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 <title><![CDATA[变频器]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-66440.html]]></link>
 <description><![CDATA[Latest 50 replies of 变频器]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <title><![CDATA[]]></title>
 <description><![CDATA[学习了，原来如此，每天调试都没想过这问题]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-66440#803761.html]]></link>
 <author><![CDATA[dujiansheng]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 09 Jun 2010 11:30:37 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[V/F变频器的输出电压是随频率变化而变化的，
矢量形变频器是恒力矩输出的。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-66440#803683.html]]></link>
 <author><![CDATA[chenpingyg]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 09 Jun 2010 09:45:07 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[电机功率肯定是变化了，自己勾过电流较50Hz时有增加。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-66440#801717.html]]></link>
 <author><![CDATA[roy599]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 06 Jun 2010 13:58:34 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[变频器工作是在0---50赫兹是恒转矩控制，50赫兹以上是恒功率控制。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-66440#801568.html]]></link>
 <author><![CDATA[雪中梅花]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 06 Jun 2010 10:58:45 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[功率是降低了，但是扭矩力是不变的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-66440#801029.html]]></link>
 <author><![CDATA[佘顺红]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 05 Jun 2010 14:21:37 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[肯定变了，工频以下是恒转矩
工频以上是恒功率，]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-66440#801023.html]]></link>
 <author><![CDATA[佘顺红]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 05 Jun 2010 14:17:32 +0000]]></pubdate>
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