Sungrow SG285HX, Руководство пользователя

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figure 2-4 Circuit Diagram
• DC switches can safely disconnect the PV input when necessary to ensure the safe op-
eration of the inverter and the safety of personnel.
• The DC SPD provides a discharge circuit for the DC side over-voltage power 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 utilized for DC input to ensure the maximum power from the PV array at dif-
ferent PV input conditions.
• 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 over-voltage power to prevent it
from damaging the internal circuits of the inverter.
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 cur-
rent into the grid.
Data Storage
The inverter logs running information, error records, etc.
Parameter Configuration
The inverter provides various settable parameters. Users can set parameters via the App to
meet the requirements and optimize the performance.
Communication Interface
The inverter is designed with standard RS485 communication interfaces.
The standard RS485 communication interfaces are used to establish communication con-
nection with monitoring devices and upload monitoring data by using communication cables.
User Manual 2 Product Description