硬件保护
<p><span style="font-family: "Microsoft YaHei"; font-size: 13.3333px; white-space: pre-wrap; caret-color: rgb(30, 111, 255); background-color: rgb(255, 255, 255);">这是最常见的故障。变频器三相输出UVW 相有短路现象，外部用电设备干扰，IGBT，</span><br/><span style="font-family: "Microsoft YaHei"; font-size: 13.3333px; white-space: pre-wrap; caret-color: rgb(30, 111, 255); background-color: rgb(255, 255, 255);">IPM 模块损坏。</span></p>
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