Sungrow SG250HX-IN-20, User Manual, Page: 14 / 109

4
2
Product Introduction
2.1 Intended Usage
SG250HX-IN-20, a transformerless three-phase PV grid-connected inverter, is 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
intended usage of the inverter is illustrated in
"
Figure 2-1 Inverter application in PV
power system
"
.
F Fiig gu urre e 2 2--1 1 Inverter application in PV power system
Inverter cannot connect the PV strings whose positive and negative terminals
need to be grounded.
Do not connect any local load between the inverter and the AC circuit breaker.
IItte em m
D De essc crriip pttiio on n
N No otte e
A
PV strings
Monocrystalline silicon, polycrystalline silicon and thin-
film without grounding.
B Inverter SG250HX-IN-20
C Transformer
Boost the low voltage from inverter to grid-compatible
medium voltage.
D
Utility grid TN-C, TN-S, TN-C-S, TT, IT.