Dc Connection From Pv Array - Delta RPI M30A_120 Operation And Installation Manual

4.4 DC Connection from PV Array

- When undertaking DC wiring, please ensure the correct polarities are connected.
- When undertaking DC wiring please ensures that the power switch on the PV
array is OFF.
- The connection number of PV Array, open circuit voltage and power of all
strings in DC1 must be coherent.
- The connection number of PV Array, open circuit voltage and power of all
strings in DC2 must be coherent.
- The maximum open circuit voltage of PV Array cannot exceed 1000V.
- Any device installed between PV Array and inverter must meet the following
specifications:
Absolute maximum voltage > open-circuit voltage of PV Array.
Rated current > short-circuit current of PV Array.
- The input power to the inverter should not higher than the rated power shown
in Table 4-4.
Maximum input power
Model
RPI M30A
_120
RPI M30A
_121
DC wiring polarities are divided into positive and negative, which is shown in
Figure 4-16. The connection shall be coherent with the indication marked on
inverter.
PV-KBT 4/6 Ⅱ
WARNING !
CAUTION !
Type of limit
DC1 or DC2
Table 4-4 : Maximum rating of input power
Current Rating
DC 15A
DC 30A
Table 4-5 : Cable size
Figure 4-16 : DC Wiring illustration
RPI M30A
35 kW
23.5 kW
4 - 6 mm
PV-KST 4/6 Ⅱ
35
Wire size
2 / 12 - 10 AWG
6 mm / 10 AWG
2
Wiring