What are the steps for PV inverter inspection and maintenance?

When the photovoltaic inverter is turned off, the shutdown operation on the LCD panel is required first, and then the inverter is controlled to be turned off. After the circuit breaker outputting the AC output of the inverter stops rotating and the switch behind the inverter is closed, the inverter will directly switch 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 directly set to the external power scale, the internal external power can also be cut off, then the circuit breaker will be out of service.

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

To start the PV inverter, first remove the ground wire, then turn off the transformer on the box and turn it on from the side. Then turn on the Xian road of the inverter AC output directly to the switch stage. Then close a bus box until it starts. Then use a closed DC cabinet until the real input can start. Then turn on both DCs, wait about a minute, then turn on everything else in turn and the inverter will start.