4.3 Electrical Connections
Solis-2.5K-2G can transfer the power available to the utility at any input DC voltage that is
within the range from 100Vdc to 500Vdc. The maximum input current is 10Adc. The rated
output voltage of Solis-2.5K-2G is 230Vac or 240Vac.
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.
3. Connect Solis-2.5K-2G to the solar panel DC Isolator.
a) Make sure the polarity of the output voltage from the solar panel (i.e. the input voltage
for Solis-2.5K-2G) matches the
“
DC+
”
and
“
DC-
”
symbols.
b) Attach the positive DC connector (refer to Figure 4.3) to the solar panel output positive
terminal. Attach the negative DC connector (refer to Figure 4.4) to the solar panel
output negative terminal.
Figure 4.3 DC+ Connector
Figure 4.4 DC- Connector
The steps to assemble the DC connectors are listed as follows:
i) Disassemble the connector coat (see Figure 4.5).
ii) Insert the wire into the bottom part of the connector coat as shown in Figure 4.6.
Figure 4.5 Disassemble the Connector Cap
Figure 4.6 Insert the Wire into the Connector Cap
ii) Attach the pin top to the wire as shown in Figure 4.7.
i
Figure 4.7 Attach the Pin Top to the wire
iv
on the bottom part of the connector (as shown in Figure 4.8).
) Insert the pin to the top part of the connector and screw the top part back
Figure 4.8 Connector with Cap Screwed on
.11.
.12.
4. Installation
4. Installation
Solis-2.5K-2G 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.
Table 4.1 Terminals
+
-
Positive terminals of DC input
Negative terminals of DC input
DC 1
DC 1 input terminals positive or negative
DC 2
DC 2 input terminals positive or negative
DC SWITCH
Switch of DC input terminals(optional)
COM
Equipment communication connect terminal
Rs485 communication connect terminal(optional)
RS 485
GRID
Equipment grid wires connect terminal
