12
11
3.3.4 PV connection
CAUTION:
Before connecting to PV modules, please install separately a DC circuit
breaker between inverter and PV modules.
WARNING!
All wiring must be performed by a qualified personnel.
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.
Model
Max charging current per string
Diameter
Torque
Table 3.3
PV Module Selection:
When selecting proper PV modules, please be sure to consider below parameters:
1.Open circuit Voltage(Voc) of PV modules not exceeds max. PV array open circuit
voltage of inverter.
2.Open circuit Voltage(Voc) of PV modules should be higher than min. battery voltage.
Model
SPF3000
Max. PV array open circuit voltage
PV array MPPT voltage range
Min. battery voltage for PV charge
Table 3.4
There’re two pairs of string for PV input. Also, it’s allowed to make two PV input
parallel (see section 6.2 for details).
Please follow below steps to implement PV input connection:
1.Remove insulation sleeve 10 mm for positive and negative conductors.
Figure 3.10
2.Check correct polarity of connection cable from PV modules and PV input
connectors. Then, connect positive pole (+) of connection cable to positive pole (+)
of PV input connector. Connect negative pole (-) of connection cable to negative
pole (-) of PV input connector.
Figure 3.11
Figure 3.12
3.Make sure the wires are securely connected.
3.3.5 Finally assemble
After connecting all wirings, please put bottom cover back by screwing two screws
as shown below
:
Figure 3.13
SPF3000
35A
1*10AWG
1.2-1.6Nm
SPF5000
35A
1*10AWG
1.2-1.6Nm
SPF3000 PLUS
35A
1*10AWG
1.2-1.6Nm
SPF5000
SPF3000
PLUS
145Vdc
60~115Vdc
36Vdc
