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2.6 PV Energy Storage System (PV ESS)
2.6.1 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.
figure 2-3 PV Energy Storage System (PV ESS)
table 2-2 System Compositions
Item
Description Remark
A
PV strings
Compatible with monocrystalline silicon, polycrys-
talline silicon, and thin-film without grounding.
B Inverter SH5.0RT / SH6.0RT / SH8.0RT / SH10RT
C
Three-phase Smart
Energy Meter
Measures the export power and communicates
with the inverter via the RS485 port.
D
Utility grid Grid grounding system types: TT, TN
E
Battery (optional) A Li-ion battery
2 Product Description User Manual
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