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選購電力電纜需要注意哪些事項?

time:2020-05-04 15:19:27
怎么挑選電纜:

  技能功能:

  1).制品絕緣線和制品電線,放在20+5C的室溫水中至少150c1小時后,能飽嘗表7規則的溝通電壓實驗。

  2)電線具有杰出的電氣絕緣功能,力學功能和不接連功能,質量牢靠,便利經用:

  3)制品電線的絕緣或護套外表應有廠名,類型和電壓接連標志。

  電力電纜的挑選應遵循以下準則:

  (1)電纜的額外電壓要大于或等于安點綴供電系統的額外電壓;

  (2)電纜繼續容許電流應等于或大于供電負載的最大繼續電流;

  (3)線芯截面要滿意供電系統短路時的穩定性的需求;

  (4)依據電纜長度驗算電壓降是不是符合需求;

  (5)線路結尾的最小短路電流應能使保護裝置牢靠的動作。

  電線電纜的制作與大多數機電商品的生產方式是徹底不一樣的。機電商品一般選用將另件安裝成部件、多個部件再安裝成單臺商品,商品以臺數或件數計量。電線電纜是以長度為根本計量單位。一切電線電纜都是從導體加工開端,在導體的外圍一層一層地加上絕緣、屏蔽、成纜、護層等而制成電線電纜商品。商品結構越雜亂,疊加的層次就越多。

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