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 <title><![CDATA[变频器长期通电]]></title>
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 <description><![CDATA[Latest 50 replies of 变频器长期通电]]></description>
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 <description><![CDATA[变频器一天24小时通电，一般随便通个几年没问题。号称运行几万个小时无故障。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-38262#542963.html]]></link>
 <author><![CDATA[天使之心]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sun, 07 Jun 2009 07:55:31 +0000]]></pubdate>
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 <description><![CDATA[变频器可以长期通电]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-38262#542776.html]]></link>
 <author><![CDATA[hbyxgs]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sun, 07 Jun 2009 02:51:05 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[正常条件下,变频器可以长期通电,经常通断变频器电源对于整流模块有不利的因素.还有接触器应该加到前面好.总之,你应该理解变频器的结构和原理后,分析这个问题就比较容易.]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-38262#537077.html]]></link>
 <author><![CDATA[wwcwwc]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 01 Jun 2009 08:44:26 +0000]]></pubdate>
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