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如何正確選擇電線電纜?
來源:www.wxdh18.com發布時間:2021年05月30日

  目前市場上電線品牌很多,電線制造的生產技術比較簡單,資金投入少,屬于普通的短平快項目,消費者對正規產品的認識不足,一部分制造商紛紛擦邊球。那么,面對很多電線產品,如何選擇符合國家標準滿意的電線?讓我們了解一些購買的基本知識:


  外觀:合格產品絕緣(護套)0層柔軟,韌性伸縮,表面層緊密,光滑,無粗糙感,具有純粹的光澤度。絕緣(護套)層表面需要清晰耐擦的標志,非正規絕緣材料生產的產品,絕緣層具有透明感、脆性、無韌性。


  絕緣層:國家標準對電線絕緣層均勻度薄,平均厚度有明確的數據規定。正規電線絕緣層厚度均勻,不偏心,緊密包裝在導體上??春细褡C:標準產品合格證明廠名、地址、售后服務電話、型號、規格結構、標稱截面(通常2.5平方、4平方電線等)、額定電壓(單芯線450/750V、雙芯保護套300/500V)、長度(國家標準規定長度為100M±0.5M)、檢查員工編號、制造日期、該產品國家標準編號或認證標志。特別是正規產品標明的單芯銅芯塑料線的型號是227IEC01(BV),不是BV。請注意購買者的認識。


  看線芯:選擇純銅原材料生產,經過嚴格拉絲、退火(軟化)、絞線芯。其表面應明亮、光滑、無毛刺、絞線密度平坦、柔軟、韌性強、不易斷裂。


電線電纜


  家用電源線應采用BVV2×2.5和BVV2×1.5型號的電線。BVV是國家標準代號,為銅質護套線,2×2.5和2×1.5分別代表2芯2.5平米和2芯1.5平米。


  一般來說,2×2.5主線、干線、2×1.5做單個電器支線、開關線。單相空調專線用BVV2×4,配備專線。


  購買電線時,首先要看卷繞的電線包裝卡上是否有生產許可證號碼,看電線外層塑料皮是否顏色鮮艷,質地細膩,用打火機點火應該沒有明火。非正規產品使用不好的塑料,顏色暗淡,質地疏松,可點火。其次,看看長度和價格。非正規產品的長度—80米。一些制造商加厚了絕緣皮,這使得專家很難看到問題。其次,可以要求業者切斷頭部,看銅芯材質2×2.5銅芯直徑1.784毫米,可以用千分尺量。正規產品電線使用精紅紫銅,外層明亮柔軟。非正規產品銅質黑硬。電阻率高,導電性能差,升溫不放心。購買電線要去電氣商店和制造商零售部等專業商店購買。


  電線的選擇:電線槽的截面積一般為照明電線1.5平方毫米,插座電線2.5平方毫米,空調電線2.5平方毫米以下,電線選擇綠黃雙色電線,開關電線(電線)選擇紅、白、黑、紫等。但是,在同一家具工程中電線的顏色用途需要一致。


  穿線管的選擇:穿線管應用阻燃PVC管,其管壁表面光滑,壁厚要求達到手指用力捏不破的強度,而且需要合格證明書,也可以用國標專用鍍鋅管做穿線管。
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