The transformerless UNO inverters from ABB represent the most advanced design for residential PV systems. They feature a wide DC voltage input, giving system designers a lot of flexibility in terms of string sizing. The dual MPPT feature allows to have string with different orientations in the same PV system, maximizing energy production and minimizing shading effects.
The lightweight nature of ABB inverters enables one experienced installer to mount the inverter without any help. The inverter unit includes an integrated DC disconnect with string combiner and can easily mounted side by side. It also comes with Ground Fault and Arc Fault Disconnect. This UNO inverter comes in a NEMA4X enclosure, which means that it can virtually be installed in any kind of environment.
The inverter comes with an standard 10 year warranty, extensions to 15 and 20 years are available.
ABB model: UNO-7.6-TL-OUTD-S-US-A (with Arc Fault Disconnect)
Output power: 7600 Watts