sol-ark 5K - Smart Load Configuration

April 21, 2021 32
o Smart Load (Gen Load)
▪ This mode utilizes the Gen input connection as an output
which only receives power when the battery is above a
user programmable threshold.
▪ The Gen input breaker in the user area of the system
becomes an output to high power loads such as a water
heater, irrigation pump, ac unit, pool pump.
▪ Smart Load OFF Batt
• Battery voltage at which the Gen load will stop
being powered
▪ Smart Load ON Batt
• Battery voltage at which the gen load will start being powered
▪ Note: If using Gen load for a water heater, it is recommended that only one leg (120V) be
connected to the bottom element. This significantly reduces the power consumption of the
water heater while retaining core functionality (it will heat water, only slower).
▪ Note: Gen Load is limited to 50A at 240V (Do not exceed!)
• Solar Watts is for on grid.
o System waits to turn on smart load until enough PV power is produced (when on grid).
• AC Coupling Settings (For Micro Inverter Input)
o To use the Gen input breaker as a micro inverter AC coupled input, check the “For Micro inverter Input”
box (this feature will also work with “Grid-Tied” Inverters)
▪ Maximum combined input to Sol-Ark (AC+DC)
• Best: 3kWAC + 5.5kWDC
• Good: 2kWAC + 6.5kWDC
• OK: 4kWAC + 3.5kWDC
• Poor: 5kWAC + 3kWDC
• Poor: 6kWAC + 2.5kWDC
o To use the LOAD breaker for AC coupling grid tied inverter(s)
▪ You must select “For Micro Inverter Input”
▪ The Gen Breaker is not used (even though the GEN breaker is not physically being used for this
mode, AC coupling on the LOAD breaker prevents the use of the GEN breaker)
▪ Wire as show in the preceding example diagram labeled “Load side AC coupling example”
▪ Note: some load side AC coupling installs will require a line side tap instead of the 50A breaker
shown in the example diagram
▪ Maximum combined input to Sol-Ark (AC+DC)
o Note: when AC coupling “For Micro Inverter Input must be selected”
▪ The meaning of Smart Load OFF Batt and Smart Load ON Batt change in this mode
• Smart Load OFF Batt: The SOC at which the AC coupled inverter(s) are shut down when
in off-grid mode
o 90% recommended
• Smart Load ON Batt: The SOC at which the AC coupled inverter(s) are turned on when in
off-grid mode
o 60%-80% recommended