UL無鹵電線-濟南UL無鹵電線-濟寧UL無鹵電線

UL無鹵電線-濟南UL無鹵電線-濟寧UL無鹵電線。

具(ju)有(you)(you)低煙(yan)無鹵LSHF（Low Smoke Halogen Free）特(te)(te)性(xing)(xing)(xing)的(de)(de)電(dian)纜(lan)于20世紀70年代推(tui)出(chu)，***初用于安(an)裝在(zai)小型密閉空間中，如地鐵、隧道、礦井、船舶和潛艇等(deng)場(chang)合。隨著(zhu)傳統電(dian)纜(lan)在(zai)火(huo)災中產(chan)生煙(yan)霧的(de)(de)毒(du)性(xing)(xing)(xing)和腐蝕(shi)性(xing)(xing)(xing)的(de)(de)風險(xian)越(yue)(yue)來越(yue)(yue)突出(chu)，低煙(yan)無鹵特(te)(te)性(xing)(xing)(xing)電(dian)纜(lan)的(de)(de)使用范(fan)圍擴展到越(yue)(yue)來越(yue)(yue)多的(de)(de)場(chang)所，比如對關(guan)鍵設備和系(xi)統連續運行要求(qiu)較(jiao)高(gao)(gao)的(de)(de)數據(ju)中心、緊(jin)急呼叫(jiao)中心和電(dian)信(xin)交換站；以及學校、醫(yi)院(yuan)和養老院(yuan)等(deng)無法(fa)有(you)(you)效迅速撤離人(ren)員的(de)(de)特(te)(te)殊場(chang)所。雖然(ran)含有(you)(you)鹵化(hua)成分的(de)(de)電(dian)纜(lan)絕緣和護套(tao)具(ju)有(you)(you)的(de)(de)阻燃性(xing)(xing)(xing)，但在(zai)遇火(huo)后(hou)會釋放(fang)具(ju)有(you)(you)毒(du)性(xing)(xing)(xing)和腐蝕(shi)性(xing)(xing)(xing)的(de)(de)煙(yan)氣(qi)。遇火(huo)后(hou)釋放(fang)的(de)(de)鹵素(su)和普遍存(cun)在(zai)的(de)(de)氫(qing)氣(qi)反應，形成鹵化(hua)氫(qing)，遇水后(hou)形成鹽(yan)酸(suan)、或。這些酸(suan)可能會腐蝕(shi)重要結構(gou)、部件和設備，并增(zeng)加(jia)毒(du)性(xing)(xing)(xing)。含鹵的(de)(de)電(dian)纜(lan)在(zai)燃燒(shao)時還會顯著(zhu)提高(gao)(gao)一氧化(hua)碳含量，其潛在(zai)危險(xian)更高(gao)(gao)。

實踐證明，在這些(xie)商業和(he)(he)住宅建筑(zhu)(zhu)中(zhong)使用低(di)煙(yan)無(wu)鹵(lu)(lu)電(dian)纜(lan)(lan)(lan)有(you)助(zhu)于減少設(she)備損壞，降低(di)毒性(xing)煙(yan)氣的(de)釋放，同時成(cheng)為涉及環境和(he)(he)可(ke)(ke)持續因素的(de)綠(lv)色(se)環保新建項目(mu)的(de)合理選擇。在美國(guo)使用低(di)煙(yan)無(wu)鹵(lu)(lu)電(dian)纜(lan)(lan)(lan)可(ke)(ke)能會(hui)滿足美國(guo)綠(lv)色(se)建筑(zhu)(zhu)委員(yuan)會(hui)LEED（Leadership in Energy and Environmental Design）綠(lv)色(se)建筑(zhu)(zhu)倡(chang)議的(de)項目(mu)信貸條(tiao)件。目(mu)前電(dian)纜(lan)(lan)(lan)產(chan)品除使用金屬導體外(wai)，重要組成(cheng)是聚(ju)合物材(cai)料。幾(ji)十年來，電(dian)纜(lan)(lan)(lan)的(de)絕緣(yuan)和(he)(he)護套材(cai)料中(zhong)通(tong)常會(hui)添加(jia)溴(xiu)化(hua)物等鹵(lu)(lu)化(hua)成(cheng)分來改(gai)善阻燃特(te)性(xing)。絕緣(yuan)和(he)(he)護套所使用的(de)聚(ju)氯(lv)乙(yi)烯(xi)（PVC），氟化(hua)乙(yi)烯(xi)丙烯(xi)和(he)(he)氯(lv)化(hua)聚(ju)乙(yi)烯(xi)都含有(you)鹵(lu)(lu)素。其(qi)他(ta)用于電(dian)纜(lan)(lan)(lan)中(zhong)的(de)化(hua)合物也有(you)可(ke)(ke)能含有(you)其(qi)他(ta)鹵(lu)(lu)化(hua)成(cheng)分的(de)樹脂、添加(jia)劑(ji)和(he)(he)色(se)母(mu)。

