9
03 Product Introduction
User Manual
V1.0-2023-10-30
Parallel System
WARNING
•
Off-grid parallel system is not supported. Do not parallel connect the back-up ports of the
inverters in the system.
• Consider factors like the length of the communication cable and plan the installation reasonably
when installing the system.
• Prepare the Ethernet cable and RJ45 connector for crimping by yourself if the delivered
communication cables cannot meet the demands. Do not crimp PIN1 and PIN2.
•
Ensure that the material, cross-sectional area, and length of the conductors of the AC cables
between the master and slave inverters for both on-grid and back-up ports, as well as the DC
cables between the battery and the inverter, are the same.
• In parallel scenarios, only the smart dongle Ezlink is supported for parallel networking. Only one
Ezlink is required in one parallel system. The inverter connecting to Ezlink and smart meter is
considered as the master inverter, while all the others are slave inverters. The slave inverters
should install the WiFi or LAN module delivered with the inverter.
1
2
4
5
8
10
9
3
6
6
ON-GRID
BACK-UP
BACK-UP
BACK-UP
ON-GRID
ON-GRID
7
11
Ensure correct
location
and direction
of CT.
Master
inverter
Slave
inverter 1
Slave
inverter n
n≤5
PV string
PV string
PV string
Ezlink
AC circuit breaker
AC circuit breaker
AC circuit breaker
Battery
breaker
Battery
breaker
Battery
breaker
Load breaker
Load breaker
Load breaker
Load breaker
Bypass
switch
Bypass
switch
ON-GRID load
BACK-UP load
BACK-UP load
BACK-UP load
RS485
Utility
meter
Utility
grid
distribution
board
Battery 1
Battery 2
Battery X
......
WiFi/LAN module
WiFi/LAN module
Smart
Meter