SMA Sunny Island 5048 Installation Instructions Manual page 166

SMA
Glossary Technologie AG
Overload capability
The overload capability of an inverter describes the ability of the inverter to supply short-
term (seconds or minutes) excessive loads, that can be significantly higher than the no-
minal capacity in battery inverters. The overload capability is important to allow elec-
trical machines with a nominal power output close to the nominal power output of the
stand-alone grid inverter to be started, since these machines typically require six times
the nominal current when starting.
Parallel connection
Parallel connection of the batteries (all positive poles together and all negative poles
together) increases the capacity of the battery bank while keeping the voltage constant.
Example: Two 24 V/100 Ah batteries connected in parallel still have a voltage of 24
V, but have a capacity of 100 Ah + 100 Ah = 200 Ah.
Piggy-Back (Board)
A printed circuit board that is plugged into another board to increase performance or
expand capabilities. A piggy-back board can also replace a single chip. In this case,
the chip is removed and the board is plugged into the empty socket.
PLC
Abbreviation for Power Line Communication: Describes the process of data transfer
over the grid supply cables. The PLC power module is used to amplify the signal and is
connected in Multi-String and Sunny Mini Central inverters. Powerline communication
is not suitable for Sunny Island inverters.
PV
Photovoltaics (PV) is the conversion of solar irradiation into electrical energy using spe-
cial semiconductors called solar cells.
PV array
See PV generator.
PV generator
Technical device for the conversion of light energy into electrical energy. All the series
and parallel mounted and electrically connected solar modules in a PV system are
known as the PV generator.
PV module
See Solar module.
PV system
Describes a solar power system for generating electrical power. Describes the complete
collection of components needed for the acquisition and utilization of solar energy. As
well as the PV generator, this includes the Sunny Boy or Sunny Mini Central, for examp-
le, in the case of grid-coupled systems.
Seite 166 SI5048-11:EE4206 Technical Description