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PV will charge the battery first. After battery is fully charged, if there is remaining PV power
left, it will provide power to the load. Feed-in to the grid is not available under this mode. At
the same time, the Grid to Load relay is connected in Inverter mode. That means the transfer
time from inverter mode to battery mode will be less than 15ms. This will avoid any overload
fault because grid input can supply loads when the connected loads are rated over the output
capacity of the inverter. (Bypass mode)
Battery charging source:
1. PV or AC Input- Utilizes Generator or AC Coupled Solar for Charging Support
2. PV Only
3. None: Do not select this mode in Off-Grid setting as the ESS will need some generation source.
NOTE: AC charging duration is allowed in set-up.
Load supply source:
1. PV
2. Battery
3. AC
PV will provide power to the loads first. If PV is not sufficient to support the loads the
batteries will support the loads. If the battery reaches LBCO or cannot support the loads, a
generator can be utilized to provide additional power to support loads and charge battery.
When PV power is unavailable (nighttime), battery will supply the loads first. If the battery
reached LBCO, the system will power down until an energy source returns and begins
supplying the inverter.
Option 3: Off-Grid (III)
PV Energy Supply Priority Setting: PV will supply energy in the following order:
1. Loads
2. Battery
PV will provide power to the loads first and any extra generation will charge the battery.
Feed-in to the grid is not available under this mode. At the same time, the grid relay is NOT
connected in Inverter mode. That means the transfer time from inverter mode to battery
mode will be less than 15ms. If connected loads are over the rating of the output capacity of
the inverter and AC input is available, the inverter will allow AC to provide power to the loads
and PV will only charge the battery. Otherwise, this inverter will activate a fault protection.
Battery charging source:
1. PV or AC Input- Utilizes Generator or AC Coupled Solar for Charging Support
2. PV Only
3. None: Do not select this mode in Off-Grid setting as the ESS will need some generation source.
NOTE: AC charging duration is allowed in set-up
Load supply source (PV is available): Load will be supported in the following order
1. PV
2. Battery
3. AC
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