Sungrow SG250HX, Руководство пользователя

Страница: 18 / 109

8
2.3 Circuit Diagram
The MPPT is utilized for DC input to ensure the maximum power from the PV array at
different PV input conditions. The inversion circuit converts the DC power into AC power
and feeds the AC power into the utility grid through the AC terminal. The protection
circuit is equipped to ensure the safe operation of the device and personal safety.
The following figure shows the main circuit of the inverter.
F Fiig gu urre e 2 2--3 3 Circuit diagram
2.4 Function Description
The inverter is equipped with the following functions:
C Co on nvve errssiio on n ffu un nc cttiio on n
The inverter converts the DC current into grid-compatible AC current and feeds the AC
current into the grid.
D Da atta a sstto orra ag ge e
The inverter logs running information, error records, etc.
P Pa arra am me ette err c co on nffiig gu urra attiio on n
The inverter provides various settable parameters. Users can set parameters via the
App to meet the requirements and optimize the performance.
C Co om mm mu un niic ca attiio on n iin ntte errffa ac ce e
The inverter is designed with standard RS485 communication interfaces.
The standard RS485 communication interfaces are used to establish communication
connection with monitoring devices and upload monitoring data by using
communication cables.
After communication connection is established, users can view inverter information or
set inverter parameters through the iSolarCloud.
P Prro otte ec cttiio on n F Fu un nc cttiio on n
The protective functions are integrated in the inverter, including anti-island protection,
LVRT/ZVRT, DC reversed polarity protection, AC short circuit protection, leakage current
protection, DC overvoltage/overcurrent protection, etc.
P PIID D ffu un nc cttiio on n
After the PID function is enabled, the voltage to ground of all PV modules is greater than
0, that is, the PV module-to-ground voltage is a positive value.
2 Product Introduction User Manual