UL20912-UL20569-UL3613

UL20912-UL20569-UL3613。

如果需要(yao)在(zai)拖鏈中使用電纜(lan)，圓電纜(lan)是(shi)可靠、標準、經濟(ji)的選擇。以圓電纜(lan)為例，說一說在(zai)安裝和固定(ding)拖鏈電纜(lan)時需要(yao)注(zhu)意(yi)的事項(xiang)。

1、從(cong)電纜盤(pan)上(shang)(shang)抽取(qu)拖鏈電纜時，不可扭曲(qu)或打結(jie)，電纜***展開，不能(neng)從(cong)上(shang)(shang)端開始放線，也(ye)不得(de)沿(yan)邊緣拉出。

2、排列電纜時(shi)，***使(shi)其沿長度(du)方(fang)向(xiang)能自由移(yi)動。

3、電(dian)纜***在拖鏈的(de)彎曲部分運(yun)動(dong)自如。

4、不同直徑的電(dian)纜(lan)安裝在(zai)一起時(shi)，無論數量(liang)多少，***使用分(fen)隔片或(huo)支架做適當分(fen)隔，以(yi)免電(dian)纜(lan)之(zhi)間來回竄動(dong)或(huo)相(xiang)互纏繞。

5、不同外護套材料的電纜一起(qi)使用時(shi)，***分隔，以免(mian)相互(hu)粘連。

6、拖鏈(lian)中電(dian)(dian)纜兩端(duan)都***固定，電(dian)(dian)纜的固定點離拖鏈(lian)端(duan)部的距離應為(wei)電(dian)(dian)纜直徑的10-30倍，以減輕(qing)牽引作(zuo)用。

7、發動機中(zhong)的(de)拖鏈(lian)電(dian)纜不(bu)可(ke)接觸到發動機表面

8、拖鏈***小(xiao)的彎曲(qu)半(ban)(ban)徑為電(dian)纜直徑的12倍，更小(xiao)的彎曲(qu)半(ban)(ban)徑可能會縮短電(dian)纜的使(shi)用(yong)壽命。

電(dian)(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)在施(shi)工中，有(you)(you)采(cai)用鋼(gang)支(zhi)架的(de)，有(you)(you)采(cai)用鋼(gang)質保(bao)護管的(de)，有(you)(you)采(cai)用電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)卡與架空敷設的(de)，凡(fan)是在電(dian)(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)周圍(wei)形成鋼(gang)（鐵）性閉(bi)合(he)回路的(de)，均有(you)(you)可(ke)能形成渦流，特別是在大電(dian)(dian)(dian)(dian)(dian)(dian)流電(dian)(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)系統中，渦流更大。在電(dian)(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)施(shi)工時，***采(cai)取措施(shi)，使電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)周圍(wei)不能形成鋼(gang)（鐵）性閉(bi)合(he)回路，防(fang)止(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)引起渦流現象發生(sheng)。

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)轉彎引起的(de)機械性(xing)損(sun)傷(shang)問(wen)題由(you)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)外徑較(jiao)大(da)，運輸、敷(fu)設較(jiao)為(wei)困難，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)對轉彎半(ban)徑的(de)要求(qiu)也比(bi)較(jiao)嚴格。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)在施(shi)工(gong)(gong)中(zhong)，如果轉彎角度過大(da)，可(ke)能使導體(ti)內部(bu)受(shou)(shou)(shou)到(dao)機械損(sun)傷(shang)，而機械損(sun)傷(shang)因被電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)絕緣強度下降，直到(dao)出(chu)現(xian)(xian)故障，施(shi)工(gong)(gong)中(zhong)發(fa)現(xian)(xian)一次電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)頭(tou)(tou)故障，在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)頭(tou)(tou)制(zhi)作時(shi)，三根電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)頭(tou)(tou)長(chang)度一致(zhi)，與設備連接(jie)時(shi)由(you)于(yu)受(shou)(shou)(shou)地(di)形限制(zhi)，中(zhong)相電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)頭(tou)(tou)偏長(chang)而成為(wei)拱形，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)頭(tou)(tou)根部(bu)受(shou)(shou)(shou)損(sun)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。后(hou)采取(qu)措施(shi)，在設備的(de)連接(jie)，適當縮短中(zhong)相電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)頭(tou)(tou)連接(jie)長(chang)度，使三相電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)頭(tou)(tou)均不受(shou)(shou)(shou)外力(li)(li)，實踐證明運行效果良好(hao)。由(you)此(ci)可(ke)見，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)施(shi)工(gong)(gong)過程中(zhong)，要盡可(ke)能減少電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)受(shou)(shou)(shou)到(dao)的(de)扭力(li)(li)，在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)轉彎和(he)裕留電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)時(shi)，讓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)處于(yu)自(zi)然(ran)彎曲，***內部(bu)機械損(sun)傷(shang)現(xian)(xian)象。

