XLPVC電線-百色UL無鹵電線-北海UL無鹵電線

XLPVC電線-百色UL無鹵電線-北海UL無鹵電線。

具(ju)有低(di)煙(yan)無鹵(lu)LSHF（Low Smoke Halogen Free）特(te)性的(de)電(dian)纜于(yu)20世紀70年(nian)代推出(chu)，***初用于(yu)安裝在小型密閉空間(jian)中，如地鐵、隧道(dao)、礦井、船舶和(he)(he)潛艇(ting)等場(chang)合。隨(sui)著傳統(tong)電(dian)纜在火(huo)災(zai)中產生煙(yan)霧(wu)的(de)毒性和(he)(he)腐蝕(shi)(shi)性的(de)風(feng)險越(yue)來越(yue)突出(chu)，低(di)煙(yan)無鹵(lu)特(te)性電(dian)纜的(de)使用范圍擴展到(dao)越(yue)來越(yue)多的(de)場(chang)所(suo)，比如對關鍵設(she)備和(he)(he)系統(tong)連(lian)續(xu)運(yun)行(xing)要求較高的(de)數(shu)據中心(xin)、緊急呼叫中心(xin)和(he)(he)電(dian)信交換(huan)站；以及(ji)學校、醫院(yuan)和(he)(he)養(yang)老院(yuan)等無法有效迅速撤離(li)人員的(de)特(te)殊場(chang)所(suo)。雖(sui)然(ran)含有鹵(lu)化(hua)(hua)成(cheng)分的(de)電(dian)纜絕緣和(he)(he)護(hu)套具(ju)有的(de)阻燃性，但(dan)在遇火(huo)后會釋放具(ju)有毒性和(he)(he)腐蝕(shi)(shi)性的(de)煙(yan)氣。遇火(huo)后釋放的(de)鹵(lu)素和(he)(he)普遍存在的(de)氫(qing)氣反應，形成(cheng)鹵(lu)化(hua)(hua)氫(qing)，遇水后形成(cheng)鹽酸(suan)、或。這些酸(suan)可能會腐蝕(shi)(shi)重要結構、部(bu)件和(he)(he)設(she)備，并增加毒性。含鹵(lu)的(de)電(dian)纜在燃燒時(shi)還會顯(xian)著提(ti)高一氧化(hua)(hua)碳含量，其潛在危(wei)險更高。

實踐(jian)證明，在這些商業和住宅建(jian)筑中(zhong)使(shi)用(yong)低煙無鹵電(dian)(dian)纜(lan)(lan)(lan)有(you)(you)助于減少設備損(sun)壞(huai)，降(jiang)低毒性煙氣的(de)(de)釋(shi)放(fang)，同時成(cheng)為涉及環境和可持續因(yin)素(su)的(de)(de)綠(lv)(lv)(lv)色(se)(se)環保(bao)新(xin)建(jian)項目(mu)(mu)的(de)(de)合理選擇。在美(mei)(mei)國使(shi)用(yong)低煙無鹵電(dian)(dian)纜(lan)(lan)(lan)可能會滿足美(mei)(mei)國綠(lv)(lv)(lv)色(se)(se)建(jian)筑委員會LEED（Leadership in Energy and Environmental Design）綠(lv)(lv)(lv)色(se)(se)建(jian)筑倡議的(de)(de)項目(mu)(mu)信貸條(tiao)件。目(mu)(mu)前電(dian)(dian)纜(lan)(lan)(lan)產品除使(shi)用(yong)金(jin)屬導體外，重要組成(cheng)是聚(ju)合物(wu)材料(liao)。幾十年來(lai)，電(dian)(dian)纜(lan)(lan)(lan)的(de)(de)絕(jue)緣(yuan)和護套(tao)材料(liao)中(zhong)通常會添加溴化物(wu)等鹵化成(cheng)分來(lai)改善阻(zu)燃特性。絕(jue)緣(yuan)和護套(tao)所使(shi)用(yong)的(de)(de)聚(ju)氯乙(yi)(yi)(yi)烯(xi)（PVC），氟化乙(yi)(yi)(yi)烯(xi)丙烯(xi)和氯化聚(ju)乙(yi)(yi)(yi)烯(xi)都(dou)含有(you)(you)鹵素(su)。其他用(yong)于電(dian)(dian)纜(lan)(lan)(lan)中(zhong)的(de)(de)化合物(wu)也有(you)(you)可能含有(you)(you)其他鹵化成(cheng)分的(de)(de)樹脂、添加劑和色(se)(se)母。

