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 <title><![CDATA[供电线路电压降怎么计算 请高手进]]></title>
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 <description><![CDATA[电压降U=线电阻R*电流I 
电阻R=ρl/s&nbsp;&nbsp; 铜芯电线的电阻率：ρ＝0.0172
I=P/U
电压降U=RI
注意I=P/(1.732*COSφU)&nbsp;&nbsp;我算的是线路损耗压降，还有负载的（电阻，感性）]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-109147#1064852.html]]></link>
 <author><![CDATA[seatao]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 09 Jun 2011 05:02:11 +0000]]></pubdate>
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