Sunny Boy 1800U
Installation and Operator’s Manual
SB2500U-11:NE
-
6
-
SMA Regelsysteme GmbH
1 Introduction
The SMA Sunny Boy is a string inverter for grid tied operation. With this manual the
Sunny Boy can be installed and operated in a safe way. This installer’s guide is used as
reference for the commissioning and as guideline on how to use all functions of the in-
verter optimally and how you can extend your existing PV-plant.
Supplementary grid feeding includes the conversion of the DC voltage from the PV-panel
to grid compatible AC voltage with so-called ”inverters“ and the subsequent connection to
the electricity grid in the house distribution.
Here the electricity from the PV-modules provides all consumers with electric power
(household devices, lights etc.). In case that not enough power is produced the addition-
ally necessary power is obtained from the grid. In case that there is a surplus of power,
this surplus is fed into the local grid and is therefore available for other consumers. This
way every single kilowatt-hour is utilized and the electricity company’s power systems are
relieved. In the most simple case a PV-plant therefore consists of two basic components:
the PV-panel and the inverter.
Fig. 1.1:
Grid-tied string inverter application
For a more detailed technical description of the Sunny Boy and its functionality please
read “Sunny Boy 1800U Technical Description”.