電(dian)力(li)纜(lan)(lan)防潮問(wen)(wen)題運(yun)行經驗表(biao)明，中、低壓(ya)(ya)電(dian)力(li)電(dian)纜(lan)(lan)故障(zhang)大(da)部分為電(dian)纜(lan)(lan)中間(jian)接(jie)頭(tou)和終(zhong)端(duan)頭(tou)故障(zhang)，而中間(jian)接(jie)頭(tou)和終(zhong)端(duan)頭(tou)故障(zhang)則(ze)大(da)部分是(shi)因密封(feng)不(bu)良，潮氣侵入而造成絕緣強度下降，而中、低壓(ya)(ya)電(dian)力(li)電(dian)纜(lan)(lan)網(wang)多(duo)采用(yong)樹枝狀供電(dian)方式，電(dian)纜(lan)(lan)終(zhong)端(duan)頭(tou)數量較多(duo)，因此(ci)把好(hao)電(dian)纜(lan)(lan)終(zhong)端(duan)頭(tou)和中間(jian)接(jie)頭(tou)堵漏密封(feng)關是(shi)保(bao)證(zheng)電(dian)纜(lan)(lan)安全可靠(kao)(kao)運(yun)行的重要措施之一。在公用(yong)中、低壓(ya)(ya)電(dian)力(li)電(dian)纜(lan)(lan)網(wang)上，由于(yu)三相負荷不(bu)是(shi)相等的，因此(ci)，如果采用(yong)有金(jin)屬(shu)護(hu)層的電(dian)纜(lan)(lan)，***考慮金(jin)屬(shu)護(hu)層的接(jie)地(di)(di)問(wen)(wen)題，并(bing)(bing)保(bao)證(zheng)在金(jin)屬(shu)護(hu)層的任一點非接(jie)地(di)(di)處的正常感(gan)應(ying)電(dian)壓(ya)(ya)不(bu)得(de)大(da)于(yu)100V。我認為，在中、低壓(ya)(ya)電(dian)纜(lan)(lan)網(wang)中，所有電(dian)纜(lan)(lan)接(jie)頭(tou)處均應(ying)設置接(jie)地(di)(di)極（網(wang)），并(bing)(bing)使金(jin)屬(shu)護(hu)層可靠(kao)(kao)接(jie)地(di)(di)。

ul電子線(xian)對於既薄(bo)又輕(qing)、其構造(zao)緊湊雜(za)亂(luan)的(de)(de)(de)器材(cai)而(er)言(yan)，其規劃解決方案包含從(cong)單面(mian)導(dao)電線(xian)路到雜(za)亂(luan)的(de)(de)(de)多層三維拼(pin)裝。排(pai)線(xian)的(de)(de)(de)總(zong)重量和體(ti)積比傳統的(de)(de)(de)圓導(dao)線(xian)線(xian)束(shu)辦法要削減70%。排(pai)線(xian)還(huan)能(neng)夠通過運用增(zeng)(zeng)強材(cai)料(liao)或(huo)襯(chen)板的(de)(de)(de)辦法增(zeng)(zeng)加其強度，以獲得附加的(de)(de)(de)機(ji)械(xie)穩(wen)定性。可移動、曲(qu)折、扭轉而(er)不會損(sun)壞導(dao)線(xian)，能(neng)夠遵照不一樣(yang)形狀(zhuang)和特別的(de)(de)(de)封(feng)裝尺度。其僅(jin)有的(de)(de)(de)約束(shu)是體(ti)積空間疑(yi)問。由(you)于能(neng)夠接(jie)受(shou)數百(bai)萬次的(de)(de)(de)動態(tai)曲(qu)折，排(pai)線(xian)可***地適(shi)用於接(jie)連運動或(huo)定時運動的(de)(de)(de)內連體(ti)系中，成為(wei)最終商(shang)品(pin)功能(neng)的(de)(de)(de)一部(bu)分。剛性PCB上的(de)(de)(de)焊點受(shou)熱(re)機(ji)械(xie)應(ying)力(li)的(de)(de)(de)效果，在(zai)數百(bai)次的(de)(de)(de)回圈後便(bian)會失效。

ul電(dian)(dian)子(zi)線(xian)具有更高(gao)(gao)的安裝可靠(kao)性和質量。排線(xian)削(xue)減(jian)了內(nei)連所需(xu)的硬體，如傳統(tong)的電(dian)(dian)子(zi)封裝上常用(yong)的焊點(dian)、中(zhong)繼線(xian)、底板線(xian)路及線(xian)纜(lan)，使排線(xian)能夠提(ti)供更高(gao)(gao)的安裝可靠(kao)性和質量。由(you)于雜亂的多個體系所構(gou)成的傳統(tong)內(nei)連硬體在安裝時，易(yi)呈現較高(gao)(gao)的元(yuan)件錯位率(lv)。ul電(dian)(dian)子(zi)線(xian)商(shang)品(pin)契(qi)合(he)***規(gui)范請(qing)求(qiu)(qiu)的電(dian)(dian)線(xian)電(dian)(dian)纜(lan)公司，為了進步(bu)商(shang)品(pin)質量，保證商(shang)品(pin)契(qi)合(he)***規(gui)范請(qing)求(qiu)(qiu)，在原資(zi)料選購、出(chu)(chu)產設備、出(chu)(chu)產工(gong)藝等(deng)方(fang)面嚴格把關。所以，出(chu)(chu)產的電(dian)(dian)線(xian)電(dian)(dian)纜(lan)商(shang)品(pin)外(wai)觀契(qi)合(he)規(gui)范請(qing)求(qiu)(qiu)：潤滑圓整，色澤(ze)均(jun)勻(yun)。

導體有光澤，直流電阻、導體構造尺度等契合***規范請求。契合***規范請求的電線電纜的商品，不論是鋁資料導體，還是銅資料導體都對比亮光、無油污，因此導體的直流電阻完全契合***規范，具有的導電功能，安全性高。

以上是UL20569，UL3613，UL20912，UL電(dian)子線(xian)的相關信(xin)息，歡(huan)迎致電(dian)聯系咨詢