We recommend installing an AC switch between the inverter outlet and the u�lity grid, the specs
of the AC switchis determined by the load capacity. The AC switch we recommend to connect to
the inverter output refer to Table 5.2.
U
V
L1(L)
Solar panels
Load
Distribution Box
Limiter
Control signal
L1(K)
L2(L)
L2(K)
L3(L)
L3(K)
L1
L2
L3
N
W
N
Control signal
- 20 -
7.2 Connect the SUN limiter to inverter
The SUN limiter will measure the voltage and current of three phases separately, and this manual
only introduces the installa�on steps of one phase, the other two phases are the same. The specific
installa�on steps are as follows:
Pic 7.2 Wiring diagram
(1) Connect SUN limiter to the grid. Connected to the grid is to measure the voltage of grid. Before
connect to the grid, please turn off the switch to avoid the risk of electric shock. Choose one wire
from the bo�om of the three-phase DC switch. (any phase of U,V,W) to connect with L1 terminal,
then �ghten the line with a screwdriver.
(2) Connect SUN limiter to clamp senor. Clamp senor can measure the current of the AC side, it
should be connected to the front side of the load (domes�c appliance ect.) to achieve this func�on.
Only when the SUN limiter collects the voltage and current of the same phase can it judge the
power of the phase. So the clamp senor should be connected to the same phase as the before.
Open the side buckle of the clamp senor, then clamp the senor to the AC line on the DC switch,
the arrow direc�on on the senor should towards that of the load. The clamp senor has two lines
(shown as below), and the white line corresponds to K terminal, black line corresponds to L
terminal. Connect the white line to the L1(L) and L1(K) terminal refer to the line mark of the SUN
limiter and �ghten the line with screwdriver. This is the whole installa�on process of one phase.
