Growatt New Energy.CO.LTD
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2
）
Close AC and DC breaker and inverter will enter into standby mode.
3
）
When input voltage exceed 450V (inverter startup voltage can be set on LCD, minimum voltage
is 450V), the inverter will connect to the grid.
4
）
Grid-connected inverter will check if the current state meets all the conditions to connect to
the grid before it actually connects.
The power generation is automatic. The inverter will detect if DC input and AC grid meets all
conditions. When all conditions are met, it will enter into grid mode. When the grid is abnormal,
inverter will immediately disconnect from the utility grid, and immediately enter into the fault
state.
In this mode, inverter will convert the DC power into AC power and feed into the grid. Meanwhile,
inverter will output the power from the PV array in the MPPT (Maximum power point) method,
and grid mode is also called MPPT mode.
CAUTION
When the ambient temperature is too high, it is normal the inverter reduces the output power.
However, if this frequently happens, check the cooling surface of the inverter or place the inverter
in better ventilation conditions place. If the inverter fan is dirty, please clean the fan, if there is
problem with the inverter internal electrical, please seek help from professional services.
3.4.3 Faulty mode
When the PV power system failure, the inverter will immediately disconnect the AC contactor and
enters into the fault mode, so as to ensure the safety of the system. Inverter continuous monitors if
the fault is eliminated. The inverter will not enter into the grid mode until the fault is eliminated.
3.4.4 Permanent faulty mode
When the PV power system is in serious failure, the inverter will immediately disconnect the AC
contactor and enters into the Permanent fault mode, so as to ensure the safety of the system.
For example: inverter module failure etc. When inverter enter into permanent failure mode, do not
