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} }); function showliuyan(me, showtype){ if(showtype==0){ //$("#Content").val($("#Content").attr('placeholder')); Content= document.getElementById('PopMsgFrom').Content.getAttribute('placeholder'); document.getElementById('PopMsgFrom').Content.value=Content; } if(showtype==1){ // $("#Content").val($(me).text()); alert($(me).text()); document.getElementById('PopMsgFrom').Content.value=$(me).text(); } $(".fxp").css("display","flex"); } function close_popwin(){ $(".fxp").css("display","none"); // 关闭虚拟电话后的留言� $(".dhxj").css("display","none"); $(".dhxjbox").css("display", "none"); $(".dhxjbox2").css("display", "none"); return false; } </script>  <div class="cpjs"> <div class="cpjs_tab"> <div class="js_cpjj" style="border-bottom: 3px solid #1479d7; color: #1479d7;">产品介绍</div> <div class="js_cxd">创新炸�/div> <div class="js_xgfa">相关方案</div> <div class="js_xgzl">相关资料</div> <div class="js_yhpl">用户评论</div> <div class="js_gsdt">公司动�?/div> <div class="js_wsj">问商宵�/div> </div> <script> $(function(){ // 切换 $(".cpjs_tab a").click(function(){ $(".cpjs_tab a").css({"color":"#4F5862","border-bottom-color":"transparent"}); $(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p>结构特点</p><p>高效的永磁变频螺杆真空泵需要在螺杆主机效率、电机效率和控制技术三个方面做�?*，而DP系列真空泵在这三个方面都具有明显的技术优势、�/p><p>先进的设讠�</p><p>独特的运行模式设计，可有效避免运行至较高真空度时电机功率因素和效率下降、�/p><p>主机和电机采用同轴直连，减少了传动部件带来的能耗损失，故障点也随之减少、�/p><p>高效油分离系统，采用两级分离技术，减少润滑液流失保护环境、�/p><p>采用变频调速及强大的控制技术，通过流量请节，维持系统真空度恒定，减少能耗浪费、�/p><p>高真空能力，超过29.9inHg�?*真空�?极限压力0.5Torr)</p><p><br/></p><p>高效永磁同步电机:</p><p>永磁同步电机的励磁磁场由永磁提供，转子不需要励磁电流，提高了电机效率提高，与异步变频调速相比，任意转速点均节约电能，尤其在转速较低和负载的时候这种优势更为明显、�/p><p>·永磁同步变频调速电机的主磁场恒定，定子电流几乎全部为有功电流，启动电流小、�/p><p>永磁变频电机的功率和功率因数近似一条水平曲线，即使电机只有20%负荷时，永磁电机的力能指标仍为满负荷�?0%以上，这极大提高了在低负载情况下的电能使用效率和电网品质因数、�/p><p>由于使用了高性能的永磁材料磁场，使得永磁电机的气障磁场叫感应电机大为增强，永磁电机的结构简单，重量轻体积，体积约为普通异步电机尺寸的1/3</p><p>保证更低的温升。保护永磁体，电机寿命更长，永磁体可耐温180度、�/p><p>专用高效变频�?</p><p>专用于永磁同步电机驱动的高性能电流矢量变频器，可实现低速高转矩输出，具有良好的动态特性、超强的过载能力和超强的过热能力，使得变频器、电机和主机**的匹配。内置直流电抗器(30KW以上机组)。稳速精度高，调速范围广·低速转矩大，转矩脉动小。大余量降额设计。·宽电压输入范围、�/p><p><br/></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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