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PV Module Selection:
When selecting proper PV modules, please be sure to consider the following parameters:
1. Open circuit Voltage (Voc) of PV modules not to exceeds maximum PV array open circuit voltage of the
inverter.
2. Open circuit Voltage (Voc) of PV modules should be higher than the start-up voltage.
3. Short circuit Current (Isc) of PV modules not to exceeds maximum input current per MPPT.
INVERTER MODEL
SPCIII4000-24
SPCIII6000-48
Max. PV Array Power
5000W
6000W
Max. PV Array Open Circuit Voltage
500Vdc
PV Array MPPT Voltage Range
120Vdc~450Vdc
Start-up Voltage
/- 10Vdc
Max. Input Current per MPPT
18A
Take the 250Wp PV module as an example. After considering above two parameters, the recommended
module configurations are listed in the table below.
SOLAR INPUT
Q'ty of panels
Total input
Solar Panel
min. in series: 6 pcs, max. in series: 12 pcs.
power
6 pcs in series
6 pcs
1500W
Spec.
(reference)
8 pcs in series
8 pcs
2000W
- 250Wp
12 pcs in series
12 pcs
3000W
- Vmp: 30.1Vdc
8 pieces in series and 2 sets in parallel
16 pcs
4000W
- Imp: 8.3A
10 pieces in series and 2 sets in parallel
20 pcs
5000W
- Voc: 37.7Vdc
- Isc: 8.4A
- Cells: 60
11 pieces in series and 2 sets in parallel
(only for SPCIII6000-48 model)
22 pcs
5500W
12 pieces in series and 2 sets in parallel
24 pcs
6000W
(only for SPCIII6000-48 model)
PV Module Wire Connection
Please take the following steps to implement PV module connection:
1. Remove insulation sleeve for about 7 mm on your positive and
negative wires.
2. Use a bootlace ferrules on the wires for optimal performance.
3. Check polarities of wire connections from PV modules to PV
input screw terminals. Connect your wires as illustrated below.
Recommended tool: 4mm blade screwdriver
