2 Product Description User Manual
2.6 Circuit Diagram
The following figure shows the main circuit of the inverter.
figure 2-4 Circuit Diagram
• The DC SPD provides a discharge circuit for the DC side overvoltage to prevent it from
damaging the internal circuits of the inverter.
• EMI filters can filter out the electromagnetic interference inside the inverter to ensure that
the inverter meets the requirements of electromagnetic compatibility standards.
• The MPPT is used to ensure a maximum power from PV arrays at different PV input con
ditions.
• The Inverter Circuit converts the DC power into grid-compliant AC power and feeds it into
the grid.
•
The AC filter filters the output AC component of high frequency to ensure that the output
current meets the grid requirements.
•
The AC relay isolates the AC output of the inverter from the grid, making the inverter safe
from the grid in case of inverter failure or grid failure.
•
The AC SPD provides a discharge circuit for the AC side overvoltage to prevent it from
damaging the internal circuits of the inverter.
DANGER
If the lightning level exceeds the protection level of the product, surge protection and
overvoltage protection may fail, resulting in electric shock and fatal injury!
2.7 Function Description
The inverter is equipped with the following functions:
Conversion Function
The inverter converts the DC current into grid-compatible AC current and feeds the AC current
into the grid.
Data Storage
The inverter logs running information, error records, etc.
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