UL無鹵電線-濟南UL無鹵電線-濟寧UL無鹵電線。

為了(le)促進HF和LSHF電(dian)(dian)纜的(de)持續(xu)開發和采用，UL提供了(le)一(yi)(yi)系列產品(pin)認證(zheng)服務，可以(yi)評估(gu)(gu)電(dian)(dian)線電(dian)(dian)纜產品(pin)的(de)無鹵和低煙(yan)無鹵的(de)特性(xing)(xing)(xing)。這(zhe)一(yi)(yi)自愿性(xing)(xing)(xing)認證(zheng)，對電(dian)(dian)纜材(cai)(cai)料的(de)鹵素特性(xing)(xing)(xing)將按照標(biao)準(zhun)UL 2885“可燃(ran)材(cai)(cai)料燃(ran)燒時(shi)酸性(xing)(xing)(xing)氣體(ti)，酸度和電(dian)(dian)導率調查及(ji)鹵素評估(gu)(gu)”進行(xing)測(ce)試(shi)評估(gu)(gu)。這(zhe)一(yi)(yi)標(biao)準(zhun)主要基于IEC 62821系列標(biao)準(zhun)，通過以(yi)下四個(ge)階段(duan)的(de)測(ce)試(shi)，對電(dian)(dian)纜絕緣、護套，以(yi)及(ji)填(tian)料、膠帶(dai)和包覆物等非金屬(shu)部件進行(xing)評定(ding)：

階段0，鈉(na)熔（依據IEC 62821-1，-2）

階段(duan)1，pH值和電導(dao)率（依(yi)據IEC 60754-2）

階段(duan)2，溴和氯作為HCI（依據IEC 60754-11）

階(jie)段3，含氟(fu)量（依據IEC 62821-1，-2）

將滿足(zu)標準(zhun)UL 2885鹵(lu)素含量要求的電纜(lan)材(cai)料(liao)用于(yu)電線(xian)電纜(lan)中(zhong)(zhong)，再(zai)對其按照IEC 62821-3評估燃(ran)燒時(shi)釋煙密度，同時(shi)滿足(zu)這兩(liang)項，則可以將LSHF（低(di)煙無鹵(lu)）的標志添加于(yu)已獲得UL安全認證的電纜(lan)型號后，比(bi)如(ru)：CMR-LSHF，TC-LSHF，OFNP-LSHF等等，而(er)獲得此類認證的廠(chang)家亦可在UL在線(xian)認證系統(tong)中(zhong)(zhong)被查詢到(dao)。并在未來的生(sheng)產中(zhong)(zhong)按照UL“跟蹤(zong)檢驗服務(wu)”（FUS）對產品進行定期(qi)查驗，持續的監測和測試(shi)，以產品的生(sheng)產持續符合低(di)煙無鹵(lu)的特(te)性要求。

