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be supplied from grid.
• Thanks to the on-grid operation, the switch from battery
power, PV power and grid power is automatically and
seamless.
iii. When grid fails,
• When grid fails, the inverter will automatically disconnect
from grid and outputs power to the EPS port.
• When battery is discharged to the SOC lower threshold, the
inverter will stop working and wait for the grid to recovery or
there is sufficient power from PV panels to charge the battery.
• If grid fail is not so rare in your area, please do not set the
battery SOC lower threshold too low just in case.
iv. You can also:
• Set a schedule for the inverter to charge the battery using
cheap off-peak grid power.
• Specify the daily working periods of self-use for inverter.
*1: The inverter can be set not to feed power into the grid. But a
small amount of energy will still inevitably be fed into grid due to
unpredictable PV energy change and load on/off.
*2: Firmware update may be required to support this function.
For on-grid self-use operating mode, one can set the discharge
end SOC@Grid as low as the battery allows (10% or 20% for
example). Please refer to your local Soltaro battery technician
for minimum discharging end SOC.
4.3.2 Off Grid / Back-up Operating Mode*3
For system installed in area with a weak grid or even without grid,
the inverter should be working in off grid / back-up operating
mode:
i. When grid or diesel generator is available,
• The battery will be charged firstly from PV and secondly from
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