4.3 Electrical Connections
The electrical connection of the inverter must follow the steps listed below:
1. Switch the Solar Supply Main Switch (AC) OFF.
2. Switch the solar panel DC Isolator OFF.
The Inverter is designed for electrical connection without removing the cover. The meaning
of the symbols located at the bottom of the inverter are listed in Table 4.1.All electrical
installations must be in accordance with all local and national electrical codes .
.11.
.12.
4. Installation
4. Installation
Table 4.1 Terminals
+
-
Positive DC input terminal
Negative DC input terminal
DC 1
Positive or negative DC 1 input terminal
DC 2
Positive or negative DC 2 input terminal (for 2.5-5k models)
DC SWITCH
Switch of DC input terminals(optional)
COM
Communication connection equipment terminal (Optional)
GRID
Grid wires connection equipment terminal
3. Connect PV input of the Inverter.
Before connection, please make sure the polarity of the output voltage of PV array
matches the
“
DC+
”
and
“
DC-
”
symbols.
Maximum 500Voc for
Solis-1K-2G Solis-1.5K-2G Solis-2K-2G
Maximum 600Voc for
Solis-2.5K-2G Solis-3K-2G Solis-3.6K-2G
Solis-4K-2G Solis-4.6K-2G Solis-5K-2G
3. Carefully hang the inverter on the upper part of the wall mount bracket by fitting the
hooks into the slot of the bracket. Use M4
×
25 stainless steel screws and washers
at holes E and F (in Figure 4.2) to secure the mounting hooks to the rear of the inverter.
Figure 4.3 Wall Mount Bracket
A
B
C
D
Inverter
E(F)
Before connecting inverter, please make sure the PV array open circuit voltage is
within the limit of the inverter
Please don’t connect PV array positive or negative pole to the ground, it could
cause serious damages to the inverter
Figure 4.3 DC+ Connector
Figure 4.4 DC- Connector
Please use qualified DC cable for PV system.