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标题: 请教交流线的截面计算 [查看完整版帖子] [打印本页]

时间: 2006-9-30 14:27

作者: xslcn 标题: 请教交流线的截面计算

S：所需线截面积(mm2)
K：使用不同电缆截面积的常数，与设计使用年数有关
I：设计电流(A)
M：配线距离(m)
V：允许电压降(V)

这个工式里面的K可在哪里查呢，，，，请教各位大侠了，，，
谢谢！！！
非常谢谢！！！！

时间: 2006-10-2 20:53

作者: LEWISCONAN

提示: 作者被禁止或删除内容自动屏蔽

时间: 2006-10-19 23:36

作者: xslcn

为什么，，，还是不明白

时间: 2006-10-20 07:49

作者: 刚果金

交流很简单的，不象直流有点复杂．５Ａ一个平方，就这么估计．

时间: 2006-10-23 17:34

作者: 无可救药

Ｋｘ——导线ｘ的电导率（ｍ／Ω• mm²）,K铜=57,K铝=34

你这个是算直流的吧

交流直接按载流量查表就好

时间: 2007-1-26 09:11

作者: nick281

2*L*A/57/△V

时间: 2007-3-1 10:32

作者: kassia

5楼正解，算压降也可以根据单位长度不同规格导线的阻值来计算，阻值可查表。

时间: 2007-5-11 17:29

作者: wzhj1213

利用这个公式算出的截面积怎么不对呀，比方说我现在我要用75米、24A、允许压降1V的最小平方数我怎么会算出2903mm平方呀

时间: 2007-5-16 11:54

作者: feier090 标题: 回复：（无可救药）Ｋｘ——导线ｘ的电导率（ｍ／Ω&#...

怎么查表啊？表在哪儿？把表贴上来撒。3x

时间: 2007-6-29 15:48

作者: guocanhe

一楼的是算直流的

时间: 2007-6-30 16:52

作者: cglipp

<div class="msgheader">QUOTE:</div><div class="msgborder">以下是引用刚果金在2006-10-20 7:49:00的发言： 交流很简单的，不象直流有点复杂．５Ａ一个平方，就这么估计．</div>这个估算是如何来的，不分多芯还是独芯吗？偏差是多少？

时间: 2007-8-12 15:00

作者: nnxiaolan

这种是还不够正确的

时间: 2007-8-21 16:51

作者: gzq982

我们做设计的话一般是先算出最大负荷的电流,然后查表得出多少电流对应多少截面积的交流电缆,另外适当的留一点余量.你这个按公式计算应该是那种需要精确多少多少电压的,一般交流电压距离不是特别长的话压降都不管他.附件是我们公司用的一个电缆载流量表,供参考.[attach]9207[/attach]

时间: 2007-8-26 02:37

作者: lhd918

顶13楼

时间: 2007-12-1 22:45

作者: ldr

<table class="MsoNormalTable" cellspacing="0" cellpadding="0" width="660" border="1" style="WIDTH: 495pt; mso-cellspacing: 0cm;"><tbody><tr style="HEIGHT: 45.75pt; mso-yfti-irow: 0; mso-yfti-firstrow: yes;"><td width="14%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 14%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">导线截面(mm 2 )</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">　1　</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">　1．5　</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">　2．5　</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">　4　</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">　6　</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">　10　</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">　16　</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">　25　</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">　35　</td><td width="5%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 5%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">　50　</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">　70　</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">95　</td><td width="4%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 4%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 45.75pt; BACKGROUND-COLOR: transparent;">120</td></tr><tr style="HEIGHT: 40.5pt; mso-yfti-irow: 1;"><td width="14%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 14%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">载流是截面倍数</td><td width="21%" colspan="3" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 21%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">9</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">8</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">7</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">6</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">5</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">4</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">3．5</td><td width="12%" colspan="2" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 12%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">3</td><td width="11%" colspan="2" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 11%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">2．5</td></tr><tr style="HEIGHT: 40.5pt; mso-yfti-irow: 2; mso-yfti-lastrow: yes;"><td width="14%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 14%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">载流量(A)</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">9</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">14</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">23</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">32</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">48</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">60</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">90</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">100</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">123</td><td width="5%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 5%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">150</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">210</td><td width="7%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 7%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">238</td><td width="4%" style="BORDER-RIGHT: #f0f0f0; PADDING-RIGHT: 0.75pt; BORDER-TOP: #f0f0f0; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #f0f0f0; WIDTH: 4%; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 40.5pt; BACKGROUND-COLOR: transparent;">300</td></tr></tbody></table>

时间: 2007-12-3 19:18

作者: lbin75

我也想要这个计算公式！谁有也给我发一份，谢谢！E-MAIL

BIN75@163.COM

时间: 2007-12-8 08:09

作者: lawyer0101

谢谢学习了

时间: 2007-12-15 00:42

作者: h5522

学习了

时间: 2021-5-14 14:46

作者: Holly8020

想下载13楼的资料

时间: 2021-7-16 16:02

作者: searchingban

这个表长得真可怕
没有附件吗

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