Sungrow SG320HX, Руководство пользователя

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• 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.
After communication connection is established, users can view inverter information or set in-
verter parameters through the iSolarCloud.
Protection Function
The protective functions are integrated in the inverter, including anti-island protection, LVRT,
DC reverse connection protection, AC short circuit protection, leakage current protection,
surge protection, etc.
Potential Induced Degradation (PID) (Optional)
The PID effect (Potential Induced Degradation) of PV modules will cause serious damage to
PV yield. Through enabling the Anti-PID function, the PID can be suppressed, and this func-
tion applies to the grid-connected operation of the inverter during the day or the reactive
power generation at night is enabled. Through enabling the PID recovery function, the ad-
verse effects caused by PID can be recovered, and this function only works when the DC
side of the inverter is voltage-free.
Anti-PID function and PID recovery function works differently when applied to P-type and N-
type panels.
User Manual 2 Product Description