03 Product Introduction
User Manual V1.0-2023-10-30
6
WARNING
• The PV system is not suitable to connect equipment that relies on a stable power supply, such
as medical equipment to sustain life. Ensure that no personal injury is occurred when the system
is disconnected.
•
Avoid loads with high starting current like high-power water pumps in the PV system. Otherwise,
the off-grid output may fail due to excessive instantaneous power.
•
BACK UP function is not recommended if the PV system is not configured with batteries.
• The Back-UP port does not support connecting autotransformer or isolation transformer.
•
When connecting three-phase loads to the BACK-UP port, only three-phase loads with N-wire
are supported. It is not supported to connect loads without N-wire.
• Factors such as: temperature, humidity, weather conditions, etc. may limit the battery's current
and affect its load.
• The inverter supports UPS, and the switching time is less than 10ms. Please make sure that the
BACK-UP load capacity is less than the nominal power of the inverter.
Otherwise, it may cause
the UPS function to fail when the power grid is cut off.
• When single overload protection occurs, the inverter can restart automatically; however, the
restarting time will be extended if it happens several times. For a faster restarting, try it via WE
Mate App.
•
Normal household loads can be supported when the inverter is in back-up mode. Accepted loads
as below:
•
Inductive load: Air conditioning with specifications of 1.5 horsepower or less.
•
Capacitive loads: total power ≤ 0.6 times of the inverter’s rated output power.
3.2 Application Scenarios
Supported Grid Types
For the grid type with neutral wire, the voltage between the neutral wire and the ground must be less
than 10V.
Inverter
Inverter
Inverter
Inverter
L1
L2
L3
N
PE
PE
TN-S
L1
L2
L3
PEN
PE
TN-C
L1
L2
L3
N
PE
PE
TN-C-S
L1
L2
L3
N
PE
TT