Sungrow SG250HX-US, Руководство пользователя

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9
LED color State Definition
Slow blink
once, fast
blink three
times
The inverter is performing PID recovery.
Red
On
A fault occurs and the device cannot connect to the
grid.
Twinkling
The Bluetooth connection is established, data commu-
nication in process, and a system fault occurs.
Gray
OFF
Both the AC and DC sides are powered down.
Voltage may still be present in AC side circuits after the indicator is off. Pay atten-
tion to the electricity safety during operating.
2.5 Circuit Diagram
The following figure shows the main circuit of the inverter.
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.
User Manual 2 Product Description