+
-
4.0~6.0
4.0
（
12
AWG
）
（
12~10AWG
）
.17.
.16.
5.
Installation
5.
Installation
Before connecting inverter, please make sure the PV array open circuit
voltage is within the limit of the inverter.
Before connection, please make sure the polarity of the output voltage of
PV array matches the
“
DC+
”
and
“
DC-
”
symbols.
Before connecting inverter, please make sure the PV array open circuit
voltage is within the limit of the inverter.
Figure 5.11 DC+ Connector
Figure 5.12 DC- Connector
Please use approved DC cable for PV system.
Cable type
Cross section
（
mm
²
）
Range
Industry generic PV cable
（
model:PV1
-
F
）
Recommended value
Figure 5.13 Disassemble the Connector Cap nut
Figure 5.14 Insert the Wire into the
Connector Cap nut and contact pin
Figure 5.15 Crimp the contact pin to the wire
Figure 5.16 Connector with Cap nut Screwed on
Figure 5.17 Multimeter measurement
Figure 5.18 Connect the DC
Connectors to the Inverter
The steps to assemble the DC connectors are listed as follows:
1. Strip off the DC wire for about 7mm, Disassemble the connector cap nut. (see Figure 5.13)
3. Crimp the contact pin to the wire using a proper wire crimper. (see Figure 5.15)
2. Insert the wire into the connector cap nut and contact pin. (see Figure 5.14)
4. Insert metal connector into top of connector, and tighten nut with torque 2.5-3 Nm
(see figure 5.16).
Crimping plier
5. Measure PV voltage of DC input with multimeter, verify DC input cable polar
(see figure 5.17), and ensure each string of PV voltage in range of inverter operation.
Connect DC connector with inverter until hearing a slight clicking sound indicates
connection succeed. (see figure 5.18)
WARNING:
If DC input wire reverses, please not operate DC switch, DC1and DC2
instantly to avoid inverter damage.. Damage caused by this reason isn't
covered by warranty.
Solution: Until reduced sun irradiance and PV voltage is below 0.5 A(mostly
in evening), then put DC switch in “off” position, remove “+”, “-” connectors to
reconnect wires.
5.3.2 Connect PV side of inverter
