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138-9810-2027

穆棱線纜需要做哪些檢測?

來源:行業動態 閱讀:115389 發布時間:2019-07-05

1.電性能檢測

主要(yao)有(you)導(dao)(dao)體(ti)直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)阻、絕緣電(dian)(dian)(dian)(dian)(dian)阻、成品電(dian)(dian)(dian)(dian)(dian)壓(ya)試驗及(ji)絕緣線(xian)芯間電(dian)(dian)(dian)(dian)(dian)壓(ya)試驗,每項都很重要(yao),導(dao)(dao)體(ti)電(dian)(dian)(dian)(dian)(dian)阻直(zhi)接反映了(le)電(dian)(dian)(dian)(dian)(dian)纜的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)傳輸性能,直(zhi)接影(ying)響電(dian)(dian)(dian)(dian)(dian)纜在通電(dian)(dian)(dian)(dian)(dian)運行中的(de)(de)(de)溫(wen)度、壽命、電(dian)(dian)(dian)(dian)(dian)壓(ya)降、以及(ji)運行安(an)全,它主要(yao)考查導(dao)(dao)體(ti)的(de)(de)(de)材質和截(jie)(jie)面積,若導(dao)(dao)體(ti)的(de)(de)(de)材質不好(hao)或截(jie)(jie)面積嚴(yan)(yan)重不足,就(jiu)會造成導(dao)(dao)體(ti)直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)阻嚴(yan)(yan)重超標,這種電(dian)(dian)(dian)(dian)(dian)纜鋪設在線(xian)路(lu)中就(jiu)會增加電(dian)(dian)(dian)(dian)(dian)流(liu)在線(xian)路(lu)上通過時(shi)的(de)(de)(de)損耗(hao),引起電(dian)(dian)(dian)(dian)(dian)纜導(dao)(dao)體(ti)本身發(fa)熱(re),引起包覆導(dao)(dao)體(ti)的(de)(de)(de)絕緣老化開裂(lie),造成供電(dian)(dian)(dian)(dian)(dian)線(xian)路(lu)漏電(dian)(dian)(dian)(dian)(dian)、短路(lu),甚至(zhi)造成火災(zai),危及(ji)人身、財(cai)產的(de)(de)(de)安(an)全。標準對不同規(gui)格(ge)電(dian)(dian)(dian)(dian)(dian)纜的(de)(de)(de)導(dao)(dao)體(ti)直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)阻值均有(you)嚴(yan)(yan)格(ge)的(de)(de)(de)規(gui)定(ding),不得(de)大于標準規(gui)定(ding)的(de)(de)(de)值。

絕(jue)緣(yuan)(yuan)電(dian)(dian)(dian)阻、成品電(dian)(dian)(dian)壓(ya)(ya)(ya)試驗(yan)及(ji)絕(jue)緣(yuan)(yuan)線芯(xin)間(jian)電(dian)(dian)(dian)壓(ya)(ya)(ya)試驗(yan),均考查(cha)的(de)(de)是(shi)電(dian)(dian)(dian)纜(lan)絕(jue)緣(yuan)(yuan)層和護套層的(de)(de)電(dian)(dian)(dian)氣(qi)絕(jue)緣(yuan)(yuan)性能,絕(jue)緣(yuan)(yuan)電(dian)(dian)(dian)阻是(shi)檢測兩個導(dao)體之間(jian)絕(jue)緣(yuan)(yuan)材(cai)料的(de)(de)電(dian)(dian)(dian)阻,它應足夠大以起到絕(jue)緣(yuan)(yuan)保護作用。成品電(dian)(dian)(dian)壓(ya)(ya)(ya)試驗(yan)及(ji)絕(jue)緣(yuan)(yuan)線芯(xin)間(jian)電(dian)(dian)(dian)壓(ya)(ya)(ya)試驗(yan)不(bu)光要(yao)求電(dian)(dian)(dian)纜(lan)有(you)足夠的(de)(de)絕(jue)緣(yuan)(yuan)能力(li),還要(yao)求絕(jue)緣(yuan)(yuan)或護套材(cai)料均勻(yun)(yun)無雜質、厚度足夠均勻(yun)(yun),表面不(bu)能有(you)看不(bu)見(jian)的(de)(de)沙(sha)眼、針孔等,否(fou)則就(jiu)會(hui)造成耐壓(ya)(ya)(ya)試驗(yan)時局部擊穿。

