Step 6: Use a multimeter to measure the DC input voltage and verify the polarity of the
DC input cable.
+
-
Figure 4.11 multi-meter measurement
Step 7: Connect the assembled DC terminal to the inverter as shown in the figure, and a
slight "click" will be heard, proving that the connection is correct.
Figure 4.12 connect to the inverter
Click
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.
4. Installation
User Manual
17
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