Step 5: If there is no more fault alarm, the parallel system is completely installed.
Step 6: Please switch on all breakers of Line wires in load side. This system will start to provide power to
the load.
Parallel in three phase
Step 1: Check the following requirements before commissioning:
Correct wire connection
Ensure all breakers in Line wires of load side are open and each Neutral wires of each unit are connected
together.
Step 2: Turn on all units and configure LCD program 23 as 3P1, 3P2 and 3P3 sequentially. Then shut down
all units.
Note: It’s necessary to turn off switch when setting LCD program. Otherwise, the setting can not be
programmed.
Step 3: Turn on all units sequentially. Please turn on HOST inverter first, then turn on the rest one by one.
Step 4: Switch on all AC breakers of Line wires in AC input. If AC connection is detected and three phases
are matched with unit setting, they will work normally. Otherwise, they will display warning 15/16 and will
not work in the line mode.
Step 5: If there is no more fault alarm, the system to support 3-phase equipment is completely installed.
Step 6: Please switch on all breakers of Line wires in load side. This system will start to provide power to
the load.
Note 1: If there’s only one inverter in L1-phase, the LCD will show as “HS”. If there is more than one
inverter in L1-phase, the LCD of the HOST inverter will show as “HS”, the rest of L1-phase inverters will
show as “3P1”.
Note 2: To avoid overload occurring, before turning on breakers in load side, it’s better to have whole
system in operation first.
Note 3: Transfer time for this operation exists. Power interruption may happen to critical devices, which
cannot bear transfer time.
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