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Off-Grid (III)
PV energy supply priority setting: 1
st
Load, 2
nd
Battery
PV power will provide power to load first and then charge battery. Feed-in to the
grid is not allowed under this mode. The grid relay is NOT connected in Inverter
mode. That means the transfer time from inverter mode to battery mode will be
about 15ms. If connected load is over rated output capacity of the inverter and
grid is available, this inverter will allow grid to provide power to the loads and PV
power to charge battery. Otherwise, this inverter will activate fault protection.
Battery charging source:
1.
PV or Grid: If there is remaining PV power after supporting the loads, it will
charge battery first. Only until PV power is not available, grid will charge battery.
2.
PV only: It is only allow PV power to charge battery.
3.
None: It is not allowed to charge battery no matter it’s PV power or grid.
NOTE: It’s allowed to set up AC charging duration.
Load supply source:
When PV power is available: 1
st
PV, 2
nd
Battery, 3
rd
Grid
PV power will provide power to the load first. If it’s not sufficient, battery power will
back up the load. Only after battery power is running, Grid will back up the load.
When PV power is not available:
1.
1
st
Grid, 2
nd
Battery: Grid will provide power to the load at first. If grid is not
available, battery power will provide power backup.
2.
1
st
Battery, 2
nd
Grid: Battery power will provide power to the load at first. If
battery power is running out, grid will back up the load.
NOTE: This option will become ineffective during AC charging time and the priority
will automatically become 1
st
Grid and 2
nd
Battery order. Otherwise, it will cause
battery damage.
