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The AC voltage overrange is the most common failure of the solar inverter connected with the PV grid system. This is because the grid voltage is not constant and it will change with the changing of the load and current. At the same time, the output voltage of the inverter will be affected by the grid voltage.
If the AC wire of the solar inverter is connected in a wrong way, the AC voltage overrange failure may be caused. If the phase wire and zero wire are connected wrongly, then the inverter A phase will show that the line voltage is 380V and the B, C will show that the phase voltage is 220V.
This is because the grid voltage is not constant and it will change with the changing of the load and current. At the same time, the output voltage of the inverter will be affected by the grid voltage. When the grid encounters abnormal situation, the inverter power supply shall be stopped to avoid more serious damage on the grid.
Severe over-voltage: The inverter has completely shut off as the voltage is past the threshold for extended periods of time Moderate over-voltage: The voltage is on the edge of the threshold and the inverter is turned off for a very short period only to turn back on; thus the spiky solar profile. What can you do to resolve this?
The AC voltage overrange is the most common failure of the solar inverter connected with the PV grid system. This is because the grid voltage is not constant and it will change with the
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