4. Installation4. Installation
Negative terminal
Positive terminal
3. Pass the stripped DC cable through the nut and waterproof rubber ring.
4. Connect the wire part of the DC cable to the metal DC terminal and crimp it with a special
DC terminal crimping tool.
Negative terminal
Positive terminal
Squeeze
5. Insert the crimped DC cable into the DC terminal firmly, then insert the waterproof rubber
ring into the DC terminal and tighten the nut.
Tighten
After you hear a "click", pull gently to check for a firm engagement.
Click
Negative terminal
Positive terminal
6. Measure PV voltage of DC input with multimeter, verify DC input cable polarity.
7. Connect the wired DC terminal to the inverter as shown in the figure, and a slight
"click" is heard to prove the connection is correct.
+
-
CAUTION:
If DC inputs are accidently reversely connected or inverter is faulty or not
working properly, it is NOT allowed to turn off the DC switch. Otherwise it
may cause DC arc and damage the inverter or even lead to a fire disaster.
The correct actions are:
*Use a clip-on ammeter to measure the DC string current.
*If it is above 0.5A, please wait for the solar irradiance reduces until the
current decreases to below 0.5A.
*Only after the current is below 0.5A, you are allowed to turn off the DC
switches and disconnect the PV strings.
* In order to completely eliminate the possibility of failure, please disconnect
the PV strings after turning off the DC switch to aviod secondary failures due
to continuous PV energy on the next day.
Please note that any damages due to wrong operations are not covered in
the device warranty.
.14..13.
Figure 4.9
Figure 4.10
Figure 4.11
Figure 4.12
Figure 4.13
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