2 Product Description
7
13+
1+
13-
1-
2+
4+
2-
4-
5+
6+
PE
Input EMI
filter
DC switch
Input EMI
filter
PE
MPPT
circuit
1#
MPPT
circuit
2#
MPPT
circuit
3#
MPPT
circuit
4#
BUS+
BUS-
Three-
phase
inverter
circuit
LC
filter
RCD leakage
current
detection
Output
EMI
filter
Fuse Current hall
5-
6-
7+
8+
7-
8-
9+
10+
9-
11-
11+
12+
12-
14-
3+
3-
14+
10-
N
A
B
C
Figure 2-6 Schematic diagram of hopeSun 75KTL
13+
1+
13-
1-
2+
4+
2-
4-
5+
6+
PE
Input EMI
filter
DC switch
Input EMI
filter
PE
MPPT
circuit
1#
MPPT
circuit
2#
MPPT
circuit
3#
MPPT
circuit
4#
BUS+
BUS-
Three-
phase
inverter
circuit
LC
filter
RCD leakage
current
detection
Output
EMI
filter
PE
A
B
C
Fuse Current hall
5-
6-
7+
8+
7-
8-
9+
10+
9-
11-
11+
12+
12-
14-
3+
3-
14+
10-
Figure 2-7 Schematic diagram of hopeSun 80KTL-M
2.1.2 Operating mode
hopeSun three-phase string inverter has three working modes: standby mode, running mode, and
shutdown mode. The three mode switching conditions are shown in Figure 2-8.
Standby
mode
Running
mode
Shutdown
mode
Running mode to standby mode:
Insufficient illumination or DC
switch disconnection detected
Standby mode to running
mode:
The light is sufficient and the
system is fault free
A fault occurrence or shutdown
command was detected
Standby mode to shutdown mode:
A fault occurrence or shutdown
command was detected
Shutdown mode to
standby mode:
Detected that the fault has
been cleared or the
power-on command
Figure 2-8 hopeSun 50KTL/40KTL operating mode
