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标题: 求助1000A直流需要多大平方的铜线 [查看完整版帖子] [打印本页]

时间: 2008-1-15 17:44

作者: 载波机 标题: 求助1000A直流需要多大平方的铜线

本人不大懂电源，求助1000A直流需要多大平方的铜线，谢谢！

时间: 2008-1-15 18:23

作者: 看天行道

那个都是用铜排了,或者是铜缆,不能用铜线!

时间: 2008-1-15 18:51

作者: 载波机

<div class="msgheader">QUOTE:</div><div class="msgborder">以下是引用看天行道在2008-1-15 18:23:00的发言： 那个都是用铜排了,或者是铜缆,不能用铜线!</div>对，就是铜缆，铜排连不上，谢谢，请再赐教

时间: 2008-1-15 21:12

作者: clarent0210

给你一个常用电工口诀，<h1 style="MARGIN: 17pt 0cm 16.5pt; WORD-BREAK: break-all; LINE-HEIGHT: 180%;">十下五,百上二,二五三五四三界,七零九五两倍半,温度八九折，铜材升级算.</h1><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">解释<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">:10mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">以下的铝导线载流量按５Ａ<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">/<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">平方毫米计算；<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">100mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">以上的铝导线载流量按<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">Ａ<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">/<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">平方毫米计算；<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">25mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">的铝导线载流量按<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">4<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">Ａ<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">/<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">平方毫米计算；<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">35mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">的铝导线载流量按<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">3<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">Ａ<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">/<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">平方毫米计算；<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">70mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">、<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">95mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">的铝导线载流量按<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">2.5<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">Ａ<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">/<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">平方毫米计算；＂铜材升级算＂：例如计算<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">120mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">的铜导线载流量，可以选用<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">150mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">的铝导线，求铝导线的载流量；受温度影响，最后还要乘以<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">0.8<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">或<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">0.9<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">（依地理位置）．

时间: 2008-1-16 00:05

作者: druze

楼上的真强

时间: 2008-1-16 08:23

作者: 服务生

每次安装线缆都是按?<电工手册>来.

时间: 2008-1-16 09:13

作者: kuaileguo

我顶四楼

时间: 2008-1-16 09:55

作者: ccdonny

4楼的口诀没错，可是你说的是计算交流线缆的口诀，对直流电不适用。直流还是用还是用公式吧：2*I*L/57/V，还是请楼主把事情说清楚吧。

时间: 2008-1-16 10:20

作者: 载波机

先谢谢楼上的，我说的就是直流的，你给的公式中I,L,V各代表什么意思，我真是对电源不怎么懂，谢谢。我的意思就是如果有1000A的直流电从这条铜缆上通过，这条铜缆要多少平方？或者一平方铜缆最大可以通过多少A直流电流？

时间: 2008-1-16 10:29

作者: zhouxianger

高人啊!学习了!

时间: 2008-1-16 16:21

作者: lily6189

学习了

时间: 2008-1-16 16:22

作者: lily6189

学习了

时间: 2008-1-16 18:45

作者: lbin75

S=-IL/57*U  S导线截面积，I负载电流，L导线长度（取正负极的总长），U这段电缆产生的压降

时间: 2008-1-22 15:17

作者: lnyuan66

交流:布线小于30米时,按2.5/平方毫米算.直流:面积(平方毫米)=总电流×线长(米)÷导电系数(铜=57)×导线允许压降(最大只能=3.2V)

时间: 2008-1-27 20:53

作者: caotou

学习一下！！！！

时间: 2008-2-4 22:11

作者: PZHHJDcnc

好东西！！谢谢！！

时间: 2008-2-5 11:56

作者: ecit

对这一块还是不太懂哦

时间: 2008-2-26 18:55

作者: lbin75

630mm2左右

时间: 2008-4-7 19:52

作者: sdcrc_cn

给你一个常用电工口诀，
<h1 style="MARGIN: 17pt 0cm 16.5pt; WORD-BREAK: break-all; LINE-HEIGHT: 180%;">十下五,百上二,二五三五四三界,七零九五两倍半,温度八九折，铜材升级算. </h1><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">解释<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">:10mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">以下的铝导线载流量按５Ａ<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">/<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">平方毫米计算；<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">100mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">以上的铝导线载流量按<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">Ａ<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">/<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">平方毫米计算；<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">25mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">的铝导线载流量按<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">4<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">Ａ<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">/<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">平方毫米计算；<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">35mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">的铝导线载流量按<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">3<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">Ａ<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">/<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">平方毫米计算；<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">70mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">、<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">95mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">的铝导线载流量按<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">2.5<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">Ａ<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">/<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">平方毫米计算；＂铜材升级算＂：例如计算<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">120mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">的铜导线载流量，可以选用<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">150mm2<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">的铝导线，求铝导线的载流量；受温度影响，最后还要乘以<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">0.8<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">或<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa; mso-fareast-font-family: 宋体;">0.9<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">（依地理位置）．<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: verdana; mso-hansi-font-family: verdana; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">经典绝对好东西。但是我记得好像要计算最大电流还需要额定电流*1.2才可以。一般使用最大电流来确定使用铜线或铜排的规格

时间: 2008-5-19 08:56

作者: yjs2577

同意14楼的，能提供公式算法依据吗，谢谢

时间: 2008-5-21 07:05

作者: w816098 标题: 计算公式

A=<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">ΣI*L/K<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">ΔU<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">A:导线截面积<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">ΣI:流过导线的总电流（A)<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">L：导线回路长度<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">K:导线的导电系数<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">ΔU：导线上允许压降<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">K铜=57

时间: 2008-9-11 09:36

作者: wxbcnc

给你一个常用电工口诀，

十下五,百上二,二五三五四三界,七零九五两倍半,温度八九折，铜材升级算.

解释:10mm2以下的铝导线载流量按５Ａ/平方毫米计算；100mm2以上的铝导线载流量按2Ａ/平方毫米计算；25mm2的铝导线载流量按4Ａ/平方毫米计算；35mm2的铝导线载流量按3Ａ/平方毫米计算；70mm2、95mm2的铝导线载流量按2.5Ａ/平方毫米计算；＂铜材升级算＂：例如计算120mm2的铜导线载流量，可以选用150mm2的铝导线，求铝导线的载流量；受温度影响，最后还要乘以0.8或0.9（依地理位置）．

好强！！！

时间: 2008-9-12 17:52

作者: by737600 标题: 好强

电工中的极品

通信人家园 (https://www.txrjy.com/)