(hou)您的來(lai)電(dian)(dian)