有關LGJ鋼芯鋁絞線的講解

    如果電氣設備的LGJ鋼芯鋁絞線與(yu)外殼之間的絕緣(yuan)(yuan)達(da)不(bu)(bu)到(dao)(dao)(dao)規定的絕緣(yuan)(yuan)值時(shi)，電(dian)氣設備不(bu)(bu)能(neng)投入(ru)(ru)使(shi)用，此時(shi)要(yao)分析是因(yin)受(shou)潮而引起(qi)絕緣(yuan)(yuan)下降，還是因(yin)絕緣(yuan)(yuan)層損壞而使(shi)絕緣(yuan)(yuan)達(da)不(bu)(bu)到(dao)(dao)(dao)要(yao)求。若(ruo)是受(shou)潮而使(shi)絕緣(yuan)(yuan)達(da)不(bu)(bu)到(dao)(dao)(dao)要(yao)求時(shi)，廊進(jin)行烘干，絕緣(yuan)(yuan)達(da)到(dao)(dao)(dao)要(yao)求后才(cai)能(neng)投入(ru)(ru)使(shi)用；若(ruo)是絕緣(yuan)(yuan)層受(shou)損，必須修(xiu)復(fu)后才(cai)能(neng)投入(ru)(ru)使(shi)用，檢查(cha)時(shi)一般(ban)先檢查(cha)接(jie)線(xian)(xian)部(bu)分，接(jie)線(xian)(xian)松動或可(ke)動接(jie)線(xian)(xian)的磨損，由于線(xian)(xian)路(lu)的路(lu)徑(jing)有限，又不(bu)(bu)可(ke)能(neng)在一個路(lu)徑(jing)上架多條(tiao)線(xian)(xian)路(lu)，人們(men)想出了(le)采(cai)用一個路(lu)徑(jing)，一套鐵塔(ta)(ta)，掛多條(tiao)導線(xian)(xian)，對500KV的輸電(dian)線(xian)(xian)路(lu)，我國大多采(cai)用掛四條(tiao)導線(xian)(xian)的方式，這種架線(xian)(xian)的方式稱(cheng)為同塔(ta)(ta)并(bing)架。

    不同金屬、不同規格、不同絞向導線，嚴禁在同檔距內連接，在一個檔距內，每根導線只允許有一個接頭。鋁絞線應采用壓接法，導線接頭的電阻不應大于相同長度導線的電阻，導線接頭機械強度不應小于導線計算拉斷力的90％。LGJ鋼芯鋁絞線的接(jie)(jie)(jie)(jie)(jie)頭距(ju)導(dao)(dao)線(xian)(xian)固定(ding)點距(ju)離不應(ying)(ying)(ying)小于0.5m，線(xian)(xian)夾(jia)規格(ge)應(ying)(ying)(ying)與(yu)導(dao)(dao)線(xian)(xian)截面積(ji)相對應(ying)(ying)(ying)，銅、鋁(lv)導(dao)(dao)線(xian)(xian)連(lian)接(jie)(jie)(jie)(jie)(jie)應(ying)(ying)(ying)使(shi)用銅鋁(lv)過(guo)渡(du)(du)線(xian)(xian)夾(jia)，線(xian)(xian)夾(jia)規格(ge)應(ying)(ying)(ying)與(yu)導(dao)(dao)線(xian)(xian)截面積(ji)相符，且連(lian)接(jie)(jie)(jie)(jie)(jie)點只能處于不受力的跳線(xian)(xian)上，應(ying)(ying)(ying)采用低壓(ya)電(dian)(dian)纜配(pei)電(dian)(dian)分(fen)接(jie)(jie)(jie)(jie)(jie)箱(xiang)(xiang)(xiang)。低壓(ya)電(dian)(dian)纜的相線(xian)(xian)、中性線(xian)(xian)、電(dian)(dian)纜接(jie)(jie)(jie)(jie)(jie)線(xian)(xian)端子(zi)、電(dian)(dian)纜分(fen)接(jie)(jie)(jie)(jie)(jie)箱(xiang)(xiang)(xiang)端子(zi)排所使(shi)用材質應(ying)(ying)(ying)相同；材質不同時，應(ying)(ying)(ying)采用相應(ying)(ying)(ying)材質的過(guo)渡(du)(du)接(jie)(jie)(jie)(jie)(jie)線(xian)(xian)端子(zi)連(lian)接(jie)(jie)(jie)(jie)(jie)，已(yi)壓(ya)接(jie)(jie)(jie)(jie)(jie)好的電(dian)(dian)纜接(jie)(jie)(jie)(jie)(jie)線(xian)(xian)端子(zi)應(ying)(ying)(ying)與(yu)電(dian)(dian)纜分(fen)接(jie)(jie)(jie)(jie)(jie)箱(xiang)(xiang)(xiang)端子(zi)排進行(xing)牢固可靠的連(lian)接(jie)(jie)(jie)(jie)(jie)。