The REACT2 by Fimer is the all-in one storage system for the residential market consisting of hybrid inverters plus storage battery, scalable by combining up to 3 battery modules from 4 to 12 kWh, using REACT 2 BATT 4 kWh batteries in the 2 sizes from 3.6 and 5.0 kW.
It is now even more versatile thanks to the technical note issued by the manufacturer which describes the configuration potential and the oversizing capacity for some inverter models.
Oversizing the system: what does it mean?
Oversizing the system allows you to increase the system’s energy production by increasing the installed DC power (Pdc) compared to the inverter’s AC (Pac) conversion power.
Thus pushing the latter to work at greater power already in the morning. Increasing the installed Pdc power can increase the production curve up to and beyond the maximum conversion power limit of the inverter, ensuring greater energy yield and an increase in the self-consumption share of the system.
Advantages of REACT2
Its ability to adapt to the available spaces is already known by being able to connect the batteries both on the side and under the inverter machine body and thanks to the very flat yield curve starting from about 30% of the nominal AC power it already has the maximum degree of efficiency so it can also be used in small 1 kWp systems for the 3.6 kW version and 1.5 kWp for the older brother.
Double DC/DC and DC/AC conversion stage
Moreover, thanks to the double conversion stage DC/DC and DC/AC with the first oversized compared to the second, it will always be possible to have energy margin to charge the battery even when the power produced and consumed is at the limit of the nominal AC power.
In this way, self-consumption is increased, improving battery management by increasing the effectiveness of the system, since the inverter in the less irradiated seasons and/or in the early hours of in the morning and in the late afternoon there will be more power available, counteracting and balancing the small losses of energy that may occur on days with greater irradiation.
A further advantage is that of being able to keep the single-phase connection to the network having even 8 kWp of modules on the roof.
Oversizing 160% North, between 120% and 140% Center, 110% and 130% South Italy
The studies conducted by Fimer by monitoring and comparing systems of equal power installed in North, Central and Southern Italy connected to different types of inverters with different powers reveal how an oversizing between the module side and the alternating side with REACT 2 can reach up to 160% in Northern Italy, between 120 and 140% in Central Italy, while in Southern Italy the oversizing will have to be less severe, between 110 and 130%.
