10
3.4 Electrical connection
Under the condition of the meet the installation conditions, can carry on
electrical connecting operation. Please ensure electrical connection’s air-switch and
cable model can meet system demands, specific selection model sheet are as follows:
Diagram 3-4 Air-switch and cable model selection
Air-switch selection
（
C
）
Cable selection
（
AWG
）
Model No.
PV
AC
BAT
Load1
Load2
PV
AC
BAT
Load1
Load2
JNF1KLF-A/24V
25
10
40
6
6
10
15
7
16
16
JNF1K5LF-A/24V
25
16
63
10
10
10
13
6
15
15
JNF2KLF-A/24V
25
16
80
16
16
10
13
5
13
13
JNF3KLF-A/48V
50
25
63
16
16
8
10
6
13
13
JNF4KLF-A/48V
63
32
80
20
20
6
9
5
12
12
JNF5KLF-A/48V
63
40
100
25
25
6
7
4
10
10
Above diagram, the selection of C shows normal type auto breaker ,after C Digital
said over rated current; cable selection in AWG American Standard refers to the
diameter of the cable wire
.
3.4.1 PV Input Connection
Step 1
: Do the following inspections before PV side terminal connecting:
（
1
）
Please make sure system’s DC air-switch is in off state, before connecting
with PV array.
（
2
）
Please ensure PV array’s polarity be matched with PV connectors’ polarity,
to avoid inverter & controller damage.
（
3
）
To ensure PV array’s max open-circuit voltage must less than inverter &
controller’s max allowable input voltage.
Step 2
: To make PV connectors and cable connecting of PV input side, please
according to following steps:
