Allow to charge battery: This option is automatically determined by setting in
“Charging source”. It’s not allowed to modify here. When “NONE” is selected in
charging source section, this option becomes unchecked as grey text.
Allow AC to charge battery: This option is automatically determined by setting in
”Charging source”. It’s not allowed to modify here. When “Grid and PV” or “Grid or
PV” is selected in charging source section, this option is default selected. Under Grid-
tie mode, this option is invalid.
Allow to feed-in to the Grid: This option is only valid under Grid-tie and Grid-tie with
backup modes. Users can decide if this inverter can feed-in to the grid.
Allow battery to discharge when PV is available: This option is automatically
determined by setting in “Load supply source (PV is available)”. When “Battery” is
higher priority than “Grid” in Load supply source (PV is available), this option is
default selected. Under Grid-tie, this option is invalid.
Allow battery to discharge when PV is unavailable: This option is automatically
determined by setting in “Load supply source (PV is unavailable)”. When “Battery” is
higher priority than “Grid” in Load supply source (PV is unavailable), this option is
default selected. Under Grid-tie mode, this option is invalid.
Allow battery to feed-in to the Grid when PV is available: This option is only valid in
Grid-tie with backup II or Grid-tie with backup III modes.
Allow battery to feed-in to the Grid when PV is unavailable: This option is only valid
in all options of Grid-tie with backup mode.
Grid-tie with backup
·
Grid-tie with backup (I) :
PV energy supply priority setting:
PV power will charge battery first, then provide power to the load. If there is any
remaining power left, it will feed-in to the grid.
Battery charging source:
1. PV and Grid (Default)
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 from PV power or grid.
Load supply source:
When PV power is available: 1st PV, 2nd Grid, 3rd Battery
If battery is not fully charged, PV power will charge battery first. And remaining PV
power will provide power to the load. 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.
1st Battery, 2nd Load and 3rd Grid.
When PV power is not available:
1. 1st Grid, 2nd Battery (Default)
Grid will provide power to the load at first. If grid is not available, battery power will
provide power backup.
2. 1st Battery, 2nd 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 1st Grid and 2nd Battery order. Otherwise, it will cause
battery damage.
Figure 14.3
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