無鹵電子線由電(dian)(dian)(dian)(dian)子(zi)(zi)線(xian)(xian)(xian)延伸而來，符合歐(ou)盟ROHS標(biao)(biao)準下(xia)的(de)環保(bao)要求，通常用于(yu)弱電(dian)(dian)(dian)(dian)工程，如電(dian)(dian)(dian)(dian)子(zi)(zi)電(dian)(dian)(dian)(dian)氣(qi)設(she)(she)備的(de)內部布線(xian)(xian)(xian)等，電(dian)(dian)(dian)(dian)子(zi)(zi)線(xian)(xian)(xian)可(ke)用于(yu)電(dian)(dian)(dian)(dian)氣(qi)設(she)(she)備布線(xian)(xian)(xian)、發光(guang)二極(ji)管(guan)(guan)模(mo)塊線(xian)(xian)(xian)、家用電(dian)(dian)(dian)(dian)器(qi)線(xian)(xian)(xian)、汽(qi)車連(lian)接(jie)線(xian)(xian)(xian)、端子(zi)(zi)連(lian)接(jie)線(xian)(xian)(xian)、機(ji)械(xie)(xie)(xie)內部連(lian)接(jie)線(xian)(xian)(xian)、照明(ming)燈具(ju)線(xian)(xian)(xian)、電(dian)(dian)(dian)(dian)子(zi)(zi)線(xian)(xian)(xian)路(lu)(lu)、變(bian)壓器(qi)線(xian)(xian)(xian)、電(dian)(dian)(dian)(dian)路(lu)(lu)板(ban)連(lian)接(jie)線(xian)(xian)(xian)、發光(guang)二極(ji)管(guan)(guan)燈條線(xian)(xian)(xian)等。機(ji)械(xie)(xie)(xie)損(sun)(sun)傷：無(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)線(xian)(xian)(xian)被(bei)重物損(sun)(sun)壞，被(bei)挖掘機(ji)意(yi)外(wai)損(sun)(sun)壞，敷設(she)(she)時(shi)無(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)線(xian)(xian)(xian)路(lu)(lu)過度彎曲，絕(jue)緣受(shou)損(sun)(sun)，運輸(shu)時(shi)無(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)線(xian)(xian)(xian)路(lu)(lu)嚴重擠壓，絕(jue)緣層和保(bao)護層受(shou)損(sun)(sun)，底(di)層下(xia)沉，直埋電(dian)(dian)(dian)(dian)纜拉得(de)太大等，絕(jue)緣因均(jun)而損(sun)(sun)壞，甚至無(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)線(xian)(xian)(xian)路(lu)(lu)也(ye)可(ke)能斷裂，為(wei)了(le)避(bi)免電(dian)(dian)(dian)(dian)纜的(de)機(ji)械(xie)(xie)(xie)損(sun)(sun)壞，可(ke)以使用架空(kong)無(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)線(xian)(xian)(xian)路(lu)(lu)，無(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)線(xian)(xian)(xian)路(lu)(lu)沿墻敷設(she)(she)時(shi)，應(ying)隱 蔽，地埋應(ying)留(liu)有明(ming)顯(xian)標(biao)(biao)志，禁止(zhi)在無(wu)鹵(lu)電(dian)(dian)(dian)(dian)子(zi)(zi)線(xian)(xian)(xian)路(lu)(lu)周圍取土。

絕緣(yuan)受潮(chao)：由(you)于無(wu)(wu)鹵(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)路(lu)施工工藝(yi)差，濕(shi)氣(qi)侵入電(dian)(dian)(dian)子(zi)線(xian)(xian)路(lu)內部(bu)(bu)，或(huo)無(wu)(wu)鹵(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)路(lu)內保護層(ceng)(ceng)損壞，濕(shi)氣(qi)進入無(wu)(wu)鹵(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)路(lu)；鉛包電(dian)(dian)(dian)纜(lan)敷(fu)設在震源(yuan)周圍，因長期(qi)振(zhen)動而(er)疲勞開裂，無(wu)(wu)鹵(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)路(lu)的外(wai)(wai)皮(pi)被腐蝕并漂浮(fu)，由(you)于制造質量不好，鉛包上有小孔或(huo)裂紋；鑒于這些現(xian)象，應(ying)加(jia)強無(wu)(wu)鹵(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)路(lu)外(wai)(wai)層(ceng)(ceng)的維護，并按期(qi)在外(wai)(wai)保護層(ceng)(ceng)上涂一層(ceng)(ceng)瀝(li)青。過(guo)電(dian)(dian)(dian)壓：無(wu)(wu)鹵(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)路(lu)絕緣(yuan)層(ceng)(ceng)因大氣(qi)過(guo)電(dian)(dian)(dian)壓或(huo)內部(bu)(bu)過(guo)電(dian)(dian)(dian)壓而(er)擊(ji)穿，特(te)別(bie)是系統內部(bu)(bu)過(guo)電(dian)(dian)(dian)壓會導致多(duo)根電(dian)(dian)(dian)纜(lan)同時擊(ji)穿，在這方面，應(ying)安(an)裝(zhuang)避雷(lei)器。

絕(jue)緣(yuan)老化：在(zai)無(wu)鹵(lu)電子線路(lu)(lu)的(de)長期運行過程中(zhong)，由于散熱不(bu)良或(huo)(huo)過載，絕(jue)緣(yuan)材(cai)料的(de)電氣(qi)和機械功能(neng)變差，絕(jue)緣(yuan)層變脆或(huo)(huo)斷裂，如果是這(zhe)種情況，應定期對無(wu)鹵(lu)素電子線路(lu)(lu)進行預防性耐壓測試，在(zai)無(wu)鹵(lu)電子線路(lu)(lu)絕(jue)緣(yuan)降低(di)不(bu)符合安(an)全(quan)運行條件，應更換新電纜(lan)。

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