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電纜(lan)如(ru)(ru)果要(yao)(yao)長期(qi)存放(fang),根據電纜(lan)的(de)(de)放(fang)置位置,應(ying)作(zuo)以下考慮:1、屋檐(yan)下。電纜(lan)只在(zai)不直(zhi)接暴露在(zai)陽光(guang)照(zhao)射(she)或超高溫下,標準局域網電纜(lan)就可以應(ying)用(yong),建議使(shi)用(yong)管(guan)(guan)道(dao)(dao)。2、外(wai)墻(qiang)上(shang)。避(bi)免(mian)陽光(guang)直(zhi)接照(zhao)射(she)墻(qiang)面及人為(wei)損(sun)(sun)壞。3、管(guan)(guan)道(dao)(dao)里(li)(塑料(liao)或金屬的(de)(de))。如(ru)(ru)在(zai)管(guan)(guan)道(dao)(dao)里(li),注(zhu)意塑料(liao)管(guan)(guan)道(dao)(dao)的(de)(de)損(sun)(sun)壞及金屬管(guan)(guan)道(dao)(dao)的(de)(de)導熱。4、懸空應(ying)用(yong)/架空電纜(lan)。考慮電纜(lan)的(de)(de)下垂(chui)和壓(ya)力(li),打算(suan)采(cai)用(yong)哪種(zhong)捆綁(bang)方(fang)式,電纜(lan)是否被陽光(guang)直(zhi)接照(zhao)射(she)。5、直(zhi)接在(zai)地(di)下電纜(lan)溝(gou)中鋪設(she),pvc電線電纜(lan),這(zhe)(zhe)種(zhong)環境(jing)是控制范圍1小(xiao)的(de)(de)。電纜(lan)溝(gou)的(de)(de)安裝要(yao)(yao)定(ding)期(qi)進行(xing)干燥或潮濕(shi)程度(du)的(de)(de)檢查。6、地(di)下管(guan)(guan)道(dao)(dao)。為(wei)便于今后的(de)(de)升級(ji),電纜(lan)更換以及與表(biao)面壓(ya)力(li)和周圍環境(jing)隔離(li)(li),輔設(she)管(guan)(guan)道(dao)(dao)相隔離(li)(li),輔設(she)管(guan)(guan)道(dao)(dao)是一個較好的(de)(de)方(fang)法。但(dan)不要(yao)(yao)寄希望(wang)于管(guan)(guan)道(dao)(dao)會永遠保持干燥,這(zhe)(zhe)將影響(xiang)對電纜(lan)種(zhong)類的(de)(de)選擇(ze)。
施(shi)工(gong)人員在制(zhi)作電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)接(jie)(jie)(jie)頭(tou)(tou)過程中,如(ru)果有接(jie)(jie)(jie)頭(tou)(tou)壓接(jie)(jie)(jie)不緊、加熱不充(chong)分等原網,都(dou)會導致(zhi)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)頭(tou)(tou)絕(jue)緣降(jiang)低(di),從而(er)引發(fa)事故(gu)。4、絕(jue)緣受潮。這種(zhong)情況也很常(chang)見,一般(ban)發(fa)生在直(zhi)埋或排管里(li)的(de)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)接(jie)(jie)(jie)頭(tou)(tou)處。比如(ru):電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)接(jie)(jie)(jie)頭(tou)(tou)制(zhi)作不合格和(he)在潮濕的(de)氣候條(tiao)件(jian)下(xia)做(zuo)接(jie)(jie)(jie)頭(tou)(tou),會使(shi)接(jie)(jie)(jie)頭(tou)(tou)進水(shui)或混入水(shui)蒸氣,時間久了在電(dian)(dian)(dian)場作用下(xia)形(xing)成(cheng)(cheng)水(shui)樹枝,逐漸損害電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)絕(jue)緣強度而(er)造(zao)成(cheng)(cheng)故(gu)障(zhang)(zhang)。5、環境(jing)和(he)溫度。電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)所處的(de)外界環境(jing)和(he)溫度會造(zao)成(cheng)(cheng)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)溫度過高(gao)、絕(jue)緣擊穿,甚至爆1炸(zha)起火。6、化學(xue)(xue)腐蝕(shi)。電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)直(zhi)接(jie)(jie)(jie)埋在有酸堿作用的(de)地區,往(wang)往(wang)會造(zao)成(cheng)(cheng)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)鎧裝(zhuang)、鉛皮或外護層(ceng)(ceng)被腐蝕(shi),保護層(ceng)(ceng)因長期(qi)遭(zao)受化學(xue)(xue)腐蝕(shi)或電(dian)(dian)(dian)解腐蝕(shi),電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)電(dian)(dian)(dian)線(xian)報價,致(zhi)使(shi)保護層(ceng)(ceng)失效,絕(jue)緣降(jiang)低(di),也會導致(zhi)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)故(gu)障(zhang)(zhang)。
遇到電(dian)(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)進(jin)水(shui)(shui)你是怎(zen)么(me)解決的(de)(de)?一、電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)里面(mian)有水(shui)(shui)的(de)(de)危害(hai)。一般(ban)而言,電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)進(jin)水(shui)(shui)后,在電(dian)(dian)(dian)(dian)(dian)磁場的(de)(de)作用(yong)下會發生(sheng)“水(shui)(shui)樹老化”現象,電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)損(sun)壞只會是時間問題(ti),終會導(dao)致(zhi)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)擊(ji)穿(chuan)。二(er)、電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)里面(mian)有水(shui)(shui)的(de)(de)原(yuan)因(yin)。1,電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)敷設保存時,兩端電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)頭(tou)并沒有進(jin)行密(mi)封(feng)(feng)處理或(huo)者密(mi)封(feng)(feng)性不好(hao)(hao),水(shui)(shui)汽滲(shen)(shen)入(ru)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)內部。2,安徽電(dian)(dian)(dian)(dian)(dian)線,電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)敷設過程(cheng)中(zhong)(zhong),電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)頭(tou)密(mi)封(feng)(feng)不好(hao)(hao)且(qie)浸泡在水(shui)(shui)中(zhong)(zhong),或(huo)者在穿(chuan)管敷設時,電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)外絕緣皮(pi),水(shui)(shui)滲(shen)(shen)入(ru)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)。3,什么(me)牌子的(de)(de)電(dian)(dian)(dian)(dian)(dian)線好(hao)(hao),電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)敷設完成后,兩端的(de)(de)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)頭(tou)沒有及時制作,長期(qi)暴露在空(kong)氣中(zhong)(zhong)或(huo)者潮濕(shi)環境(jing)中(zhong)(zhong)。4,電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)供(gong)電(dian)(dian)(dian)(dian)(dian)運行過程(cheng)中(zhong)(zhong)發生(sheng)過局部電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)擊(ji)穿(chuan),水(shui)(shui)滲(shen)(shen)入(ru)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)。
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