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 <title><![CDATA[控制柜中直流开关电源接线问题]]></title>
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 <description><![CDATA[Latest 50 replies of 控制柜中直流开关电源接线问题]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼主要好好学习一下基础知识啊]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-136958#1209278.html]]></link>
 <author><![CDATA[qw58663289]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 14 Feb 2012 10:02:25 +0000]]></pubdate>
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 <description><![CDATA[0V就是24v电源的负端。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-136958#1209276.html]]></link>
 <author><![CDATA[pengwang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 14 Feb 2012 09:55:42 +0000]]></pubdate>
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 <description><![CDATA[[s:17]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-136958#1209232.html]]></link>
 <author><![CDATA[lichenhui333]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 14 Feb 2012 08:25:09 +0000]]></pubdate>
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 <description><![CDATA[直流电源的参考位“0”位，不允许直接与供电系统的零线、接地线连接。控制柜、传感器、电机等的外壳必须接供电电源的PE端。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-136958#1209204.html]]></link>
 <author><![CDATA[wwcwwc]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 14 Feb 2012 07:19:09 +0000]]></pubdate>
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 <description><![CDATA[[s:28]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-136958#1209178.html]]></link>
 <author><![CDATA[mhbxfys]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 14 Feb 2012 06:30:29 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[回校好好看看书吧]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-136958#1208953.html]]></link>
 <author><![CDATA[李磊88]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 13 Feb 2012 14:38:48 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼主先看一下交直流的原理吧]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-136958#1208721.html]]></link>
 <author><![CDATA[llllll]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 13 Feb 2012 07:38:52 +0000]]></pubdate>
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