Atlas ATL12KW2897-22, User Manual, Page: 11 / 24

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3.7.2 Generator Startup and Stop settings
Bat charge current limit(A)
AC charge
Time 1
Time 2
Time 3
: :
: :
: :
Bat charge control
Debug
Charge
Discharge
Device info.
Basic
Advanced
Set
Use SOC % Use Bat V
Set
Stop AC charge SOC(%)
Stop AC charge Volt (V)
AC charge power(kW)
Depends on the Bat charge control setting, system will use either battery SOC or battery voltage to
judge if system need to start or stop the generator.
-When battery is discharged to cut-off settings
or there is force charge request from battery.
or when the battery voltage or SOC lower than Generator Charge start Volt/SOC settings,
3.8 AC Coupling Installation Connection
The inverter supports AC coupling connection with existing grid-interactive solar system. The existing
solar system is connected to the inverter's EPS port.
L1 L2 N
EPS GEN GRID
L1 L2 L1 L2
Utility Meter
Main Panel
Inverter Disconnect
Backup Panel
Connection for AC coupled solar system
PE
N
PE
L1 L2
N
PE
L1 L2
Existing Solar
System
CT
CT 2
CT 1
Kw. h
7 9 8 6 6
480r/kw. h 10A
Generator Start Conditions
Generator Stop Conditions
when battery voltage or SOC higher than Charge end Volt/SOC settings value.
When grid is off, the hybrid inverter will work as a power source for the grid interactive inverter to synchronize
and feed power to the micro-grid. The loads will be first supplied by solar power. If solar panels are generating
more power than load consumption, the excess solar power will be stored to the battery. When solar power
exceeds the sum of load power and max battery charging power, e.g. when battery is nearly full. The inverter will
signal the grid interactive inverter to reduce power via the frequency shifting power reduction mechanism, thus
to maintain the balance of generation and consumption of the microgrid system.
When grid is on, the EPS terminal is connected to grid terminal inside inverter by a passthrough relay. so the
hybrid inverter will bypass the interactive inverter AC to grid in this situation. The spec of the passthrough relay
is 200A.
When utility fails and
Debug
Charge
Discharge
Device info.
Basic
Advanced
Generator
Charge start Volt(V)
Charge end Volt(V)
Gen rated power(kW) Charge current limit(A)
Charge start SOC(%)
Charge end SOC(%)
Set