2.機械性能檢測

主要(yao)是考查絕緣(yuan)和護套(tao)(tao)塑(su)料材(cai)料的(de)抗張(zhang)強度、斷(duan)裂(lie)伸(shen)長(chang)(chang)率,包括老化(hua)前(qian)后,還有對于成品軟電纜(lan)進行的(de)曲(qu)(qu)撓試(shi)驗、彎曲(qu)(qu)試(shi)驗、荷(he)重斷(duan)芯試(shi)驗、絕緣(yuan)線芯撕裂(lie)試(shi)驗、靜態曲(qu)(qu)撓試(shi)驗等。老化(hua)前(qian)、后抗張(zhang)強度、老化(hua)前(qian)后斷(duan)裂(lie)伸(shen)長(chang)(chang)率是電纜(lan)絕緣(yuan)和護套(tao)(tao)材(cai)料最(zui)重要(yao)最(zui)基本的(de)指標(biao),要(yao)求用作電纜(lan)絕緣(yuan)和護套(tao)(tao)的(de)材(cai)料,既(ji)要(yao)有足夠(gou)的(de)拉伸(shen)強度不(bu)容易拉斷(duan),又(you)要(yao)有一定的(de)柔韌性。

老(lao)化是指在高溫條(tiao)件(jian)下(xia),絕(jue)緣(yuan)(yuan)(yuan)和(he)護套材(cai)料保持其(qi)原有性能(neng)的能(neng)力,老(lao)化不應嚴重影(ying)響(xiang)材(cai)料的抗(kang)張強度(du)和(he)伸長率(lv),這些都將直接影(ying)響(xiang)電(dian)纜的使(shi)用壽命,若(ruo)抗(kang)張強度(du)和(he)斷(duan)裂(lie)伸長率(lv)不合格,進(jin)行(xing)電(dian)纜的施工(gong)安(an)裝時就(jiu)極易(yi)(yi)出現護套或(huo)絕(jue)緣(yuan)(yuan)(yuan)體斷(duan)裂(lie),或(huo)在光、熱環境下(xia)使(shi)用的電(dian)纜其(qi)護套和(he)絕(jue)緣(yuan)(yuan)(yuan)容(rong)易(yi)(yi)變脆,斷(duan)裂(lie),致使(shi)帶電(dian)導(dao)體裸露,發生觸電(dian)危險。

另(ling)外(wai)軟(ruan)電(dian)(dian)(dian)纜(lan)(lan)(lan)由于不是固定敷設,使用中(zhong)存在反復拖拉、彎(wan)(wan)曲(qu)等(deng)情況,所以(yi)對于軟(ruan)電(dian)(dian)(dian)纜(lan)(lan)(lan)標(biao)準又另(ling)外(wai)規定了在其成品電(dian)(dian)(dian)纜(lan)(lan)(lan)上加做動(dong)態(tai)(tai)曲(qu)撓試(shi)驗(yan)、彎(wan)(wan)曲(qu)試(shi)驗(yan)、荷重斷(duan)芯(xin)試(shi)驗(yan)、絕(jue)緣(yuan)(yuan)線芯(xin)撕裂(lie)試(shi)驗(yan)、靜態(tai)(tai)曲(qu)撓試(shi)驗(yan)等(deng),以(yi)保證(zheng)這種線纜(lan)(lan)(lan)在實(shi)際(ji)使用中(zhong)滿足要(yao)求。如動(dong)態(tai)(tai)曲(qu)撓試(shi)驗(yan)主要(yao)考核軟(ruan)電(dian)(dian)(dian)纜(lan)(lan)(lan)在受(shou)到外(wai)界的(de)機械拉伸和彎(wan)(wan)曲(qu)等(deng)應(ying)力(li)時,軟(ruan)導體的(de)絞合(he)線絲(si)是否斷(duan)裂(lie)而(er)降低(di)電(dian)(dian)(dian)的(de)傳輸性能(neng),或者刺(ci)破絕(jue)緣(yuan)(yuan)而(er)降低(di)絕(jue)緣(yuan)(yuan)電(dian)(dian)(dian)氣性能(neng);絕(jue)緣(yuan)(yuan)在受(shou)到應(ying)力(li)作(zuo)用是是否變(bian)形或開(kai)裂(lie)而(er)影(ying)響電(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)電(dian)(dian)(dian)氣絕(jue)緣(yuan)(yuan)性能(neng)的(de)一種試(shi)驗(yan)方法。

3.絕緣和護套材料性(xing)能試驗(yan)

