11. Initial Setup
30 www.sinetech.co.za
Load supply source:
When PV power is available: 1
st
PV, 2
nd
Battery, 3
rd
Grid
PV will provide power to the load first. If power is insufficient, battery power will back
up the load. Only after battery power has run out and stopped providing the load,
will Grid back up the load. At this stage, battery power is at low level and PV power
can only charge battery when “Allow to charge battery” is enabled. Only when battery
voltage is back to re-discharging point, will PV provide power to the load again.
When PV power is not available:
1.
1
st
Grid, 2
nd
Battery: Grid will provide power to the load first. If grid is not
available, battery will provide power backup.
2.
1
st
Battery, 2
nd
Grid: Battery will provide power to the load 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.