&nbsp; <p class="MsoNormal"> <b><span style="font-family:宋体;font-size:9pt;">成套远程测控终端安装在变频器附近时，怎么防止信号干扰？</span></b><span style="font-family:宋体;font-size:9pt;"></span> </p> <p class="MsoNormal"> <span style="font-family:宋体;font-size:9pt;">为防止和降低信号电磁干扰，建议采用以下措施：<span></span></span> </p> <p style="text-indent:-18pt;margin-left:18pt;" class="MsoNormal"> <span style="font-family:宋体;font-size:9pt;"><span>①<span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><span style="font-family:宋体;font-size:9pt;">信号线、串口线用屏蔽线缆或穿管，屏蔽层接大地；<span></span></span> </p> <p style="text-indent:-18pt;margin-left:18pt;" class="MsoNormal"> <span style="font-family:宋体;font-size:9pt;"><span>②<span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><span style="font-family:宋体;font-size:9pt;"><span>&nbsp;</span></span><span style="font-family:宋体;font-size:9pt;">箱体的接地螺栓接大地；<span></span></span> </p> <p style="text-indent:-18pt;margin-left:18pt;" class="MsoNormal"> <span style="font-family:宋体;font-size:9pt;"><span>③<span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><span style="font-family:宋体;font-size:9pt;"><span>&nbsp;</span></span><span style="font-family:宋体;font-size:9pt;">交流电源加隔离变压器；<span> </span></span> </p> <p style="text-indent:-18pt;margin-left:18pt;" class="MsoNormal"> <span style="font-family:宋体;font-size:9pt;"><span>④<span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><span style="font-family:宋体;font-size:9pt;"><span>&nbsp;</span></span><span style="font-family:宋体;font-size:9pt;">加串口隔离模块或模拟量隔离模块。<span></span></span> </p> <p class="MsoNormal"> <span style="font-family:宋体;font-size:9pt;"></span> </p> <p class="MsoNormal"> <span style="font-family:宋体;">（广州市永源智能科技有限公司）</span> </p>