包(bao)括(kuo)熱(re)失(shi)重(zhong)、熱(re)沖擊(ji)(ji)、高溫(wen)(wen)(wen)壓力、低(di)(di)溫(wen)(wen)(wen)彎曲(qu)、低(di)(di)溫(wen)(wen)(wen)拉伸、低(di)(di)溫(wen)(wen)(wen)沖擊(ji)(ji)、阻(zu)(zu)燃(ran)性(xing)(xing)(xing)能(neng)等(deng)(deng)等(deng)(deng)。這些都是(shi)考(kao)查絕(jue)緣(yuan)和護套的(de)(de)(de)(de)(de)(de)塑料(liao)材料(liao)的(de)(de)(de)(de)(de)(de)性(xing)(xing)(xing)能(neng)好(hao)壞,如熱(re)失(shi)重(zhong)試(shi)(shi)驗是(shi)檢(jian)測(ce)經(jing)(jing)過7天80℃的(de)(de)(de)(de)(de)(de)高溫(wen)(wen)(wen)老化后材料(liao)降(jiang)解、揮發的(de)(de)(de)(de)(de)(de)程度(du)(du);熱(re)沖擊(ji)(ji)檢(jian)測(ce)在150℃高溫(wen)(wen)(wen)1h后經(jing)(jing)特殊(shu)卷(juan)繞的(de)(de)(de)(de)(de)(de)絕(jue)緣(yuan)表(biao)面是(shi)否有(you)開(kai)裂;高溫(wen)(wen)(wen)壓力檢(jian)測(ce)絕(jue)緣(yuan)材料(liao)在經(jing)(jing)過高溫(wen)(wen)(wen)再冷卻(que)后其(qi)彈(dan)性(xing)(xing)(xing)的(de)(de)(de)(de)(de)(de)保持(chi)程度(du)(du);所(suo)有(you)的(de)(de)(de)(de)(de)(de)低(di)(di)溫(wen)(wen)(wen)試(shi)(shi)驗一(yi)般指在-15℃條(tiao)件下(xia)其(qi)機械性(xing)(xing)(xing)能(neng)的(de)(de)(de)(de)(de)(de)變化,都是(shi)檢(jian)測(ce)線(xian)纜(lan)材料(liao)在低(di)(di)溫(wen)(wen)(wen)環境(jing)下(xia)是(shi)否變脆、易開(kai)裂或易拉斷等(deng)(deng)。 另外電(dian)(dian)纜(lan)的(de)(de)(de)(de)(de)(de)阻(zu)(zu)燃(ran)性(xing)(xing)(xing)能(neng)勝能(neng)很重(zhong)要,考(kao)查該項(xiang)性(xing)(xing)(xing)能(neng)的(de)(de)(de)(de)(de)(de)試(shi)(shi)驗為不(bu)延燃(ran)試(shi)(shi)驗,即對按標準安(an)裝的(de)(de)(de)(de)(de)(de)成品電(dian)(dian)纜(lan)用專門的(de)(de)(de)(de)(de)(de)火(huo)焰點燃(ran)一(yi)定的(de)(de)(de)(de)(de)(de)時(shi)間(jian),待其(qi)火(huo)焰自(zi)行熄滅(mie)后檢(jian)查線(xian)纜(lan)被(bei)燒(shao)的(de)(de)(de)(de)(de)(de)情況,當然被(bei)燒(shao)掉的(de)(de)(de)(de)(de)(de)部分越少越好(hao),說明其(qi)燃(ran)燒(shao)性(xing)(xing)(xing)差,阻(zu)(zu)燃(ran)性(xing)(xing)(xing)好(hao),越安(an)全。

4.標志檢查

標(biao)準要求電纜包裝上應(ying)附有表(biao)示產(chan)(chan)品(pin)型號(hao)、規(gui)格(ge)(ge)、標(biao)準號(hao)、廠名和(he)產(chan)(chan)地(di)的標(biao)簽(qian)或標(biao)志(zhi),規(gui)格(ge)(ge)包括額(e)定電壓、芯(xin)數和(he)導體標(biao)稱(cheng)截面(mian)等;電纜表(biao)面(mian)應(ying)印有制造廠名、產(chan)(chan)品(pin)型號(hao)和(he)額(e)定電壓的連(lian)續標(biao)志(zhi),標(biao)志(zhi)間距(ju)要求≤200mm(絕緣表(biao)面(mian))或≤500mm (護(hu)套表(biao)面(mian)),標(biao)志(zhi)內容應(ying)齊全、清晰、耐(nai)擦,這個要求是方便(bian)使用者(zhe)了解(jie)電纜的型號(hao)規(gui)格(ge)(ge)及電壓等級,以防敷設錯誤。

