Sungrow SG30CX, User Manual

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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 and communication
accessory port.
The standard RS485 communication interfaces are used to establish communication con-
nection with monitoring devices and upload monitoring data by using communication cables.
The communication accessory port is used to connect communication module manufactured
by SUNGROW, and upload monitoring data by means of wireless communication.
The inverter can be connected to communication devices via either of the two interfaces.
After communication connection is established, users can view inverter information or set in-
verter parameters through the iSolarCloud.
It is recommended to use the communication module from SUNGROW. Using a
device from other companies may lead to communication failure or other unex-
pected damage.
The inverter can provide export control but will require the use of a external smart meter.
The export control functionality has not been tested to AS/NZS 4777.2:2020.
Protection Function
The protective functions are integrated in the inverter, including anti-island protection, LVRT/
ZVRT, DC reversed polarity protection, AC short circuit protection, leakage current protec-
tion, DC overvoltage/overcurrent protection, etc.
PID recovery
The PID effect (Potential Induced Degradation) of PV modules will cause serious damage to
generated output and yield, which can be avoided or recovered by PID recovery function.
• For positive voltage scheme, after the PID is enabled, the voltage to ground of all PV
strings is greater than 0, and therefore the PV string-to-ground voltage is a positive value.
2 Product Description User Manual