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Grid-tie with backup (III):
PV energy supply priority setting: 1
st
Load, 2
nd
Grid and 3
rd
Battery
PV power will provide power to the load first. If there is more PV power available, it
will feed-in to the grid. If feed-in power reaches max. feed-in power setting, the
remaining power will charge battery.
NOTE: The max. feed-in grid power setting is available in parameter setting.
Please refer to software manual.
Battery charging source:
1.
PV and Grid: It’s allowed to charge battery from PV power first. If it’s not sufficient,
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.
Load supply source:
When PV power is available:
1.
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
provide power to the load. When battery power is running out or not available, grid
will back up the load.
2.
1
st
PV, 2
nd
Grid, 3
rd
Battery
PV power will provide power to the load first. If it’s not sufficient, grid will provide
power to the load. If grid is not available at the same time, battery power will back
up.
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