另外,電(dian)線(xian)絕(jue)緣(yuan)線(xian)芯(xin)應優先選用(yong)標準推薦的(de)(de)(de)顏(yan)(yan)(yan)色(se)(se),特(te)別要提的(de)(de)(de)是(shi)黃(huang)/綠(lv)(lv)雙色(se)(se)線(xian)芯(xin),這種線(xian)一般用(yong)在(zai)電(dian)器產品的(de)(de)(de)電(dian)源線(xian)中,這條特(te)殊雙色(se)(se)線(xian)專用(yong)于(yu)接(jie)地,對于(yu)黃(huang)/綠(lv)(lv)搭配(pei)標準也有(you)以下規(gui)定(ding):即(ji)對每一段長(chang)巧~的(de)(de)(de)雙色(se)(se)絕(jue)緣(yuan)線(xian)芯(xin),其(qi)中一種顏(yan)(yan)(yan)色(se)(se)應至(zhi)少(shao)覆蓋絕(jue)緣(yuan)線(xian)芯(xin)表面的(de)(de)(de)30%,且(qie)不大于(yu)70%,而另一種顏(yan)(yan)(yan)色(se)(se)則覆蓋絕(jue)緣(yuan)線(xian)芯(xin)的(de)(de)(de)其(qi)余部分,即(ji)黃(huang)/綠(lv)(lv)雙色(se)(se)應基本均衡(heng)搭配(pei)。

5.結構尺寸檢測

包(bao)括絕(jue)緣和(he)護套(tao)的(de)(de)(de)厚(hou)(hou)度(du)、最(zui)薄厚(hou)(hou)度(du)、外形尺寸等(deng)。絕(jue)緣和(he)護套(tao)的(de)(de)(de)厚(hou)(hou)度(du)大小對(dui)于(yu)電(dian)纜(lan)(lan)能夠耐受多(duo)大強度(du)的(de)(de)(de)電(dian)壓,以及其機(ji)械性能好(hao)壞都有(you)很重要(yao)的(de)(de)(de)作(zuo)用(yong),所以對(dui)于(yu)不(bu)同規(gui)格的(de)(de)(de)電(dian)纜(lan)(lan),標準(zhun)對(dui)厚(hou)(hou)度(du)都有(you)嚴(yan)(yan)格規(gui)定(ding),要(yao)求不(bu)得低于(yu)國家(jia)標準(zhun)的(de)(de)(de)規(gui)定(ding)值。電(dian)纜(lan)(lan)絕(jue)緣厚(hou)(hou)度(du)太薄會嚴(yan)(yan)重影響(xiang)電(dian)纜(lan)(lan)的(de)(de)(de)使用(yong)安(an)全,會帶來電(dian)纜(lan)(lan)擊穿、導(dao)體(ti)裸露引起漏電(dian)等(deng)安(an)全隱患,當然也(ye)不(bu)是越(yue)厚(hou)(hou)越(yue)好(hao),應不(bu)影響(xiang)安(an)裝,故標準(zhun)又設了一個(ge)外形尺寸要(yao)求對(dui)此進行限制。

常見的認證標志

1.CCC認證(zheng)強(qiang)制性認證(zheng),是進入國內市(shi)場(chang)的通行(xing)證(zheng)。

2.CB認(ren)(ren)(ren)證(zheng)(zheng)(zheng)有利于產品出口用于家庭、辦公室(shi)、車間和(he)類(lei)似場所的(de)直接涉(she)及人(ren)身(shen)(shen)安全(quan)的(de)電(dian)工產品,這(zhe)類(lei)產品在一部分國(guo)(guo)家中實行強制性認(ren)(ren)(ren)證(zheng)(zheng)(zheng),即取得該國(guo)(guo)的(de)認(ren)(ren)(ren)證(zheng)(zheng)(zheng)合格(ge)證(zheng)(zheng)(zheng)書后,才允許出口到該國(guo)(guo),并在該國(guo)(guo)市(shi)場上銷售。即使在未實行強制性認(ren)(ren)(ren)證(zheng)(zheng)(zheng)的(de)國(guo)(guo)家中,消費者為了自身(shen)(shen)的(de)安全(quan),都愿意購買經(jing)過認(ren)(ren)(ren)證(zheng)(zheng)(zheng)而帶(dai)有認(ren)(ren)(ren)證(zheng)(zheng)(zheng)標志的(de)產品。

3.CE認證

是產品(pin)進入歐(ou)盟及歐(ou)洲貿易自由(you)區國家市場的通行證。獲得認證并(bing)貼有CE標志(zhi)的產品(pin)將降低在歐(ou)洲市場上(shang)銷售的風險(xian):

1)被海(hai)關扣留和查處的風險;

2)被市場監(jian)督(du)機(ji)構查(cha)處(chu)的(de)風(feng)險;

3)同行(xing)出于競爭目的(de)的(de)指控風(feng)險。