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为了减少动力电缆辐射电磁干扰，尤其是变频装置馈电电缆。笔者在某工程中，采用了铜带铠装屏蔽电力电缆，从而降低了动力线生产的电磁干扰，该工程投产后取得了满意的效果。
不同类型的信号分别由不同电缆传输，信号电缆应按传输信号种类分层敖设，严禁用同一电缆的不同导线同时传送动力电源和信号，避免信号线与动力电缆靠行敖设，以减少电磁干扰。
3硬件滤波及软件抗如果措施
信号在接入计算机前，在信号线与地间并接电容，以减少共模干扰；在信号两较间加装滤波器可减少差模干扰。
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