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電線電纜的3+2和4+1的區別。
來源:www.wxdh18.com發布時間:2021年05月30日

電線電纜有人下單芯和多芯的區別,不清楚的客戶有疑問,3+2芯和4+1芯,看上去全是5芯,這二者有哪些區別嗎?下列是電纜3+2和4+1芯的含意和區別。


一、電線和電纜的區別。


電線由一條或幾個綿軟的輸電線組成,業務外包為綿軟的外護層


電纜由一根或兩根絕緣層包的輸電線組成,業務外包用金屬材料或橡皮擦做成的堅毅表層。


電線電纜


二、電線上的3+2和4+1表明電纜的電纜型號,電纜中有互相絕緣層的2條或3條、3+2條、4+1條、5條,各自稱之為2芯或3芯、3+2芯、4+1芯、5等銅芯電纜。


三、下面以電力電纜YJV為例


YJV 3+2芯


  3+2電纜的3就是三根相線(L1,L2,L3相線,這三條線直徑大)線的直徑一樣大,2就是零線和和PE線,一條線用于接零線(N中性線,這條直徑相對L1,L2,L3?。?、一條線用于接接地線(PE接地保護線,這條直徑相對L1,L2,L3也?。?。


四、YJV 4+1芯


  4+1電纜的4就是三根相線和零線的直徑一樣大,1就是PE接地線單獨是一個直徑;4+1 就是一條電纜由4條線,其中一條線用于接火線(L1相線),一條線用于接零線(N中性線),一條線用于接接地線(PE接地保護線)也行。
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