Sungrow SG8K3-D - 2 Product Introduction; Intended Use

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2 Product Introduction
2.1 Intended Use
The single-phase string inverters without transformer are the crucial units
between the PV strings and the utility grid in a PV power system.
The inverter converts DC power from the PV array into grid-compliant AC power
and feeds it into the utility grid.
Any use other than the intended use is not permitted.
The inverter must only be operated with PV strings of protection class
II in accordance with IEC 61730, application class A. It is not permitted
for the positive pole or the negative pole of the PV strings to be
grounded. This can cause the inverter to be destroyed.
Damages to the product due to a faulty or damaged DC installation are
not covered by warranty.
The intended use example is shown in Fig. 2-1.
A B C D
E
Export powerOutput powerPV power
Load power
Fig. 2-1 Application in a PV Power System
Item
Description
Remarks
A PV strings
Monocrystalline silicon, polycrystalline silicon
and thin-film without grounding.
B Inverter
SG2K-S, SG3K-S, SG3K-D, SG4K-D,
SG5K-D, SG6K-D and SG8K3-D.