Sungrow inverter unit voltage protection

Are Sungrow inverters compliant?

All Sungrow’s inverters are compliant with the standard AS/NZS 4777 related to grid protection requirements. Those standards dictate for example, that if the line voltage or frequency goes outside pre-determined parameters, the inverter must shut down and decouple from the grid. This also includes blackouts.

What if a Sungrow inverter fails?

If the fault is not caused by the foregoing reasons and still exists, contact Sungrow Service. Grid abnormal, the grid voltage or frequency is out of the permissible range, and the inverter cannot be connected to the grid normally. Generally, the inverter will be reconnected to the grid after the grid returns to normal.

Is there a manual for Sungrow Power Inverter?

The contents of the manual will be periodically updated or revised due to product development. There may be changes in the manual due to subsequent inverter editions. The latest manual can be acquired via visiting the website at

How does a Sungrow inverter work?

When the temperature reaches 50℃, inverter can keep the nominal power output. When the temperature is above 60℃, inverter enters into protection mode. P/Pn L1 = 2%Pn/℃... Sungrow’s inverter is equipped with insulation resistance monitoring function to detect the system insulation resistance in real time.