13
14
PV Module (DC) Connection
6
CAUTION:
breaker between inverter and PV modules.
NOTE1: Please use 1000VDC/20A circuit breaker.
NOTE2: The overvoltage category of the PV input is II.
Before connecting to PV modules, please install separately a DC circuit
Please follow below steps to implement PV module connection:
WARNING:
are acceptable: single crystalline and poly crystalline with class A-rated and CIGS
modules.
To avoid any malfunction, do not connect any PV modules with possibility of
leakage current to the inverter. For example, grounded PV modules will cause
leakage current to the inverter. When using CIGS modules, please be sure NOT
grounding.
CAUTION: It’s requested to have PV junction box with surge protection.
Otherwise, it will cause inverter damage when lightning occurs on PV modules.
Because this inverter is non-isolated, only three types of PV modules
Step 1: Check the input voltage of PV array modules. The acceptable input voltage of
the inverter is 250VDC - 900VDC. This system is only applied with two strings of PV
array. Please make sure that the maximum current load of each PV input connector is
10A.
CAUTION:
the system before wire connection.
Exceeding the maximum input voltage can destroy the unit!! Check
Step 4: Connect wires according to polarities indicated on terminal block. Be sure to
connect PE protective conductor ( ) first.
L
→
LINE (brown or black)
→
Ground (yellow-green)
N
→
Neutral (blue)
Step 5: Make sure the wires are securely connected.The reference tightening torque
is 0.82 N.m.
Note: For safe operation, please use one more wire with ring terminal to connect
grounding. Refer to Chart 3.
Recommended wire and terminal size:
CAUTION:
earthed before operating this hybrid inverter no matter the grid is connected or not.
To prevent risk of electric shock, ensure the ground wire is properly
Chart 3
Ring terminal:
Wire Size
10 AWG
Ring Terminal
Cable mm2
Dimensions
D (mm)
L (mm)
Torque value
6
4.3
21.8
1.2~ 2 Nm
