Installation and Operating Instructions V01
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⑤
Check the grid voltage: check that the grid voltage at the point of connection of
the inverter is within the permitted range.
7.2 Mechanical check
Carry out the main mechanical checks to ensure the inverter is waterproof as follows:
①
Use sealing plugs for tight sealing of unused DC input connectors.
②
Make sure the cap nut on the unneeded RJ45 keystone socket has been correctly
tightened.
③
Make sure the AC connector has been installed correctly.
7.3 Start-up
After finishing the electrical and mechanical checks, switch on the AC circuit breaker
and DC-switch in turn. Ensure the correct safety setting has been selected for the
region. The inverter starts up automatically.
Usually, there are three states during operation.
Waiting: Only when the initial voltage of the strings is greater than the start-up DC
voltage, the inverter will start. Once the input voltage is out of the range from 180V
to 950V, the inverter will be in waiting state and cannot feed power into the grid.
Checking: When the initial voltage of the strings exceeds the start-up DC input
voltage, the inverter will check feeding conditions at once. If there is anything wrong
during checking, the inverter will switch to the “Fault” mode.
Normal: After checking, the inverter will switch to“Normal” state and feed power
into the grid.
During periods of low irradiation, the inverter may continuously startup and shut
down. This is due to insufficient power generated by the PV generator. If this fault
occurs often, contact the service.
Quick troubleshooting
If the inverter is in “Fault” mode, refer to chapter 11 “Troubleshooting”.
