Steps for inspection and maintenance of photovoltaic inverters

When the photovoltaic inverter is turned off, the first step is to perform a shutdown operation on the LCD panel, and then control the inverter to turn off. After the circuit breaker that outputs the AC output of the frequency converter stops rotating and the switch behind the frequency converter is closed, the frequency converter will directly switch to the AC cabinet. Afterwards, 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 and external power can also be cut off, and then the circuit breaker will exit operation. Today, the inverter manufacturer will provide a detailed introduction:
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 there are no points, and then it will not reconnect. It can then be directly connected to the bottom line, observe whether the inverter has a hanging ground, observe whether there is deformation, check whether there is humidity above the environment, and check whether all air intakes are normal.
To start the photovoltaic inverter, first remove the ground wire, then turn off the transformer on the box and open it from the side. Then turn on the Xi'an Road of the inverter AC output directly to the switch level. Then close a bus box until it starts. Then use the closed DC cabinet until the actual input can start. Then turn on two DCs, wait for about one minute, and then turn on all the other things one by one, and the inverter can start.