- 11 -
（
2
）
Unscrew the nut of the AC cover, open the sealing ring and transfer the cable
through the nut hole, the sealing ring and the insulator successively, as
shown in figure 4.3-1;
（
3
）
Insert the bare wire into the AC terminal and press it with the tool, such as
figure 4.3-2
（
4
）
Connect the pressed terminals to the corresponding holes of the inverter, and
tighten with a screwdriver. Among them, BACK-UP connect with load breaker,
ON-GRID connected grid breaker, as shown in figure 4.3-3;
（
5
）
Use pan head screw in the attached bag to lock AC protective cover, and then
tighten the nut on protective cover. The installation instructions are as shown in
figure 4.3-1.
Figure 4.3-1
4.5 Communication Interface
The inverter is equipped with 3 RS-485 interfaces, one is used for smart meter
communication, and the other two backup for subsequent upgrade function. At the
same time, the inverter is equipped with a USB interface for LCD program upgrade.
F
Figure 4.5-1 Communication Interface
