Solar photovoltaic inverter inspection and maintenance steps

When the photovoltaic inverter is shut down, the shutdown operation on the LCD panel is first required, and then the inverter is controlled to shut down. After the circuit breaker outputting the AC output of the frequency converter stops rotating and the switch behind the frequency converter is turned off, the frequency converter will switch directly to the AC cabinet. After that, the two direct input circuit breakers in the inverter will rotate directly to the closed state, and then the front opening of the inverter will be cut off. If the inverter is set directly to the external power scale, the internal external power supply can also be cut off, and then the circuit breaker will be taken out of operation.

After confirming that the photovoltaic inverter is completely disconnected from the AC side, it will use its own multimeter network to check the inside of the AC side, that is, confirm that it does not have any points, then it will not reconnect, and then it can be directly connected to the bottom line, observe Check whether the inverter has a hanging place, observe whether there is deformation, check whether there is humidity above the environment, and check whether all air inlets are normal.

To start the photovoltaic inverter, first remove the ground wire, then close the transformer on the box and open it from the side. Then open the Xi’an Road of the inverter’s AC output directly to the switching stage. Then close a bus box until it starts. Then use the closed DC cabinet until the real input can start. Then turn on both DCs, wait about a minute, then turn on everything else in sequence and the inverter is ready to start.



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