常见问题 - Zhejiang Hyxi Technology Co., Ltd.

When such failures occur, they are more or less due to internal failures within the components. It is recommended to measure the open-circuit voltage of a single component, compare it with the normal component open-circuit voltage, and replace the faulty component.

Situation 1: There is voltage but no current: First, check if the zero-current string has voltage on the APP. If there is voltage, use a clamp ammeter to verify if there is actually no current flowing. If true zero current is detected, ensure that the strings for the inverter and PV side terminals are properly tightened. Use the multimeter buzzer to test the corresponding string and fuse. Replace the faulty fuse.

Situation 2: No voltage and no current: Start by confirming that the faulty string has no voltage on the APP. Use a multimeter's DC voltage mode to test the open circuit voltage of the faulty string and the MC4 connector on the PV side of the inverter. If there is no open circuit voltage, check the MC4 terminal on the component side of the string to ensure there is no open circuit voltage either. If necessary, replace the faulty cable.

1. Please confirm whether the port is connected to photovoltaic modules

2. If connected, please confirm whether the port wiring is normal.

1. If the input current is too high, please ensure that the input photovoltaic panel voltage is not higher than the maximum input voltage of the microinverter (component current> the maximum input current of the microinverter, the microinverter will not be damaged, but it will affect the power generation)

2. If the module current is within the normal range, please contact the dealer.

1. If the input DC current is too high, please ensure that the input photovoltaic panel current is not higher than the maximum input current of the microinverter

2. If the module current is within the normal range for three days and the microinverter does not work, please contact the dealer or equipment manufacturer.

1. If it occurs occasionally, it may be abnormal in the power grid for a short time, and when the power grid is normal, it will resume work without manual intervention

2. If it occurs frequently, please confirm whether the grid voltage is normal, if the whole station alarms, please contact the local power bureau to solve it or adjust the instantaneous fluctuation limit of the grid voltage through the monitoring platform after obtaining the consent of the power bureau.

1. Check for any faults in the machine, as certain issues may lead to low power generation.

2. Overvoltage or load reduction could be affecting the power generation process.

3. Examine the components for any problems that might be impacting their efficiency.

4. Ensure that the power grid transmission lines are of adequate capacity and not causing power losses.

5. Evaluate the installation environment and orientation of the equipment to ensure optimal sunlight exposure.

6. Verify if there is any discrepancy between the inverter's displayed power generation and the readings on the meter.

7. Check for any power-limiting settings that might be restricting the power generation capacity.

Solution

Fault troubleshooting

[String & Hybrid inverter] The open circuit voltage of the field component is 900V under normal conditions, but there are two strings of measured open circuit voltage of about 500 on site, and it continues to drop significantly, and there is no occlus

[String & Hybrid inverter] How to handle no current?

[microinverter] How to deal with PV-1 &PV-2 port wiring abnormality?

[microinverter] How to resolve the issue of overcurrent in the device branch?

[microinverter] How to deal with hardware overcurrent on the original side of the device branch?

[microinverter] How to deal with excessive instantaneous fluctuations in grid voltage?

[microinverter]Under the same operating environment, if the power generation is lower compared to surrounding inverters, there could be several possible reasons: