Deye inverter FAQ

1. What does MPPT mean

Maximum Power Point tracking (MPPT). Photovoltaic cells are affected by factors such as ambient temperature and light intensity, and their output power will change accordingly. The photovoltaic inverter with MPPT maximum power tracking is to make full use of solar cells, real-time tracking of the highest voltage current value of the solar panel, so that it runs at the maximum power point to play the maximum effect of the solar panel.

2. What is Island protection

When the inverter is connected to the grid, the ATS port outputs 230Vac, which is used to cut off the power grounding neutral (N wire of the load port) through an external connection. When the inverter is disconnected from the power grid, the voltage of the ATS port is 0, and the grounding neutral connection remains unchanged.

3. What are the methods of single-phase group to prevent counter-current

The single-phase grid-connected inverter has anti-reverse flow function and only needs an external CT

4. How to change the self-test time

Go to the running parameter setting interface and adjust the value behind self-check

5. How to restore factory Settings

Enter the system parameter setting interface and set the factory data reset.

6. The inverter reports that the power grid voltage frequency is too high/too low/no power grid fault

The grid voltage/frequency exceeds the grid voltage/frequency value allowed by the inverter setting; Modify the power grid voltage/frequency range.

7. The inverter has no output power

Check whether the meter/limier function is enabled to check the active % setting; When the PV voltage and the grid voltage are normal, check whether the machine has turned on the anti-reverse function and the percentage of active power output.

8. There is a squeaking sound inside the single-phase machine

Poor inductance or resonance on the AC side; First check the software version to determine the upgrade to the anti-resonant version, if not, the inductor is not installed or the inductance is not enough.

9. What are the common reasons for affecting the power generation of grid-connected inverters

a. Dust b. Shadows c. attenuation d. String mismatch e. Line loss

10. How to determine whether the PV module can be connected to the inverter

The single component only needs to check whether the MPP current and short circuit current exceed the maximum short circuit current of the inverter.

11. How to adjust the output power of grid-connected inverter

Enter the operation parameter setting interface, adjust the ativeP% can adjust the output active power.