例如在某输送设备中，一台电机频繁出现轴承损坏，维修人员多次更换轴承但问题未解决，最终通过检测发现联轴器对中偏差较大，导致运行过程中产生附加载荷，使轴承长期处于高应力状态，

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在调整对中后轴承寿命恢复正常，这说明在处理机械问题时必须从系统角度分析。在电气方面，绕组绝缘老化是电机长期运行中不可避免的问题，尤其是在高温环境下，绝缘材料会加速老化，

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从而降低绝缘电阻，在某高温车间中，一台电机虽然运行正常，但绝缘电阻逐年下降，最终在一次启动过程中发生击穿，如果能够在绝缘下降初期进行处理，例如烘干或重新绝缘，就可以避免严重故障。在一些潮湿环境中，电机受潮也是常见问题，绝缘电阻下降会导致漏电甚至短路，因此在这类环境中应采取防潮措施，例如安装加热装置或加强密封结构。