14
9
Product Specifications
c. If the conduction status of an item is inconsistent with that in the tables, the Backup Box is
damaged.
No.
Wiring Requirements
Detection Terminal
Circuit
Breake
r (QF)
Grid
Inverter
X4-1 & X4-2
COM-1 &
COM-2
X2-1 & X3-1
GRID-L1 &
INVERTER-L1
X3-3 & X3-8
INVERTER-L2
& INVERTER-N
X2-1 & X1-1
GRID-L1 &
LOAD-L
X3-3 & X1-2
INVERTER-L2
& LOAD-N
1
On
Power
off
Shutdown Connected
Disconnected Disconnected
Disconnected Disconnected
2
On
Power
on
Shutdown Disconnected Connected
Disconnected
Connected
Disconnected
3
On
Power
off
Off-grid
output
Connected
Disconnected Connected
Disconnected Connected
Three-Phase Backup Box
2. If the mains recovers but the inverter still works in off-grid state (LED1 and LED2 are steady
orange), contact the customer service personnel or dealer for repair.
3. If the off-grid mode is enabled when no Backup Box is connected, an alarm indicating that
the Backup Box is abnormal is reported when the AC power supply is disconnected. In this
case, the fault cannot be rectified. The fault is rectified only after the inverter and battery are
powered off.
4. If the Backup Box is used for the first time and is not used later, you must disable the off-
grid mode when the inverter is running properly. Otherwise, you need to power on the
inverter again and modify the settings.
5. If the single-phase Backup Box generates abnormal noises during repeated switching, check
whether the inverter AC terminal is reversely connected to the power grid AC terminal.
No.
Wiring Requirements
Detection Terminal
Circuit
Breaker
(QF)
Grid
Inverter
X4-1 & X4-2
COM-1 &
COM-2
X2-1 & X3-2
GRID-L &
INVERTER-L
X3-6 & X3-10
INVERTER-N
&
INVERTER-PE
X2-1 & X1-1
GRID-L &
LOAD-L
X3-6 & X1-
2
INVERTER-
N
& LOAD-
N
1
On
Power
off
Shutdown
Connected
Disconnected
Disconnected Disconnected
Connected
2
On
Power
on
Shutdown
Disconnected
Connected
Disconnected Connected
Connected
3
On
Power
off
Off-grid
output
Connected
Disconnected
Connected
Disconnected
Connected
Single-Phase Backup Box