為了(le)促(cu)進(jin)HF和LSHF電(dian)(dian)(dian)(dian)纜的(de)持續(xu)開發和采(cai)用，UL提供了(le)一系列產品認(ren)(ren)證服務，可(ke)以評估(gu)電(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)纜產品的(de)無鹵和低煙無鹵的(de)特性。這一自(zi)愿性認(ren)(ren)證，對電(dian)(dian)(dian)(dian)纜材料(liao)的(de)鹵素特性將按照(zhao)標(biao)準UL 2885“可(ke)燃材料(liao)燃燒時酸性氣體，酸度和電(dian)(dian)(dian)(dian)導率調查及鹵素評估(gu)”進(jin)行(xing)測試評估(gu)。這一標(biao)準主要(yao)基于IEC 62821系列標(biao)準，通(tong)過以下四個階段的(de)測試，對電(dian)(dian)(dian)(dian)纜絕緣、護套，以及填(tian)料(liao)、膠(jiao)帶和包(bao)覆物等非金屬部件進(jin)行(xing)評定：

階段0，鈉熔（依據IEC 62821-1，-2）

階段1，pH值和電導率（依據(ju)IEC 60754-2）

階段(duan)2，溴和氯作為HCI（依據IEC 60754-11）

階段3，含氟量（依據IEC 62821-1，-2）

將滿(man)足標準UL 2885鹵素含量(liang)要求的(de)電(dian)纜(lan)材(cai)料用(yong)于(yu)電(dian)線電(dian)纜(lan)中(zhong)，再對(dui)其(qi)按照IEC 62821-3評(ping)估燃燒時(shi)(shi)釋煙(yan)密(mi)度(du)，同時(shi)(shi)滿(man)足這兩項，則(ze)可(ke)以將LSHF（低(di)煙(yan)無鹵）的(de)標志添加于(yu)已獲(huo)得UL安全(quan)認(ren)證的(de)電(dian)纜(lan)型號后，比如：CMR-LSHF，TC-LSHF，OFNP-LSHF等(deng)等(deng)，而獲(huo)得此類認(ren)證的(de)廠家亦可(ke)在(zai)UL在(zai)線認(ren)證系統中(zhong)被查詢到。并(bing)在(zai)未來的(de)生產中(zhong)按照UL“跟(gen)蹤檢驗服務”（FUS）對(dui)產品進(jin)行定(ding)期查驗，持續的(de)監(jian)測和測試，以產品的(de)生產持續符合低(di)煙(yan)無鹵的(de)特(te)性要求。

