電線電纜網(wǎng) > 國外線纜 > 芯線絞距以及銅線絞距是什么意思啊?（完整版）
芯線絞距以及銅線絞距是什么意思啊? - 無圖版
ak --- 2008-10-06 16:12:37
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ZHANGTAOC --- 2008-10-06 17:06:23
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也就是一根芯線或單線,旋轉(zhuǎn)一周后,測量其兩點直線距離,
ZHANGTAOC --- 2008-10-06 17:08:03
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說的不是很好,請找些絞線書籍看一下絞線的理論知識,或直接請教工人
caolaile7 --- 2008-10-06 19:04:03
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ZHANGTAOC:
也就是一根芯線或單線,旋轉(zhuǎn)一周后,測量其兩點直線距離,
芯線是線芯嗎？線芯絞距和外圍絞距科是不一樣的
ULcable --- 2008-10-06 21:55:10
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Aspecimen of approximately four to six feet in length shall be cut from thesample coil or reel. The specimen shall be tightly secured, at both ends, tothe work surface before the window is cut, to ensure that the conductors cannot untwist. A “window”, exposing the conductor assembly, shall be cut in thejacket, while leaving at least 12 inches (300 mm) of the jacket intact at bothends. The window shall be approximately 1/4 of the circumference in width andapproximately one inch (25 mm) longer than twice the maximum required laylength for the sample. e.g. for a 3-conductor, 18 AWG cord (which has a max.lay of 2-1/4 inches or 57 mm), the window is:
2 (2-1/4) + 1 = approx. 5-1/2 inches long, or
2 (57) + 25 = approx. 139 mm
簡單地說就是在外被上開一個4分之1個圓的窗口，窗口長度大概是這種線號的電線最大允許絞距的兩倍加上25mm，然后量出2個絞距，除以2，得出實際絞距。
銅線絞距概念與芯線絞距類似，不同的是指的是芯線內(nèi)的銅絲的絞距，測量方法也不是窗口法，一般是測一根銅絲的10個絞距再平均。
yy2008 --- 2008-10-07 12:40:24
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絞距是芯線或銅線旋轉(zhuǎn)一圈后的直線距離,
或旋轉(zhuǎn)十圈后的直線長度除以十,為絞距,通常采用此中方法測量.
專業(yè)制造 --- 2008-10-08 11:00:07
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andywork --- 2010-04-11 19:00:31
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dejialin --- 2010-04-11 21:36:26
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學(xué)習(xí)了
yzwlucky --- 2010-04-12 08:00:42
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銅絲是絞合導(dǎo)體中其中一條銅絲同一方向環(huán)繞導(dǎo)體一周的距離。UL通常是測量10倍絞距。除以10. 測試方法就是在導(dǎo)體上剝離一條單絲，用手松開單絲，退繞導(dǎo)體10圈，上面有一絞路很清楚的，測量10個距離就行。
芯線其實也一樣，但芯線更好測量，芯線有顏色，你找一個單色，同一方向環(huán)繞一圈后這條線出現(xiàn)的距離就是��！可以取平均數(shù)。比銅芯更好測量。
percy --- 2011-04-14 16:09:15
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mancinic --- 2014-03-21 14:37:56
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厲害