選(xuan)擇(ze)電纜時(shi)需要考慮哪些問題
作者: 發布時間:2024-01-08
一、電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)額(e)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)等級電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)額(e)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)等級是(shi)指(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)設(she)計電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya),電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)能夠(gou)承(cheng)受(shou)的(de)(de)(de)(de)(de)更高電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)。選擇(ze)(ze)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)時(shi)應(ying)根據電(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)設(she)備(bei)的(de)(de)(de)(de)(de)額(e)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)等級來(lai)選擇(ze)(ze)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)額(e)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)等級,確保(bao)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)安(an)全性(xing)能二、電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)截面(mian)積(ji)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)截面(mian)積(ji)也是(shi)指(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)導體(ti)的(de)(de)(de)(de)(de)橫截面(mian)積(ji),它直接影響(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)傳(chuan)輸能力。選擇(ze)(ze)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)時(shi)應(ying)根據電(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)設(she)備(bei)的(de)(de)(de)(de)(de)負載(zai)電(dian)(dian)(dian)(dian)(dian)(dian)流來(lai)選擇(ze)(ze)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)截面(mian)積(ji),以確保(bao)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)能夠(gou)承(cheng)受(shou)電(dian)(dian)(dian)(dian)(dian)(dian)流負載(zai)并傳(chuan)輸電(dian)(dian)(dian)(dian)(dian)(dian)能。三、電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)材(cai)(cai)(cai)質(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)材(cai)(cai)(cai)質(zhi)有導體(ti)材(cai)(cai)(cai)質(zhi)和絕緣材(cai)(cai)(cai)質(zhi)。常(chang)用的(de)(de)(de)(de)(de)導體(ti)材(cai)(cai)(cai)質(zhi)有銅、鋁等。絕緣材(cai)(cai)(cai)質(zhi)應(ying)根據電(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)設(she)備(bei)的(de)(de)(de)(de)(de)工(gong)作環境選擇(ze)(ze),常(chang)用的(de)(de)(de)(de)(de)絕緣材(cai)(cai)(cai)質(zhi)有聚(ju)氯乙烯、交(jiao)聯(lian)聚(ju)乙烯等。材(cai)(cai)(cai)質(zhi)應(ying)該(gai)根據電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)使(shi)用環境進行選擇(ze)(ze)。四、電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)阻(zu)燃(ran)性(xing)能電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)阻(zu)燃(ran)性(xing)能是(shi)非(fei)常(chang)重要的(de)(de)(de)(de)(de),電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)(de)阻(zu)燃(ran)性(xing)能確保(bao)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)在火災發(fa)生時(shi)...
選用阻燃電纜時注(zhu)意的問(wen)題
作者: 發布時間:2023-12-23
