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LED Color state Definition
Red
ON
A system fault has occurred.
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 when operating.
2.5 PV Energy Storage System (PV ESS)
When designing the system, ensure that the operating ranges of all devices that
are connected to the inverter meet the requirements of the inverter.
2.5.1 PV ESS Introduction
By directly connecting a battery module to the inverter, the conventional PV system can be
upgraded to be an Energy Storage System (ESS).
The system is capable of operating off-grid to ensure an emergency power supply for pro-
tected loads in the event of a grid interruption or blackout, which may be caused by:
• islanding;
• under-voltage;
• under-frequency or over-frequency.
• Under any connection, either grid-connection or off-grid application, please be
sure that the potential voltage between N and PE line is not higher than 30V,
otherwise, inverter will stop generating power.
• The system is not suitable for supplying life-sustaining medical devices. It can-
not guarantee backup power in all circumstances.
User Manual 2 Product Description
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