XLPVC電線-百色UL無鹵電線-北海UL無鹵電線。

無鹵電子線由電(dian)(dian)(dian)子(zi)(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)(xian)延伸而來，符合歐盟ROHS標(biao)準(zhun)下的(de)環保要求，通常(chang)用(yong)于弱電(dian)(dian)(dian)工程，如電(dian)(dian)(dian)子(zi)(zi)(zi)(zi)電(dian)(dian)(dian)氣設備(bei)的(de)內(nei)部布線(xian)(xian)(xian)(xian)(xian)(xian)等，電(dian)(dian)(dian)子(zi)(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)(xian)可用(yong)于電(dian)(dian)(dian)氣設備(bei)布線(xian)(xian)(xian)(xian)(xian)(xian)、發(fa)光二(er)極管模塊線(xian)(xian)(xian)(xian)(xian)(xian)、家用(yong)電(dian)(dian)(dian)器線(xian)(xian)(xian)(xian)(xian)(xian)、汽車連接線(xian)(xian)(xian)(xian)(xian)(xian)、端子(zi)(zi)(zi)(zi)連接線(xian)(xian)(xian)(xian)(xian)(xian)、機(ji)械(xie)(xie)內(nei)部連接線(xian)(xian)(xian)(xian)(xian)(xian)、照(zhao)明燈(deng)具線(xian)(xian)(xian)(xian)(xian)(xian)、電(dian)(dian)(dian)子(zi)(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)(lu)、變壓(ya)器線(xian)(xian)(xian)(xian)(xian)(xian)、電(dian)(dian)(dian)路(lu)(lu)(lu)板連接線(xian)(xian)(xian)(xian)(xian)(xian)、發(fa)光二(er)極管燈(deng)條(tiao)線(xian)(xian)(xian)(xian)(xian)(xian)等。機(ji)械(xie)(xie)損(sun)(sun)傷：無(wu)(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)(xian)被重物損(sun)(sun)壞，被挖掘機(ji)意外(wai)損(sun)(sun)壞，敷(fu)設時無(wu)(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)(lu)過度(du)彎(wan)曲，絕(jue)緣(yuan)受損(sun)(sun)，運輸時無(wu)(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)(lu)嚴重擠壓(ya)，絕(jue)緣(yuan)層(ceng)和(he)保護層(ceng)受損(sun)(sun)，底層(ceng)下沉，直埋(mai)電(dian)(dian)(dian)纜(lan)拉得太大等，絕(jue)緣(yuan)因均而損(sun)(sun)壞，甚至(zhi)無(wu)(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)(lu)也可能(neng)斷裂，為了避(bi)免電(dian)(dian)(dian)纜(lan)的(de)機(ji)械(xie)(xie)損(sun)(sun)壞，可以使用(yong)架空無(wu)(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)(lu)，無(wu)(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)(lu)沿墻敷(fu)設時，應隱(yin) 蔽，地埋(mai)應留有(you)明顯標(biao)志，禁(jin)止在(zai)無(wu)(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)(zi)(zi)(zi)線(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)(lu)周(zhou)圍取土。

絕緣(yuan)受潮：由于(yu)無(wu)鹵(lu)電(dian)子線(xian)(xian)路(lu)施工工藝(yi)差，濕氣(qi)(qi)侵入電(dian)子線(xian)(xian)路(lu)內(nei)部(bu)，或(huo)無(wu)鹵(lu)電(dian)子線(xian)(xian)路(lu)內(nei)保護(hu)層損壞(huai)，濕氣(qi)(qi)進入無(wu)鹵(lu)電(dian)子線(xian)(xian)路(lu)；鉛包電(dian)纜敷設在(zai)震源周圍，因長期振動(dong)而疲勞開裂(lie)，無(wu)鹵(lu)電(dian)子線(xian)(xian)路(lu)的外(wai)(wai)皮被腐(fu)蝕(shi)并漂浮，由于(yu)制造質(zhi)量不好，鉛包上有(you)小(xiao)孔或(huo)裂(lie)紋；鑒于(yu)這些現象，應(ying)加強無(wu)鹵(lu)電(dian)子線(xian)(xian)路(lu)外(wai)(wai)層的維護(hu)，并按期在(zai)外(wai)(wai)保護(hu)層上涂一層瀝青。過電(dian)壓(ya)(ya)：無(wu)鹵(lu)電(dian)子線(xian)(xian)路(lu)絕緣(yuan)層因大氣(qi)(qi)過電(dian)壓(ya)(ya)或(huo)內(nei)部(bu)過電(dian)壓(ya)(ya)而擊穿，特別是系統內(nei)部(bu)過電(dian)壓(ya)(ya)會導致(zhi)多根電(dian)纜同時(shi)擊穿，在(zai)這方面(mian)，應(ying)安裝避(bi)雷器。

絕(jue)(jue)緣(yuan)老化：在(zai)無鹵(lu)電(dian)(dian)子線路的長期運行(xing)過程中，由(you)于散熱不良或過載(zai)，絕(jue)(jue)緣(yuan)材料的電(dian)(dian)氣和機械功能變差，絕(jue)(jue)緣(yuan)層(ceng)變脆或斷裂(lie)，如果是(shi)這種情況，應定(ding)期對無鹵(lu)素電(dian)(dian)子線路進行(xing)預防性耐壓測試，在(zai)無鹵(lu)電(dian)(dian)子線路絕(jue)(jue)緣(yuan)降低不符合安全運行(xing)條件，應更換(huan)新(xin)電(dian)(dian)纜。

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