On-Grid Inverter
R3 Pre
15kW / 20kW / 25kW | Three Phase, 2 MPPTs
The R3 Pre series inverter is especially designed for three-phase residential and small commercial projects. With its compact design, the R3 Pre series inverter is 40% lighter than the previous generation. The maximum conversion efficiency can reach 98.5%. The maximum input current of each string reach to 20A, which can be perfectly adapted to high power module to increase the power generation.
-
20A
Max. PV
input current
-
AFCI
Optional AFCI
& Smart PID recovery function
-
150%
150% PV
input oversizing &
110% AC overloading
Product Features
Export control function integrated 
Wider MPPT voltage range(180 ~ 1000V) 
Type II SPD for both DC and AC 
Remote firmware upgrade & setting
Parameter List
| Model | R3-15K | R3-20K | R3-25K |
| Max. PV Input Voltage[V] | 1100 | ||
| Max. PV Input Current [A] | 40/40 | ||
| No.of MPPT Trackers/No.of Input Strings per Tracker | 2/2 | ||
| Max. AC Output Apparent Power [VA] | 16500 | 22000 | 27500 |
| Max.Efficiency | 98.6% | ||
Related Products
On-Grid Inverter
15kW / 20kW / 25kW | Three Phase, 2 MPPTs
The R3 Pre series inverter is especially designed for three-phase residential and small commercial projects. With its compact design, the R3 Pre series inverter is 40% lighter than the previous generation. The maximum conversion efficiency can reach 98.5%. The maximum input current of each string reach to 20A, which can be perfectly adapted to high power module to increase the power generation.
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Product Video
Related FAQs
(1) Before servicing, first disconnect the electrical connection between the inverter and the grid, and then disconnect the DC side electrical (connection. It is necessary to wait for at least 5 minutes or more to allow the inverter’s internal high-capacity capacitors and other components to be fully discharged before carrying out the maintenance work.
(2) During the maintenance operation, first, visually check the equipment initially for damage or other hazardous conditions, and pay attention to anti-static during the specific operation, it is best to wear an anti-static hand ring. To pay attention to the warning label on the equipment, pay attention to the inverter surface that is cooled down. At the same time to avoid unnecessary contact between the body and the circuit board.
(3) After the repair is completed, make sure that any faults affecting the safety performance of the inverter have been resolved before turning the inverter on again.
Cause of occurrence：
(1) The output voltage of the module or string is lower than the minimum working voltage of the inverter.
(2) The input polarity of the string is reversed. The DC input switch is not closed.
(3) The DC input switch is not closed.
(4) One of the connectors in the string is not connected properly.
(5) A component is short-circuited, causing the other strings to fail to work properly.
Solution:
Measure the DC input voltage of the inverter with the DC voltage of the multimeter, when the voltage is normal, the total voltage is the sum of component voltage in each string. If there is no voltage, test whether the DC circuit breaker, terminal block, cable connector, component junction box, etc. are normal in turn. If there are multiple strings, disconnect them separately for individual access testing. If there is no failure of external components or lines, it means that the internal hardware circuit of the inverter is faulty, and you can contact Renac for maintenance.
Cause of occurrence:
(I) The inverter output AC circuit breaker is not closed.
(2) The inverter AC output terminals are not connected properly.
(3) When wiring. the upper row of the inverter output terminal is loose.
Solution:
Measure the AC output voltage of the inverter with a multimeter AC voltage gear, under normal circumstances, the output terminals should have AC 22ov or AC 38ov voltage; if not, in turn, test the wiring terminals to see if they are loose, whether the AC circuit breaker is closed, leakage protection switch is disconnected etc.
