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2
Product Description
2.1 System Introduction
The inverter is a transformerless 3-phase PV grid-connected inverter. As an integral
component in the PV power system, the inverter is designed to convert the direct
current power generated from the PV modules into grid-compatible AC current and
feeds the AC current to the utility grid.
• The inverter must only be operated with PV strings with class II protection in
accordance with IEC 61730, application class A. It is not allowed 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 PV installation are not
covered by warranty.
• Any use other than the one described in this document is not permitted.
The intended usage of the inverter is illustrated in the following figure.
FFiigguurree 22--11 Inverter Application in PV Power System
IItteemm
DDeessccrriippttiioonn
NNoottee
A
PV strings
Compatible with monocrystalline silicon, polycrystalline
silicon, and thin-film without grounding
B Inverter
SG5.0RT, SG6.0RT, SG7.0RT, SG8.0RT, SG10RT, SG12RT,
SG15RT, SG17RT, SG20RT
C
Metering device Meter cupboard with power distribution system
D
Utility grid
TT, TN-C，TN-S，TN-C-S
The following figure shows the common grid configurations.
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