三菱空气开关NF32-SW 20A 2P

三菱空气开关NF32-SW  20A  2P

三菱空气开关NF32-SW  20A  2P

三菱空气开关NF32-SW  20A  2P

上海持承提供变频器维修的经验

一、通过目测观察，可以看出线路板上的元件有无烧糊迹象，主电路储能电容器有无

溅液、鼓**、变形，整流模块、逆变模块有无裂纹，器件端子连接处有无打火烧灼痕

迹等;晃动变频器箱体，听听有无异响，或有无损坏的器件残留物从箱体内倒出;闻一下

有无焦糊味，确定发出焦糊味的电路部位;对于电容漏电、模块击穿炸毁等故障，如冒

了烧黑打火,变频器损坏的可能性就很大，意味着变频器内部主器件被烧坏。

二、利用人的嗅觉，根据变频器的气味也能判断故障。如过热、短路、击穿故障，则

有可能闻到烧焦味，火烟味和塑料、橡胶、油漆等受热挥发的气味。

三、当变频器发生故障后,检修人员和医生看病一样，首先要了解详细的“病情”。即

向设备操作人员或用户了解变频器使用情况、变频器的病历和故障发生的全过程。

四、接手送修故障变频器，首先要和送修用户进行适当的交流,掌握设备使用情况

和故障发生原因，便于有的放矢检修故障，降低故障返修率，广州科誉认为应有这几

方面的交流：(1)设备损坏原因（2）设备的供电情况，(3)负荷情况，(4)设备有无故障维修经历，(5)设备的

使用环境情况。

甲南气动阀库存齐全：

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