Epever UP2000-HM6021 - Page 32

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Scenario A: Both PV and utility are not available.
（A）
PV 
Utility

Regardless of the input and output sources, the working mode is as follows.
Before the battery voltage drops to the LVD
point, the battery supplies the load.
Scenario B: PV is available, but the utility is not available.
（B）
PV 
Utility

Regardless of the input and output sources, the working mode is as follows.
Scenario C: Both PV and utility are available.
（C-1）
PV 
Utility

Input: Solar only
Output: Inverter Priority
❶ When P
PV
> P
Load
, PV charges the
battery and supplies extra power to the
load.
❷ When P
PV
≤ P
Load
, PV stops charging
the battery. Instead, it supplies the load
together with the battery.
❶ When P
PV
> P
Load
, PV charges the
battery and supplies extra power to the
load.
❷ When P
PV
≤ P
Load
, PV stops charging
the battery. Instead, it supplies the load
together with the battery.
❸ When V
Battery
≤ V
LVD
, battery stops
supplying power to the load, only PV
charges the battery.
❸ When V
Battery
≤ V
LVD
, battery stops
supplying power to the load. The utility
supplies the load, and PV charges the
battery.