電線電纜拉線設備型式尺寸

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GB/T12706-2008 電纜假定直徑的計算公式 1、 導體假定直徑 dL 不考慮形狀和緊壓程度如何，每一標稱截面積導體的假定直徑（ dL）由下表 給出： 導體截面 mm2 dL/mm 導體截面 mm2 dL/mm 導體截面 mm2 dL/mm 導體截面 mm2 dL/mm 1.5 1.4 25 5.6 150 13.8 630 28.3 2.5 1.8 35 6.7 185 15.3 800 31.9 4 2.3 50 8.0 240 17.5 1000 35.7 6 2.8 70 9.4 300 19.5 1200 39.1 10 3.6 95 11.0 400 22.6 1400 42.2 16 4.5 120 12.4 500 25.2 1600 45.1 2、絕緣線芯假定直徑 DC * 無半導電屏蔽的電纜線芯： DC= d L+2t i