Dc Connection (From Pv Array) - Delta RPI-M8 Manual

5.3 DC Connection (from PV Array)

WARNING
 When doing DC wiring, please choose the proper wiring by
!
connect to the correct polarity.
 When doing DC wiring, please confirm that PV Array's power
switch is off.
CAUTION
!
 The connection number of PV Array, open circuit voltage and
power of String_1 and String _2 must be coherent.
 The connection number of PV Array, open circuit voltage and
power of String _3 and String _4 must be coherent.
 The maximum open circuit voltage of PV Array can not be higher
then 1000V.
 The range of Vmpp of Input1 and Input2 shall be in 350~800 Vdc.
 The device installed between PV Array and inverter must meet the
rating of voltage >1000 Vdc and > Short current.
 The input power to the inverter is not recommended to exceed the
maximum rated power which show in table 5-3.
Type of limit
Total input power
Input1 or Input2
Type of limit
Total input power
Input1 or Input2
Model
M8
M10/ M12
M15A/ M20A
M15/ M20/ M30
Table 5-4 Maximum rating of input power
RPI-M8
8.8 kW
5.9 kW
RPI-M15A
16.5 kW
8.25 kW
Table 5-5 Cable size
Current Rating
DC 10A
DC 20A
DC 34A
DC 34A
RPI-M10 RPI-M12
11 kW 13.2 kW
7.4 kW 8.8 kW
RPI-M20 RPI-M20A
22 kW 22 kW
11 kW 11 kW
Wire size
2
2 - 3mm / 14 AWG
2
3 - 5mm / 12 AWG
2
5 - 6mm / 10 AWG
2
5 - 6mm / 10 AWG
RPI-M15
16.5 kW
8.25 kW
RPI-M30
32 kW
16 kW
Temperature
Meet UL 10070
Meet UL 10070
Meet UL 10070
Meet UL 10070
22