SMA SUNNY ISLAND 6.0H, Руководство по эксплуатации

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SMA Solar Technology AG 11 Glossary
Operating Manual SI80H-BE-BEN120810 71
Off-grid inverter
A bidirectional converter capable of regulating voltage and frequency in a stand-alone grid as well
as correctly charging the batteries. The off-grid inverter forms a stand-alone grid and maintains a
stable and autonomous energy supply by regulating all processes.
Off-grid system
An off-grid system is the entire system with all components required to implement a stand-alone grid.
Batteries are a major component of off-grid systems used for energy storage. In order to increase the
availability of the stand-alone grid and to reduce the battery capacity, the off-grid system can use
external energy sources as an energy reserve.
Overload capacity
The overload capacity of an inverter is the short-term power which the inverter is capable of
maintaining for a few minutes or seconds. The overload capacity is significantly above the rated
power in off-grid inverters. Overload capacity is important to be able to start electrical machines with
a rated power close to the rated power of the off-grid inverter, as these machines typically require six
times the rated current (in relation to the nominal current) when starting.
Parallel connection
Parallel connection of batteries increases the capacity of the battery system while the voltage remains
constant. Example: Two 24 V/100 Ah batteries connected in parallel still have a voltage of 24 V, but
a capacity of 100 Ah + 100 Ah = 200 Ah.
Piggy-Back (board)
A printed circuit board plugged into another printed circuit board to enable optional functions. A
Piggy-Back board can also replace an individual chip. In this case, the chip is removed and the board
is plugged into the empty base.
PV array
Technical device for the conversion of solar energy into electrical energy. All electrically connected
(in series and in parallel) PV modules of a PV plant are referred to a PV array.
PV inverter
Device for converting the direct current supplied by the PV array into grid-compliant alternating
current. Inverters for PV plants usually include at least one MPP tracker, store operating data, and
monitor the power supply line of the PV plant.
PV module
Electrical connection of several PV cells encapsulated in an enclosure to protect the sensitive cells from
mechanical stress and environmental effects.