1. Check and tighten all terminals to prevent serious heating caused by loosening.
2. Conduct a comprehensive review and parameter measurement of the input (including output) terminals, rectifier modules, inverter modules, DC capacitors and fast-melting devices, and replace the devices in time if they are found to be burned out or the parameters change greatly.
3. Regularly (confirm the length of the cycle interval according to the practical environment) to comprehensively check and protect the inverter, and if necessary, the circuit board in the rectifier module, inverter module and control cabinet can be collapsed, checked, measured, dusted and tightened. Because the lower air inlet and upper air outlet of the inverter are often blocked due to dust accumulation or excessive dust accumulation, its own heat dissipation is high, and the ventilation volume is large, so after a certain period of operation, there is dust on the circuit board (due to static electricity), which must be cleaned and checked.
4. After the maintenance of the circuit board and busbar, the necessary anti-corrosion treatment should be carried out, the insulating paint should be painted, and the burrs of the busbar that have been partially discharged and arced must be removed and insulated. For the insulating column that has been insulated and broken, it must be cleared and carbonized or replaced.
The method of reducing the failure of the inverter and extending the service life According to the test, the service life of the inverter is reduced by half for every 10 °C increase in the operating ambient temperature. Therefore, in the daily operation, a reasonable maintenance cycle and system should be drawn up according to the environmental conditions and load characteristics of the practical operation of the inverter, and after each operation cycle, the inverter will be fully protected from collapse, viewing, and measuring, so that the failure danger can be found and dealt with in the early stage.
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