Alpha ESS SMILE-G3 Series Quick Installation Manual

QUICK INSTALLATION GUIDE
System Wiring and Commissioning for SMILE-G3 Single Phase Inverters Operation in Parallel
WARNING: Inverters that do not follow the same SN encoding rules have hardware differences. For example, inverters of SN ALD00XXXXXXXX
and ALD08XXXXXXXX cannot operate in parallel. Please check the 4th and 5th digits of the inverters' SN.
NOTICE: Measurement unit at the feed-in point when inverters operate in parallel should use the meter type DTSU666-3*230V 250A/50mA
(with CT). The CT solution for measurement unit at the feed-in point is only suitable for single inverter operating.
Note:
• Cann't connect all batteries together. The battery cluster connecting the each inverter must connect together.
• The number of batteries connected to each inverter should be same.
• The backup connection ports of SMILE-G3 single phase inverter must be connected parallel.
• The grid connection ports (symbolled with "AC") of SMILE-G3 single phase inverter must be connected parallel.
• All batteries must be of the same type.
• The number of parallel battery (for example, SMILE-G3-BAT-10.1P, SMILE-G3-BAT-8.2P) connected to each inverter is max. 6.
• The number of series battery (for example, SMILE-G3-BAT-3.8S, SMILE-G3-BAT-4.0S) connected to each inverter is max. 4.
• The number of inverters operation in parallel is max. 3.
• Each inverter operation in parallel must connected with PV modules.
• Each inverter operation in parallel must connected with battery.
• Each inverter should have the same PV installed capacity. Otherwise it will cause the battery SOC difference between the battery clusters.
01
SCOPE OF DELIVERY
PARA board COM cover
PARA COM 3m cables
02
AC WIRING TO GRID AND BACKUP COMBINER CABINET
Wiring sequence
From
1 Mains grid
2 Grid combiner cabinet
3 Grid combiner cabinet
4 Loads of backup side
5 Backup combiner cabinet
6 Backup combiner cabinet
*Depending on the inverter type and quantity and whether enabling the function "Charge Batteries from Grid".
03
UPGRADE FIRMWARE OF THE INVERTERS
Please comfirm the following connection
3.1. BAT power connection and grounding connection between the batteries connected to each inverter have finished.
3.2. BMS communication connection between the batteries connected to each inverter have finished.
3.3. BAT power connection and grounding connection between the inverter and the first battery (directly below the
inverter) have finished.
3.4. BMS communication connection between the inverter and the first battery (directly below the inverter) have finished.
3.5. Select one inverter which you want to set as host inverter later, finish meter communication connection between this
inverter and meter, finish meter power supply connection between the meter and mains grid.
3.6. Please finish PV arrays connection to the inverters,
refer to inverter quick installation guide chapter 4.4.
Labels for PARA COM
M3×10 Screws
cables
Recommended Cable type* To
Three-core (L, N and PE)
Grid combiner cabinet
outdoor copper cable, 25~35 mm 2
Three-core (L, N and PE) Grid connection port of
outdoor copper cable, 6~10 mm the host inverter
2
Three-core (L, N and PE) Grid connection port of
outdoor copper cable, 6~10 mm 2 the follow inverter
Three-core (L, N and PE)
Backup combiner cabinet
outdoor copper cable, 16~35 mm
2
Three-core (L, N and PE) Backup connection port of
outdoor copper cable, 6~10 mm the host inverter
2
Three-core (L, N and PE) Backup connection port of
outdoor copper cable, 6~10 mm
2 the follow inverter
3.7. Wiring grid connector plugs, then insert the grid connector plugs into the sockets for the grid connection. When doing
so, make sure to align the key on the grid socket with the keyway on the grid connector plug.
412-10017-01
Click
1
Electrical connection between grid connectors of the inverters and grid combiner cabinet have finished.
3.8. Wiring backup connector plugs, electrical connection between backup connector plugs of the inverters and backup
combiner cabinet have finished.
Backup disconnection between each inverter and backup combiner cabinet, at this moment only switching off the
backup circuit breakers are not enough yet, please must unplug the backup connector plug from the backup
connector socket of each inverter.
3.9. Mount the PARA boards to the inverters operation in parallel, then do communication connections between these
inverters, refer to the relative system wiring diagram of parallel installation.
a. Disassemble the communication cover
1
3
TX10×150mm
0.6-0.7Nm
b. Plug in the PARA board
c.
Take out the communication cables. Unscrew the swivel nut, remove the sealing ring and the sealing
plugs. Pass the PARA COM cables through the swivel nut, cable gland body and the COM cover.
1
2
2
01
2
4
2
2
1
02