ZJSHUYI Classic case of inverter maintenance failure.www.shuyitop.com; ...

Foreword: Inverter repairers must keep in mind that the inverter module and the drive circuit are strongly related to failures. When the inverter module bursts and damages, the drive circuit is bound to be damaged by impact. The damage of the inverter module may also be caused by the failure of the drive circuit. Therefore, whether it is a failure of the drive circuit or the inverter output circuit, it must be The inverter output circuit and the drive circuit are thoroughly inspected together. The power-on test of the main circuit must be carried out under the premise that the drive circuit is normal and can output six excitation pulses normally. Inverter power failure A 132KW inverter has a black screen fault. Part of the wire drawing machine stopped in the wire drawing workshop, and restarted production after half a month. As a result, the inverter went black after being powered on. It was judged that the switching power supply was faulty on the spot. The inverter was removed, and the driver board was tested separately. After the normal power failure, the screen goes black, which eliminates the possibility of short circuit of the load. It is not possible to replace the 3844. The test load is normal. The power circuit components are all removed and no abnormality is found. Now, (the original is 35 volts, 47 microfarads,) replaced a 100 microfarads 50 volts capacitor, everything is normal after power-on. It is estimated that the capacity of the power supply filter capacitor is not enough, causing the 3844 to not start. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #inverter #frequencydrive #ACvfd #frequencyinverter #ZJSHUYI #SHUYITOP #variablefrequencydrive #threephaseacinverter #variablefrequencyinverter #3phaseinverter#achotsalefrequencyinverter #highvoltageacinverter