Product Description; System Introduction - Sungrow SG250HX User Manual

2 Product Description
2.1 System Introduction
The inverter is a transformerless 3-phase PV grid-connected inverter. As an integral compo­
nent in the PV power system, the inverter is designed to convert the direct current power gen­
erated from the PV modules into grid-compatible AC current and to feed the AC current into
the utility grid.
The intended usage of the inverter is illustrated in the following figure.
WARNING
The inverter must not be connected to a PV string that requires positive or negative
grounding.
Do not connect any local load between the inverter and the AC circuit breaker except
for the tracking axis.
NOTICE
When designing the system, ensure that the operating ranges of all devices that are
connected to the inverter meet the requirements of the inverter.
The PV modules in the system must comply with the IEC 61730-1 (2016) class Ⅱ stan­
dard.
The inverter is only applicable to the scenarios described in the manual and cannot
be used in other situations.
Item Description
A PV strings
B Inverter
C Transformer
figure 2-1 Inverter Application in PV Power System
Note
Monocrystalline silicon, polycrystalline silicon and thin-film with­
out grounding.
SG250HX
Boost the low voltage from the inverter to grid-compatible medi­
um voltage.
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