PV Module (DC) Connection
6
9
10
WARNING:
This inverter is non-isolated, therefore only three
types of PV modules are acceptable: single crystalline, poly
crystalline and only class A-rated CIGS modules.
To avoid malfunction, do not connect PV modules that has a
possibility of leakage current to the inverter. For example,
grounded PV modules will cause leakage current to the
inverter. When using CIGS modules, be sure NOT to ground the
PV modules.
CAUTION:
It’s suggested to have a PV junction box with surge
protection installed. It will assist to prevent inverter damage
when lightning strikes the PV modules.
CAUTION:
Exceeding the maximum input voltage can destroy
the unit!! Check the system before wire connection.
CAUTION:
Never directly touch terminals of the inverter. It may
cause lethal electric shock.
CAUTION:
Do NOT touch the inverter to avoid electric shock.
When PV modules are exposed to sunlight, it may generate DC
voltages to the inverter.
CAUTION:
Do
NOT
connect the battery or DC source to the PV
connectors. It will cause damage to the inverter.
CAUTION:
Before connecting to PV modules, please install a
separate
DC circuit breaker between the inverter and the PV
modules.
NOTE1:
Use a 600VDC/25A circuit breaker.
NOTE2:
The overvoltage category of the PV input is II.
WARNING!
It's very important for system safety and efficient
operation to use appropriate cable for PV module connection. To
reduce risk of injury, please use the proper recommended cable
size as below.
Please follow below steps to implement PV module connection:
Step 1:
Check the input voltage of PV array modules. The
acceptable input voltage of the solar inverter is 250VDC -
450VDC. This system is supplied with only one PV array input.
Make sure that that the maximum current from the PV array to
the PV input connector is 18A.
Step 2:
Disconnect the circuit breaker.
Step 3:
Remove 10mm of the insulation sleeve for the positive
and negative conductors. Refer to Chart 4.
Step 4:
Check for the correct polarity on the connection cable
from the PV modules and the PV input connectors. Connect the
positive pole (+) of the connection cable to the positive pole (+)
of the PV input connector. Connect the negative pole (-) of the
connection cable to the negative pole (-) of PV input connector.
Refer to Chart 5.
Step 5:
Make sure that the wires are securely connected.
The reference tightening torque is 1.22 N.m.
Chart 4
Chart 5
Conductor cross-section (mm )
4~6
2
