9
Take SP5000 Initial-P as an example to select proper PV module. After considering Voc of PV module not exceed
105Vdc and max. Vmpp of PV module close to 60Vdc or within 56Vdc ~ 72Vdc, we can choose PV module with
below specification.
Maximum Power (Pmax)
260W
Max. PV module numbers in series
2
30.9 x 2
≒
56 ~ 72
Max. Power Voltage Vmpp(V) 30.9V
Max. Power Current Impp(A) 8.42A
PV module numbers in parallel
6
50 A / 8.42
Total PV module numbers
2 x 6 = 12
Open Circuit Voltage Voc(V)
37.7V
Short Circuit Current Isc(A)
8.89A
Maximum PV module numbers in Series: 2
PV module numbers in Parallel: 6
Total PV module numbers: 2 x 6 = 12
PV Module Selection: (Only for the model with MPPT solar charger)
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.
INVERTER MODEL
SP3000 Initial-M
SP5000 Initial-M
Max. PV Array Open Circuit Voltage
100Vdc
145Vdc
PV Array MPPT Voltage Range
30~80Vdc
60~115Vdc
Take 250Wp PV module as an example. After considering above two parameters, the recommended module
configurations for SP3000 Initial-M and SP5000 Initial-M are listed as below table.
Maximum Power (Pmax)
250W
SP3000 Initial-M:
2 pieces in serial and 2 sets in parallel.
SP5000 Initial-M:
2 pieces in serial and 6 sets in parallel, or
3 pieces in serial and 4 sets in parallel
Max. Power Voltage Vmpp(V)
30.1V
Max. Power Current Impp(A)
8.3A
Open Circuit Voltage Voc(V)
37.7V
Short Circuit Current Isc(A)
8.4A
PV Module Wire Connection
Please follow below steps to implement PV module connection:
1.
Remove insulation sleeve 10 mm for positive and negative conductors.
2.
Suggest to put bootlace ferrules on the end of positive and negative wires with a
proper crimping tool.
3.
Fix strain relief plate to the inverter with supplied screws as shown in below
chart.
4.
Check correct polarity of wire connection from PV modules and PV input connectors. Then, connect positive
pole (+) of connection wire to positive pole (+) of PV input connector. Connect negative pole (-) of
connection wire to negative pole (-) of PV input connector. Screw two wires tightly in clockwise direction.
Recommended tool: 4mm blade screwdriver
