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target="_blank">网站首页</a> >> <a href="/Technology/" target="_blank">技术中?/a> >> <a href="/Article/ArticleList32/" target="_blank">电气百科</a> >> <span>正文</span></div> <!-- main_content begin--> <div id="w78j5f8nb5" class="maincontent"> <!-- left begin --> <div id="w78j5f8nb5" class="news_left"> <div id="w78j5f8nb5" class="brand_news_details"> <h1>电气百科:关于软启动器和变频器,常见故障和区?/h1><table style="border-bottom:1px dotted #e4e4e4;" align="center"><tr><td><div id="w78j5f8nb5" class="news_mes">文章来源:【工业电器网?作者:??点击?span id="HitNum"></span>?时间?span id="dTime">2020/1/14 9:29:03</span><input type="hidden" id="ID" value="100909366"/><input type="hidden" id="TypeID" value="2"/></div> </td> <td><div id="ckepop"></div></td></tr></table><div id="Content" style="display:none;">[电气百科:关于软启动器和变频器,常见故障和区别]:什么是软启动器和变频器软启动器是一种集软启动、软停车、轻载节能和多功能保护于一体的电机控制装备。实现在整个启动过程中无冲击而平滑的启动电机,而且可根据电动机负载的特性来调节启动过程中的各种参数,如限流...</div><div id="w78j5f8nb5" class="brand_news_con"><p style="text-indent:2em;"> <strong>什么是软启动器和变频器</strong> </p> <p style="text-indent:2em;"> <span>Ů侫软启动器是一种集软启动、软停车、轻载节能和多功能保护于一体的电机控制装备。实现在整个启动过程中无冲击而平滑的启动电机,而且可根据电动机负载的特性来调节启动过程中的各种参数,如限流值、启动时间等?/span> </p> <p style="text-indent:2em;"> 变频器(Variable-frequency Drive,VFD)是应用变频技术与微电子技术,通过改变电机工作电源频率方式来控制交流电动机的电力控制设备?span style="color:#FFFFFF;">工业视频网报道(http://v.cnelc.com?看工业视频很精彩-工业短视频(http://vm.cnelc.com?/span> </p> <p style="text-indent:2em;">Ů侫 变频器主要由整流(交流变直流)、滤波、逆变(直流变交流)、制动单元、驱动单元、检测单元微处理单元等组成。变频器靠内部IGBT的开断来调整输出电源的电压和频率,根据电机的实际需要来提供其所需要的电源电压,进而达到节能、调速的目的,另外,变频器还有很多的保护功能,如过流、过压、过载保护等等。随着工业自动化程度的不断提高,变频器也得到了非常广泛的应用?</p> <p style="text-indent:2em;"> <strong>软启动器常见故障?/strong> </p> <p style="text-indent:2em;">Ů侫 1、在调试过程中出现起动报缺相故障,软起动器故障灯亮,电机没反应?</p> <p style="text-indent:2em;">Ů侫 2、用户在使用过程中出现起动完毕,旁路接触器不吸合现象?</p> <p style="text-indent:2em;">Ů侫 3、用户在起动过程中,偶尔有出现跳空气开关的现象?</p> <p style="text-indent:2em;"> 4、用户在使用软起动器时出现显示屏无显示或者是出现乱码,软起动器不工作?</p> <p style="text-indent:2em;"> 5、软起动器在起动时报故障,软起动器不工作,电机没有反应?</p> <p style="text-indent:2em;"> <strong>Ů侫变频器常见故障及解决方法?/strong> </p> <p style="text-indent:2em;"> 1、过流故?</p> <p style="text-indent:2em;"> 过电流故障一般可分为加速、减速和恒速过电流?</p> <p style="text-indent:2em;"> 主要原因是起动加速时间太短,负荷突然增加,逆变器输出短路,负荷分配不均,逆变器与电机容量不匹配,内部整流侧或逆变器侧元件损坏,电源缺相,输出断线,电机内部故障,接地故障。等?</p> <p style="text-indent:2em;"> 检修方法如下:故障检查时,先断开负载,检查变频器。如果在断开负载后仍然存在过电流故障,则意味着变频器的内部部件出现故障,需要进一步检查和维护?</p> <p style="text-indent:2em;">Ů侫 采取相应措施:延长加速时间,设计负荷分配,检查线路,防止干扰和机械振动,减少负荷突变?</p> <p style="text-indent:2em;"> 2、过压故?</p> <p style="text-indent:2em;"> 变频器过电压故障是指机组直流母线电压超过时变频器的过电压跳闸?/div><div id="w78j5f8nb5" class="meneame"><span class="disabled">< </span><span class="current">1</span> <a href="AD100909366_2.html">2</a></div> <div id="w78j5f8nb5" style="text-align: center;padding-top: 10px;"><img src="/images/code.jpg" alt="关注有惊?" /></div> <div id="w78j5f8nb5" class="news_bot_mes">中国工业电器网:此内容转载于合作媒体或互联网其它网站,中国工业电器网登载此文出于传递更多信息之目的,并不意味着赞同其观点或证实其描述!</br>新闻、技术文章投稿QQ?28246603 邮箱:news@cnelc.com</div> <h2 class="related">相关阅读</h2> <ul 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