11. Initial Setup
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Off-Grid (II)
PV energy supply priority setting:
1
st
Battery, 2
nd
Load
PV power will charge 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 allowed
under this mode. At the same time, the grid relay is connected in Inverter mode.
That means the transfer time from inverter mode to battery mode will be less than
15ms. Overload faults are avoided as grid can supply load when connected load is
over 3KW.
Battery charging source:
1.
PV or Grid: If there is remaining PV power after supporting the loads, it will
charge battery first. Only if PV power is not available, will grid charge battery.
2.
PV only: Only PV power is allowed to charge battery.
3.
None: Neither PV nor grid is allowed to charge the battery.
NOTE:
AC charging duration can be set up.
Load supply source:
When PV is available: 1
st
PV, 2
nd
Grid, 3
rd
Battery
PV will provide power to the load first. If power is insufficient, grid will provide
power to the load. If grid is not available at the time, battery power will back up.