設計(ji)(ji)(ji)人(ren)員應(ying)(ying)該根據阻(zu)(zu)(zu)(zu)(zu)燃(ran)(ran)(ran)(ran)(ran)電(dian)(dian)(dian)纜(lan)的具體特性(xing)(xing)對阻(zu)(zu)(zu)(zu)(zu)燃(ran)(ran)(ran)(ran)(ran)電(dian)(dian)(dian)纜(lan)進(jin)(jin)行設計(ji)(ji)(ji)選(xuan)(xuan)用(yong)及敷設施工(gong),并(bing)應(ying)(ying)注意以下幾個問(wen)題(ti): (1)由(you)于含(han)鹵阻(zu)(zu)(zu)(zu)(zu)燃(ran)(ran)(ran)(ran)(ran)電(dian)(dian)(dian)纜(lan)(包括(kuo)阻(zu)(zu)(zu)(zu)(zu)燃(ran)(ran)(ran)(ran)(ran)電(dian)(dian)(dian)纜(lan)、低(di)鹵低(di)煙阻(zu)(zu)(zu)(zu)(zu)燃(ran)(ran)(ran)(ran)(ran)電(dian)(dian)(dian)纜(lan))在(zai)(zai)(zai)燃(ran)(ran)(ran)(ran)(ran)燒時(shi)會釋(shi)放(fang)具有腐(fu)蝕性(xing)(xing)的鹵酸氣(qi)體,大大阻(zu)(zu)(zu)(zu)(zu)礙消(xiao)防工(gong)作從而(er)耽誤救火時(shi)間并(bing)加劇(ju)火勢蔓延(yan),因(yin)此在(zai)(zai)(zai)人(ren)口密度(du)較(jiao)高的公眾(zhong)場(chang)所應(ying)(ying)盡量設計(ji)(ji)(ji)選(xuan)(xuan)用(yong)無鹵低(di)煙阻(zu)(zu)(zu)(zu)(zu)燃(ran)(ran)(ran)(ran)(ran)電(dian)(dian)(dian)纜(lan)。在(zai)(zai)(zai)人(ren)口密度(du)較(jiao)小的作業區可以選(xuan)(xuan)用(yong)任(ren)意一(yi)種(zhong)阻(zu)(zu)(zu)(zu)(zu)燃(ran)(ran)(ran)(ran)(ran)電(dian)(dian)(dian)纜(lan)。 (2)阻(zu)(zu)(zu)(zu)(zu)燃(ran)(ran)(ran)(ran)(ran)電(dian)(dian)(dian)纜(lan)分為A、B、C3類(lei),其中A類(lei)阻(zu)(zu)(zu)(zu)(zu)燃(ran)(ran)(ran)(ran)(ran)電(dian)(dian)(dian)纜(lan)性(xing)(xing)能(neng)較(jiao)B、C類(lei)更優,價格也最貴(gui)。設計(ji)(ji)(ji)人(ren)員提供訂貨清冊時(shi)應(ying)(ying)標明阻(zu)(zu)(zu)(zu)(zu)燃(ran)(ran)(ran)(ran)(ran)電(dian)(dian)(dian)纜(lan)的類(lei)別。 (3)從外(wai)觀上無法區分阻(zu)(zu)(zu)(zu)(zu)燃(ran)(ran)(ran)(ran)(ran)電(dian)(dian)(dian)纜(lan)的A、B、C類(lei)別,只有靠制(zhi)造廠(chang)家進(jin)(jin)行供貨保證(zheng),因(yin)此在(zai)(zai)(zai)設計(ji)(ji)(ji)選(xuan)(xuan)用(yong)時(shi)應(ying)(ying)慎重選(xuan)(xuan)擇電(dian)(dian)(dian)纜(lan)制(zhi)造廠(chang)家。 ...
如何判斷阻燃耐火電纜的質量
作者(zhe): 發布時間:2023-12-23
判斷阻燃(ran)(ran)(ran)耐火電(dian)(dian)纜質量的(de)一般要(yao)求如下: 1、阻燃(ran)(ran)(ran)耐火電(dian)(dian)纜顏(yan)(yan)(yan)色(se)(se)(se)識(shi)(shi)別。 1)顏(yan)(yan)(yan)色(se)(se)(se)要(yao)求:徽(hui)標(biao)顏(yan)(yan)(yan)色(se)(se)(se)必須(xu)(xu)(xu)符合或(huo)(huo)接近GB6995.2-86 《電(dian)(dian)線(xian)電(dian)(dian)纜識(shi)(shi)別標(biao)志第2部分(fen):標(biao)準顏(yan)(yan)(yan)色(se)(se)(se)》中指定(ding)的(de)特定(ding)顏(yan)(yan)(yan)色(se)(se)(se)。 2)清(qing)晰度:標(biao)志顏(yan)(yan)(yan)色(se)(se)(se)應(ying)易于識(shi)(shi)別或(huo)(huo)易于識(shi)(shi)別。 3)內(nei)摩擦(ca)性:標(biao)志要(yao)有(you)內(nei)摩擦(ca),擦(ca)拭后的(de)顏(yan)(yan)(yan)色(se)(se)(se)基本不變。 2、阻燃(ran)(ran)(ran)耐火電(dian)(dian)纜數(shu)字(zi)識(shi)(shi)別。 1)顏(yan)(yan)(yan)色(se)(se)(se)要(yao)求:載(zai)體必須(xu)(xu)(xu)是(shi)(shi)相同的(de)顏(yan)(yan)(yan)色(se)(se)(se),所有(you)識(shi)(shi)別數(shu)字(zi)的(de)顏(yan)(yan)(yan)色(se)(se)(se)必須(xu)(xu)(xu)是(shi)(shi)相同的(de)顏(yan)(yan)(yan)色(se)(se)(se)。載(zai)體顏(yan)(yan)(yan)色(se)(se)(se)和徽(hui)標(biao)顏(yan)(yan)(yan)色(se)(se)(se)必須(xu)(xu)(xu)有(you)很(hen)大差異,并且必須(xu)(xu)(xu)能夠滿足或(huo)(huo)接近GB6995.2-86中指定(ding)的(de)特定(ding)顏(yan)(yan)(yan)色(se)(se)(se)。 2)清(qing)晰度:數(shu)字(zi)標(biao)識(shi)(shi)要(yao)清(qing)晰,書寫(xie)要(yao)清(qing)晰。 3)內(nei)摩擦(ca)性:數(shu)字(zi)標(biao)識(shi)(shi)必須(xu)(xu)(xu)...