User Manual
4 Installation Guide
19
4.4.4 Input wiring and connections
High voltage is present inside the device!
Follow all the warning signs in the device.
Do not use ordinary ammeter to measure the DC voltage before
cable connection. An ammeter with withstanding voltage of 1500V is
recommended. Serious consequences may follow if otherwise.
Respect all the safety instructions in this manual and other
documents.
Incorrect cable connection may cause damages to the PV cells, the
PVS and inverter. Respect the following instructions during cable
connection:
Connect by strictly following the circuit diagram;
Measure the positive and negative polarity of each string by
ammeter with withstanding voltage no less than 1500V and make
sure there is no reversed connection before cable connection.
Measure and make sure the string open-circuit voltage meets the
requirements of the PVS before inserting the fuse;
Identify the positive pole and negative pole before connection.
Step 1
Loosen the union nut of water-proof terminals.
Step 2
Insert the “PV1+” cable through terminals of positive input area, and
connect the cable to the “PV1+” terminal inside the device. Enough wire
bending space should be ensured.
