Lux Power Technology SNA5000WPV User Manual page 18

2.7.1 Generator system connection
The SNA series can use a generator for backup power during grid failures. When selecting a generator,
ensure it provides sufficient power and maintains a frequency with a Total Harmonic Distortion (THD)
of less than 3%. As a general guideline, the generator should be at least 1.5 times the inverter's output
to accommodate both load powering and battery charging. The table below lists the recommended
generator capacities for optimal performance.
Number of inverters in parallel
This SNA5K/6K product can work with a generator and includes a dedicated Gen port for generator
connection.
P1-485B
P2-485A
MPPT485/CT WIFI
P4-CANH
P5-CANL
Li-ion
CAN/RS485
NTC
Parallel BAT-
BAT+
OFF
ON
EPS Output
In≥150A
BATTERY
When properly wired and configured, the generator, if compatible with remote start, will start
automatically when the battery voltage / SOC is lower than the cut-off value or there is a charge
request from the BMS. When the generator is running, it will charge the batteries and excess AC power
will be diverted to the AC output (LOAD) to power loads.
14
1
2
3
4
Dry Port GEN
No2 COM2 No2 No1 COM1 Nc1
PVA PVB AC INPUT AC OUTPUT GEN
PV
In≥50A
Generator Capacity
OFF
In≥50A
ON
Power
N
L
Double interlock switch or
Dual Power Switch In≥50A
N L
User Manual
>10KW
>15KW
>20KW
25KW
Generator
N
L
PE
N
HOUSE Essential LOAD
L
PE
N
L
Grid